Re: [Zope-dev] Observable Interface?

[Chris Withers]

Tres Seaver wrote:
 
 Chris Withers [EMAIL PROTECTED] asked:
 
  Does anyone know what happened to it and how far its implementation got?
 
 The preliminary implementaion, DefaultObservabale, landed as a mix-in
 class
 in Zope 2.2:
 
   $ZOPE_HOME/lib/python/OFS/DefaultObservable.py
 
 Mix it in to one of your Python base classes (be sure to get it's
 '__init__()'
 called!) and fire away.

Where are the docs? Hwo does it work?

 I am currenly working on the more ambitious notion of adding an event
 channel,
 which addresses some of the "MxN" problems which plague the classic
 Observer.
 See the Zope-PTK archives for August for the latest on that.

Looked... any further progress?

cheers,

Chris

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Re: [Zope-dev] Re: Discussion Story Building Mediums

[Chris Withers]

Michael Bernstein wrote:

 After some more thought, I realized that this really needs
 to be a three-way gateway betrween a mailing list, a 'blog,
 and a newsgroup.

I'm all up for doing the mailing list/weblog type bits but I have no
idea how news _works_ and how it could be integrated into the Zope
environment...

Any ideas?

cheers,

Chris

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Re: [Zope-dev] RFClarification: Security on Product Attributes

[Chris Withers]

Okay, apologies in advance for picking up a thread that's been dorman
for so long ;-)

Jim Fulton wrote:
 
 Chris Withers wrote:
 
  self.id = id
  self.title = 'Title!'
  self.anInt = 0
  self.aString = 'testing'
 
 None of the
 values above can have a __roles__ attribute, so they are covered
 by assertions made in their containers.

That's what I thought

 Note that if you can't adequately control something that
 can't have __roles__, you can provide an access function
 (e.g. getAnInt), which you can control
 
  Can I read them? I think the answer is yes for anInt and no for aString.
 
 Probably, if you can get at one, you can get at the other.

That's not my experience. If you try and use strings, you get dialog
boxes popping up. If you use ints, it works fine.

So, the problem is how to protect ints when you don't want people to get
at them... Adding accessors mean you have protected accessors bu there's
nothing to stop you just going and using the freely available original
attribute.

Strings; fine, at least they're secure, and when they become proper
objects in Python 2.0, the problem should go away?

cheers,

Chris

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Re: [Zope-dev] Observable Interface?

[Tres Seaver]

On Fri, 10 Nov 2000, Chris Withers wrote:

 Tres Seaver wrote:
  
  Chris Withers [EMAIL PROTECTED] asked:
  
   Does anyone know what happened to it and how far its
   implementation got?
  
  The preliminary implementaion, DefaultObservabale, landed as
  a mix-in class in Zope 2.2:
  
$ZOPE_HOME/lib/python/OFS/DefaultObservable.py
  
  Mix it in to one of your Python base classes (be sure to get
  it's '__init__()' called!) and fire away.
 
 Where are the docs? Hwo does it work?

The docs are in the interfaces wiki:

  http://www.zope.org/Members/michel/Interfaces/ObserverAndNotification

(Note that this actually predates the fishbowl process -- this
has been in Zope for a lng time).

 
  I am currenly working on the more ambitious notion of adding
  an event channel, which addresses some of the "MxN" problems
  which plague the classic Observer.  See the Zope-PTK archives
  for August for the latest on that.
 
 Looked... any further progress?

Nope, the PTK work I have been able to do lately is all
stabilization.  I am working an a new "PTK Fishbowl" site, where
such proposals can be tracked more cleanly.

Tres.
-- 
===
Tres Seaver[EMAIL PROTECTED]
Digital Creations "Zope Dealers"   http://www.zope.org


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Re: [Zope-dev] Observable Interface?

[Chris Withers]

Tres Seaver wrote:
 
 The docs are in the interfaces wiki:
 
   http://www.zope.org/Members/michel/Interfaces/ObserverAndNotification
 
 (Note that this actually predates the fishbowl process -- this
 has been in Zope for a lng time).

Actually at:
http://www.zope.org/Members/michel/Projects/Interfaces/ObserverAndNotification
/pedant ;-)

Does this mean all of the classes in the diagram at that URL have been
implemented? How come the Catalog doesn't use it so CatalogAware
(bleugh!) isn't needed anymore?

Also, is there any documentation about how to actually use the
Observable interface? (excuse my ignorance if I've missed it...)

 Nope, the PTK work I have been able to do lately is all
 stabilization.  I am working an a new "PTK Fishbowl" site, where
 such proposals can be tracked more cleanly.

Cool :-)

Chris

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Re: [Zope-dev] RFClarification: Security on Product Attributes

[Jim Fulton]

Chris Withers wrote:
 
 Okay, apologies in advance for picking up a thread that's been dorman
 for so long ;-)
 
 Jim Fulton wrote:
 
  Chris Withers wrote:
  
   self.id = id
   self.title = 'Title!'
   self.anInt = 0
   self.aString = 'testing'
  
  None of the
  values above can have a __roles__ attribute, so they are covered
  by assertions made in their containers.
 
 That's what I thought
 
  Note that if you can't adequately control something that
  can't have __roles__, you can provide an access function
  (e.g. getAnInt), which you can control
 
   Can I read them? I think the answer is yes for anInt and no for aString.
 
  Probably, if you can get at one, you can get at the other.
 
 That's not my experience.

There's something very odd going on. The issue isn't
stringness or intness but role-less-ness. :)

 If you try and use strings, you get dialog
 boxes popping up. If you use ints, it works fine.

I've never seen this.
 
 So, the problem is how to protect ints when you don't want people to get
 at them... Adding accessors mean you have protected accessors bu there's
 nothing to stop you just going and using the freely available original
 attribute.

Yes there is. Access to attributes is controlled by the roles if their
container.  

You should also be able to create specific unprotected attribute assertions
using the mechanism described in:

  http://www.zope.org/Members/michel/Projects/Interfaces/ZopeSecurityPolicy

I'll admit that I haven't tried this. If you try it soon (like today) and
find it broken, we can fix it for Zope 2.2.3.
 
 Strings; fine, at least they're secure, and when they become proper
 objects in Python 2.0, the problem should go away?

Will Python 2.0 let you assign string attributes?

Jim

--
Jim Fulton   mailto:[EMAIL PROTECTED]   Python Powered!
Technical Director   (888) 344-4332http://www.python.org  
Digital Creationshttp://www.digicool.com   http://www.zope.org

Under US Code Title 47, Sec.227(b)(1)(C), Sec.227(a)(2)(B) This email
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[Zope-dev] Exceptions

[seb bacon]

I was just building in some error handling into some UI code, and wanted to catch 
errors relating to duplicate ids.  The problem is that just about every client-side 
error raises the same kind of Exception, a 'Bad Request'.  A quick grep counted 41 
different types of 'Bad Request' in my Zope source.

Wouldn't it be *much* nicer to have a hierarchy of exception types, so that 
applications can deal with them at an arbitrarily granular level?  e.g.

ZopeException
|
`RequestException
  |  |
  |  `XMLException
  |
  `IdException
|  |
|  `ReservedWordException
|
`DuplicateException

Has this discussion taken place before?  Would it be useful?  Would its effort:benfits 
ratio be too great to justify doing?

seb

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Re: [Zope-dev] Exceptions

[Chris Withers]

Oh if only!!!

I love this idea, and comments haev coem from DC along those same lines,
btu nothing ever really happened about it...

cheers,

Chris

seb bacon wrote:
 
 I was just building in some error handling into some UI code, and wanted to catch 
errors relating to duplicate ids.  The problem is that just about every client-side 
error raises the same kind of Exception, a 'Bad Request'.  A quick grep counted 41 
different types of 'Bad Request' in my Zope source.
 
 Wouldn't it be *much* nicer to have a hierarchy of exception types, so that 
applications can deal with them at an arbitrarily granular level?  e.g.
 
 ZopeException
 |
 `RequestException
   |  |
   |  `XMLException
   |
   `IdException
 |  |
 |  `ReservedWordException
 |
 `DuplicateException
 
 Has this discussion taken place before?  Would it be useful?  Would its 
effort:benfits ratio be too great to justify doing?
 
 seb
 
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Re: [Zope-dev] Fw: 2gb file size

[Shane Hathaway]

Itamar Shtull-Trauring wrote:
 
 Shane Hathaway wrote:
 
  Not long ago I created a wrapper around File objects which automatically
  splits the file before it reached a predefined limit.  It could handle
  any number of partitioned file segements.
 
 Yes please! Perhaps it could be integrated into the ZODB codebase while
 you're at it?

I'm working on cleaning it up so that it integrates cleanly with
FileStorage.  Then I'll release it.

BTW your roadmap document is fantastic.  I hope you're getting lots of
good feedback.  It really brings everything together.

Shane

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RE: [Zope-dev] Exceptions

[Brian Lloyd]

 snip good idea about exception hierarchies

 Oh if only!!!
 
 I love this idea, and comments haev coem from DC along those same lines,
 btu nothing ever really happened about it...

If there are people willing to work on this, then a proposal 
would be most welcome...

http://dev.zope.org/Wikis/DevSite/Proposals/FrontPage



Brian Lloyd[EMAIL PROTECTED]
Software Engineer  540.371.6909  
Digital Creations  http://www.digicool.com 





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[Zope-dev] RFC : ZPatterns Customer Relationship Management Framework

[Roch'e Compaan]

Thanks a lot for all the guidance on ZPatterns so far.

Our company is building a Customer Relationship Management system using ZOPE
and ZPatterns. We have a object model and basic Dataskins and Specialists in
place. At this point we thought it a good idea to share the object model
with the Zope community and invite comments since we will be giving it back
to the Zope community.

Go to http://www.zope.org/Members/sparroy/CRM to download a pdf of the model
and make some comments.

Roché


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[Zope-dev] ZODB, Threads and Persistence

[Magnus Heino (Rivermen)]

Hi.

Reading from Jims 'Introduction to the Zope Database':

"An object's state may be freed at any time by the ZODB to conserve memory
usage."

What does this mean? That the object can be freed even though there are
references to it?

The reason I'm asking is becase I want to use threads and persistence
together.

I would like to inherit both threading.Thread and Persistence.Persistent,
but that gives an error. I guess thats because of the ExtentionClass.

However, if i only inherit Persistence.Persistent and starts a thread using
the thread module withing the persistent class, what will happen with it?
Can the ZODB still decide to free my persistent object even thoght it has a
reference to a thread that is running??

Or can I start my thread when the object first is used, and rely on that it
will be running until I stop it or remove any reference to it?


/Magnus


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Re: [Zope-dev] Best way to start on ZPatterns ?

[Steve Spicklemire]

Hi Nigel,

   Yes.. the example still works. I am working on an update that 
incorporates some of the suggestions folks have made and better
illustrates some ZPatterns concepts. Basically the example is *too*
simple, and it doesn't separate PD, and UI issues very well..

-steve

 "Nigel" == Nigel Head [EMAIL PROTECTED] writes:

Nigel OK, I've finally got a little leisure to re-assess my way
Nigel of making Zope apps (which so far has been 99.9% ZClasses)
Nigel and it seems the way to go might be ZPatterns. In true Zope
Nigel tradition the docs (at least the simple docs) seem to leave
Nigel quite a steep learning curve :-)

Nigel After searching the zope-dev mail for a while I've happened
Nigel on the thread from Steve S. describing the simplest example
Nigel he could think of. Is this still a valid example for the
Nigel current version of ZPatterns?

Nigel  -- Nigel Head Houbits Hi-Tech Servers [EMAIL PROTECTED]

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[Zope-dev] [Fwd: [Zope] DataSkin Supplier?]

[Chris Withers]

Erk... meant this for zope-dev :-S

Chris Withers wrote:
 
 Hello...
 
 Okay, I'm still staring up at the ZPatterns learning cliff as I write
 this so forgive my ignorance.
 
 I'm looking at ZPatterns WRT to 'dynamically generated dataskins'.
 
 You what? Well, okay, I'll try and explain...
 
 Firstly, I'm assuming that DataSkins (or their subclasses?) are
 first-class zope objects, can be 'added', copied, pasted, have security
 tabs, can be catalogued, URL traversed, etc, etc. Is that assumption
 correct?
 
 I hope so :-S
 
 If it is, is there something which can generate DataSkins on the fly?
 ie: in the same way an AttributeProvider supplier attributes to an
 object, is there something like a 'DataSkin provider' which provides
 whole dataskins to a folderish object?
 
 Finally, and this is the important bit. Can one of these folderish
 objects also _be_ a DataSkin? So, to word it differently, there is a
 root 'DataSkin provider'. This provides DataSkins which are folderish
 and are also 'DataSkin providers' themselves.
 
 Why do I want this? Well, think objects in a tree where the
 parents/children are stored as a list of names refering to other
 objects. In addition, objects may have multiple parents, etc...
 
 Any ideas? Where should I start reading?
 
 cheers,
 
 Chris
 
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Re: [Zope-dev] RFClarification: Security on Product Attributes

[Steve Alexander]

Jim Fulton wrote:

 
 Strings; fine, at least they're secure, and when they become proper
 objects in Python 2.0, the problem should go away?
 
 
 Will Python 2.0 let you assign string attributes?


% python
Python 2.0 (#3, Oct 26 2000, 15:07:09)
[GCC 2.95.2 19991024 (release)] on sunos5
Type "copyright", "credits" or "license" for more information.
  a=''
  a.foo='bar'
Traceback (most recent call last):
   File "stdin", line 1, in ?
TypeError: object has read-only attributes
 

--
Steve Alexander
Software Engineer
Cat-Box limited
http://www.cat-box.net


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Re: [Zope-dev] Observable Interface?

[Tres Seaver]

On Fri, 10 Nov 2000, Chris Withers wrote:

 Does this mean all of the classes in the diagram at that URL have been
 implemented?

 How come the Catalog doesn't use it so CatalogAware
 (bleugh!) isn't needed anymore?

Heh, because we would have to make far-reaching changes
(essentially, add an event channel :) to make CA redundant;
otherwise, the catalog has no way to know *which* objects to
observe (not to mention the problem of maintaining tens of
thousands of point-to-point subscriptions within the catalog).

Chris Petrilli is working on a fishbowl proposal for CatalogNG;
I'm pretty sure he intends to adopt some kind of observer/event
scheme to make it work.

 Also, is there any documentation about how to actually use the
 Observable interface? (excuse my ignorance if I've missed it...)

Again, the wiki is it;  the code deployed in Zope 2.2 implements
the Observable interface, and is intended to be used as a mix-in,
like so:

  from OFS.SimpleItem import SimpleItem
  from OFS.DefaultObservable import DefaultObservable

  class Foo( SimpleItem, DefaultObservable ):
  """
  Some foo or other
  """
  ...
  def bar( self, ... ):
  """
  """
  ...
  self.notify( "bar" )

Clients register with a Foo instance using the methods of the
Observable interface, e.g.:

foo.registerObserver( self.getPhysicalPath() + ( 'watchFoo',) )
  
When the Foo instance has its 'bar()' method called, it will
notify all registered observers, passing 'bar' as the event;  in
this case, the client's 'watchFoo()' method will be called, with
the foo object and 'bar' passed as parameters.

(Thanks for the prodding -- I just checked in a docstring
containing the substance of this email.)

Tres.
-- 
===
Tres Seaver[EMAIL PROTECTED]
Digital Creations "Zope Dealers"   http://www.zope.org


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Re: [Zope-dev] ZODB, Threads and Persistence

[Chris McDonough]

AFAIK, you should be able to spawn a new thread from within any function
within Zope and manipulate stuff in the ZODB as long as you lock properly.
The number of database connections is fixed, but arbitrary threads can take
up a database connection on  an ad-hoc basis.  If I were you, I'd mess
around a little bit by spawning threads within a Product, and causing the
thread to manipulate ZODB objects, keeping locking in mind.  I've done this
on a limited basis and it seems to work.

Specifically, an object may be "ghosted" if it hasn't been accessed in a
while.  That doesn't mean its state goes away, it just means that it needs
to reload its state when it's accessed again.  Your manipulation of the
object in a separate thread should prevent the object from being ghosted.

- Original Message -
From: "Magnus Heino (Rivermen)" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, November 10, 2000 10:35 AM
Subject: [Zope-dev] ZODB, Threads and Persistence



 Hi.

 Reading from Jims 'Introduction to the Zope Database':

 "An object's state may be freed at any time by the ZODB to conserve memory
 usage."

 What does this mean? That the object can be freed even though there are
 references to it?

 The reason I'm asking is becase I want to use threads and persistence
 together.

 I would like to inherit both threading.Thread and Persistence.Persistent,
 but that gives an error. I guess thats because of the ExtentionClass.

 However, if i only inherit Persistence.Persistent and starts a thread
using
 the thread module withing the persistent class, what will happen with it?
 Can the ZODB still decide to free my persistent object even thoght it has
a
 reference to a thread that is running??

 Or can I start my thread when the object first is used, and rely on that
it
 will be running until I stop it or remove any reference to it?


 /Magnus


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[Zope-dev] Re: question re problem adding zwiki webs

[Simon Michael]

Re this error when adding a zwiki web:

  Error Type: KeyError
  Error Value: H?v`H?v$y_?-006412673360557
  Content-Disposition: form-data; name="wiki_type" basic

Tony McDonald [EMAIL PROTECTED] writes:
 It is a Mac actually. IE 5.0. I've just asked a colleague to try
 creating a ZWikiWeb on his PC and it's worked fine!
 
 I do have other problems with IE 5.0 in that it has a limit on the
 number of things I can 'copy' and 'paste' - in general I don't bother
 doing it and export and reimport folders etc. I'd really like to know
 why it's behaving like that, I do have a *lot* of cookies in my IE and
 have also heard that the sequence in which HTTP headers are sent to IE
 can be an issue to (sigh)

Thanks, that helps a lot! To narrow it down, if not to solve it :(

It does appear that the problem is not with zwiki, but that HTTP form
data headers are being sent in some unusual format and confusing
zope. I wonder if you experience mac-IE-specific problems with other
zope forms or forms in general. I suppose it could be related to your
cut/paste problems.

I'm cc'ing the list, perhaps someone knows more.

Cheers,
-Simon

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Re: [Zope-dev] DTML processing variable

[Paul Erickson]

If this is your exact code, it looks like you should be using
"sequence-item", instead of "sequence_item".

You should also be able to do it without the external method like this:
(100% untested)

dtml-in expr="_.string.split(acctUsersEmail)"
  dtml-var name="sequence-item"
/dtml-in


"David W. Damon" wrote:
 
 Hey all,
 
 I'm having difficulty getting dtml-in to iterate over a list of strings
 returned from an external python method.
 
 Essentially, I have a string that is comprised of the contents of an HTML text
 area.  I need to split the string into a list of words and iterate over this
 list.
 
 My external python method is this:
 
 def stringSplit( self, theString ):
   return string.split( theString )
 
 Heres the pertinent DTML.
 
 ---
 dtml-call expr="REQUEST.set( 'userList', stringSplit(acctUsersEmail))"
 
   dtml-in userList
 dtml-var sequence_item
 /dtml-in
 
 dtml-var REQUEST
 ---
 
 If I comment out the dtml-in block, i have a  userList variable in the REQUEST
 object that is something like: ['name1', 'name2', 'name3']
 
 Any ideas?
 
 -- dave
 
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Re: [Zope-dev] ZODB, Threads and Persistence

[Magnus Heino]

 AFAIK, you should be able to spawn a new thread from within any
function
 within Zope and manipulate stuff in the ZODB as long as you lock
properly.

I guess I wasn't clear enough, but my application isnt within zope, im
just using zodb and some more components out of it.


 Specifically, an object may be "ghosted" if it hasn't been accessed
in a
 while.  That doesn't mean its state goes away, it just means that it
needs
 to reload its state when it's accessed again.  Your manipulation of
the
 object in a separate thread should prevent the object from being
ghosted.

But I guess this still will be the same anyway. That is, if an object
inhereted from Persistence.Persistance spawns a thread that
manipulated data in the object, I will have no problems. The thread
will be running just fine, and the data will be stored in the zodb.

?

/Magnus
 
 - Original Message -
 From: "Magnus Heino (Rivermen)" [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Sent: Friday, November 10, 2000 10:35 AM
 Subject: [Zope-dev] ZODB, Threads and Persistence
 
 
 
  Hi.
 
  Reading from Jims 'Introduction to the Zope Database':
 
  "An object's state may be freed at any time by the ZODB to
conserve memory
  usage."
 
  What does this mean? That the object can be freed even though
there are
  references to it?
 
  The reason I'm asking is becase I want to use threads and
persistence
  together.
 
  I would like to inherit both threading.Thread and
Persistence.Persistent,
  but that gives an error. I guess thats because of the
ExtentionClass.
 
  However, if i only inherit Persistence.Persistent and starts a
thread
 using
  the thread module withing the persistent class, what will happen
with it?
  Can the ZODB still decide to free my persistent object even thoght
it has
 a
  reference to a thread that is running??
 
  Or can I start my thread when the object first is used, and rely
on that
 it
  will be running until I stop it or remove any reference to it?
 
 
  /Magnus
 
 
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--

/Magnus Heino

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Re: [Zope-dev] ZODB, Threads and Persistence

[Chris McDonough]

 But I guess this still will be the same anyway. That is, if an object
 inhereted from Persistence.Persistance spawns a thread that
 manipulated data in the object, I will have no problems. The thread
 will be running just fine, and the data will be stored in the zodb.

This is how I've experienced it.  :-)


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[Zope-dev] Security/Acquisition Bug? (take two)

[Charlie Wilkinson]

I had posted about this previously, but no one has tackled this one,
it seems to be a pretty serious issue, plus I've done a *lot* of poking
around and learned a few things since I first reported it.  What I have
*not* found (or been told) is that the below described behavior is normal.

First a simple exercise for those who would like to avoid my laborious
novice Zoper description and just ferret out the likely bug:

Create a fresh CVS copy of Zope on your *nix box.  Build it (python
wo_pcgi.py), configure 'start' with the ports of your choosing, set a
superuser password, start Zope and try to visit the /index_html page.

What I'm getting at that point is a BASICAUTH login box.  One has to
explicitly enable anonymous permissions on the index_html page in order
to view it without logging in.  I've read through all the security
model discussion I could find, but saw no discussion of this issue.
If somehow this behavior is intentional, I would greatly appreciate a clue
to that effect.  (Some response either way would be nice, actually...)

Based on my recent flailings with LoginManager and finally, stock
acl_users in Zope v2.2.cvs, it seems there this problem relates to the
"scope" of acl_users and/or its parent folder not including the objects
within.  The security settings of the parent folder are apparently not
regarded in determining access to objects within.  Instead, acl_users is
only impacting its sibling objects (and presumably their child objects).

Apologies if I'm making the wrong noises in the wrong place in the
wrong way.  Any help or pointers welcome.

-cw-

-- 
~
Charlie Wilkinson - [EMAIL PROTECTED] - N3HAZ
Parental Unit, UNIX Admin, Homebrewer, Cat Lover, Spam Fighter, HAM, SWLer...
Visit the Radio For Peace International Website: http://www.rfpi.org/
~
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   Join!! http://www.cauce.org/
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QOTD:
"Bush is a big corporation disguised as a human being running for president."
-- Ralph Nader on David Letterman (9/28/00)

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[Zope-dev] PythonMethods: Can't Slice context.REQUEST.PARENTS

[The Doctor What]

I cannot slice context.REQUEST.PARENTS

The reason I want to do this is to travel up the URL tree for a
breadcrumb navigation do-hicky.

I want to slice it so I can make a copy because if I just do
...reverse() on it, I screw up everything afterwards.

It says I'm unauthorized (Guarded.py __careful_getattr__) so I
assume this is a feature.

I suppose I can just .reverse() it back again at the end, but it
seems.wrong some how.

Attached is my code at the moment...it sucks, I know.  This is
python project numero uno and zope project duo...

If anyone has a better example of how to hand text (I'm using buff
and returning it) back, I'd appreciate it.

I'm much to tired, so off I go to bed...


Ciao!


-- 
Man is the best computer we can put aboard a spacecraft ... and the only one that can 
be mass produced with unskilled labor.
 -- Wernher von Braun

The Doctor What: fill in the blank http://docwhat.gerf.org/
[EMAIL PROTECTED]   KF6VNC


paramsbuff='',lose=1/params
"""
This is a breadcrumb generator.  A breadcrumb trail is what you get at yahoo as
you traverse downward in their directory structure:
computers-video-blah-etc.

It shows you where you are in your site.

My breadcrumbs shall follow these rules:
1) The current DTML Document shall be the last item.  It will not be a link.
2) If the current DTML Document isn't index_html, then the parent crumb will be
   the index_html for the folder
3) All crumb names are overridable by setting the 'nickname' attribute.
4) The root folder will always be called "Home"

Ciao!

[EMAIL PROTECTED]
"""

## Start being crumb-y!
buff = "\n!-- start Breadcrumbs --\n[ "

# Get the list of parents and reverse it
list = context.REQUEST.PARENTS[:]
list.reverse()

# Iterate over all the parent objects, skipping the 'current'one
# (see below for dealing with that
for x in range(lose,len(list)-1):
obj = list[x]

url = obj.absolute_url()
name = obj.title_or_id()
buff = "%s\n - a href='%s'%s/a" % (buff, url, name)

# Deal with the 'current' object(s)
obj = list[-1]

buff = "%s\n'%s'" % (buff, obj)
buff = "%s\n'%s'" % (buff, context.id)

if obj != context:
buff = "%s\n  - '%s'" % (buff, obj.title_or_id())

buff = "%s\n  - '%s'" % (buff, obj.title_or_id())



buff = buff + "\n]\n!-- end Breadcrumbs --\n"

return buff

[Zope] Populating a :list variable from the results of a ZSQL method

[Tony McDonald]

Hi all,
Say I've got a form with this in it

select type="checkbox" name="options:list"
option value="1"number 1
option value="2"number 2
option value="3"number 3
/select

When this is put into an SQL database, the field 'options' is this (string)

['1', '2', '3']  or ['2', '3'] etc.

When I get the data back from the database, 'options' comes back as a 
string, and dtml-in options ... /dtml-in gives errors (basically, 
it can't iterate over a string).

I tried
dtml-call "REQUEST.set('new_options:list', options)"
and then tried iterating over new_options, but the variable didn't exist...

Has anyone got any solutions for this?
TIA
Tone
--
Dr Tony McDonald,  Assistant Director, FMCC, http://www.fmcc.org.uk/
The Medical School, Newcastle University Tel: +44 191 222 5116
A Zope list for UK HE/FE  http://www.fmcc.org.uk/mailman/listinfo/zope

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Re: [Zope] still problems w/ SiteAccess 2.0.0b3

[Mario Olimpio de Menezes]

On Thu, 9 Nov 2000, The Doctor What wrote:

 I'm curious, you posted a message about SiteAccess.  I have the same
 problem, with Debian (Zope 2.2.2 and I've tried SiteAccess 2.0.0b3
 and b4).

for some reason, the debian SiteAccess package didn't contains some
files of the original SiteAccess tar ball.

I just installed it from the tgz file and it worked out of the box!

I even posted a msg to the debian-user list without success :-(

hth

[]s,
Mario O.de Menezes"Many are the plans in a man's heart, but
IPEN-CNEN/SP is the Lord's purpose that prevails"
http://curiango.ipen.br/~mario Prov. 19.21
   http://www.revistalinux.com.br


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[Zope] direct login after signup?

[Philipp Dunkel]

Hi zopers,

Is there a syntax to login a user in 
python?
i use a python method to add a user to 
the
acl_user folder. When this is done I want to log 
in
the new user directly.
Is that possible?

TIA
Philipp Dunkel

Re: [Zope] XML Document DTML's tree, HiperDOM

[Chris Withers]

Shane Hathaway wrote:
 
 Here's my guess: you have a complex XML document.  As you explore the
 document, Zope is setting a cookie that reflects the list of branches
 you have opened.  After opening a large number of branches, you reach
 the limit on the size of a cookie (somewhere in the range of 1024 or
 4096 bytes), making it so that the compressed data stored in the cookie
 gets truncated.  zlib then emits this cryptic error message.

Is this dtml-tree being bad again?

If so, how the session information proposal/project getting along?

Oh yeah, while I'm here, how's the HiperDOM project getting on? That
stuff would be raally useful for a project here...

cheers,

Chris

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Re: [Zope] Populating a :list variable from the results of a ZSQL method

[Chris Withers]

Tony McDonald wrote:
 
 When this is put into an SQL database, the field 'options' is this (string)
 
 ['1', '2', '3']  or ['2', '3'] etc.

So you're storing the sequence as a string of the type shown above...

...ow ;-)

Might be best to change your SQL Schema so your store one row per
option...

Nasty hack external method:

def eval_options(self):
return eval(self.REQUEST['options'])

then you can do:

dtml-in eval_options

...but be careful with that external method, it could be used to do all
sorts of bad things if it gets into the wrong hands.

cheers,

Chris

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[Zope] Bulk Mailing How-To!

[Stefan H. Holek]

For those who care: I have created a bulk mailing How-To at

http://www.zope.org/Members/shh/BulkMailHack/

Cheers,
Stefan

--
Things work better when plugged in 


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Re: [Zope] Populating a :list variable from the results of a ZSQL method

[Geir Bækholt]

don't know about inside zope, but in plain python you could just do:

new_options = list(options)


perhaps an external method would cut it:

return list(inputstring)



--
Geir Bækholt
web-developer/designer
[EMAIL PROTECTED]
http://www.funcom.com

on Friday, November 10, 2000 Tony McDonald wrote :
TM Hi all,
TM Say I've got a form with this in it

TM select type="checkbox" name="options:list"
TM option value="1"number 1
TM option value="2"number 2
TM option value="3"number 3
TM /select

TM When this is put into an SQL database, the field 'options' is this (string)

TM ['1', '2', '3']  or ['2', '3'] etc.

TM When I get the data back from the database, 'options' comes back as a 
TM string, and dtml-in options ... /dtml-in gives errors (basically, 
TM it can't iterate over a string).

TM I tried
TM dtml-call "REQUEST.set('new_options:list', options)"
TM and then tried iterating over new_options, but the variable didn't exist...

TM Has anyone got any solutions for this?
TM TIA
TM Tone
TM --
TM Dr Tony McDonald,  Assistant Director, FMCC, http://www.fmcc.org.uk/
TM The Medical School, Newcastle University Tel: +44 191 222 5116
TM A Zope list for UK HE/FE  http://www.fmcc.org.uk/mailman/listinfo/zope

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Re: [Zope] ZCatalog and random key error

[Erik Enge]

On Fri, 10 Nov 2000, Bak @ kedai wrote:

 also, will iterating through catalog index faster than iterating through 
 ..say.. objectItems('meta-type')?

Much faster.  Much, much faster.  I tried an objectValues() on 2000 items
(in 3 different folder-type objects) and did various calculations on each
object, it took me 20 sec. to render the page.  On the same box the
Catalog return a search (much wider than the one on 2000 objects) on 15000
items (indexd, natuarally) within a second or two.

Hm.  I might be getting out on thin ice now, but I think it depends on
what you want to do with the objects you get back from your
iteration.  If you just are looking for simple attributes, the Catalog
should suffice, but it (the Catalog) might be slower if you are doing
something with the objects, since it has to fetch them first - and the
objectValues() returns the object.  I'm not sure about this, though, the
source code should help you a lot (I think objectValues() and
objectItems() and those alike are in lib/python/ObjectManager.py -
around line 350).

Come to think of it.  You did say objectItems(), and I've described the
objectValues().  I don't think you can compare the Catalog and
objectItems(), since objectItems() returns a list of (id,
subobject) tuples and thus gives you context - something the Catalog
cannot do (unless you hack it.. yeah Catalog wizards?).

I might be wrong though :)




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Re: [Zope] Populating a :list variable from the results of a ZSQL method

[Phil Harris]

tone,

How about (untested):

where 'dboptions' is the string pulled from the DB, and 'options' is the
list needed.

dtml-call "REQUEST.set('options',[])"
dtml-in "_.string.split(dboptions[1:-1],',')"
  dtml-call "options.append(_.int(_['sequence-item']))"
/dtml-in

This would then give you take the string "['1','2','3']" and turn it into
the list [1,2,3].

hth

Phil

- Original Message -
From: "Tony McDonald" [EMAIL PROTECTED]
To: "Zope List" [EMAIL PROTECTED]
Sent: Friday, November 10, 2000 10:10 AM
Subject: [Zope] Populating a :list variable from the results of a ZSQL
method


 Hi all,
 Say I've got a form with this in it

 select type="checkbox" name="options:list"
 option value="1"number 1
 option value="2"number 2
 option value="3"number 3
 /select

 When this is put into an SQL database, the field 'options' is this
(string)

 ['1', '2', '3']  or ['2', '3'] etc.

 When I get the data back from the database, 'options' comes back as a
 string, and dtml-in options ... /dtml-in gives errors (basically,
 it can't iterate over a string).

 I tried
 dtml-call "REQUEST.set('new_options:list', options)"
 and then tried iterating over new_options, but the variable didn't
exist...

 Has anyone got any solutions for this?
 TIA
 Tone
 --
 Dr Tony McDonald,  Assistant Director, FMCC, http://www.fmcc.org.uk/
 The Medical School, Newcastle University Tel: +44 191 222 5116
 A Zope list for UK HE/FE  http://www.fmcc.org.uk/mailman/listinfo/zope

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Re: [Zope] How do I set the Title property of a File object from aDTML method

[Erik Enge]

On 10 Nov 2000 [EMAIL PROTECTED] wrote:

 But I'm unable to set the Title property of a File object.  

Is it just the title property?  All the others you can fiddle around with?
Try manage_changeProperties() instead.  I know (from
lib/python/OFS/Image.py) that the File object has its own
manage_edit() method, you could try that one.




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Re: [Zope] Populating a :list variable from the results of a ZSQLmethod

[Tony McDonald]

On 10/11/00 10:52 am, "Phil Harris" [EMAIL PROTECTED] wrote:

 tone,
 
 How about (untested):
 
 where 'dboptions' is the string pulled from the DB, and 'options' is the
 list needed.
 
 dtml-call "REQUEST.set('options',[])"
 dtml-in "_.string.split(dboptions[1:-1],',')"
 dtml-call "options.append(_.int(_['sequence-item']))"
 /dtml-in
 
 This would then give you take the string "['1','2','3']" and turn it into
 the list [1,2,3].
 
 hth
 
 Phil

Aha! That's just about what I'd come up with before. Ok, well to be honest I
actually got as far as the string.split and ended up using a _.string.find()
construct to get a pseudo-lookup working :)

I suppose to make it more generic, you'd lose the _.int() part.

Thanks for the info Phil.
--
Dr Tony McDonald,  Assistant Director, FMCC, http://www.fmcc.org.uk/
The Medical School, Newcastle University Tel: +44 191 222 5116
A Zope list for UK HE/FE  http://www.fmcc.org.uk/mailman/listinfo/zope


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[Zope] Re: DateTime

[Chris Withers]

These aren't really hosting related so I'm moving this to the
[EMAIL PROTECTED] list...

Thiebaut CHAMPENIER wrote:
 
 The official home page for this module is
 http://starship.python.net/~lemburg/mxDateTime.html (not responding rigth
 now)

IIRC, starship is down 'cos the Python team are moving to DC.

mxDateTime is _not_ the DateTime in Zope. If only it was

 BTW, DateTime is a Python module, it is not specific to Zope. 

Unless I'm mistaken, the one in Zope is specific to Zope ;-)

 The solution will look something like that:
 dtml-var expr="_.DateTime(date_posted)"

You may want soem fmt= in there, check the Zope Quick Reference...

cheers,

Chris

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[Zope] RE: Zope digest, Vol 1 #1049 - 28 msgs

[Harris Peter]

Hi all

I am strugging with accessing acl_users
from DTML, and maybe someone here can
tell me what I'm doing wrong.

I am trying to make a page where users
can change their own passwords.

I have a DTML document with "Manager"
proxy role.  It is a form that lets the user
enter "password" and "confirm" and
contains a hidden field for "name"
taken from AUTHENTICATED_USER.

It has a submit button with value "Change",
and in all respects, as far as I can tell,
should post in the same way as the
corresponding form in 
acl_users.manage_users?submit=edit

It posts to itself, where I do this:

dtml-if "REQUEST_METHOD=='POST'"
 dtml-call "REQUEST.set('roles',AUTHENTICATED_USER.getRoles())"
 dtml-var "acl_users.manage_users(REQUEST=REQUEST)"
/dtml-if

I don't get errors, but the password is not changed,
and I can't see why.

Has anyone ever got this sort of thing to work?
And if so, how?

Peter Harris




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Re: [Zope] Re: DateTime

[Jerome Alet]

On Fri, 10 Nov 2000, Chris Withers wrote:

 mxDateTime is _not_ the DateTime in Zope. If only it was

It's voting season, so I vote +10 for this one.

bye,

Jerome ALET - [EMAIL PROTECTED] - http://cortex.unice.fr/~jerome
Fac de Medecine de Nicehttp://wwwmed.unice.fr 
Tel: (+33) 4 93 37 76 30 Fax: (+33) 4 93 53 15 15
28 Avenue de Valombrose - 06107 NICE Cedex 2 - FRANCE



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Re: [Zope] Is data.fs corrupted?

[Chris Withers]

Chris McDonough wrote:
 
 I'm going to take a guess.  It would appear AFAICT that the ZDiscussions
 product installed an object which it hung off the root object (the
 application object) when it was first imported.  

Don't rememebr seeing anything like this in ZDiscussions when I was
looking over the code...

 The point being that I'd bet we'd find a programming error staring at us in
 this sequence of events if we looked hard enough.  Though it's tempting to
 call it a "ZODB corruption" problem, if you really get down to the lower
 levels, it's likely an application-level problem.

Maybe it's a Zope-level rather than ZODB level problem? Maybe some of
the ZClass machinery or product registration machinery is screwing
things up?

Given that people have reported this from more than one product now, I'd
be inclined to think it's not random bits of bad code in products. Maybe
there's a method/pattern which used to be okay/recommended which is now
causing problems?

cheers,

Chris

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Re: [Zope] ZCatalog and random key error

[Chris McDonough]

You will still see random key errors until Chris Petrilli puts his ZCatalog
fixes into the 2.2 branch (hopefully 2.2.3).

- Original Message -
From: "Bak @ kedai" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, November 09, 2000 11:56 PM
Subject: [Zope] ZCatalog and random key error


 hello all
 i'm about to venture into building a ZClass that will make use of
ZCatalog.
 is it 'safe' now?  i see that my zope2.2.2 now haven't encountered any
random
 key error yet.  what about others?

 also, will iterating through catalog index faster than iterating through
 ..say.. objectItems('meta-type')?

 looking for insight, advice, holes to avoid, etc

 thanks

 --

 http://www.kedai.com.my/kk
 http://www.kedai.com.my/eZine

 use Zope?  then you got HOPE!


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Re: [Zope] Is data.fs corrupted?

[Chris McDonough]

 Maybe it's a Zope-level rather than ZODB level problem? Maybe some of
 the ZClass machinery or product registration machinery is screwing
 things up?

This is possible.  Maybe even likely.

 Given that people have reported this from more than one product now, I'd
 be inclined to think it's not random bits of bad code in products. Maybe
 there's a method/pattern which used to be okay/recommended which is now
 causing problems?

Some of the product registration code has been overhauled by Tres Seaver
lately.. I wonder if he spotted anything that would have caused something
like this.


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Re: [Zope] Is data.fs corrupted?

[Stefan H. Holek]

On Fri, 10 Nov 2000, Chris Withers wrote:

 Chris McDonough wrote:
  
  I'm going to take a guess.  It would appear AFAICT that the ZDiscussions
  product installed an object which it hung off the root object (the
  application object) when it was first imported.  
 
 Don't rememebr seeing anything like this in ZDiscussions when I was
 looking over the code...
 
  The point being that I'd bet we'd find a programming error staring at us in
  this sequence of events if we looked hard enough.  Though it's tempting to
  call it a "ZODB corruption" problem, if you really get down to the lower
  levels, it's likely an application-level problem.
 
 Maybe it's a Zope-level rather than ZODB level problem? Maybe some of
 the ZClass machinery or product registration machinery is screwing
 things up?
 
 Given that people have reported this from more than one product now, I'd
 be inclined to think it's not random bits of bad code in products. Maybe
 there's a method/pattern which used to be okay/recommended which is now
 causing problems?

FWIW, I can also report this problem with ZDiscussions. In my case it
stemmed from not properly deleting the ZDiscussion product before moving
my Data.fs from 2.1.6 to 2.2.1 (I think). The symptom then was beeing
unable to create ZSQL Methods (!) because of a missing
../Products/ZDBase/ZDiscussions.py file which I "fixed" by installing
ZDBase again. I can however NOT import the ZDiscussions.zexp
anymore because of "Duplicate Class Ids".

Oh well,
Stefan 


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Re: [Zope] Is data.fs corrupted?

[Chris McDonough]

 FWIW, I can also report this problem with ZDiscussions. In my case it
 stemmed from not properly deleting the ZDiscussion product before moving
 my Data.fs from 2.1.6 to 2.2.1 (I think). The symptom then was beeing
 unable to create ZSQL Methods (!) because of a missing
 ../Products/ZDBase/ZDiscussions.py file which I "fixed" by installing
 ZDBase again

Man that's weird.  But it's good info.  Does the current PTK include
ZDiscussions?

 I can however NOT import the ZDiscussions.zexp
 anymore because of "Duplicate Class Ids".

So it looks like a ZClass didn't get cleaned up properly when you deleted
the ZDiscussions through-the-web product.  It might mean that there's a
reference to an object in that area somewhere else in the ZODB.

It'd be interesting for someone (not me, I'm booked) to think about how to
write a tool that could detect orphaned instances and "strange" references
in the ZODB.



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Re: [Zope] XML Document DTML's tree, HiperDOM

[Shane Hathaway]

Chris Withers wrote:
 
 Shane Hathaway wrote:
 
  Here's my guess: you have a complex XML document.  As you explore the
  document, Zope is setting a cookie that reflects the list of branches
  you have opened.  After opening a large number of branches, you reach
  the limit on the size of a cookie (somewhere in the range of 1024 or
  4096 bytes), making it so that the compressed data stored in the cookie
  gets truncated.  zlib then emits this cryptic error message.
 
 Is this dtml-tree being bad again?

Assuming my diagnosis is correct, it's more of a browser thing.

 If so, how the session information proposal/project getting along?
 
 Oh yeah, while I'm here, how's the HiperDOM project getting on? That
 stuff would be raally useful for a project here...

The answer to these questions and more can be found at dev.zope.org. 
The fishbowl keeps better track of projects than any human.

Shane

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[Zope] querying status in zsql

[Paul Zwarts]

Hi Zopers,

I have a processing script that takes emails and puts them into a table.
I bring up a table for confirmation and then submit the whole thing by a
iterative item:records zsql method.

My problem is that the table requires a unique primary key and quite
regularly there duplicates. So ofcourse it falls over with the expected
error. I have tried in the zsql method encapsulating the sql with a
dtml-if "checkforexistantrecord" and then at the bottom of the zsql
loop I commit so make sure the second time around, the data is checked.
This does not seem to work.

So what im left with wondering is, if I can query in the zsql method:
if error, then exit or go somewhere else

Is this possible? sorry to be very vague. The conundrum is the fact that
the zsql method it an item loop in its own, so i cannot seem to use an
if statement because it doesnt iterate by the normal dtml-in route

Any advice?

TIA,

--
Paz
Oratrix Development BV
http://www.oratrix.com
GRiNS SMIL Editor
-



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[Zope] DTML on Linux client

[Stephan Goeldi]

I checked my website www.goeldi.com with a SuSE Linux 7 client (Netscape) 
and discovered, that not all DTML is done right.

My index_html file has:

dtml-var standard_html_header

Welcome to our website.

dtml-var actual

dtml-var standard_html_footer

The header and footer are displayed correct. The welcome text of the 
index_html file too. But the dtml-var actual is not displayed at all. The 
text browser lynx has the same problem under linux. I tried it from a RedHat 
6.2 system with lynx - same problem.
The page is displayed correctly with any Windows browser.

What's going wrong here?
_
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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Re: [Zope] Is data.fs corrupted?

[Chris Withers]

Chris McDonough wrote:
 
  FWIW, I can also report this problem with ZDiscussions. In my case it
  stemmed from not properly deleting the ZDiscussion product before moving
  my Data.fs from 2.1.6 to 2.2.1 (I think). The symptom then was beeing
  unable to create ZSQL Methods (!) because of a missing
  ../Products/ZDBase/ZDiscussions.py file which I "fixed" by installing
  ZDBase again
 
 Man that's weird.  But it's good info.  Does the current PTK include
 ZDiscussions?

No

Chris :-)

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Re: [Zope] Is data.fs corrupted?

[Stefan H. Holek]

On Fri, 10 Nov 2000, Chris McDonough wrote:

  FWIW, I can also report this problem with ZDiscussions. In my case it
  stemmed from not properly deleting the ZDiscussion product before moving
  my Data.fs from 2.1.6 to 2.2.1 (I think). The symptom then was beeing
  unable to create ZSQL Methods (!) because of a missing
  ../Products/ZDBase/ZDiscussions.py file which I "fixed" by installing
  ZDBase again
 
 Man that's weird.  But it's good info.  Does the current PTK include
 ZDiscussions?

Ah yes, I also had some PTK version installed in the 2.1.6 Zope; in case
this might be of importance. 

  I can however NOT import the ZDiscussions.zexp
  anymore because of "Duplicate Class Ids".
 
 So it looks like a ZClass didn't get cleaned up properly when you deleted
 the ZDiscussions through-the-web product.  It might mean that there's a
 reference to an object in that area somewhere else in the ZODB.

I believe I *did not* delete ZDiscussions, but brought my Data.fs to
2.2.1 without having the product installed there. Operator error, I
suppose ;)

Funny thing is that I did not *use* any ZDiscussions, PTK or whatever
objects (anymore), just had the products hang around thinking they
were stale anyway...

Regards,
Stefan


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Re: [Zope] XML Document DTML's tree, HiperDOM

[Chris Withers]

Shane Hathaway wrote:
 
 The answer to these questions and more can be found at dev.zope.org.
 The fishbowl keeps better track of projects than any human.

The tempation to say "and the fishbowl confuses more humans than any
project can keep track of" was to great ;-)

It's not actually true, I guess, except for me. I went and had a look at
the HiperDOM project and couldn't make heads or tails of what the status
was. That put me off even looking for session tracking...

wuss? me?

probably... ;-)

Chris

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RE: [Zope] XML Document DTML's tree, HiperDOM

[Brian Lloyd]

  The answer to these questions and more can be found at dev.zope.org.
  The fishbowl keeps better track of projects than any human.
 
 The tempation to say "and the fishbowl confuses more humans than any
 project can keep track of" was to great ;-)
 
 It's not actually true, I guess, except for me. I went and had a look at
 the HiperDOM project and couldn't make heads or tails of what the status
 was. That put me off even looking for session tracking...

Note that the Fishbowl is still somewhat immature - the specific 
problem of finding out the status of things is something I'm 
working on (albeit slowly, unfortunately). Very Soon Now there 
will be some built-in support to help this. 

In the meantime, project leaders will need to go the extra mile 
to try to make it clear to readers where things stand. There is, 
after all, a "CurrentStatus" page dedicated to this. If the 
CurrentStatus is empty or clearly out of date, readers of the 
project should prod the project leader about that (their contact 
email should be in the project).


Brian Lloyd[EMAIL PROTECTED]
Software Engineer  540.371.6909  
Digital Creations  http://www.digicool.com 





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[Zope] why DTML confusing

[Irene Barg]

Hello All,

I do read HOW-TO's, User-Guides, etc., but I think DTML
must be made simpler, or better documentation, or more examples.
As an example, within an dtml-in loop:

1.  You can print the values of sequence-items with:

(index=dtml-var sequence-index,
 number=dtml-var sequence-number,
 item=dtml-var sequence-item)

2.  To test for equality, this does not:

dtml-if "sequence-index == 0"
   (dtml-var count-adassnum Records found)
/dtml-if

3.  While this does work:
dtml-if "_['sequence-index'] == 0"
   (dtml-var count-adassnum Records found)
/dtml-if

I say this is confusing.  Don't tell me to read the Namespace
How-to, or the Zope User Guides, I did, and it's still confusing! 
Unless you find an example, that does exactly what you want, trying to
figure it out with the documentation available can be difficult.  I
found my answer to this in the 
"How-To: (How-to) access the field names and fields of any arbitrary
ZSQL query", but it took a lot of searching the 
Zope site for references to 'dtml-in'. I get so frustrated with DTML, I
want to scream.  Please don't tell me to buy the Zope book, DTML should
be more intuitive.  DTML maybe the heart
of Zope, but it's also it's achilles heel.

-- irene

--
Irene Barg  Email:  [EMAIL PROTECTED]
Steward Observatory Phone:  520-621-2602
933 N. Cherry Ave.
University of Arizona   FAX:520-621-1891
Tucson, AZ  85721   http://nickel.as.arizona.edu/~barg
--

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Re: [Zope] DTML on Linux client

[Phil Harris]

My take is that it's a client issue.

Since you explicity mention that your using a Linux client, I'd assume
you've tried a windows client?  If so was it Ie/Netscape/Opera etc.

IE and Netscape in particular play by their own rules and render things
differently.  Maybe your html is causing one of those differences to
manifest itself.

When 'actual' doesn't appear in the browser window, can you check the source
for the page, and is the content there in the html?

It doesn't seem to be a Zope problem to me.

Phil

- Original Message -
From: "Stephan Goeldi" [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, November 10, 2000 2:31 PM
Subject: [Zope] DTML on Linux client


 I checked my website www.goeldi.com with a SuSE Linux 7 client (Netscape)
 and discovered, that not all DTML is done right.

 My index_html file has:

 dtml-var standard_html_header

 Welcome to our website.

 dtml-var actual

 dtml-var standard_html_footer

 The header and footer are displayed correct. The welcome text of the
 index_html file too. But the dtml-var actual is not displayed at all. The
 text browser lynx has the same problem under linux. I tried it from a
RedHat
 6.2 system with lynx - same problem.
 The page is displayed correctly with any Windows browser.

 What's going wrong here?
 _
 Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

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[Zope] Generating text/csv from DTML method, Mime Type?

[Brad Clements]

I'm create a CSV file that I would like browsers to get the "save as" 
dialog when they select it.

I'm using RESPONSE.write() to write out the CSV file, and I set the 
Content-Type before calling RESPONSE.write


Netscape seems to work ok, it pops up a save box for "text/csv" and 
"application/vnd.ms-excel".

However in both cases IE5.5 just ignores the data and re-requests the 
page.

Does anyone know *all* the steps I need to take to get this to work 
correctly with IE? I must be doing something wrong. I want to supply a 
CSV file, but generated dynamically. I'm sure I'm missing a header 
setting or something.



Brad Clements,[EMAIL PROTECTED]   (315)268-1000
http://www.murkworks.com  (315)268-9812 Fax
netmeeting: ils://ils.murkworks.com   AOL-IM: BKClements

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Re: [Zope] XML-RPC

[Steve Spicklemire]

Hi Jason,

   I've been working with Flash some lately as well.. with an eye
toward useful vector graphics for Zope. There is a library called ming
(http://www.opaque.net/ming) with a (SWIG'ed) python extension that
I've been slowing working through, adding wrapping fuctions and
getting to the point of Zope'ability. Ming is a 'swf' creation library
with no connection to Macromedia. Something like this would free folks
from the need to buy 'MM Flash' to work with swf output. It also would
make a great way to generate swf 'on the fly' within Zope.. I'll try to
get a proof of concept working 

-steve

 "Jason" == Jason Cunliffe [EMAIL PROTECTED] writes:

Jason Hello

Jason I am missing the start of this thread, so I may be off
Jason topic, but you might want to look seriously at Flash5 for
Jason the client side programming and graphics.

Jason PROS:

Jason 1. Flash5 ActionScript is _very_ close to JavaScript

Jason 2. Flash Player/Plugin is much smaller than SVG 300Kb
Jason vs. 13Mb I think + large user installed base.

Jason 3. Flash5 has new XML and XMLSockets objects which should
Jason integrate nicely with XMLRPC and Zope via some smooth
Jason Python external method programming.

Jason 4. Flash will allow _much_ more client side interactivity
Jason than SVG

Jason 5. You can port SVG graphics to Flash using various tools
Jason [or even write your own].

Jason 6. You can still use SVG JavaScript and do some comparisons
Jason where appropriate...

Jason 7. Flash is more mature than SVG, though I agree SVG is
Jason developing very well. I expect we shall see some serious
Jason applications during next 12 months with it.

Jason 8. Flash is very object-oriented once you grok to its
Jason design. Thus mirrors Zope very well.

Jason CONS:

Jason A. Flash has steepish learning curve, but high payback and
Jason reusability.  [Not as tough as Zope :-) ] B. SVG is fully
Jason open; the Flash spec is 'published' but not open in the
Jason same way.  C. must be more but cant thing of them right now

Jason If you are interested contact me - I have lots of useful
Jason research on this topic.

Jason - Jason

Jason ___
Jason Jason Cunliffe = Nomadics['Interactive Art+Technology']


 - Original Message - From: "Hannu Krosing"
 [EMAIL PROTECTED] To: "David Nimmons" [EMAIL PROTECTED]

 | David Nimmons wrote:
 | 
 |  I am trying to develop a web based interface to automation
 equipment (Allen |  Bradley plc's in this case) to use for an
 operator interface. I am
Jason using
 |  SVG to develop graphics and want to use javascript to
 manipulate the |  graphics based on data from the plc. I am
 looking for a way to pull
Jason more
 |  data from the server without having to reload the page. My
 question is will |  XML-RPC allow this. Or does Zope have some
 other mechanism that would allow |  this. Thanks for any help.
 |
 | Actually this is mainly a client-side problem, on server side
 you have | total | freedom to serve any protocol ;)
 |
 | Often this kind of problem is solved by having twho frames
 and data is | aquired | by reloading the "data-page" which then
 manipulates the | "presentation-page" | using javascript,
 possibly in its onLoad method.



Jason ___ Zope
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Re: [Zope] DTML on Linux client

[Stephan Goeldi]

Sorry, in fact this was a 'cache-problem'. I always have to hit the 'reload' 
button to get the right content. In Windows the old content was shown, in 
Linux the actual (because I did not browse before on this page).

In the management screens too I always must hit reload after a change of the 
content.

I checked my website www.goeldi.com with a SuSE Linux 7 client (Netscape)
and discovered, that not all DTML is done right.

_
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[Zope] DataSkin Supplier?

[Chris Withers]

Hello...

Okay, I'm still staring up at the ZPatterns learning cliff as I write
this so forgive my ignorance.

I'm looking at ZPatterns WRT to 'dynamically generated dataskins'.

You what? Well, okay, I'll try and explain...

Firstly, I'm assuming that DataSkins (or their subclasses?) are
first-class zope objects, can be 'added', copied, pasted, have security
tabs, can be catalogued, URL traversed, etc, etc. Is that assumption
correct?

I hope so :-S

If it is, is there something which can generate DataSkins on the fly?
ie: in the same way an AttributeProvider supplier attributes to an
object, is there something like a 'DataSkin provider' which provides
whole dataskins to a folderish object?

Finally, and this is the important bit. Can one of these folderish
objects also _be_ a DataSkin? So, to word it differently, there is a
root 'DataSkin provider'. This provides DataSkins which are folderish
and are also 'DataSkin providers' themselves.

Why do I want this? Well, think objects in a tree where the
parents/children are stored as a list of names refering to other
objects. In addition, objects may have multiple parents, etc...

Any ideas? Where should I start reading?

cheers,

Chris

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Re: [Zope] Generating text/csv from DTML method, Mime Type?

[Oliver Bleutgen]

 I'm create a CSV file that I would like browsers to get the "save as"
 dialog when they select it.

 I'm using RESPONSE.write() to write out the CSV file, and I set the
 Content-Type before calling RESPONSE.write


 Netscape seems to work ok, it pops up a save box for "text/csv" and
 "application/vnd.ms-excel".

 However in both cases IE5.5 just ignores the data and re-requests the
 page.

 Does anyone know *all* the steps I need to take to get this to work
 correctly with IE? I must be doing something wrong. I want to supply a
 CSV file, but generated dynamically. I'm sure I'm missing a header
 setting or something.
Adding "Content-Disposition: attachment [; filename=bla.csv]" as a http-header might 
help...
The part in []s is optional .
See my mail from yesterday for a bit more info

cheers,
oliver

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Re: [Zope] querying status in zsql

[Rik Hoekstra]

 I have a processing script that takes emails and puts them into a table.
 I bring up a table for confirmation and then submit the whole thing by a
 iterative item:records zsql method.

 My problem is that the table requires a unique primary key and quite
 regularly there duplicates. So ofcourse it falls over with the expected
 error. I have tried in the zsql method encapsulating the sql with a
 dtml-if "checkforexistantrecord" and then at the bottom of the zsql
 loop I commit so make sure the second time around, the data is checked.
 This does not seem to work.

 So what im left with wondering is, if I can query in the zsql method:
 if error, then exit or go somewhere else

 Is this possible?

yes, this is possible. If I understand your question at least. BTW This is
untested, but I have used something similar before

mailid is the input field/variable for your method

dtml-in emailitems
   dtml-in checkexistant_error(mailid=mailid) (if this is another zsql
method)
dtml-if sequence-start
   skip or do something else
 dtml-else
upload your email. You may want to call another Zsql method
for this
 /dtml-if
/dtml-in
dtml-in




 sorry to be very vague. The conundrum is the fact that
 the zsql method it an item loop in its own, so i cannot seem to use an
 if statement because it doesnt iterate by the normal dtml-in route

 Any advice?


hth

Rik


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Re: [Zope] Is data.fs corrupted?

[Simon Michael]

Thanks for the informative thread. FWIW, I see this problem too. It's
preventing me from importing various PTK  Membership .zexp's.

-Simon

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Re: [Zope] why DTML confusing

[peter bengtson]

It's a give-and-take I think.
I had the same confusion as you have right now, but after a while you learn
this syntax pretty well.
This is the same as with all syntax, and as soon as you have learned the
basics the rest is easy and from then on a matter of learning how to use
extensive functions and methods.

I found DTML confusing as well in the begining, but I know feel that DTML is
not bad at all.
The DTML syntax is sometimes even more convenient than - otherwise known to
be simple - PHP syntax.
If you read the Zope Book by Michael and Amos you'll be told to use Python
Methods for almost all functionality and leave DTML as a very basic tool for
your content visualization.

Don't give up Irene! This is just part of the steep (almost exponential)
Zope learning curve.

Greetings, peter

 I say this is confusing.  Don't tell me to read the Namespace
 How-to, or the Zope User Guides, I did, and it's still confusing!
 Unless you find an example, that does exactly what you want, trying to
 figure it out with the documentation available can be difficult.  I
 found my answer to this in the
 "How-To: (How-to) access the field names and fields of any arbitrary
 ZSQL query", but it took a lot of searching the
 Zope site for references to 'dtml-in'. I get so frustrated with DTML, I
 want to scream.  Please don't tell me to buy the Zope book, DTML should
 be more intuitive.  DTML maybe the heart
 of Zope, but it's also it's achilles heel.



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Re: [Zope] why DTML confusing

[Simon Michael]

Irene Barg [EMAIL PROTECTED] writes:
 1.  You can print the values of sequence-items with:
 
 (index=dtml-var sequence-index,
  number=dtml-var sequence-number,
  item=dtml-var sequence-item)
 
 2.  To test for equality, this does not:
 
 dtml-if "sequence-index == 0"
(dtml-var count-adassnum Records found)
 /dtml-if
 
 3.  While this does work:
 dtml-if "_['sequence-index'] == 0"
(dtml-var count-adassnum Records found)
 /dtml-if
 
 I say this is confusing.  Don't tell me to read the Namespace
 How-to, or the Zope User Guides, I did, and it's still confusing! 
 Unless you find an example, that does exactly what you want, trying to
 figure it out with the documentation available can be difficult.  I
 found my answer to this in the 
 "How-To: (How-to) access the field names and fields of any arbitrary
 ZSQL query", but it took a lot of searching the 
 Zope site for references to 'dtml-in'. I get so frustrated with DTML, I
 want to scream.  Please don't tell me to buy the Zope book, DTML should
 be more intuitive.  DTML maybe the heart
 of Zope, but it's also it's achilles heel.
 
 -- irene
 
 --
 Irene BargEmail:  [EMAIL PROTECTED]
 Steward Observatory   Phone:  520-621-2602
 933 N. Cherry Ave.
 University of Arizona FAX:520-621-1891
 Tucson, AZ  85721 http://nickel.as.arizona.edu/~barg
 --
 
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Re: [Zope] why DTML confusing

[The Doctor What]

* peter bengtson ([EMAIL PROTECTED]) [001110 10:40]:
 It's a give-and-take I think.
 I had the same confusion as you have right now, but after a while you learn
 this syntax pretty well.
 This is the same as with all syntax, and as soon as you have learned the
 basics the rest is easy and from then on a matter of learning how to use
 extensive functions and methods.

Considering that DTML is supossed to be for web/html writers, *not*
for programmers, I think that's not a good attitude to take.

I don't want web-writers having to figure out that to access a
variable, *that was being use a second ago with no extra syntax*
suddenly needs _[''] wrapped around it.  It doesn't make any sense
UNLESS you know what's going on underneith.

And since the whole attitude for Zope is, "do it right".  I'd say
this needs to be addressed at some point.

Ciao!

-- 
Although the moon is smaller than the earth, it is farther away.

The Doctor What: A really hip dude   http://docwhat.gerf.org/
[EMAIL PROTECTED]   KF6VNC

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Re: [Zope] querying status in zsql

[Paul Zwarts]

Thanks for that... Although Im not terribly sure what the magic behind the
sequence-start is, but it works very well.

Cheers,


--
Paz
Oratrix Development BV
http://www.oratrix.com
GRiNS SMIL Editor
-

Rik Hoekstra wrote:

 
  I have a processing script that takes emails and puts them into a table.
  I bring up a table for confirmation and then submit the whole thing by a
  iterative item:records zsql method.
 
  My problem is that the table requires a unique primary key and quite
  regularly there duplicates. So ofcourse it falls over with the expected
  error. I have tried in the zsql method encapsulating the sql with a
  dtml-if "checkforexistantrecord" and then at the bottom of the zsql
  loop I commit so make sure the second time around, the data is checked.
  This does not seem to work.
 
  So what im left with wondering is, if I can query in the zsql method:
  if error, then exit or go somewhere else
 
  Is this possible?

 yes, this is possible. If I understand your question at least. BTW This is
 untested, but I have used something similar before

 mailid is the input field/variable for your method

 dtml-in emailitems
dtml-in checkexistant_error(mailid=mailid) (if this is another zsql
 method)
 dtml-if sequence-start
skip or do something else
  dtml-else
 upload your email. You may want to call another Zsql method
 for this
  /dtml-if
 /dtml-in
 dtml-in

  sorry to be very vague. The conundrum is the fact that
  the zsql method it an item loop in its own, so i cannot seem to use an
  if statement because it doesnt iterate by the normal dtml-in route
 
  Any advice?

 hth

 Rik

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RE: [Zope] why DTML confusing

[Steve Drees]

 It might be that fixing one or both of the above would reduce the DTML
 pain factor quite a bit. Certainly, it's time to do whatever it takes
 to banish these "-"-named variables, IMHO.

Agreed. But DC always raises objections when this is brought up.

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[Zope] Dr.Watson on NT

[Júlio Dinis Silva]

Hi all,
Is there a NT guru in the house :-)

Zope 222

Sometimes Zserver goes Zombie, I login on the machine and I see a
DrWatson Window. I close DrWatson window and the process automagically
restarts, and everything ok.

Whenever this happens two logs are written in EventLogger:
-one is a Warning: Restarting Zope...
-one is a Info: starting Zope...
With a couple of seconds of distance in time between them.

I can see something is puting ZServer zombie and I'm looking
at debug to find the sucker method :-) but this DrWatson
behaviour never seen by me before: could be Zope doing a Zombie Timeout and 
restarting himself? If yes why does he hangs and only by closing the 
DrWatson Window the python.exe process really restarts?

Any comments, tips, Dr.Watson Guru?
Best Regards,
Júlio Dinis Silva
_
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Share information about yourself, create your own public profile at 
http://profiles.msn.com.


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[Zope] ZClass

[kosh]

From inside what object should I inherit from to get a history option for
a zclass or what method would I need to write. I have looked at lots of
examples of zclasses and so far none of them have a history tab. 

I am working with the STX_Document type and made a new zclass based on
that which includes renderable and catalogaware as base classes. Those
were the instructions on the STX document page but that still did not give
me the option for a history tab but it did fix other things that I needed.

Thanks
Kosh



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RE: [Zope] Generating text/csv from DTML method, Mime Type?

[Farrell, Troy]

I know this sounds silly, but try making the url end with .csv
I wrote a perl cgi script some time ago that spit out a csv file.  When it
ended with .csv, IE seemed to ignore the server's Content-type: text/html
header.

http://finance.yahoo.com/q?s=WCGd=v1
Look, my stock is falling!  Actually, if you look at the link below and to
the right of the table, you'll see a download spreadsheet link.  Yahoo uses
a e=.csv to set the extension.  Presumably, the e value is for extension.

Troy

-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, November 10, 2000 11:15 AM
To: [EMAIL PROTECTED]
Subject: Re: [Zope] Generating text/csv from DTML method, Mime Type?


"Brad Clements" [EMAIL PROTECTED] writes:

 I'm create a CSV file that I would like browsers to get the "save as" 
 dialog when they select it.
 
 I'm using RESPONSE.write() to write out the CSV file, and I set the 
 Content-Type before calling RESPONSE.write
 
 
 Netscape seems to work ok, it pops up a save box for "text/csv" and 
 "application/vnd.ms-excel".
 
 However in both cases IE5.5 just ignores the data and re-requests the 
 page.
 
 Does anyone know *all* the steps I need to take to get this to work 
 correctly with IE? I must be doing something wrong. I want to supply a 
 CSV file, but generated dynamically. I'm sure I'm missing a header 
 setting or something.

FWIW, I recently had to support a customer in downloading files for
use by spreadsheet software. After a little investigating, especially
at the IETF web/FTP site, I discovered that there is no registered
MIME type "text/csv". Can anyone refute this?

There is a registered MIME type "text/tab-separated-values". Based on
something I read recently on the Zope site, it may be that if you set
the MIME type to application/vnd.ms-excel but send a tab separated
values file, excel will open it. I haven't tried this though.

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Re: [Zope] why DTML confusing

[Andy McKay]

 It might be that fixing one or both of the above would reduce the DTML
 pain factor quite a bit. Certainly, it's time to do whatever it takes
 to banish these "-"-named variables, IMHO.


I agree, changing the "-" to "_" would remove a whole ton of posts on this
list and mean I could chop a whole bunch of dtml-let item=sequence-item. I
really only see negative reasons for a "-".

--
  Andy McKay, Developer.
  ActiveState.


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[Zope] restarting zope.org

[ethan mindlace fremen]

we'll be back after these messages.

~ethan


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[Zope] Can Zope use a Different Python?

[Gary Perez]

Hi.

We've got Zope 2.2.2 installed on a Linux box. We want to be able to use
the full-up python that's on the box instead of the python interpreter
that comes with Zope for playing with External Methods.

Is there any way to circumvent Zope's python in this way?

If not, what's the easiest way to extend Zope to be able to use our
non-Zope python?

Alternatively, we're plagued by import and attribute errors when
accessing the External Methods. Will simply moving (or linking?) all the
pieces (whatever.py, __init__.py, etc.) into a subdirectory of "Shared"
fix the problem?

Thanks in advance for your help.
-GMP

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RE: [Zope] Generating text/csv from DTML method, Mime Type?

[Oliver Bleutgen]

 I know this sounds silly, but try making the url end with .csv
 I wrote a perl cgi script some time ago that spit out a csv file.  When it
 ended with .csv, IE seemed to ignore the server's Content-type: text/html
 header.

 http://finance.yahoo.com/q?s=WCGd=v1
 Look, my stock is falling!  Actually, if you look at the link below and to
 the right of the table, you'll see a download spreadsheet link.  Yahoo
 uses
 a e=.csv to set the extension.  Presumably, the e value is for extension.

That isn't silly, it corresponds exactly with the description you can find at

http://msdn.microsoft.com/workshop/networking/moniker/overview/appendix_a.asp

There term silly seems much more suitable for that, btw.

Btw., it shows that changing the extension to .csv won't help until
one has registered an application for .csv-files in windows. 
And in fact, the "spreadsheet"-link showed up in my IE, no download window
came up...

cheers,
oliver




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RE: [Zope] why DTML confusing

[Max M]

From: Andy McKay

 It might be that fixing one or both of the above would reduce the DTML
 pain factor quite a bit. Certainly, it's time to do whatever it takes
 to banish these "-"-named variables, IMHO.

I agree, changing the "-" to "_" would remove a whole ton of posts on this
list and mean I could chop a whole bunch of dtml-let item=sequence-item.
I
really only see negative reasons for a "-".

For once I will send a "me too" to the list. "sequence-item" is a simple and
plain design error. Decapricate it and and let us use "sequence_item" etc.
together with the other for a while and then drop the old form.

It is the single most annoying thing in dtml, and as far as I can see in the
source it should be trivial to give all those sequence-* a sequence_* name
also.

Regards Max M

Max M. W. Rasmussen,Denmark.   New Media Director
private: [EMAIL PROTECTED] work: [EMAIL PROTECTED]
-
Specialization is for insects.  -  Robert A. Heinlein


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[Zope] bad expression evaluation

[seb bacon]

I'm trying to compare two page titles, using this code:

dtml-call "REQUEST.set('my_title',get_page_title)"
dtml-in "PARENTS[1].objectValues(['Folder'])"
  dtml-my_title; : dtml-get_page_title
  dtml-if "my_title!=get_page_title"
  dtml-var title_or_id
  /dtml-if
/dtml-in

Now I can see on the page that my_title and get_page_title are the same.  I have also 
tried comparing _.str(my_title) and _.str(get_page_title) just to make sure I was 
comparing strings.  But the if clause always evaluates true.  Any ideas?

cheers,
seb.

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RE: [Zope] Generating text/csv from DTML method, Mime Type?

[Stefan H. Holek]

On Fri, 10 Nov 2000, Farrell, Troy wrote:

 I know this sounds silly, but try making the url end with .csv
 I wrote a perl cgi script some time ago that spit out a csv file.  When it
 ended with .csv, IE seemed to ignore the server's Content-type: text/html
 header.

Not silly! I have also seen IE prefer the file extension over any MIME
type, HTTP header or whatever interoperable standard you may come up with.
Welcome to the Micro$oft way of making the Internet an extension of
its  desktop...



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Re: [Zope] Can Zope use a Different Python?

[Stefan H. Holek]

On Fri, 10 Nov 2000, Gary Perez wrote:

 We've got Zope 2.2.2 installed on a Linux box. We want to be able to use
 the full-up python that's on the box instead of the python interpreter
 that comes with Zope for playing with External Methods.

 Is there any way to circumvent Zope's python in this way?

get the source distribution

 Alternatively, we're plagued by import and attribute errors when
 accessing the External Methods. Will simply moving (or linking?) all the
 pieces (whatever.py, __init__.py, etc.) into a subdirectory of "Shared"
 fix the problem?

check your PYTHONPATH in the start script

hth,
stefan


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RE: [Zope] Generating text/csv from DTML method, Mime Type?

[Farrell, Troy]

I telneted into the link I gave below and here is the RESPONSE:

HTTP/1.0 200 OK
Date: Fri, 10 Nov 2000 19:26:52 GMT
Cache-Control: private
Connection: close
Content-Type: application/octet-stream
Set-Cookie: B=48be9l0t0oivtb=2; expires=Thu, 15 Apr 2010 20:00:00 GMT;
path=/;
domain=.yahoo.com
 
"WCG",15.625,"11/10/2000","1:57PM",-1.8125,17.375,17.375,15.625,671100

So you can see that they are using the MIME type of
application/octet-stream.
They also set a cookie.  I hate cookies.

Troy
-Original Message-
From: Oliver Bleutgen [mailto:[EMAIL PROTECTED]]
Sent: Friday, November 10, 2000 12:37 PM
To: [EMAIL PROTECTED]
Subject: RE: [Zope] Generating text/csv from DTML method, Mime Type?


 I know this sounds silly, but try making the url end with .csv
 I wrote a perl cgi script some time ago that spit out a csv file.  When it
 ended with .csv, IE seemed to ignore the server's Content-type: text/html
 header.

 http://finance.yahoo.com/q?s=WCGd=v1
 Look, my stock is falling!  Actually, if you look at the link below and to
 the right of the table, you'll see a download spreadsheet link.  Yahoo
 uses
 a e=.csv to set the extension.  Presumably, the e value is for extension.

That isn't silly, it corresponds exactly with the description you can find
at

http://msdn.microsoft.com/workshop/networking/moniker/overview/appendix_a.as
p

There term silly seems much more suitable for that, btw.

Btw., it shows that changing the extension to .csv won't help until
one has registered an application for .csv-files in windows. 
And in fact, the "spreadsheet"-link showed up in my IE, no download window
came up...

cheers,
oliver

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RE: [Zope] Generating text/csv from DTML method, Mime Type?

[Eric Walstad]

Here's some DTML I use to generate a CSV file on the fly using data returned
from a query of a MySQL database:

dtml-call "RESPONSE.setHeader('Content-Type',
'application/x-csv')"dtml-in qryAllDB
dtml-if sequence-start
FirstName,MiddleName,LastName,Address,City,State,Zip,Phone,Fax,Email,URL,Bir
thday
/dtml-if sequence-start
dtml-var FirstName null='',dtml-var MiddleName null='',dtml-var
LastName null='',dtml-var Address null='',dtml-var City
null='',dtml-var State null='',dtml-var Zip null='',dtml-var Phone
null='',dtml-var Fax null='',dtml-var email null='',dtml-var URL
null='',dtml-var Birthday null=''
/dtml-in

Notice that formatting is kinda ugly.  That's so that I don't get any
unwanted carriage returns nor any line feeds in the downloaded file.
Also, notice that the first line of the output (after the Content-Type, that
is) is a header line, which you may not want for your output.  I include it
so that when the file is viewed in a spreadsheet, the user can tell what
each column is.

FYI, I found a lot of info on this technique on NIP Ltd's mailing list
archive (Thanks again NIP!!):
http://zope.nipltd.com/public/lists.html


HTH,

Eric.

// -Original Message-
// From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
// Oliver Bleutgen
// Sent: Friday, November 10, 2000 8:12 AM
// To: [EMAIL PROTECTED]
// Subject: Re: [Zope] Generating text/csv from DTML method, Mime Type?
//
//
//  I'm create a CSV file that I would like browsers to get the "save as"
//  dialog when they select it.
//
//  I'm using RESPONSE.write() to write out the CSV file, and I set the
//  Content-Type before calling RESPONSE.write
//
//
//  Netscape seems to work ok, it pops up a save box for "text/csv" and
//  "application/vnd.ms-excel".
//
//  However in both cases IE5.5 just ignores the data and re-requests the
//  page.
//
//  Does anyone know *all* the steps I need to take to get this to work
//  correctly with IE? I must be doing something wrong. I want to supply a
//  CSV file, but generated dynamically. I'm sure I'm missing a header
//  setting or something.
// Adding "Content-Disposition: attachment [; filename=bla.csv]" as
// a http-header might help...
// The part in []s is optional .
// See my mail from yesterday for a bit more info
//
// cheers,
// oliver
//
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Re: [Zope] why DTML confusing

[Morten W. Petersen]

[Max M.]

| For once I will send a "me too" to the list. "sequence-item" is a simple and
| plain design error. Decapricate it and and let us use "sequence_item" etc.
| together with the other for a while and then drop the old form.

I'd like to join this mob.  ;)

It's painful and ugly to use "_['sequence-item']", "_['sequence-index']" etc...

-Morten

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[Zope] bookmark importer

[Philipp Dunkel]

Hello guys I' have here a pyton file that allows you to import your
bookmarks from IE.
The following prob is that it works on windows98 zope 2.2.2  and not on a
unix system.
The file temp.txt stays empty and you get the message 'unable to export
favourites'

anyone any idea?




def GetBookmark(self):
import string
if self.REQUEST['HTTP_USER_AGENT']=='PostFavorites':
 print self.REQUEST.cookies
file = self.REQUEST.stdin
 if file:
file.seek(0)
LBook=[]
while 1:
line = file.readline()
if not line: break
LBook.append(line)
RBookmarkList=RList(LBook[RFirst(LBook):len(LBook)])
print RBookmarkList
ftemp = open('temp.txt','w')
ftemp.write(RBookmarkList)
ftemp.close()
return 'RBookmarkList'
else:
s='A
HREF=''javascript:window.external.ImportExportFavorites(false,'
s=s+'"http://aegis:8080/Bookmarker");'
s=s+'window.location.reload();Click me.../AP'
ftemp = open('temp.txt','r')
if ftemp:
  l=ftemp.readline()
  ftemp.close()
  ftemp = open('temp.txt','w')
  ftemp.close()
  if l:
s=s+l
return s

def RFirst(l):
  import string
  for i in range(len(l)):
if (string.find(l[i],"DL")-1): return i
  return None

def RLast(l):
  import string
  k=0
  for i in range(len(l)):
if string.find(l[i],"DL")-1: k=k+1
if string.find(l[i],"/DL")-1: k=k-1
if k==0: return i

def RList(LD):
  import string
  Dict=''
  LDict=''
  iLast=0
  for i in range(len(LD)):
if i=iLast :
  l=LD[i]
  if (string.find(l,"DTA HREF")-1):
s=l[string.find(l,"A HREF")+9:len(l)]
s0=s[0:string.find(s,'"')]
s=s[string.find(s,"")+1:len(s)]
s=s[0:string.find(s,"")]
Dict='{title:"'+s+'", url:"'+s0+'"}'
if LDict=="":
  LDict=Dict
else:
  LDict=LDict+','+Dict
  if (string.find(l,"DT")-1) and (string.find(l,"A HREF")==-1):
s=l[string.find(l,"DT")+4:len(l)]
s=s[string.find(s,"")+1:len(s)]
s=s[0:string.find(s,"")]
iFirst=i+1
iLast=RLast(LD[iFirst:len(LD)])+iFirst
LDNew=RList(LD[iFirst:iLast])
Dict='{'+s+':['+LDNew+']}'
if LDict=="":
  LDict=Dict
else:
  LDict=LDict+','+Dict
  return LDict

TIA

Rishi


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Re: [Zope] why DTML confusing

[Charlie Wilkinson]

First Simon, thanks for your message.  Yours is one of the most articulate
explanations I've seen on this topic.

Simon Michael [EMAIL PROTECTED] writes:
 Irene Barg [EMAIL PROTECTED] writes:

[examples of DMTL confusion...]
 
 It is confusing. There are two systems of syntax in use here - DTML's
 and python's. Once you start using "" expressions, you have left DTML
 and you are in the python world. 

...or "the python world with some Zope limitations placed on it."

There's a third world of course, HTML.  Most of us probably have that
down solid, so we tend not to think of it in the context of "skills
needed to master Zope."  But whether it's wrapping data in an HTML
table, or how to create dynamic CGI forms, mastering the integration of
HTML and DTML is a critical skill that some apparently find difficult.
(I've seen HOWTO's for it...)

 - unfortunate reality #1: you have to use "" expressions to do any
 kind of comparison, so you are pretty much forced into dealing with
 these two worlds right from the beginning.

That's fine, but in the interests of good will and sanity, Zope should
probably have a big fat warning label saying "DO NOT VENTURE HERE IF
YOU DO NOT ALREADY KNOW, OR PLAN TO LEARN PYTHON."

I did know Zope was written in Python.  I did not expect that I would have
to learn it.  Maybe that was stupid on my part, but that's what I thought.

 Still, entering the python world would normally be a good thing, since
 syntax there is simple and consistent. But,
 
 - unfortunate reality #2: certain legacy zope variables contain "-" in
 their name. In the python world, this is illegal (or rather it means
 something different) and so you are forced to remember constructs like
 _['sequence-index'] all the time.
 
 It might be that fixing one or both of the above would reduce the DTML
 pain factor quite a bit. Certainly, it's time to do whatever it takes
 to banish these "-"-named variables, IMHO.

Yes, it would help a lot.  _[] is about as non-intuitive as you can get,
especially after mixing in all the single and double quotes.  Sure, if
you understand python and how DTML wraps around it, it all makes sense,
but that's a pretty narrow market and DMTL simply doesn't need to be
that obfuscated.  If the intended market is simply "people who grok
Python", then there's really no point in something as Point n' Click n'
GUI as Zope is.

I certainly don't have all the answers, but it seems a simple matter to
allow both sequence-index *and* sequence_index - i.e., create underscore
equivalents alongside all the legacy "hyphen" variables.  If I recall,
I've even seen some user-contributed patches on this list to do just that.

That's just one example of something in Zope that's "too difficult"
screaming for change.  But one of the practical advantages of making
that kind of change is that the people who contribute their valuable
time to help the newbies (and not-so-newbies) on this list won't spend
quite so much time saying

Try this:

dtml-in "AUTHENTICATED_USER.getRoles()"
  dtml-if "_['sequence-item'] == 'Admin'"
dtml-call "REQUEST.set('edit_ok','y')"
  /dtml-if
/dtml-in

That's an awful lot of weird syntax glue just to walk a list and set a
value based on values in the list.  If someone asked how to do that on a
Perl mailing list, they'd be RTFM'ed and run out of town.  Maybe that's
not an entirely fair comparison, but still, how much of that syntax
nightmare might be avoidable?  I really don't know enough to say.
Obviously *everything* has to be wrapped in something that at least
distinguishes DTML from HTML.  How quickly or deeply (or just *how*)
one should get into python after that is another matter.

Zope reminds me of NT in some ways (except that I *like* Zope).
Zope, like NT, presents this illusion of friendly, easy learning curve,
straight-forward "get the job done and move on" philosophy.  At least that
was my first impression.  Then reality struck and I'm still recovering!
What keeps me working with Zope is not so much what Zope is, but the
promise of what it can be.  (And the hope that when I'm finally a Python
ace and understand the Zope source code from nose to tail, I'll be ready
to work in DTML ;-)

-cw-

-- 
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Re: [Zope] ZClasses inheriting property(sheets) : yes/no?

[Jim Washington]

Hi, Aaron

Yes.

If your parent ZClass is constructed properly, you should be able to add
the parent class's management tabs by setting a "view". On the "Views"
tab, look in the Method list for
propertysheets/[ParentClassPropertySheetName]/manage.  The properties on
that sheet are accessible just like any of the child class's properties.

-- Jim Washington

Aaron Straup Cope wrote:
 
 Hi,
 
 If I create a ZClass that inherits another ZClass, do I also inherit the
 latter's properties/propertysheet? From what I've read so far, I thought
 the answer was yes but I can't seem to figure out how to *get* at them.
 
 I created a ZClass called "Foo" that inherits a ZClass named "Meta". Meta
 had two properties : author and title but neither appear to be set when
 I create a new Foo object.
 
 I banged out something in plain-old Python (see below) since I was pretty
 sure this was the kind of thing Python was so good for (I am normally a
 Perl weeniesh :-) and everything worked fine.
 
 I've been looking around the docs and the how-to's but nothing seems to
 discuss the idea of inheriting properties (?) across ZClasses. Is it
 possible?
 
 Thanks,
 
 class Meta:
def __init__(self,title,author,timestamp,keywords,body,public,display):
self.title = title
self.author= author
self.timestamp = timestamp
self.keywords  = keywords
self.body  = body
self.display   = display
self.public= public
 
 
 
 from Meta import Meta
 class Library(Meta):
   def
 __init__(self,title,author,timestamp,keywords,body,public,display,foo,bar=""):
 
 Meta.__init__(self,title,author,timestamp,keywords,body,public,display)
   self.foo = foo
   self.bar = bar
 
 
 
 from Meta import Meta
 class LibraryClass(Meta):
   def __init__(self,title,author,timestamp,keywords,body,public,display):
 Meta.__init__(self,title,author,timestamp,keywords,body,public,display)
 
 ***
 
 # from yadda yadda import ...
 lib  = Library("budwork","bud","now",["foo","bar"],"bobdy",1,0,"foopybird")
 libclass = LibraryClass("classwork","bud","now",["foo","bar"],"bobdy",1,0)
 
 print "Class Title is " + lib.title
 print "LibClass Title is " + libclass.title
 
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-- 

Jim Washington
Center for Assessment, Evaluation and Educational Programming
Department of Teaching and Learning, Virginia Tech

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[Zope] why DTML confusing

[Spicklemire, Jerry]

Irene says:

 I get so frustrated with DTML, I want to scream.  
 Please don't tell me to buy the Zope book, 
 DTML should be more intuitive.  
 DTML maybe the heart of Zope, 
 but it's also it's achilles heel.

You're right about the confusion, frustration, nor are you alone. 
Still, DTML isn't the heart of Zope, it's more like the fascia. 
DTML was intended to make the task of delivering dynamic content 
wrapped up in HTML-ish Templates easier. It evolved, and took on 
a broader scope that made it enticing for lot's of "other stuff". 

Like most evolution, there are obvious benefits, and some 
unfavorable outcomes. The most glaring problems show up when 
you start trying to do things that seem to be just a step or 
two more sophisticated than simple examples that "just work". 

There's good news. Python Methods, or whatever we end up calling 
them, make actually implementing such things as easy as Py(thon). 
For some folks, it may look like the bad news is, "Now I have to 
learn Python". In perspective, learning Python is way better than 
wading through the Zope API via DTML. Way way better. 

So, the moral is, keep the DTML as simple as it can be. For 
anything else, reach for another tool. Zope has bunches of them.

BTW, the dtml-if "_['sequence-item'}" stuff is the tip of the 
DTML Complexity Iceberg. The sooner you get comfortable with 
Python Methods, ZClasses, etc., the happier you'll be.

One last point. Python Methods (a.k.a. Restricted, Internal, or 
some other as yet unheard of alternative, which we are all 
anxiously awaiting) is an add-on at this point. Target date 
for inclusion as part of the standard "Core Zope" is Zope v.2.3.

For now, see: http://www.zope.org/Members/4am/PythonMethod
 
Later,
Jerry S.
 

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[Zope] Status of HiperDom (Re: XML Document DTML's tree, HiperDOM)

[Lalo Martins]

On Fri, Nov 10, 2000 at 10:28:44AM +, Chris Withers wrote:
 
 Oh yeah, while I'm here, how's the HiperDOM project getting on? That
 stuff would be raally useful for a project here...

HiperDom is usable right now; we've been quite quiet because
we're working on documentation and unit testing (and to have
unit testing, we had to have ZUnit).

The low version number is because we're not very sure about the
syntax and we wanted feedback on it from the community.

However, that just isn't happening, and we're tempted to call
the results of documentation and testing 1.0, then after
feedback and possible syntax modifications work on a 2.0.

Right now, we would "raally" encourage you to use HiperDom
in your project, specially if the deployment schedule = 2
months, and then please send us that feedback :-)

[]s,
   |alo
   +
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News for, uh, whatever it is that we are.


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RE: [zope] sudden ZClass breakage

[James Sintz]

Only seen a couple of posts on this and the suggested fixes did NOT work.

My ZClass was working fine until I added a new string type property and now
my date type property seems broken. At least broken when I attempt creating
an instance via my custom add form. If I add an instance via the management
screen it works fine. I have gone as far as scrapping my custom form and
rebuilding it. I can't see any reason why I would be getting "Invalid
Date-Time String", especially when it was working fine. 

I'm happy post my code if that will help.

Any ideas??

Jamey

 -Original Message-
 From: Timothy Wilson [SMTP:[EMAIL PROTECTED]]
 Sent: Friday, November 10, 2000 4:46 PM
 To:   James Sintz
 Subject:  RE: [zope] sudden ZClass breakage
 
 On Fri, 10 Nov 2000, James Sintz wrote:
 
  Did you ever figure out how to fix your ZClass problem? I have a
 application
  I have been working on and and all of a sudden today I start getting the
   same error message "Invalid Date-Time String" . The odd thing is
that it is 
   only broken when I try and
  add an instance from my custom add form. When I use the management
 screen to
  add the instance my goLiveDate field works just fine.
 
 I've never gotten an answer. I figured I would work on other things and
 wait
 for 2.2.3 and see if that made any difference. If it doesn't, I'll make
 some
 more noise or dig in deeper and try to figure out what's going on. :-(
 
 -Tim
 
 Hi everyone, I've been working away on a ZClass-based 
 product that will provide a searchable job board for 
 our Human Resources Dept. here at school. Things were 
 going along fine until, it seemed, out of the blue I 
 started getting an error message about an "Invalid 
 Date-Time String" and a lengthy traceback. I'm wondering 
 if anyone can glean anything from the traceback. Is 
 this one of those obvious errors that I'm just 
 missing? I'm really puzzled. Any advice would be 
 appreciated. 

 -Tim 

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Re: [Zope] bookmark importer

[zope]

"Philipp Dunkel" [EMAIL PROTECTED] writes:

 Hello guys I' have here a pyton file that allows you to import your
 bookmarks from IE.
 The following prob is that it works on windows98 zope 2.2.2  and not on a
 unix system.
 The file temp.txt stays empty and you get the message 'unable to export
 favourites'
 
 anyone any idea?

Have you account for differing end-of-line conventions on the 2 platforms?

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Re: [Zope] ZClasses inheriting property(sheets) : yes/no?

[Aaron Straup Cope]

Thanks!

I have a new question that may (?) be the same old one in a different
form:

The idea is to have two ZClasses, say Foo and Bar. Bar is a nested class 
of Foo. The Foo object should be able create n instances of the Bar
objects and the Bar object should also be able to create n instances of
other Bar objects.

Creating Bar in Foo is no problem.
Creating Bar in Bar is a problem since Zope won't display the interface
for adding objects. Adding new Bars is selected in the permissions
menu/tab for both ZClasses.

Foo inherits ZClass:ObjectManager and Bar is a "child" of Foo. I've tried
grovelling around the mailing-lists and seen discussions about inheriting
OFS:Folder and/or issues of folderish-ness.

I tried making Bar inherit OFS:Folder, but then I just got a popup menu
that lets me create Foo, but not Bar.

I'm confused and starting to feel like a bit of a dumb-ass. Can someone
point me in the right direction? Thanks,


On Fri, 10 Nov 2000, Jim Washington wrote:

 Hi, Aaron
 
 Yes.
 
 If your parent ZClass is constructed properly, you should be able to add
 the parent class's management tabs by setting a "view". On the "Views"
 tab, look in the Method list for
 propertysheets/[ParentClassPropertySheetName]/manage.  The properties on
 that sheet are accessible just like any of the child class's properties.
 
 -- Jim Washington



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Re: [Zope] why DTML confusing

[Simon Michael]

Charlie Wilkinson [EMAIL PROTECTED] writes:
 ...or "the python world with some Zope limitations placed on it."
...
 There's a third world of course, HTML.  Most of us probably have that

True, true. Actually this sounds like a good structure for a overview
doc:

"Welcome to Zope.. in which we shall encounter

1. the plain of Text
2. the fields of HTML
3. the DTML domain
4. the ZClass lands
5. the Scripting realms; in which dwell Expressions, Methods and
Python/Perl/XSLT"
6. the unbound Scripting realms; here be External Methods
7. the halls of the Serpent; where dwell it's Products

Descend now into.. DC's Seven Circles Of Hell." 
(affectionately misnamed :-) 

-Simon

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[Zope] Are there any man pages out there for these functions?

[jvoth]

Howdy Folks,

I'm looking for man pages on these dtml functions?

I'm finding it terribly difficult and frustration to figure out how to
properly program in dtml since I can't do a man on a funtion 
(ie:man objectValues) and read about what parameters the function is 
expection from me.

I'd like to browse the dtml man pages and see what functions are 
available to me. I've been reading all kinds of documents for the last
week but I get the feeling that Zope is somewhat immature as a product.

So, any ideas about those man pages?

Thanks in advance.
John

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| [EMAIL PROTECTED] 403-291-2770, 403-259-6795 (fax)|
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Re: [Zope] Are there any man pages out there for these functions?

[Michel Pelletier]

[EMAIL PROTECTED] wrote:
 
 Howdy Folks,
 
 I'm looking for man pages on these dtml functions?
 
 I'm finding it terribly difficult and frustration to figure out how to
 properly program in dtml since I can't do a man on a funtion
 (ie:man objectValues) and read about what parameters the function is
 expection from me.
 
 I'd like to browse the dtml man pages and see what functions are
 available to me. I've been reading all kinds of documents for the last
 week but I get the feeling that Zope is somewhat immature as a product.
 
 So, any ideas about those man pages?

Yes, in Zope, click the 'Help' button.  On the left is a navigation
tree, open 'Zope Help' and then open 'API Documentation'.  For
documentation on 'objectValues' for example, look at the 'ObjectManager'
API screen.  It's not very discoverable; we need to work on making a
better help interface.

-Michel

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Re: [Zope] Are there any man pages out there for these functions?

[Phil Harris]

John,

Have you tried http://zdp.zope.org , in particular the Zope Quick Reference.

Every Zope user/developer should use it as their bible.

hth

Phil
[EMAIL PROTECTED]

- Original Message -
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Saturday, November 11, 2000 12:11 AM
Subject: [Zope] Are there any man pages out there for these functions?


|
| Howdy Folks,
|
| I'm looking for man pages on these dtml functions?
|
| I'm finding it terribly difficult and frustration to figure out how to
| properly program in dtml since I can't do a man on a funtion
| (ie:man objectValues) and read about what parameters the function is
| expection from me.
|
| I'd like to browse the dtml man pages and see what functions are
| available to me. I've been reading all kinds of documents for the last
| week but I get the feeling that Zope is somewhat immature as a product.
|
| So, any ideas about those man pages?
|
| Thanks in advance.
| John
|
| /\
| | John Voth   Mobiltex Data Ltd.Calgary, Alberta,Canada, T1Y-4T7 |
| | [EMAIL PROTECTED] 403-291-2770, 403-259-6795 (fax)|
| \/
|
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Re: [Zope] logging for virtual hosts

[zope]

Well, I tried the source hacking approach and seem to have found
success with relatively little pain.

In ZServer/medusa/http_server.py, the "log" method of the class
"http_request" can be modified to report the request hostname which
is readily available via the get_header method in the same class. Here
is my modified "log" method:


def log (self, bytes):
user_agent=self.get_header('user-agent')
if not user_agent: user_agent=''
referer=self.get_header('referer')
host=self.get_header('host')
if not referer: referer=''  
self.channel.server.logger.log (
self.channel.addr[0],
' - - [%s] "%s" %d %d "%s" "%s" %s\n' % (
self.log_date_string (time.time()),
self.request,
self.reply_code,
bytes,
referer,
user_agent,
host
)
)

Note that this puts the request hostname at the end of the log
entry.

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