[Zope-dev] url traversal

2001-04-26 Thread Brett Carter

I have the classic problem of wanting my method 'foo' to work like:
http://localhost/foo/a/b/c
where a,b,c are parameters passed to foo.  I've found some info in the
mailing list archives, namely:
http://lists.zope.org/pipermail/zope-dev/2000-May/005197.html

Has the 'Traversal' interface been implemented?  What are the
specifics of implementing something like I describe above?
Thanks,
-Brett

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[Zope-dev] Publishable Objects...

2001-04-26 Thread Brett Carter

What does it take to make an object publishable from an
ExternalMethod?
I.E., I have a class (see bottom of message) that does some url
traversal trickery, that works from a python product.  Shouldn't I be
able to just stick it in an External method, and just return it, i.e.:

def returnme(self):
return MyClass()


and it get's published as normal?  The problem is, __bobo_traverse__
never gets called on MyClass when it's in the external method.  It
works fine from a python product though.
-Brett



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[Zope-dev] dtml-in performance

2001-04-04 Thread Brett Carter

What can I do to maximize the peformance of a dtml-in statement?  
When iterating over a 2000 row database query, it takes about 20
seconds - time mostly spent doing security checks, and calling
__getitem__ in DT_InSV.py.  Is the performance of dtml-in just slow?
-Brett

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Re: [Zope-dev] dtml-in: next-batches

2001-03-07 Thread Brett Carter

I tried accessing keys off the 'data' object, and I just get an
'unathorized' error.
-Brett

 "Dieter" == Dieter Maurer [EMAIL PROTECTED] writes:

    Dieter Brett Carter writes:
 I'm running Zope 2.2.2, and I'm trying to use the batching stuff for
 the dtml-in tag, however, I can't seem to access any attributes off
 the 'next-batches' or 'previous-batches' mapping object that's
 supposed to be available, with the attributes 'batch-start-index',
 'batch-end-index', and 'batch-size'.
 
 I wrote an external method to dir the 'next-batches' object, and it
 seems the only attributes available are:
 ['data', 'items', 'query_string', 'start_name_re']
Dieter The attributes your are looking for are in fact keys
Dieter of the mapping 'data'.


Dieter Dieter

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[Zope-dev] dtml-in: next-batches

2001-03-07 Thread Brett Carter

Does anybody have an example of how to use the supposed next-batches
mapping returned by dtml-in?
I'm trying to build a google-like pageing feature into my application,
so we just show the first 5 results, then have a link to each next
page, ie "1,2,3,4..."
Thanks,
-Brett

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Re: [Zope-dev] dtml-in: next-batches

2001-03-02 Thread Brett Carter

I've also discovered that setting overlap = 0 actually causes
everything to overlap by 1.   I didn't see anything in the collector
about this either...
-Brett


 "Brett" == Brett Carter [EMAIL PROTECTED] writes:

Brett I'm running Zope 2.2.2, and I'm trying to use the batching stuff for
Brett the dtml-in tag, however, I can't seem to access any attributes off
Brett the 'next-batches' or 'previous-batches' mapping object that's
Brett supposed to be available, with the attributes 'batch-start-index',
Brett 'batch-end-index', and 'batch-size'.  However, my example code (see
Brett below) blows up with a key error when trying to access any of these.
Brett Is this a bug, or am I just misunderstanding how to use this thing?

Brett I wrote an external method to dir the 'next-batches' object, and it
Brett seems the only attributes available are:
Brett ['data', 'items', 'query_string', 'start_name_re']
Brett -Brett

Brett  p
Brett dtml-in "mystuff.retseq()" size=5 start=start
Brett  dtml-var sequence-item
Brett /dtml-in /p
Brett p

Brett dtml-in "mystuff.retseq()" size=5 start=start previous
Brett  a href="dtml-var absolute_url/batch_me?start=dtml-var 
previous-sequence-start-index"Previous/a
Brett /dtml-in

Brett dtml-in "mystuff.retseq()" size=5 start=start next overlap=-1
Brett   dtml-try
Brett dtml-in next-batches
Brett   dtml-var batch-start-indexbr
Brett /dtml-in
Brett   dtml-except
Brettpre
Brettdtml-var error_typebr
Brettdtml-var error_valuebr
Brettdtml-var error_tbbr
Brett/pre
Brett   /dtml-try
   
Brett  a href="dtml-var absolute_url/batch_me?start=dtml-var 
next-sequence-start-index"Next/a
Brett /dtml-in

Brett /p

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[Zope-dev] dtml-in: next-batches

2001-03-01 Thread Brett Carter

I'm running Zope 2.2.2, and I'm trying to use the batching stuff for
the dtml-in tag, however, I can't seem to access any attributes off
the 'next-batches' or 'previous-batches' mapping object that's
supposed to be available, with the attributes 'batch-start-index',
'batch-end-index', and 'batch-size'.  However, my example code (see
below) blows up with a key error when trying to access any of these.
Is this a bug, or am I just misunderstanding how to use this thing?

I wrote an external method to dir the 'next-batches' object, and it
seems the only attributes available are:
['data', 'items', 'query_string', 'start_name_re']
-Brett

 p
dtml-in "mystuff.retseq()" size=5 start=start
 dtml-var sequence-item
/dtml-in /p
p

dtml-in "mystuff.retseq()" size=5 start=start previous
 a href="dtml-var absolute_url/batch_me?start=dtml-var 
previous-sequence-start-index"Previous/a
/dtml-in

dtml-in "mystuff.retseq()" size=5 start=start next overlap=-1
  dtml-try
dtml-in next-batches
  dtml-var batch-start-indexbr
/dtml-in
  dtml-except
   pre
   dtml-var error_typebr
   dtml-var error_valuebr
   dtml-var error_tbbr
   /pre
  /dtml-try
   
 a href="dtml-var absolute_url/batch_me?start=dtml-var 
next-sequence-start-index"Next/a
/dtml-in

/p

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Re: [Zope-dev] What's 'section' in blocks[0] in block dtml tag?

2001-01-02 Thread Brett Carter

Lee, I've been diddling around with the same stuff.  It took me a lot
of introspection with printing of errors via MrCreosote/Spew.  To
answer your question, 'section' is an object which contains an
attribute 'blocks'.  If you want to render the dtml in there, you can
run the 'render_blocks' method in
'zope-instance/lib/Python/pDocumentTemplate.py' You pass it the
section.blocks object and a mapping dictionary which is the current
namespace stack that gets passed in as the only argument to the
'render' method in you tag definition.  If you just want the raw text,
check you the render_blocks method, so you can see how they take apart
the 'section.blocks' object.  As to the object hiarchy of everything,
your guess is as good as mine as to why there's a list of tuples of
blocks wrapped in a section object, wrapped in another blocks object,
I have know idea.  Perhaps the designer of the document templates
could answer...  
-Brett


 "LEE" == LEE Kwan Soo [EMAIL PROTECTED] writes:

LEE Hi. I'm playing/struggling to make a custom block dtml tag.
LEE Let me call it, dtml-quote tag.
LEE dtml-quote tag is similar to dtml-comment tag except it will emit
LEE html_quoted, not rendered version of what lies 
LEE between dtml-quote ... /dtml-quote.
LEE (I feel it will be usefull when I show  write some dtml examples on my
LEE korean zope site).

LEE After seeing around some python sources,
LEE I finally got that tname is the name of the tag, args is args, and section
LEE is something, in the following code.

LEE def __init__(self, blocks):
LEE tname, args, section = blocks[0]

LEE and section seems to have 6 attributes/methods:
LEE '__name__', '_v_blocks', '_v_cooked', '_vars', 'blocks', 'globals', 'raw'

LEE But that mistic raw is null string, '' and blocks is no help for me.

LEE How can I retrieve the raw source string enclosed in a block tag pair?

LEE LEE Kwan Soo.

LEE ps. My English is evem more cryptic this morning. Sorry I've sat up alnight 
play 
LEE Kingdom Under Fire.

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Re: [Zope-dev] objectValues performance

2000-11-28 Thread Brett Carter


Ok, I'll bite.  Why doesn't the standard folder scale?  Seems like a
design flaw to me - why doesn't the default folder use catalogs or BTrees?
-Brett

 "Casey" == Casey Duncan [EMAIL PROTECTED] writes:

Casey Brett Carter wrote:
 I have a folder with greater than 5000 ZClass instances in it.  It
 takes  5mins to do an objectValues for every object in the folder -
 is there a higher perfomance call I could make?
 -Brett

Casey Standard folder performance degrades pretty quickly once you get
Casey a lot of objects in it. There are two solutions to this:

Casey Subdivide your objects into multiple folders.
Casey Use a BTreeFolder which should be much faster.

Casey You can download the BTreeFolder product
Casey here: http://www.zope.org/Members/hathawsh/BTreeFolder/

Casey hth,
Casey Casey Duncan






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Re: [Zope-dev] objectValues performance

2000-11-28 Thread Brett Carter


 "Michel" == Michel Pelletier [EMAIL PROTECTED] writes:

Michel Because massive scale is not a requirment of folders, they
Michel are meant to organize content for humans, not to be
Michel large-collection containers.  A folder with 5000 elements
Michel is not very useful to a human.

Michel On a similar note, create 5000 files in a linux directory on a ext2
Michel (standard) filesystem and then type 'ls'.  You'll notice they don't
Michel scale very well either, which is why there are filesystems like
Michel ReiserFS.

Michel -Michel

Point taken, but in Zope where data and logic reside in the same place
(ZODB) shouldn't we have some sort of effcient storage for large amounts
of data?  What happens when a site gets three or four thousand users?
That won't fit well in an UserFolder.  
-Brett

[...]


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[Zope-dev] ZCatalog uniqueValuesFor() cached?

2000-10-03 Thread Brett Carter

How can I update the uniqueValuesFor()?  Whenever I delete one of my
ZCatalog-aware zclasses, they are still returned in uniqueValuesFor.
What gives?  is this cached or something?
-Brett

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Re: [Zope-dev] Custom dtml tag

2000-09-13 Thread Brett Carter

Andy - looking up 'this' in a dtml method or document won't work
unless you expose it in your python product/tag definition.  I'm
talking about getting 'this' inside a dtml tag that I have defined
myself (i.e. dtml-foobar/dtml-foobar).  If you want 'this'
available in dtml, write an external method and just return 'self'
def this(self): return self
-Brett

 "Andy" == Andy McKay [EMAIL PROTECTED] writes:

Andy Really? Ive looked up this and get nothing (an attribute error actually) and
Andy its not in globals. If that would work that would be great - but a it
Andy certainly doesnt seem to on a standard DTMLDocument / Method.

Andy - Original Message -
Andy From: "Brett Carter" [EMAIL PROTECTED]
Andy To: "Andy McKay" [EMAIL PROTECTED]
Andy Cc: [EMAIL PROTECTED]
Andy Sent: Tuesday, September 12, 2000 4:17 PM
Andy Subject: Re: [Zope-dev] Custom dtml tag


 Andy: here's what I've gleaned - in a dtml tag's render() method, you
 get passed in self and a template dict, in my example let's call it
 'md'.  md is essentially a stack/dictionaryish object of the *current*
 namespace - and one of the handy things that's always around in the
 namespace is the 'this' function, which returns the object on the top
 of the stack.
 
 Just lookup 'this', run it, and there you have a reference to the
 calling object!  Ex:
 
 def render(self, md)
 this = md.getitem('this')
 callingObj = this()
 return "Calling object was %s" % (callingObj.id())
 
 Note I haven't tested this code.  Good luck!
 -Brett
 

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Re: [Zope-dev] Custom dtml tag

2000-09-12 Thread Brett Carter

 "Andy" == Andy McKay [EMAIL PROTECTED] writes:
Andy - see the thread I started called 'Acqusition in a DTML tag'
I have a similar question.
-Brett

Andy Hmm well ive found i have TemplateDict object and of
Andy course my self.  Perhaps there is a pythonism I have to
Andy research here.

Andy - Original Message - From: "Andy McKay"
Andy [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent:
Andy Monday, September 11, 2000 4:03 PM Subject: [Zope-dev]
Andy Custom dtml tag


 Im playing with a custom dtml-tag along the lines of dtm-query
 foo constructs a url to a catalog query. It works fine, I
 would just like to extend it a bit and for this I would need to
 get to the calling object.
 
 For example, there will be a different query depending upon the
 object the dtml-query tag is contained in. Does this make
 sense, does anyone know the answer?
 
 Thanks in advance.
 
 -- Andy McKay, Developer.  ActiveState.
 
 
 
 
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Re: [Zope-dev] Acquisition in a DTML Tag

2000-09-12 Thread Brett Carter

 "Shane" == Shane Hathaway [EMAIL PROTECTED] writes:

Shane Brett Carter wrote:
   "Brett" == Brett Carter [EMAIL PROTECTED] writes:
 
Brett I've defined my own dtml tag (i.e. dtml-foo/dtml-foo)
Brett and I am trying to look up an object depending on the
Brett arguments passed to my tag.  The python class that defines
Brett the tag inherits from Acquisition.Implicit, but 'self'
Brett doesn't contain any of the Acquisition hiarchy.  It seems
Brett like this must be possible, since the dtml-var tag must
Brett have to do an object lookup somewhere for objects passed to
Brett it to render.  Can anybody shed some light on this?  Is it
Brett doable?  TIA -Brett
  Ok, So after some *major* hacking, i've realized that the 'md'
 passed into the render() method of my dtml tag contains the
 namespace, and is of type 'TemplateDict' which appears to
 contain a stack of 'MultiMapping's.  Weird.  Well, anyways, I
 just used the 'has_key' and 'getitem' methods to lookup my
 item.  The question now is how do I create a new object in the
 current namespace?  It looks like the TemplateDict is a
 read-only type of data structure.  Anybody?  TIA -Brett

Shane Look at render() of DT_With.py.  It does an
Shane md._push(mapping containing new names) then, in a
Shane try/finally clause, calls DT_Util.render_blocks().  In the
Shane finally clause, it does md._pop().

Shane Shane

I'm still confused.  Ok, so render gets passed 'md', which is a
TemplateDict, which contains a MultiMapping, which looks like a stack
of dictionaries, which I am guessing is some sort of namespace stack.
So looking at the DT_with.py, it looks like, to create an object in
the current namespace, I have to wrap it in an InstanceDict, and push
it onto the 'md' using 'md._push'.  Does this also cause the new
object to be saved in the ZODB?  Or do I have to manually add it there
too?  Also, what does render_blocks do?  Why does DT_with.py's
render() return it?  Do I have to run render_blocks() to insert my new
object into the namespace?  TIA
-Brett

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Re: [Zope-dev] Custom dtml tag

2000-09-12 Thread Brett Carter

Andy: here's what I've gleaned - in a dtml tag's render() method, you
get passed in self and a template dict, in my example let's call it
'md'.  md is essentially a stack/dictionaryish object of the *current*
namespace - and one of the handy things that's always around in the
namespace is the 'this' function, which returns the object on the top
of the stack.

Just lookup 'this', run it, and there you have a reference to the
calling object!  Ex:

def render(self, md)
  this = md.getitem('this')
  callingObj = this()
  return "Calling object was %s" % (callingObj.id())

Note I haven't tested this code.  Good luck!
-Brett

 "Andy" == Andy McKay [EMAIL PROTECTED] writes:

Andy I can see how this would be useful in a situation where I dont have an
Andy instance of self. But in this case I do, so Im not sure how this helps.

Andy I guess you're saying once I have self I can find out what called the
Andy function. More fiddling I guess.

Andy - Original Message -
Andy From: "Martijn Pieters" [EMAIL PROTECTED]
Andy To: "Andy McKay" [EMAIL PROTECTED]
Andy Cc: [EMAIL PROTECTED]
Andy Sent: Tuesday, September 12, 2000 11:29 AM
Andy Subject: Re: [Zope-dev] Custom dtml tag


 On Tue, Sep 12, 2000 at 09:26:49AM -0700, Andy McKay wrote:
  Hmm well ive found i have TemplateDict object and of course my self.
  Perhaps there is a pythonism I have to research here.
 
  - Original Message -
  From: "Andy McKay" [EMAIL PROTECTED]
  To: [EMAIL PROTECTED]
  Sent: Monday, September 11, 2000 4:03 PM
  Subject: [Zope-dev] Custom dtml tag
 
 
   Im playing with a custom dtml-tag along the lines of dtm-query foo
   constructs a url to a catalog query. It works fine, I would just like
Andy to
   extend it a bit and for this I would need to get to the calling
Andy object.
  
   For example, there will be a different query depending upon the object
Andy the
   dtml-query tag is contained in. Does this make sense, does anyone know
Andy the
   answer?
  
   Thanks in advance.
  
   --
 Andy McKay, Developer.
 ActiveState.
 
 The namespace just reflects the attributes of the current object, plus
 whatever other tags push onto that stack (such as the in tag, which pushes
 the current element of the list it iterates over on top).
 
 If you retrieve the 'this' method from the stack, and call it, it'll
 return the topmost object on the stack. It is implemented in
 SimpleItem.Item:
 
 def this(self):
 # Handy way to talk to ourselves in document templates.
 return self
 
 --
 Martijn Pieters
 | Software Engineermailto:[EMAIL PROTECTED]
 | Digital Creations  http://www.digicool.com/
 | Creators of Zope   http://www.zope.org/
 | ZopeStudio: http://www.zope.org/Products/ZopeStudio
 -
 


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Re: [Zope-dev] Acquisition in a DTML Tag

2000-09-06 Thread Brett Carter

 "Brett" == Brett Carter [EMAIL PROTECTED] writes:

Brett I've defined my own dtml tag (i.e. dtml-foo/dtml-foo)
Brett and I am trying to look up an object depending on the
Brett arguments passed to my tag.  The python class that defines
Brett the tag inherits from Acquisition.Implicit, but 'self'
Brett doesn't contain any of the Acquisition hiarchy.  It seems
Brett like this must be possible, since the dtml-var tag must
Brett have to do an object lookup somewhere for objects passed to
Brett it to render.  Can anybody shed some light on this?  Is it
Brett doable?  TIA -Brett

Ok, So after some *major* hacking, i've realized that the 'md' passed
into the render() method of my dtml tag contains the namespace, and is
of type 'TemplateDict' which appears to contain a stack of
'MultiMapping's.  Weird.  Well, anyways, I just used the 'has_key' and
'getitem' methods to lookup my item.  The question now is how do I
create a new object in the current namespace?  It looks like the
TemplateDict is a read-only type of data structure.  Anybody?  TIA
-Brett


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