Re: use tween to centralize redirection or something else

[Jerry]

I am already using Pyramid auth, but to bend it for the new feature I'd 
have to edit _every_ add_view(), which will make it an even worse hack than 
my current tween hack, where I need to manually recreate the attributes 
used in the template, notably the missing matched_route --

def signup_hack_tween_factory(handler, registry):
def signup_hack_tween(request):
if request.user and not request.user.user_name and request.method 
== 'POST':
request.c['h'] = helpers
request.matched_route = Mock()
settings = registry.settings
request.RedisCache = settings['RedisCache']
return render_to_response('templates/signup_hack.genshi', 
request.c, request)
else:
try:
response = handler(request)
finally:
return response

return signup_hack_tween


Jerry

On Monday, April 8, 2013 11:18:32 PM UTC+8, Jonathan Vanasco wrote:

 are you using Pyramid's auth already ? 


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add_route() question

[jerry]

Is there a clean way to pass information to Pyramid app from
add_route()?

For SEO reasons, I want multiple routes to point to the same view.
i.e., --

add_route('christmas', '/christmas')
add_view('views.christmas_view', route_name='christmas')

add_route('christmas-gifts', '/christmas-gifts')
add_view('views.christmas_view', route_name='christmas-gifts')

add_route('christmas-gift-ideas', '/christmas-gift-ideas')
add_view('views.christmas_view', route_name='christmas-gift-ideas')

now in my christmas_view or christmas_template, I need to set the
header keywords according to the route match. Instead of checking
matched_route.name, which can quickly lose sync as the routes
structure changes, is there a cleaner way to achieve this?

Thanks.

Jerry

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Re: Minimatic for Pyramid?

[jerry]

From a quick skim of the documentation, webassets doesn't seem to be
as flexible or versatile as Fanstatic: Resource publishing for
Pythonistas [ http://www.fanstatic.org/en/latest/index.html ].

Any thoughts?

Jerry

On Jun 12, 2:34 pm, John Anderson son...@gmail.com wrote:
 On Tue, Jun 12, 2012 at 1:31 AM, Mark Huang zhengha...@gmail.com wrote:
  Hi Pyramid experts,

  I am about to launch a web application soon and I realized I had some
  problems with js and css assets (minimizing and which one to use for
  production and development).  I used to use Minimatic when I was developing
  using Pylons.  I came to learn that Webhelpers is not supported in Pyramid
  and hence, Minimatic, being an extension of webhelpers, doesn't seem to
  work on Pyramid.

  What do you guys use for this sort of job.  The key feature I need is for
  Pyramid to switch resources when I switch from development to production
  and vice versa.

  Regards,
  Mark Huang

 I usehttp://webassets.readthedocs.org/en/latest/index.html  
 withhttps://github.com/sontek/pyramid_webassets

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Re: Need help on caching, background jobs manual ORM cache refresh (Pyramid project)

[jerry]

If you like beaker, you might also want to take a look at retools
( http://pypi.python.org/pypi/retools/0.2 ), a newer caching library
specifically for Redis from the same author.

Jerry

On Jun 6, 3:36 am, Learner hello.bku...@gmail.com wrote:
 Thanks Jason. I will take your suggestion.
 But your hint about beaker caching is helpful.

 cheers
 -Bkumar

 On Jun 5, 4:22 pm, Jason ja...@deadtreepages.com wrote:







  On Tuesday, June 5, 2012 7:49:10 AM UTC-4, Learner wrote:

   Hello Pyramid gurus,

   I have been searching for quick tutorials on caching, background jobs
ORM related topics. I found quite a few resources which seem to be
   very informative. Since I am new to both Python  Pyramid, I thought I
   will seek experienced people opinion, before I go ahead and use
   anything I found on web. Any help is very much appreciated.

   1. Caching:
       The simple use case is:- I want to show top 10 or 20 articles on
   my wiki application. Before I render the data I would like to cache
   the db result upon first query execution and cache it. Cache to
   refresh automatically after every 1 hour or so.
   As far as caching is concerned you will be better off caching the result

  of your view. Beaker cache has decorators for caching individual
  functions/methods for a specified period of time (look for cache_region
  decorator) this way not only will the database results be cached, but also
  the processing required to turn them into the template values. I don't know
  if there is a way to also cache the rendered template with Pyramid.

   2. Background Jobs: I am using SQLAlchemy in my application. All the data
   needed for the application comes from XML/CSV files. Is there any way in
   Pyramid I can create a background job and schedule it to run every 30
   minutes or so?. Job will look at one particular folder everytime it is 
   run,
   and if there are any xml/csv files job will pick it up and process them.
   Since this is simple ETL job, SQLAlchemy is not aware of the DB changes. 
   So
   does this confuse any of the ORM caching mechanism and show the dirty 
   data?
   If so, how would I be able to notify ORM to rebuild its caching? Thanks 
   for
   your time.

  Are the XML files parsed and then the data is inserted into a database that
  Pyramid uses? Perhaps a cron job would be better suited to that?  If you
  are using caching then the data will not be refreshed in Pyramid until the
  cache refreshes. If you are using beaker you can force the cache to refresh
  on the next hit.

  Are you sure you need all this caching though? It seems unnecessarily
  complicated. Pyramid is very fast, SQLAlchemy is very fast, your database
  will probably be caching the query plans as well so it's going to be very
  fast. I would recommend building your application with no caching, and then
  adding it later if it is needed. That way you can worry about getting the
  loaded data displaying correctly (especially since you're data setup is a
  little more complex) before having to figure out a caching system.

  -- Jason

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Re: Mobile version of site with Pyramid

[jerry]

Check out a new adaptive CSS/JS Foundation framework ( 
http://foundation.zurb.com/
), with that you can have one-template-fit-all and impress your client
if they have not seen web page that automatically changes layout
according to screen size :)

Jerry

On Apr 17, 9:38 am, Theron Luhn the...@luhn.com wrote:
 Hello.

 My client thinks its very important to have a mobile version of their
 website.  Do you guys have any recommendations on how to use different
 Chameleon templates for the mobile/desktop website?

 - Theron

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Anything similar to Django dogslow in Pyramid?

[jerry]

Just learnt the Django dogslow module ( http://pypi.python.org/pypi/dogslow
) from the Instagram architecture presentation. It's a middleware for
identifying slow process, is there anything similar in Pyramid?

Jerry

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Re: Using pdb.set_trace() in Chameleon

[jerry]

Uber! This should be the final call to translate my 10K Genshi
templates to Chameleon.

Are there any auto migration tool out there?

Jerry

On Feb 29, 4:32 pm, Malthe Borch mbo...@gmail.com wrote:
 Just wanted to note that as of 2.8.0 (just released), you can now
 embed Python code blocks in templates.

 This makes it easy to enter the debugger from inside a template:

   ?python import pdb; pdb.set_trace() ?
   div tal:condition=...
      ...
   /div

 It works best if you're running in debug-mode since then the generated
 source code is written out to disk, letting the debugger actually
 see the code.

 If you're an emacs user, consider binding this to M-p:

   (fset 'pdb-pi-set ?python import pdb; pdb.set_trace() ?)
   (global-set-key \M-p 'pdb-pi-set)

 This extends on the common binding M-t:

   (fset 'pdb-set import pdb; pdb.set_trace())
   (global-set-key \M-t 'pdb-set)

 Naturally, code blocks can be used for more than just debugging. I'm
 not sure it's particularly useful. It allows you to write out a
 Fibonacci-generator right from inside your templates – should you ever
 need that.

 Enjoy,

 \malthe

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How To Prepare For get_current_registry() Manually

[jerry]

I am trying to use of SQLAlchemy event outside of web app.

SQLAlchemy event functions are in their own module --

from sqlalchemy import event
from pyramid.threadlocal import get_current_registry

event.listen(model.User, 'after_update', after_update_listener)

def after_update_listener(mapper, connection, target):
settings = get_current_registry().settings
...

which works well in the web app. However, get_current_registry()
returns nothing in paster command or bootstrap scripts.

How can I prepare the config values for get_current_registry()
manually?

Any pointer will be much appreciated.

Jerry

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[Pyramid] Caching Response Object

[jerry]

Hi,

I wonder if anyone has succeeded in caching the template output. The
main hurdle I'm facing is how to serialize the entire Response object.
I have made a tween to cache the vanilla 200 response.text, but what
about redirect, forbidden, etc, I don't have a solution.

Any pointer will be much appreciated.

Jerry

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Re: Caching Response Object

[jerry]

Thanks Robert.

However, the cache needs to, at minimum, differentiate login users
from non-login users to serve different content, and only a Pyramid
app aware caching engine can do that.

Jerry

On Jan 31, 9:44 pm, Robert Forkel xrotw...@googlemail.com wrote:
 hi jerry,
 if you run your app via paster/gunicorn/whatever proxied by apache or
 nginx, it is trivial to insert varnish [1] as transparent cache
 between the frontend and the server serving your pyramid app.
 regards
 robert

 [1]https://www.varnish-cache.org/







 On Tue, Jan 31, 2012 at 9:16 AM, jerry jerryji1...@gmail.com wrote:
  Hi,

  I wonder if anyone has succeeded in caching the template output. The
  main hurdle I'm facing is how to serialize the entire Response object.
  I have made a tween to cache the vanilla 200 response.text, but what
  about redirect, forbidden, etc, I don't have a solution.

  Any pointer will be much appreciated.

  Jerry

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Re: Caching Response Object

[jerry]

Thanks Simon. Varnish is definitely worth exploring.

I'm also very interested in your second approach, how can you tell if
the user has JS enabled by looking at her request?

Jerry

On Jan 31, 11:45 pm, Simon Yarde simonya...@me.com wrote:
 I wonder if this solves your issue with Varnish, or if it is too coarse:

 https://www.varnish-cache.org/docs/trunk/tutorial/cookies.html

 It would seem as a minimum you could identify logged-in-users from 
 non-logged-in-users by a the presence of a specific auth-cookie. This would 
 certainly accelerate pages for non-logged in users.

 I am currently working on pulling basic user info into cached pages via 
 javascript; this covers most 'cart contents' and 'hello Jane Smith' type 
 feedback scenarios. The graceful fallback is to send the user to a specific 
 cart or account page if they don't have js active.

 On 31 Jan 2012, at 15:25, jerry wrote:







  Thanks Robert.

  However, the cache needs to, at minimum, differentiate login users
  from non-login users to serve different content, and only a Pyramid
  app aware caching engine can do that.

  Jerry

  On Jan 31, 9:44 pm, Robert Forkel xrotw...@googlemail.com wrote:
  hi jerry,
  if you run your app via paster/gunicorn/whatever proxied by apache or
  nginx, it is trivial to insert varnish [1] as transparent cache
  between the frontend and the server serving your pyramid app.
  regards
  robert

  [1]https://www.varnish-cache.org/

  On Tue, Jan 31, 2012 at 9:16 AM, jerry jerryji1...@gmail.com wrote:
  Hi,

  I wonder if anyone has succeeded in caching the template output. The
  main hurdle I'm facing is how to serialize the entire Response object.
  I have made a tween to cache the vanilla 200 response.text, but what
  about redirect, forbidden, etc, I don't have a solution.

  Any pointer will be much appreciated.

  Jerry

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Pyramid Debug Routematch Not Working

[jerry]

I am using Pyramid 1.2.4, with debug_routematch enabled in the
configuration --

$ head prod_test.ini
[app:myapp]
use = egg:myapp
debug_authorization = false
debug_notfound = false
debug_routematch = true
debug_templates = true
default_locale_name = en

[pipeline:main]
pipeline =
egg:WebError#evalerror
egg:repoze.tm2#tm
myapp

As well as on the command line --

$ PYRAMID_DEBUG_ROUTEMATCH=true paster serve --reload prod_test.ini

But I still don't get any route debug message on the console.

What could be wrong?

Thanks.

Jerry

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Pyramid Route Bug?

[jerry]

I noticed that Pyramid (1.2.4) url dispatch route does not work with
%2F

So the below route --

config.add_route('date', '/date/{date})

does not match --

/date/2012%2F1%2F5

Is it a bug?

Thanks.

Jerry

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Re: Pyramid Debug Routematch Not Working

[jerry]

Thanks Michael.

But after setting the loggers in prod_test.ini --

[loggers]
keys = root, myapp

...

[logger_root]
level = DEBUG
handlers = console

[logger_myapp]
level = DEBUG
handlers =
qualname = myapp

I'm starting to see all the ThreadPool work messages, but still
nothing from route match.

Any further pointer?

Jerry

On Jan 5, 4:33 pm, Michael Merickel mmeri...@gmail.com wrote:
 You probably do not have the DEBUG level enabled for the pyramid package.
 Make sure you have something along the lines of the default logging setup
 in your ini.

 http://docs.pylonsproject.org/projects/pyramid/en/1.2-branch/narr/log...







 On Thu, Jan 5, 2012 at 2:13 AM, jerry jerryji1...@gmail.com wrote:
  I am using Pyramid 1.2.4, with debug_routematch enabled in the
  configuration --

  $ head prod_test.ini
  [app:myapp]
  use = egg:myapp
  debug_authorization = false
  debug_notfound = false
  debug_routematch = true
  debug_templates = true
  default_locale_name = en

  [pipeline:main]
  pipeline =
     egg:WebError#evalerror
     egg:repoze.tm2#tm
     myapp

  As well as on the command line --

  $ PYRAMID_DEBUG_ROUTEMATCH=true paster serve --reload prod_test.ini

  But I still don't get any route debug message on the console.

  What could be wrong?

  Thanks.

  Jerry

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Re: Is there any case where chameleon is more preferred?

[jerry]

I tried to write full-up programs in XML/XSLT at work and fully agree
with you that XML is by design not suitable for such task.

However, templates are not, and should not be, full-up programs. The
awkward XML programing can actually remind the author to limit the
logic in the template.

Besides, when both the number and complexity of your templates grow,
it'll be appreciated more and more that your final HTML will be well-
formed (and free from XSS attack) so long as each individual template
is validated. This is kind of like unit testing to me.

Last but not the least, XML templates are more designer friendly than
their non-XML counterparts.

That's why I'm still with Genshi while waiting for Chameleon to be
ready for prime time.

Just another perspective.

Jerry

On Dec 18, 5:34 am, John Rusnak jrusna...@gmail.com wrote:
 If you have ever tried full-up programming in XML or seen XML that tries to
 act like a full programming language this is what the Chameleon experience
 was like for me.  And for me, this is not a pleasant one. XML/HTML was not
 designed for programming logic, etc.  Mako allows a good and balanced way
 of mixing logic and HTML(formatted) text.

 Just one person's perspective.







 On Sat, Dec 17, 2011 at 11:14 AM, Mike Orr sluggos...@gmail.com wrote:
  On Sat, Dec 17, 2011 at 5:28 AM, Joshua Partogi
  joshua.part...@gmail.com wrote:
   Hi there,

   I am left undecided whether to use mako or chameleon. From what I have
   observed, it seems that chameleon is the default template language in
   pyramid (CMIIW). Is there any case where chameleon is more preferred
   when using pyramid? I actually like mako but I am afraid there are
   some mako functionality that is not supported in pyramid.

  The reason Chameleon seems first is that Pyramid's codebase is a
  direct descendant of BFG, which had Chameleon.  The Pylons-like parts
  were added later, and the tutorial authors happened to be Chameleon
  users. Mako was added to Pyramid with the intention that people would
  use it, and that they *should* use it if they're more comfortable with
  it.

  All of Mako is supported in Pyramid. Overall I'd say Mako has more
  features than Chameleon and is more flexible.  However, one advantage
  of Chameleon is that, because it's an XML-based language, the template
  is guaranteed to be well-formed if the rendering doesn't raise an
  exception. (That doesn't necessarily mean the output will be
  well-formed, if your variables contain unbalanced tags and you output
  them as literals rather than the default of escaping them.) Also, it
  looks Pyramid supports internationalization better with Chameleon
  (more documentation, more built-in support). That doesn't mean you
  can't do internationalization with Mako, it just means you'd have to
  do more of the structural work yourself. (Are there any tutorials on
  this?)

  One feature that may not be obvious if you're not using the Akhet
  scaffold, is that you can define Mako options in the INI file
  (mako.directories = line1  line2) or at the beginning of your main
  function (``settings[mako.directories] = [...]``).

  I also have used Mako a lot, and have been trying out Chameleon to see
  if I might want to use it. My impression is that Chameleon's syntax is
  very different, and it takes time to map your Mako idioms to Chameleon
  equivalents. So it's only worth doing if you have time to do it
  slowly, or if your first Chameleon application requires only simple
  templates.

  Longer term, Chris has been talking about removing both Chameleon and
  Mako from the Pyramid core, making them add-on packages
  (pyramid_chameleon and pyramid_mako). They would then be application
  dependencies like SQLAlchemy, rather than Pyramid core dependencies.

  --
  Mike Orr sluggos...@gmail.com

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Re: Events system

[jerry]

I would appreciate some confirmation/explanation on the Pyramid event
system -- is event/subscribe restricted to Pyramid running on one
physical server?

Thanks.

Jerry

On Dec 14, 7:13 am, John Anderson son...@gmail.com wrote:
 On Tue, Dec 13, 2011 at 5:10 PM, Vlad K. v...@haronmedia.com wrote:

  Hi all!

  In my Pyramid app I want to implement an event system, basically for
  plugins to hook to various events that raise in the life of the
  application. These events are each different, some allow one hook (by
  raising an exception if another hook tries to register for same event),
  some many, they handle various kinds of data, etc... My approach is the
  following:

  class SomeEvent(EventBase):
     Event raised in this or that condition, does X, requires Y, ...
     HANDLERS = []

     @classmethod
     Register(cls, callable):
         Decorator that registers a handler for this event.
         cls.HANDLERS.append(callable)
         return callable

     def __init__(self, request):
         self.request = request
         ...

     def dispatch(self):
         for h in self.HANDLERS:
             h(self)
         ...

  @events.SomeEvent.Register
  def some_handler(event):
     ...

  So basically we have a plugin with a handler some_handler, which we
  register for the particular event via its decorator. Now, I don't want to
  reinvent the wheel, and this approach seems rather straightforward,
  unit-testable and simple to implement, plus the events are then
  self-documenting. I was wondering if there is a better solution, or perhaps
  I can reuse some part of the Pyramid framework? ZCL?

  Also, can I reuse Venusian to scan the plugins package and thus do auto
  import of plugins at app startup time, instead of having the requirement
  to manually import each plugin so that the decorators would trigger and
  register the handlers (I really want the plug and play solution with
  dropping a module in the plugins package dir and calling it done)?

  Thanks.

 You can 
 use:http://docs.pylonsproject.org/projects/pyramid/en/latest/api/events.html

 this is how you would create custom 
 events:https://github.com/sontek/pyramid_signup/blob/master/pyramid_signup/e...

 this is how you would fire the 
 event:https://github.com/sontek/pyramid_signup/blob/master/pyramid_signup/v...

 and this is how you would subscribe to the 
 event:https://github.com/sontek/pyramid_signup/blob/master/pyramid_signup/t...

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Re: Events system

[jerry]

Thanks Michael and Chris.

From the framework design point of view, such event system is
invaluable. But for application development, I fail to see its added
value compared to simple function call. And it makes parsing variables
harder.

E.g., I'd naively design Michael's example as --

class MyEvent(object):
def __call__(self):
do_something(v1, v2, ...)

def do_something(*args, **kw):
# do stuff

e = MyEvent()
e()

Any enlightenment will be much appreciated.

Jerry

On Dec 14, 5:25 pm, Chris McDonough chr...@plope.com wrote:
 On Wed, 2011-12-14 at 01:11 -0800, jerry wrote:
  I would appreciate some confirmation/explanation on the Pyramid event
  system -- is event/subscribe restricted to Pyramid running on one
  physical server?

 Yes.

 - C









  Thanks.

  Jerry

  On Dec 14, 7:13 am, John Anderson son...@gmail.com wrote:
   On Tue, Dec 13, 2011 at 5:10 PM, Vlad K. v...@haronmedia.com wrote:

Hi all!

In my Pyramid app I want to implement an event system, basically for
plugins to hook to various events that raise in the life of the
application. These events are each different, some allow one hook (by
raising an exception if another hook tries to register for same event),
some many, they handle various kinds of data, etc... My approach is the
following:

class SomeEvent(EventBase):
   Event raised in this or that condition, does X, requires Y, ...
   HANDLERS = []

   @classmethod
   Register(cls, callable):
       Decorator that registers a handler for this event.
       cls.HANDLERS.append(callable)
       return callable

   def __init__(self, request):
       self.request = request
       ...

   def dispatch(self):
       for h in self.HANDLERS:
           h(self)
       ...

@events.SomeEvent.Register
def some_handler(event):
   ...

So basically we have a plugin with a handler some_handler, which we
register for the particular event via its decorator. Now, I don't want 
to
reinvent the wheel, and this approach seems rather straightforward,
unit-testable and simple to implement, plus the events are then
self-documenting. I was wondering if there is a better solution, or 
perhaps
I can reuse some part of the Pyramid framework? ZCL?

Also, can I reuse Venusian to scan the plugins package and thus do auto
import of plugins at app startup time, instead of having the 
requirement
to manually import each plugin so that the decorators would trigger and
register the handlers (I really want the plug and play solution with
dropping a module in the plugins package dir and calling it done)?

Thanks.

   You can 
   use:http://docs.pylonsproject.org/projects/pyramid/en/latest/api/events.html

   this is how you would create custom 
   events:https://github.com/sontek/pyramid_signup/blob/master/pyramid_signup/e...

   this is how you would fire the 
   event:https://github.com/sontek/pyramid_signup/blob/master/pyramid_signup/v...

   and this is how you would subscribe to the 
   event:https://github.com/sontek/pyramid_signup/blob/master/pyramid_signup/t...

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Re: Pyramid 1.3a1 released

[jerry]

Thanks bunch for the early Christmas gift :)

However, the doc -- New console scripts named pshell, pviews,
proutes, and ptweens do what their paster commandname equivalents
used to do. leaves out paster customized commands, which is also a
first-class member of the paster family.

Appreciate if we could get the assurance that it is in the road map.

Thanks again.

Jerry

On Dec 10, 4:15 am, Chris McDonough chr...@plope.com wrote:
 Pyramid 1.3a1 has been released.  This is the first major release in
 the 1.3 series.  Its primary features are:

 - Python 3.2 compatibility.

 - A new configuration introspection system.

 It requires Python 2.6, 2.7 or 3.2.  Python 2.5 is no longer
 supported.  Please use the Pyramid 1.2.X series if you need Python 2.5
 compatibility.

 The documentation for the release is available 
 athttp://docs.pylonsproject.org/projects/pyramid/en/1.3-branch/

 A detailed What's New in Pyramid 1.3 document is available 
 athttp://docs.pylonsproject.org/projects/pyramid/en/1.3-branch/whatsnew...

 You can install it via PyPI:

   easy_install Pyramid==1.3a1

 Many thanks to our GSOC students Joe Dallago and Joel Bohman, who
 helped us get Pyramid and its dependencies ready for Python 3.  Thanks
 also to the Python Software Foundation, who provided a grant to port
 WebOb to Python 3, and Sergey Schetenin, who helped prepare WebOb for
 Python 3 compatibility.

 Enjoy, and please report any issues you find to the issue tracker 
 athttps://github.com/Pylons/pyramid/issues

 Thanks!

 - C

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[Pyramid] Access Global Variable From Form(Encode)

[jerry]

Hi Experts,

What would be the best way to pass a global variable into my
form(encode) --

class MyModelSchema(Schema):
filter_extra_fields = True
allow_extra_fields = True
name = UniqueUsernameValidator(not_empty=True)

where UniqueUsernameValidator is a subclass of
formencode.FancyValidator that checks username for duplication. But
instead of hitting the database, I prefer first checking via a global
(Redis) cache variable in the request object.

How do I access this variable from my form?

Thanks.

Jerry

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Re: pyramid.response.Response(app_iter=?)

[jerry]

Hi Gael,

Indeed, app_iter does work flawlessly out-of-box with GridOut object.
It was some other elementary mistake I made that is triggering the
exception, my bad.

Jerry

On Nov 4, 12:04 am, Gael Pasgrimaud g...@gawel.org wrote:
 On Thu, Nov 3, 2011 at 4:54 PM, jerry jerryji1...@gmail.com wrote:
  Hi,

  How does pyramid.response.Response use the (app_iter=) object passed
  in?

  I'm interested in the details because it does not work with
  app_iter=MongoDB's gridfs.grid_file.GridOut object (which supports the
  usual read/seek/tell() operations), but I found myself drowning in the
  zope style implementation in Pyramid.

 GridOut also implement 
 __iter__http://api.mongodb.org/python/current/api/gridfs/grid_file.html#gridf...

 So you can use it as this









  Thanks in advance.

  Jerry

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Re: Celery Configuration with Pyramid

[jerry]

Hi John,

What's wrong with calling initialize_sql from Celery? I am calling
initialize_sql(engine, create_all=False) in my Celery tasks.py and
didn't notice any problem.

Jerry

On Nov 5, 8:05 pm, John Anderson son...@gmail.com wrote:
 So I've been playing with celery configuration with Pyramid and I was
 wondering how you guys handle it?

 My problem right now is the best way to tell celery how to bind SQLAlchemy
 configuration.

 If I don't call initialize_sql inside my celeryconfig.py it doesn't get
 bound but I don't want to call initialize_sql from celeryconfig.py because
 its used both on the app side and to run celeryd.

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pyramid.response.Response(app_iter=?)

[jerry]

Hi,

How does pyramid.response.Response use the (app_iter=) object passed
in?

I'm interested in the details because it does not work with
app_iter=MongoDB's gridfs.grid_file.GridOut object (which supports the
usual read/seek/tell() operations), but I found myself drowning in the
zope style implementation in Pyramid.

Thanks in advance.

Jerry

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Re: Recommended way to do background processing once the response is sent

[jerry]

Before you reinvent the wheel, do take a look at Celery ( 
http://celeryproject.org/
). I have been using it for all sorts of background/async processing
tasks ranging from sending emails to Twitter posting.

It was originally created in the Django world but can be easily
integrated with Pyramid, just define your task and do anywhere in your
view --

DownloadImageTask.delay(image_url)

for the task to be picked and handled by a standalone celeryd process.

Jerry

On Oct 17, 3:14 am, ravi teja raviteja2...@gmail.com wrote:
 Hi,

 I would like to do some background processing (like downloading the image, 
 caching the data etc.) after I send the response for the request.

 Which is the recommended way to do it?

 Does response callback work for this? Should I use a messaging queue to 
 provide the handling to another service?

 Thanks in advance,
 Ravi

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Pyramid: How to use route_url() without a request?

[jerry]

Hi,

I was constructing a paster command and couldn't figure out how to get
route_url() to work in the absence of a request.

Any pointer will be much appreciated!

Jerry

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Re: how to call a function for evry 10 secs

[jerry]

Hi Mike,

I'm curious to know where is this main() for Pyramid you were
referring to?

Thanks.

Jerry

On Jun 30, 5:30 am, Mike Orr sluggos...@gmail.com wrote:
 On Wed, Jun 29, 2011 at 10:40 AM, hisan santosh.s...@gmail.com wrote:
  how to call a function for evry 10 secs in python

 I assume this is a Pylons or Pyramid application since this is
 pylons-discuss. The easiest way would probably be to start a thread in
 the initialization code (environment.py for Pylons, main() for
 Pyramid). The thread would run a long-running function with a loop
 that that records its start time, does its thing, sleeps for ``(10
 seconds - (now - start_time))``, and repeats.

 Another way to do repeated events is with cron, possibly using paster
 request. But that won't work in this case because cron can't handle
 intervals of less than a minute.

 --
 Mike Orr sluggos...@gmail.com

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Re: Disable SQLAlchemy Transaction

[jerry]

Thanks Chris.

I finally got (hopefully is) what I want with --

DBSession = sessionmaker()
dbsession = DBSession()
for item in items_query.all():
dbsession.begin_nested()
item.name = 'foobar'
try:
dbsession.commit()
except:
dbsession.rollback()
dbsession.commit()

What I'm not so sure is whether (PostgreSQL) savepoint is designed to
support millions of iteration before the grand final commit.

Jerry

On May 13, 2:06 pm, Chris Withers ch...@simplistix.co.uk wrote:
 Hi Jerry,

 On 13/05/2011 01:31, jerry wrote:

  Everything is still wrapped in one big transaction --

  -  for item in items_query.all():
  (Pdb)
  2011-05-13 08:23:54,109 INFO sqlalchemy.engine.base.Engine.0x...68cc
  BEGIN (implicit)
  2011-05-13 08:23:54,122 INFO sqlalchemy.engine.base.Engine.0x...68cc
  SELECT ...

 I don't think this is anything to do with Pyramid.

 Read the docs for sessionmaker, particularly those about 
 autocommit:http://www.sqlalchemy.org/docs/orm/session.html#sqlalchemy.orm.sessio...

 So, you have a transaction created for you, but you can manage it yourself:

 session = DBSession()
 session.bind = ...your engine...

 for item in items_query.all():
     try:
         ...do stuff...
     except:
         session.abort()
     else:
         session.commit()

 Now, personally, I like the ZopeTransactionExtension 'cos it lets me
 spell the above in a nicer way and synchronise transactions across
 things like sending mail, writing files to disk, etc.

 I also likehttp://packages.python.org/mortar_rdb/use.html, where the
 pattern would become:

 from mortar_rdb import registerSession,getSession
 import transaction

 registerSession('sqlite://')

 session = getSession()
 for item in session.query(...).all():
      with transaction:
         ...do stuff...

 cheers,

 Chris

 --
 Simplistix - Content Management, Batch Processing  Python Consulting
             -http://www.simplistix.co.uk

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[Pyramid] Disable SQLAlchemy Transaction

[jerry]

It seems transaction based SQLAlchemy session is defined by the
ZopeTransactionExtension --

DBSession =
scoped_session(sessionmaker(extension=ZopeTransactionExtension()))

This is causing problem with my long-running/large-volume paster
command, which are not suitable for transactions. But I couldn't get
the DBSession redefined no matter how I fiddle with the paster command
source. Is there a way to temporarily turn off transaction in a
Pyramid project?

Thanks in advance!

Jerry

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Re: Disable SQLAlchemy Transaction

[jerry]

Hi Michael,

Thanks for the reply, but even if I remove ZTE in my models.py --

DBSession = scoped_session(sessionmaker())

Everything is still wrapped in one big transaction --

- for item in items_query.all():
(Pdb)
2011-05-13 08:23:54,109 INFO sqlalchemy.engine.base.Engine.0x...68cc
BEGIN (implicit)
2011-05-13 08:23:54,122 INFO sqlalchemy.engine.base.Engine.0x...68cc
SELECT ...

If I have 2 million items it's not going to be a robust design to
commit only once in the end after updating 1 million of them.

Is there a way to explicitly turn off the transaction (at least for
SELECT)?

Jerry

On May 12, 11:27 pm, Michael Merickel mich...@merickel.org wrote:
 Nothing is stopping you from defining another session object bound to the
 same engine that does not use the ZTE. As long as your engine is accessible
 through the settings/registry then it shouldn't be an issue to create a
 session in your script and use it only there.

 Michael

 On Thu, May 12, 2011 at 1:37 AM, jerry jerryji1...@gmail.com wrote:
  It seems transaction based SQLAlchemy session is defined by the
  ZopeTransactionExtension --

     DBSession =
  scoped_session(sessionmaker(extension=ZopeTransactionExtension()))

  This is causing problem with my long-running/large-volume paster
  command, which are not suitable for transactions. But I couldn't get
  the DBSession redefined no matter how I fiddle with the paster command
  source. Is there a way to temporarily turn off transaction in a
  Pyramid project?

  Thanks in advance!

  Jerry

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Test Data Setup

[jerry]

I'm using Pyramid with a bunch of unit/integration tests, how can I
ensure common test data is setup _only once_ before a complete test
run?

Thanks.

Jerry

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Re: Pyramid and social auth

[jerry]

My working codes:

Twitter OAuth connect -- 
http://pylonshq.com/pasties/c549d2be586797da17c7fad5ae875372

Facebook OAuth2 connect -- 
http://pylonshq.com/pasties/e4b933da7f577c541cc2f2489f825fdd

Jerry

On Jan 16, 10:16 pm, Adam Klekotka adam.kleko...@gmail.com wrote:
 Hello,
 I'm new to Pyramid and I'm developing an app in which I want to use
 twitter and facebook connect for user auth. I think the repoze.what
 with plugins would be the best way to do that. Is there any tutorial
 how to use it with Pyramid? Or maybe should I choose Pylons1.0
 instead?

 Thanks,
 Adam

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[Pyramid] Genshi Template Auto-restart

[jerry]

Hi,

I'm using the Genshi template via --

myapp/__init__.py
config.add_renderer('.genshi', MyGenshiRenderer)
...
class MyGenshiRenderer:
def __init__(self, info):
loader =
TemplateLoader(os.path.abspath(os.path.dirname(__file__)))
self.tmpl = loader.load(info.name)

def __call__(self, value, system):
return self.tmpl.generate(**value).render('html')
myapp/__init__.py

How can I auto-restart pyramid whenever my template changes?

Thanks!

Jerry

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[Pyramid] add_route/view_config permission issue

[jerry]

Hi,

In pyramid-1.0a7, I noticed something that could be a permission mis-
feature with how add_route/view_config interact --

Sole add_route protects the view --

__init__.py
config.add_route('account', '/account',
renderer='templates/account.genshi',
view='myapp.views.account.account_view',
view_permission='view')
/__init__.py

so does this --

__init__.py
config.add_route('account', '/account')
config.scan()
/__init__.py

account.py
@view_config(route_name='account',
renderer='templates/account.genshi')
permission='view')
def account_view(request):
/account.py

But with the following combination, the view is not protected --

__init__.py
config.add_route('account', '/account', view_permission='view')
config.scan()
/__init__.py

account.py
@view_config(route_name='account', renderer='templates/
account.genshi')
def account_view(request):
/account.py

If this is not considered a bug, maybe stating it explicitly in the
documentation could save others some time.

Thanks.

Jerry

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[Pyramid] User-land Redirection (HTTPFound) Question

[jerry]

Yet-another simple question: What's the best practice in implementing
a user-land multi-point redirection?

The most common application is redirect user back to the initial page
after login, which pyramid's built-in authentication already works
well with @view_config(permission='...')

However, if I issue an HTTPFound myself pointing to GET login view,
how should the user be redirected back after a successful POST? I
might be able to get away with recording request.referer all the way
and jam a {'referer': initial_url} into the headers of the GET login
view response, but there must be better ways. If I recall correctly,
Pylons' redirect_to() simply works out-of-the-box.

Thanks.

Jerry

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[Pyramid] URL Dispatch Test Confusion

[jerry]

Hi,

I have the following URL dispatch setup --

__init__.py
config.add_route('user', '/user')
config.add_route('user_id', '/user/{user_id}')
config.scan()
/__init.py__

views/user.py
@view_config(route_name='user', renderer='user.genshi')
@view_config(route_name='user_id', renderer='user_id.genshi')
def user_view(request):
/views/user.py

which works fine.

However, my unit test case always gets routed to 'user' instead of
'user_id' no matter how I tweak the request.path_info --

test_user_view.py
request = DummyRequest()
request.path_info = route_url('user_id', request, user_id=u'42')
#request.path_info = '/user/42'
resp = views.user.user_view(request)
/test_user_view.py

I'm sure I must be missing something very simple there.

Thanks in advance!

Jerry

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Re: URL Dispatch Test Confusion

[jerry]

Thanks Chris.

Well, I thought routing will always happen after view functions are
decorated with view_config()

Allow me to step back one step and ask: How can routing be unit
tested?

Jerry

BTW, your attached a local URI, the public URL should be
http://docs.pylonshq.com/pyramid/dev/narr/testing.html#creating-functional-tests

On Dec 23, 11:53 am, Chris McDonough chr...@plope.com wrote:
 On Wed, 2010-12-22 at 19:45 -0800, jerry wrote:
  Hi,

  I have the following URL dispatch setup --

  __init__.py
  config.add_route('user', '/user')
  config.add_route('user_id', '/user/{user_id}')
  config.scan()
  /__init.py__

  views/user.py
  @view_config(route_name='user', renderer='user.genshi')
  @view_config(route_name='user_id', renderer='user_id.genshi')
  def user_view(request):
  /views/user.py

  which works fine.

  However, my unit test case always gets routed to 'user' instead of
  'user_id' no matter how I tweak the request.path_info --

  test_user_view.py
  request = DummyRequest()
  request.path_info = route_url('user_id', request, user_id=u'42')
  #request.path_info = '/user/42'
  resp = views.user.user_view(request)
  /test_user_view.py

  I'm sure I must be missing something very simple there.

 route_url returns a fully qualified URL (with host, scheme, port,
 path).  You probably want route_path.  Not sure if this is the problem
 you're writing about, but it's *a* problem.

 I actually don't understand the question, to be honest.  You're
 explicitly calling user_view.  No routing is actually happening; you're
 not running a request through the router.  What are you trying to
 test?  If you're trying to write a functional test, do it like this
 instead:

 file:///home/chrism/projects/pyramid/docs/_build/html/narr/testing.html#creating-functional-tests

 - C

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[Pyramid] How to Unit Test Views Returning HTTPFound?

[jerry]

Hi,

When a view returns HTTPFound, how should I write unit test that
follows the (possible multiple) redirection and asserts the final
response?

Thanks in advance!

Jerry

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Pyramid unittest DummyRequest no attribute 'session'

[jerry]

Since I'm using pyramid_beaker session, my unittest fails --

...
session = request.session
AttributeError: 'DummyRequest' object has no attribute 'session'

What best-practice solution would you recommend?

Thanks in advance.

Jerry

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Re: Pyramid unittest DummyRequest no attribute 'session'

[jerry]

Thanks Chris. This /is/ what I am doing --

def DummyRequest():
req = testing.DummyRequest()
req.session = {} # dummy beaker session
return req

But would you consider adding the dummy session to the module?

Jerry

On Dec 9, 9:41 pm, Chris McDonough chr...@plope.com wrote:
 You might get away with request.session = {}

 - C

 On Thu, 2010-12-09 at 05:35 -0800, jerry wrote:
  Since I'm using pyramid_beaker session, my unittest fails --

  ...
      session = request.session
  AttributeError: 'DummyRequest' object has no attribute 'session'

  What best-practice solution would you recommend?

  Thanks in advance.

  Jerry



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Pyramid Genshi Template Renderer Configuration

[jerry]

Hi,

While waiting for pyramid_chameleon_genshi to stabilize (I've had a
few bugs/glitches in 0.2), is there a way to configure the genuine
Genshi to be the default renderer without going through --

from genshi.template import TemplateLoader
loader = TemplateLoader([os.path.sep.join([here, 'templates'])])
tmpl = loader.load('template.genshi')
c = {'foo': 'bar'}
return Response(tmpl.generate(**c).render())

in every view function?

Thanks.

Jerry

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Re: The (missing) argument for pyramid

[jerry]

Does anyone have the roughest ball-park estimation on when pyramid
will be going beta?

Thanks.

Jerry

On Nov 15, 7:19 am, Ben Bangert b...@groovie.org wrote:
 On Nov 14, 2010, at 1:54 PM, BrianTheLion wrote:

  I've been away for a while and am trying to come up to speed on some
  pretty significant developments in the pylons community. I've spent
  considerable time with the pyramid docs in the last week but have
  failed to find an answer to one very important question: If your goal
  (like mine) is to build web apps, what reasons do you have to switch
  to pyramid?

 If you don't need the extensibility, if you're building a single app for the 
 whole company. You probably don't have much reason to change at all. The fact 
 that you haven't seen some pyramid add-on you're dying to use already sort of 
 answers that.

  Let me engage in a bit of flame-fanning here just to make a point. As
  of right now, pyramid and pylons (v1.0) are, effectively, competing
  technologies. They are competing for the mindshare amongst Python web
  application developers. When our BDFLs tell us that pyramid is an
  improvement over pylons, I believe them but I don't particularly care.
  As an app-dev, I am pretty much agnostic to things like pylon's
  extensibility model (http://docs.pylonshq.com/faq/
  pylonsproject.html#why-not-just-continue-developing-the-pylons-1-0-
  code-base). What I care about is how quickly and easily I can get my
  app up and running, how easy it will be to support and maintain.
  Bottom line, I think the BDFLs have punted on making a pro-pyramid
  technical argument to their app-devs, maybe because there isn't one to
  be made.

 We aren't preaching the gospel on Pyramid right now because it's still alpha. 
 As I mentioned on my blog, I'll be writing posts about things Pyramid 
 addresses in the future, until then, I'm sorry, but you'll have to wait like 
 everyone else. I only have so much time in the day, I have to budget my time 
 very carefully.

  Flame-fanning finished. And I was lying about not caring. *I BELIEVE*
  and I want to see pyramid go forward. But in the end app-devs are the
  least of pyramid's worries; we're always looking for excuses to learn
  new things. Middle managers are much more difficult to convince.
  Hence, I'm calling for some management-friendly pro-pyramid
  propaganda:https://github.com/Pylons/pylonshq/issues/issue/2. If
  you're an app-dev trying to figure out how you're going to convince
  your manager to let you learn pyramid, bump it up!

 When we're ready for management types to move entire development shops to 
 Pyramid, we'll have that documentation. Right now, the focus isn't on that, 
 its on getting things done so that such a case will be trivial to make in the 
 future.

 Cheers,
 Ben

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Re: Pylons marketing, ( new thread from web tech )

[Jerry]

Guys, there is obviously a lot of passion and love being ignited in
this thread, but instead of talking inward among ourselves here,
imagine how much influence can be generated if the same messages are
blogged/twittered to the outside world.

So don't bother Ben with non-tech proposals. He is the engineering
director, we all are marketing VPs.

Jerry

On Aug 25, 7:45 am, Ben Bangert b...@groovie.org wrote:
 On Aug 24, 2009, at 4:13 PM, Iain Duncan wrote:

  That's cool, but Ben still has to show some interest if you guys  
  want it
  to happen. I would put time in, but I better see that it's not going  
  to
  be wasted or unwanted effort, because like you guys, I have code to
  write too!

 As Phil Jenvey mentioned earlier, we both watch twitter and other blog  
 tracking services to try and speak up when we see opportunities. As  
 I've mentioned before, I'd love to see people contribute to both  
 marketing, and the site (which is part of why its code is open-
 sourced). What other signs of interest should I be providing?

 Cheers,
 Ben
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Re: Pylons marketing, ( new thread from web tech )

[Jerry]

I want to chime in on this Pylons marketing topic -- I'm sure many, if
not all, of you are also Hacker News ( http://news.ycombinator.com/ )
readers, so why not piggyback by commenting on the Django/Python web
framework related threads there, especially those not-so-positive
reviews such as this recent one -- Dropping Django (
http://www.recruititassociates.com/jobs/job.aspx?jobid=2743 ) to
promote awareness/interest on Pylons? The sad news is that I always
found myself being the only one doing that and not recognizing the
familiar names here over there -- I hope I'm under the wrong
impression.

There are many times more founders/evangelists on HN than on any pure
tech forum like this one, and every conversion gained over there
effectively means winning potentially dozens of developers under/
around them.

Marketing just requires a bit of persistence, and if Seth Godin and
Tim Ferriss can do it, we sure can as well.

Thoughts?

Jerry

On Jul 20, 5:11 am, Iain Duncan iaindun...@telus.net wrote:
 Taking Ben's suggestion, I just went ahead created a new thread.

 Mike Orr said:
 
 I have started a Talking Points wiki page to gather the essential
 points.  Please add anything that's missing.

 http://wiki.pylonshq.com/display/pylonscommunity/Talking+Points
 

 Thanks Mike, what do you and the other core team propose we do from here
 with this starting point? It is probably the area where I can most
 helpfully contribute to Pylons, as I've done a fair bit of
 sales/marketingstuff and as I mentioned, I feel I have a real vested
 interest in making sure that clients feel good about the future
 viability of Pylons ( and Repoze, Pypes, etc ).

 As cheesy as it sounds ( and we don't have to call it that ), I think we
 need a clear Pylons Vision Statement. The purpose and future goals of
 Pylons distilled into a few very clear sentences that help separate it
 from competition, but in a realistic and accurate manner. IMHO, I
 believe this has been one the main problems for TG, no real clear vision
 on what the framework was trying to provide and for whom. Some wanted it
 to be a django-competitor, others something different, and that has been
 an elephant in the room for too long now.

 iain
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Re: Javascript in template

[Jerry]

First of all, this question has _nothing_ to do with Pylons -- if you
didn't know about it, you do now.

Second, it seems that you have intentionally renamed the downloaded
JavaScript library, so I think the first point to check can be: Is
your installed copy accessed at http://yourserver/js/calendar.js ?

Third, a bare-bone working HTML example (not tested) would be --


html
  head
script type=text/javascript src=/js/
dhtmlgoodies_calendar.js/script
  /head
  body
form
  input type=button value=Cal onclick=displayCalendar
(document.forms[0].theDate,'/mm/dd',this) /
/form
  /body
/html


Fourth, I can't stop myself from warning you that that site is
providing very sloppy (reads BAD) HTML example with non-progressive
(reads BAD) JavaScript usage which does not even get rendered properly
in Firefox. The same effect can be achieved 42 times more elegantly
with any modern unobstructive JavaScript libraries such as JQuery,
Prototype, etc.

Finally, I think you should show more effort by reading up on the HTML
basics first.

Jerry

On Mar 6, 4:34 am, menshikoval...@gmail.com
menshikoval...@gmail.com wrote:
 Hello.

 How to use JavaScript in template form?

 I'v add

 script src='/js/calendar.js'/script
 input type=text value=2004/02/02 readonly name=theDate
 input type=button value=Cal onclick=displayCalendar
 (document.forms[0].theDate,'/mm/dd',this)

 http://www.dhtmlgoodies.com/index.html?page=calendarScripts

 Alexy
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Re: Pylons 0.9.7 released

[Jerry]

My most sincere congratulations and tons of thanks to all the Pylons
heros!

Jerry

On Feb 23, 2:46 pm, Ben Bangert b...@groovie.org wrote:
 Pylons 0.9.7 has been released, I've posted a full write-up on it on  
 the PylonsHQ 
 site:http://pylonshq.com/articles/archives/2009/2/pylons_097_released

 Cheers,
 Ben

  smime.p7s
 3KViewDownload
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Re: formencode ForEach doesn't obey not_empty=True

[jerry]

Hi,

Have you tried --

not_tested
ForEach(Int(not_empty=True), ...)
/not_tested

Jerry

On Jan 26, 5:33 am, eleith ele...@gmail.com wrote:
 for my schema, i want to handle
 
 delete?id=100
 delete?id=100id=101id=102

 and throw an error for

 delete?
 -
 my validators look like this:

 id = ForEach(Int(), not_empty=True, convert_to_list=True)

 however, this passes when even when i don't pass in an 'id'

 i've even tried

 All(NotEmpty(), ForEach())

 that doesn't work either. i've ended up writing my own function and
 subclassing into SimpleFormValidator to handle this case for me (i
 just check if the len(values['id'])  1, and return an error message)

 so either i'm going about this the wrong way, or there is an error in
 ForEach and/or All.

 any suggestions? (although, i'm happy with my solution, just thought i
 would publish my findings)
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Re: Can't deploy with FastCGI on Apache2

[jerry]

[Sun Jan 18 23:15:59 2009] [error] [client 127.0.0.1] Error - class
'genshi.template.eval.UndefinedError': {...} has no member named
flash_obj


Are you trying to render some TG flash_obj stuff? Hint, Pylons
WebHelpers usage: 
http://groups.google.com/group/pylons-discuss/msg/18e9f84bf7533041

Jerry

On Jan 22, 7:20 am, Gustavo Narea m...@gustavonarea.net wrote:
 Anyone?

 On Sunday January 18, 2009 23:29:31 Gustavo Narea wrote:

  Hello,

  I've tried the tutorial at
  http://wiki.pylonshq.com/display/pylonscookbook/Production+Deployment...
 g+Apache, +FastCGI+and+mod_rewrite, but I can't get it to work.

  As suggested on the tutorial, I made a first try with CGI (using the
  attached script) but I get the error found in the attached log.

  What's the problem?

  Thanks in advance.

  PS: The last line is run_with_cgi(wsgi_app).run(), but I replaced it to
  run_with_cgi(wsgi_app) as you'll see in the script.

 --
 Gustavo Narea http://gustavonarea.net/.

 Get rid of unethical constraints! Get freedomware:http://www.getgnulinux.org/
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Re: Is Django more popular than Pylons?

[jerry]

Yes.

And that's because if the same question is asked in a Django group,
you'll probably get far more similar trolls.

Jerry

On Jan 18, 7:05 pm, walterbyrd walterb...@iname.com wrote:
 And if so, why?
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Re: Paster controller command not recognized

[jerry]

Of course, all the available paster commands are in the Commands
section --

$ paster -h
Usage: paster [paster_options] COMMAND [command_options]

Options:
  --version show program's version number and exit
  --plugin=PLUGINS  Add a plugin to the list of commands (plugins are
Egg
specs; will also require() the Egg)
  -h, --helpShow this help message

Commands:
  create   Create the file layout for a Python distribution
  help Display help
  make-config  Install a package and create a fresh config file/
directory
  points   Show information about entry points
  post Run a request for the described application
  request  Run a request for the described application
  serveServe the described application
  setup-appSetup an application, given a config file

And your question was?

Jerry

On Jan 16, 10:22 am, Bryan bryanv...@gmail.com wrote:
 I am inside a Pylons project.  The project is called jobtrax.
 The shell session in my previous post all occurs in the jobtrax
 project folder:

 b...@brysrv:~/jobtrax$ paster controller home
 Command controller not known

 On Jan 13, 7:39 pm, Jorge Vargas jorge.var...@gmail.com wrote:

  On Thu, Jan 8, 2009 at 1:30 PM, Bryan bryanv...@gmail.com wrote:

   When I run paster controller controller name, i get an error:
   Command controller not known
   I have a .egg-info directory, and a paster_plugins.txt file in it with
   Pylons, WebHelpers, PasteScript inside on separate lines.
   I own all the files and directories, and am running the paster command
   inside of the distribution folder.

   Why can't paster find my paster_plugins.txt settings?

  paster controller is a package command, which means it won't work
  unless you are inside a pylons project, I don't remember right now
  what exactly determines that but it's a functionality of PasteScript
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Re: How to use Genshi to implement the SimpleSite example of the pylonsbook?

[jerry]

index.html
?xml version=1.0 encoding=utf-8?
!--!
You should read the Geddit tutorial:
http://genshi.edgewall.org/wiki/GenshiTutorial
--
html xmlns=http://www.w3.org/1999/xhtml; xmlns:py=http://
genshi.edgewall.org/ xmlns:xi=http://www.w3.org/2001/XInclude;
  py:match path=head once=true
head py:attrs=select('@*')
title${c.title}title/
div py:strip=True${select('*|text()')}/div
  /py:match
  py:match path=body once=true
body py:attrs=select('@*')
  SimpleSite
  a name=top /
  h1${c.heading or 'No Title'}/h1
  ...
  div py:strip=True${select('*|text()')}/div
/body
  /py:match
/html

view.html
?xml version=1.0 encoding=utf-8?
html xmlns=http://www.w3.org/1999/xhtml; xmlns:py=http://
genshi.edgewall.org/ xmlns:xi=http://www.w3.org/2001/XInclude;
  xi:include href=index.xml parse=xml /
  head /
  body${c.page.content}/body
/html

--
Jerry


On Dec 24, 4:19 am, johntable liij...@gmail.com wrote:
 HI,
 I am reading the pylonsbook, and I want to use Genshi to implate the
 SimpleSite example. But I find it is not as easier as using Mako or
 Jinja to implate the layout.

 Who can give me the Genshi examples of index.html and view.html?

 Thanks very much!!

 
 index.html:
 !DOCTYPE HTML PUBLIC -//W3C//DTD HTML 4.01//EN
 http://www.w3.org/TR/html4/strict.dtd;
 html
 head
     title${self.title()}/title
     ${self.head()}
 /head
 body
     ${self.header()}
     ${self.tabs()}
     ${self.menu()}
     ${self.heading()}
     ${self.breadcrumbs()}
     ${next.body()}
     ${self.footer()}
 /body
 /html
 %def name=title()SimpleSite/%def
 %def name=head()/%def
 %def name=header()a name=top/a/%def
 %def name=tabs()/%def
 %def name=menu()/%def
 %def name=heading()h1${c.heading or 'No Title'}/h1/%def
 %def name=breadcrumbs()/%def
 %def name=footer()pa href=#topTop ^/a/p/%def
 
 view.html:
 %inherit file=/base/index.html/
 %def name=title()${c.page.title}/%def
 %def name=heading()h1${c.page.heading or c.page.title}/h1/
 %def
 ${c.page.content}
 
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Re: serving up generated images

[jerry]

Hi,

You should find this thread helpful --

http://groups.google.com/group/pylons-discuss/browse_thread/thread/70fb565a909c72f0/aae0f836d23e62a2?lnk=gstq=dataapp#aae0f836d23e62a2

Jerry

On Dec 8, 5:40 am, erowan [EMAIL PROTECTED] wrote:
 Hello,

 I have a web app that dynamically generates images (png files). The
 main html response page has links to these files

 i.e.
 a href=/tmp/demand.png title=/tmp/demand
        img id=/tmp/demand src=/tmp/demand.png width=300
 height=200 /

 I created the tmp dir under public and while running pylons in
 development this worked ok. Basically these filepaths resolved to the
 same location.

 1. os.path.join(config['app_conf']['public_dir'], 'tmp', filename)
 2. graph_file_name = h.url_for('/tmp/' + str(graph_file_name))

 However, after packaging, install  deploying the app with the same
 config file dev.ini

 python setup.py bdist_egg
 easy_install bmra_web-0.1.0dev-py2.5.egg
 cd some_deployment_dir
 paster serve dev.ini

 The dirs are not the same. 1 is but 2 resolves under the ~site-
 packages/bmra_web-0.1.0dev-py2.5.egg installation dir. I am not sure
 how to handle this? Should I be using another  StaticURLParser
 instance for this tmp directory combined with Casade and maybe name it
 _tmp (does this bypass the routes dispatching?).

 I am a bit confused as to how to handle this. Thanks.
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Re: Announcement of Pylons Powered Site

[jerry]

Hi Zoogie,

First of all, congratulations on making the right decision with Pylons
(not saying other choices are wrong... :), whose learning curve _will
be_ steeper than those of its peers, but its payoff will more than
offset the investment.

Back when I started, I had to Dive Into Python [http://
diveintopython.org/] before anything else. I particularly like its
approach of being pragmatic, i.e., demonstrating incremental steps of
a (semi-)real life project, rather than showing Hello-World examples
chapter after chapter, and it even has a nice blend of some best
practice (TDD!).

Then I read from cover-to-cover the Pylons Wiki [http://
wiki.pylonshq.com/dashboard.action], following every step of the
tutorials. Of course nowadays a nicer trail is laid out in The Pylons
Book [http://pylonsbook.com/]. I chose Genshi as my template engine
and found Christopher's Geddit Tutorial [http://genshi.edgewall.org/
wiki/GenshiTutorial] of great help.

While trying to grasp the WSGI concept, I had to read PEP 333 [http://
www.python.org/dev/peps/pep-0333/] more than 10 tens (seriously, and
still not digesting 100% its concepts).

As for database/SQL, I read half of Joe Celko's SQL for Smarties:
Advanced SQL Programming [http://www.amazon.com/Joe-Celkos-SQL-
Smarties-Programming/dp/1558605762], which prepared me for the more
advanced topics (Joe Celko's Trees and Hierarchies in SQL for
Smarties [http://www.amazon.com/Hierarchies-Smarties-Kaufmann-
Management-Systems/dp/1558609202/ref=pd_sim_b_1/181-5524468-1861956]).
I subscribe to the pgsql.sql Google Group [http://groups.google.com/
group/pgsql.sql/topics], a low-volume news group for intermediate to
advanced (pl)SQL related discussions.

I also read RESTful Web Services [http://www.amazon.com/RESTful-Web-
Services-Leonard-Richardson/dp/0596529260/ref=sr_1_1?
ie=UTF8s=booksqid=1225817701sr=1-1] to acquire basic understanding
of REST before designing my routes.

Frontend side, I chose jQuery so Learning jQuery [http://
www.amazon.com/Learning-jQuery-Interaction-Development-JavaScript/dp/1847192505/ref=sr_1_1?ie=UTF8s=booksqid=1225818141sr=1-1]
becomes a must-read.

From not too long ago I started to subscribe to unofficial planet
python [http://www.planetpython.org/] and find it worth recommending.

Last but not the least, how can I leave out the classic Test Driven
Development: By Example [http://www.amazon.com/Test-Driven-
Development-Addison-Wesley-Signature/dp/0321146530/ref=sr_1_1?
ie=UTF8s=booksqid=1225817901sr=1-1] -- just wish it comes with an
automatic cane that will whip me every time that I fail to write a
test first.

Learning is an arduous process, but every sequoia starts from a tiny
seed, all we need to do is stand taller than yesterday, in good times
or not [http://venturebeat.com/2008/10/10/the-sequoia-rip-good-times-
presentation-get-your-copy-here/].

Jerry

On Nov 3, 8:07 pm, [EMAIL PROTECTED] wrote:
 Jerry, very inspiring. Well done.
 I am where you were a year and a half ago.
 Trying to learn Pylons , but realizing I have to learn cgi (at least
 to get a better understanding of the big picture), sql etc.
 It gets a little confusing.

 Do you mind sharing some of your learning resources, and probably even
 the order of learning that made most sense?
 thanks

 Zoogie
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Re: Announcement of Pylons Powered Site

[jerry]

One day, I'm going to start my own blog, even if just for correcting
all those broken links.

Jerry

On Nov 4, 2:23 pm, jerry [EMAIL PROTECTED] wrote:
 Hi Zoogie,

 First of all, congratulations on making the right decision with Pylons
 (not saying other choices are wrong... :), whose learning curve _will
 be_ steeper than those of its peers, but its payoff will more than
 offset the investment.

 Back when I started, I had to Dive Into Python [http://
 diveintopython.org/] before anything else. I particularly like its
 approach of being pragmatic, i.e., demonstrating incremental steps of
 a (semi-)real life project, rather than showing Hello-World examples
 chapter after chapter, and it even has a nice blend of some best
 practice (TDD!).

 Then I read from cover-to-cover the Pylons Wiki [http://
 wiki.pylonshq.com/dashboard.action], following every step of the
 tutorials. Of course nowadays a nicer trail is laid out in The Pylons
 Book [http://pylonsbook.com/]. I chose Genshi as my template engine
 and found Christopher's Geddit Tutorial [http://genshi.edgewall.org/
 wiki/GenshiTutorial] of great help.

 While trying to grasp the WSGI concept, I had to read PEP 333 
 [http://www.python.org/dev/peps/pep-0333/] more than 10 tens (seriously, and
 still not digesting 100% its concepts).

 As for database/SQL, I read half of Joe Celko's SQL for Smarties:
 Advanced SQL Programming [http://www.amazon.com/Joe-Celkos-SQL-
 Smarties-Programming/dp/1558605762], which prepared me for the more
 advanced topics (Joe Celko's Trees and Hierarchies in SQL for
 Smarties [http://www.amazon.com/Hierarchies-Smarties-Kaufmann-
 Management-Systems/dp/1558609202/ref=pd_sim_b_1/181-5524468-1861956]).
 I subscribe to the pgsql.sql Google Group [http://groups.google.com/
 group/pgsql.sql/topics], a low-volume news group for intermediate to
 advanced (pl)SQL related discussions.

 I also read RESTful Web Services [http://www.amazon.com/RESTful-Web-
 Services-Leonard-Richardson/dp/0596529260/ref=sr_1_1?
 ie=UTF8s=booksqid=1225817701sr=1-1] to acquire basic understanding
 of REST before designing my routes.

 Frontend side, I chose jQuery so Learning jQuery 
 [http://www.amazon.com/Learning-jQuery-Interaction-Development-JavaScript/dp/...]
 becomes a must-read.

 From not too long ago I started to subscribe to unofficial planet
 python [http://www.planetpython.org/] and find it worth recommending.

 Last but not the least, how can I leave out the classic Test Driven
 Development: By Example [http://www.amazon.com/Test-Driven-
 Development-Addison-Wesley-Signature/dp/0321146530/ref=sr_1_1?
 ie=UTF8s=booksqid=1225817901sr=1-1] -- just wish it comes with an
 automatic cane that will whip me every time that I fail to write a
 test first.

 Learning is an arduous process, but every sequoia starts from a tiny
 seed, all we need to do is stand taller than yesterday, in good times
 or not [http://venturebeat.com/2008/10/10/the-sequoia-rip-good-times-
 presentation-get-your-copy-here/].

 Jerry

 On Nov 3, 8:07 pm, [EMAIL PROTECTED] wrote:

  Jerry, very inspiring. Well done.
  I am where you were a year and a half ago.
  Trying to learn Pylons , but realizing I have to learn cgi (at least
  to get a better understanding of the big picture), sql etc.
  It gets a little confusing.

  Do you mind sharing some of your learning resources, and probably even
  the order of learning that made most sense?
  thanks

  Zoogie
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Re: Announcement of Pylons Powered Site

[jerry]

Hi MilesTogoe,

Honestly, who has 6 mos to do all that reading ?

While I do understand and appreciate some of the real-life
constraints, I strive to fight similar opinion whenever I see one.

Unfortunately, I can't do a direct strong counter-argument, but I can
show how evil can creep in faster than you realize by bringing up the
following --

Who has time to do a scalable architecture? -- Friendster (OK, you
can argue that Twitter said the same thing, but few actually use
Twitter as an excuse when questioned by a VC)

Who has time to learn Python, let's just keep using Perl/VBScript!
-- Joel the programmer

And if it cannot get running in 10 minutes - scrap it and start
over.

For seasoned developers like you who have rich experience in other
frameworks, I think it's possible.

Jerry

On Nov 4, 5:56 pm, MilesTogoe [EMAIL PROTECTED] wrote:
 Garland, Ken R wrote:
  Hey Jerry, I've read and follow most of what you listed and found it
  all most helpful. Another HUGE help for me were IRC channels like
  #pylons,  #python, #sqlalchemy and others on freenode. This allowed me
  to learn from others and pass on knowledge. It is surprising how
  helpful it is to help others in that not only do you add another way
  in which to retain the knowledge but also realize things you might not
  have known by helping others that think differently and need things
  explained in different ways.

 Honestly, who has 6 mos to do all that reading ?  A framework with a
 heavy learning curve doesn't imply it's more professional, just a harder
 to use package.  Hey, you need to get a site up and running as quick and
 agile as possible to see if it even will work market or client wise.  
 Most fail so where's the ROI with a heavy learning curve?  I've been
 watching and hoping for an improved, easier to use Pylons (why I follow
 this list) but in the meantime, I'm getting stuff running after days
 using the Werkzeug stack and yes, even Rails.  Learning curves cost
 serious money and opportunity cost - until you know that you really need
 a high horsepower site - get something running quick - besides, it's a
 lot more fun.  So yes, Pylons does need a 10 minute blog tutorial!  And
 if it cannot get running in 10 minutes - scrap it and start over.

  On Tue, Nov 4, 2008 at 2:40 PM, jerry [EMAIL PROTECTED] wrote:

  One day, I'm going to start my own blog, even if just for correcting
  all those broken links.

  Jerry

  On Nov 4, 2:23 pm, jerry [EMAIL PROTECTED] wrote:

  Hi Zoogie,

  First of all, congratulations on making the right decision with Pylons
  (not saying other choices are wrong... :), whose learning curve _will
  be_ steeper than those of its peers, but its payoff will more than
  offset the investment.

  Back when I started, I had to Dive Into Python [http://
  diveintopython.org/] before anything else. I particularly like its
  approach of being pragmatic, i.e., demonstrating incremental steps of
  a (semi-)real life project, rather than showing Hello-World examples
  chapter after chapter, and it even has a nice blend of some best
  practice (TDD!).

  Then I read from cover-to-cover the Pylons Wiki [http://
  wiki.pylonshq.com/dashboard.action], following every step of the
  tutorials. Of course nowadays a nicer trail is laid out in The Pylons
  Book [http://pylonsbook.com/]. I chose Genshi as my template engine
  and found Christopher's Geddit Tutorial [http://genshi.edgewall.org/
  wiki/GenshiTutorial] of great help.

  While trying to grasp the WSGI concept, I had to read PEP 333 
  [http://www.python.org/dev/peps/pep-0333/] more than 10 tens (seriously, 
  and
  still not digesting 100% its concepts).

  As for database/SQL, I read half of Joe Celko's SQL for Smarties:
  Advanced SQL Programming [http://www.amazon.com/Joe-Celkos-SQL-
  Smarties-Programming/dp/1558605762], which prepared me for the more
  advanced topics (Joe Celko's Trees and Hierarchies in SQL for
  Smarties [http://www.amazon.com/Hierarchies-Smarties-Kaufmann-
  Management-Systems/dp/1558609202/ref=pd_sim_b_1/181-5524468-1861956]).
  I subscribe to the pgsql.sql Google Group [http://groups.google.com/
  group/pgsql.sql/topics], a low-volume news group for intermediate to
  advanced (pl)SQL related discussions.

  I also read RESTful Web Services [http://www.amazon.com/RESTful-Web-
  Services-Leonard-Richardson/dp/0596529260/ref=sr_1_1?
  ie=UTF8s=booksqid=1225817701sr=1-1] to acquire basic understanding
  of REST before designing my routes.

  Frontend side, I chose jQuery so Learning jQuery 
  [http://www.amazon.com/Learning-jQuery-Interaction-Development-JavaScr..]
  becomes a must-read.

  From not too long ago I started to subscribe to unofficial planet
  python [http://www.planetpython.org/] and find it worth recommending.

  Last but not the least, how can I leave out the classic Test Driven
  Development: By Example [http://www.amazon.com/Test-Driven-
  Development-Addison-Wesley-Signature/dp/0321146530/ref=sr_1_1?
  ie=UTF8s

Re: Javascript library

[jerry]

Hi Rech,

jQuery + markitup [http://markitup.jaysalvat.com/examples/]

Jerry

On Nov 4, 5:43 pm, Mr.Rech [EMAIL PROTECTED] wrote:
 Hi all,
 I'm starting to play with Pylons since I need to develop a web app
 here at work. I've been reading the Pylons book, a lot of
 documentation, many threads on the forum etc. I enjoy Pylons, it's
 much better than other tools I'm used to. Anyway it has a lot of
 different components and it's not always so easy to choose the right
 one. So I decided to stick with those components that come with Pylons
 out of the box: Mako, SQLAlchemy, WebHelpers and so on, and I must say
 that I'm happy with them.

 However, I'm a little bit lost about Javascript library, since, as far
 as I can understand, from version 0.9.7 there is no default Javascript
 library. So, I'm asking you which library you are using and why. As
 for me, I have only few major needs:

 1) I need a WYSIWYG editor like Tinymce (http://
 tinymce.moxiecode.com/) for textareas

 2) I'd like the Javascript framework can save me as much as possible
 from digging into javascript code (I'm worried about javascript tricks
 and compatibility isssues)

 3) I need AJAX and some Javascript visual effects to make the
 application more appealing

 4) The Javascript framework should let me develop fast (sorry, but
 I've some strict time constraints and my boss is not very patient ;)

 I've looked at MochiKit that seems quite promising, but I haven't
 heard anyone here using it. In the Pylons Book James Gardner
 introduces YUI that seems quite good, but I've tried its WYSIWYG
 editor and it has some glitches.

 I wouldn't start a religious war here, I'd just like to know what
 Pylons people are used to use in their applications and why.

 Hope you can help me.

 Thanks in advance,
  Andrea
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Re: unknown database

[jerry]

sqlalchemy.exc.OperationalError: (OperationalError) (1049, Unknown
database 'mytest'') None None
.^

 [app:main]
...
 sqlalchemy.url = mysql://mysqluser:[EMAIL PROTECTED]:3306/mytest'
.^

Isn't there a redundant single quote character there?

Jerry

On Nov 1, 7:05 pm, [EMAIL PROTECTED] wrote:
 Hi all,

 I'm new to pylons and getting the following error while trying to
 follow the SQLAlchemy tutorial.

 $ paster setup-app development.ini

 17:48:27,604 INFO  [im.websetup] Creating tables
 Running setup_config() from im.websetup
 Traceback (most recent call last):
   File /usr/bin/paster, line 8, in module
     load_entry_point('PasteScript==1.6.3', 'console_scripts', 'paster')
 ()
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/command.py, line 79, in run
     invoke(command, command_name, options, args[1:])
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/command.py, line 118, in invoke
     exit_code = runner.run(args)
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/appinstall.py, line 68, in run
     return super(AbstractInstallCommand, self).run(new_args)
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/command.py, line 213, in run
     result = self.command()
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/appinstall.py, line 456, in command
     self, config_file, section,
 self.sysconfig_install_vars(installer))
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/appinstall.py, line 598, in setup_config
     mod.setup_app, command, filename, section, vars)
   File /usr/lib64/python2.5/site-packages/PasteScript-1.6.3-py2.5.egg/
 paste/script/appinstall.py, line 612, in _call_setup_app
     func(command, conf, vars)

 ... (cut to shorten output)

  File /usr/lib64/python2.5/site-packages/SQLAlchemy-0.5.0rc2-
 py2.5.egg/sqlalchemy/pool.py, line 280, in __connect
     connection = self.__pool._creator()
   File /usr/lib64/python2.5/site-packages/SQLAlchemy-0.5.0rc2-
 py2.5.egg/sqlalchemy/engine/strategies.py, line 80, in connect
     raise exc.DBAPIError.instance(None, None, e)
 sqlalchemy.exc.OperationalError: (OperationalError) (1049, Unknown
 database 'mytest'') None None

 My myapp.model.__init__.py is ...

 import sqlalchemy as sa
 from sqlalchemy import orm

 from myapp.model import meta

 def init_model(engine):
     sm = orm.sessionmaker(autoflush=True, autocommit=True,
 bind=engine)

     meta.engine = engine
     meta.Session = orm.scoped_session(sm)

 t_item = sa.Table('item', meta.metadata,
     sa.Column('id', sa.types.Integer, primary_key=True),
     sa.Column('name', sa.types.String(32)),
     sa.Column('description', sa.types.String(32)),
     sa.Column('quantity', sa.types.Integer))

 class Item(object):
     def __str__(self):
         return self.title

 orm.mapper(Item, t_item)

 And in my development.ini I have the database listed as ...

 ...
 [app:main]
 use = egg:im
 full_stack = true
 sqlalchemy.url = mysql://mysqluser:[EMAIL PROTECTED]:3306/mytest'
 sqlalchemy.pool_recycle = 3600
 cache_dir = %(here)s/data
 beaker.session.key = im
 beaker.session.secret = somesecret

 Anyone have an idea what's going on?
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Re: Announcement of Pylons Powered Site

[jerry]

Hi Matt,

It _is_ a lot of effort. Forgot to mention back 1.5 years ago I
started from _absolute scratch_ that I had never written a Python
program before, never written an full HTML page before, never written
a single line of JavaScript program before, never used a web framework
before, never used PostgreSQL and never even worked to join more than
2 tables before...

And the feeling of learning all those is really good, as good as
launching a site. :)

Jerry

On Oct 29, 6:27 pm, Matthew Woolnough [EMAIL PROTECTED] wrote:
 Wow. That's quite a lot of effort.  I know how it is to work on a long
 project like that on your own.  You must feel very relieved to have it in
 production now.

 Congrats!

 On 30/10/08 8:18 AM, jerry [EMAIL PROTECTED] wrote:



  Hi Matt,

  I did it alone part-time during the past 1.5 years, that's probably
  2500+ man hours.

  Jerry

  On Oct 29, 6:03 pm, Matthew Woolnough [EMAIL PROTECTED] wrote:
  Hey Jerry,

  Well done!  

  I've been lurking in the sidelines for sometime now, and am yet to dip my
  toes in the Pylons pool.  Its its not too much to ask, approx how many man
  hours did it take to get this site to this state?

  I'm interested in doing a baby site also!

  Matt

  On 30/10/08 7:47 AM, jerry [EMAIL PROTECTED] wrote:

  pher Lenz, and many others who have brought these
  fantastic tools and patiently answered my n
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Pylons under fapws(2)

[jerry]

Hi,

As my paster server, no matter how its thread and process config
values are tweaked, can't even get above 20 [#/s], I've been
struggling to run my Pylons app under fapws2.

Does any kind soul have a quick Pylons+fapws2 configuration/tutorial
to share?

Thanks in advance.

Jerry
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Re: pylons and jquery - restricting POST calls

[jerry]

With your current design, you can't.

For my site, I do not have separate controllers/routes for AJAX,
instead, different values are returned from a generic controller
according to request type --

class ElementController(BaseController):
def get(self, id):
populate_c(id)
if request.is_xhr:
return render('ajax_fragment_template')
return render('full_page_template')

Jerry

On Oct 15, 10:26 am, przemek.ch [EMAIL PROTECTED] wrote:
 Hi,

 I've build two select boxes. Onchange method on the first selectbox I
 fill with ajax the second one using the selected value as a parameter.
 It works.

 function loadElements(groupID){
                 $(#secondSelectDiv).load(${h.url_for(controller='ajax',
 action='getElements', id='')}+groupID);

 }

 The problem is that an url is generated to my method.
 for examplehttp://localhost:5000/ajax/getElements/1
 And it can be called directly from the browser.

 How can I hide or block that.

 If I'll use from pylons.decorators.rest @restrict('POST') on the
 method then it will also be blocked for the jquery load method.

 Any ideas?
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Re: Dynamic Template Inclusion in Genshi

[jerry]

Hi EricHolmberg,

Thank you very much for the tip.

On Genshi group, kindy offered a similar, but somewhat more concise,
solution (http://groups.google.com/group/genshi/msg/c47bca2e4b0fd996),
which I adopted as --

Pylons controller
WidgetController(BaseController):
def index(self, id):
c.widget_template = (
'''?xml version=1.0 encoding=utf-8?'''
'''div xmlns=http://www.w3.org/1999/xhtml; '''
'''xmlns:py=http://genshi.edgewall.org/;'''
'''${h.url_for(controller='item', action='index',
id=c.id)}'''
'''/div''')
return render_genshi('master_template')


Genshi master_template.html
?xml version=1.0 encoding=utf-8?
?python
from genshi.template import MarkupTemplate
?
html xmlns=... xmlns:py=...
head /
body
  div${MarkupTemplate(c.widget_template).generate(c=c, h=h)}/div
/body
/html

How about documenting this recipe on the PylonsHQ?

Jerry

On Oct 8, 1:29 am, EricHolmberg [EMAIL PROTECTED] wrote:
  to insert arbitrary literal XML markup fragments. However, I still
  haven't figured
  out a way to _process_ the Genshi sub-template string _from inside
  another
  Genshi template_, i.e., I want the following to come out as '''/
  widget''' --

  ${_some_uber_magic_(h.url_for(controller='widget', action='index',
  id=None))}

  when dynamically included in another Genshi template.

 Ah, now that is a good question!  I was thinking that you might be
 able to use the recursive='true' attribute, but I tested it and it
 doesn't work.  I'm not sure if there is another clever way to do it.

 So off hand, the only thing I can think of is to either recursively
 render until the output doesn't change (really nasty for performance)
 or do a pre-render of the stuff from the database.  See if this code
 might help:

 from genshi import XML
 from genshi.template import MarkupTemplate

 def get_url():
     return '/widget'

 def PreRender(xml):
     # wrap in html tags to make genshi happy
     tmpl = html xmlns:py=http://genshi.edgewall.org/;
           xmlns:xi=http://www.w3.org/2001/XInclude;
           py:strip=
         
         %s
         /html
          % (xml)
     return MarkupTemplate(tmpl).generate(get_url=get_url)

 db_string = 'a href=${get_url()}Widget/a'
 strTemplate = 
 html xmlns:py=http://genshi.edgewall.org/;
       xmlns:xi=http://www.w3.org/2001/XInclude;

     span py:replace=PreRender(db_string)/
 /html
 
 tmpl = MarkupTemplate(strTemplate)
 stream = tmpl.generate(db_string=db_string, PreRender=PreRender)
 output = stream.render('xhtml')
 print output
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Re: Dynamic Template Inclusion in Genshi

[jerry]

Thank you (for being the first one to reply to my question :).

I think what you meant was what can possibly be your problem querying
a DB?.
Well, there is no problem querying a DB -- either from inside the
template or not.
It's also trivial to do a --

${Markup(divThis string comes from the DB/div)}

to insert arbitrary literal XML markup fragments. However, I still
haven't figured
out a way to _process_ the Genshi sub-template string _from inside
another
Genshi template_, i.e., I want the following to come out as '''/
widget''' --

${_some_uber_magic_(h.url_for(controller='widget', action='index',
id=None))}

when dynamically included in another Genshi template.

Jerry

On Oct 7, 8:03 pm, EricHolmberg [EMAIL PROTECTED] wrote:
 Forgive me if I misunderstood, but couldn't you either query the DB
 before the template is run or simply query the DB in the template?
 Just put in the ${query code here} construct...

 -Eric
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Dynamic Template Inclusion in Genshi

[jerry]

Hi,

Sorry this is not a strict Pylons question, but I've got no answer
from the Genshi group for 2 days.

Question: How to dynamically include non-file templates in Genshi?

This is my master template --


?xml version=1.0 encoding=utf-8?
html xmlns=... xmlns:py=... xmlns:xi=...
  head /
  body
py:for each=widget_template in widget_templates
  xi:include href=[How to include widget_template here?] /
/py:for
  /body
/html


where widget_template is a _string_ retrieved from a database --


?xml version=1.0 encoding=utf-8?
div xmlns=... xmlns:py=... py:strip=True
  div
a href=${h.url_for(controller='...', action='...', id='...')}
  widget
/a
  /div
/div


Any pointer will be greatly appreciated.

Many thanks in advance!

Jerry
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Re: how to rename and deploy a pylons app?

[jerry]

Hi,

You don't rename your project, you name it anything and distribute
it (http://wiki.pylonshq.com/display/pylonsdocs/Distributing+Your
+Project), or add its absolute path (quick hack!) to your Python
distribution/site-packages/easy-install.pth

As for production deployment, there have been multiple related lengthy
threads in this group. Proxy passing (Nginx) to paster serve is
working fine for me.

Jerry

On Sep 22, 2:52 pm, wellhong [EMAIL PROTECTED] wrote:
 Hi all,

 I'm new to pylons and python web development. I've started working on
 an application on my workstation but:
 1. would like to know how to rename the app (since I had come up with
 a random name). i've tried searching for this but nothing comes up
 2. how to deploy an app to a production machine. i've gotten as far as
 just installing python 2.5 and mod_wsgi for apache 2. some of the
 examples aren't real clear as to some steps i should do next such as
 how to create the appropriate wsgi file to deploy the app and what
 not.

 also, has anyone done any comparisons as to which deployment scenario
 is the best? proxy pass? mod_wsgi? or fast cgi?

 Thanks!
 Dave
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Re: Cron jobs

[jerry]

I'm using No. 1, which I consider the (preferably only one) obvious
way.

No. 2 is too monkey-patching to me.

No. 3 is not really about auxiliary cron jobs for your application.

Jerry

On Sep 1, 7:17 am, Pavel Skvazh [EMAIL PROTECTED] wrote:
 There seam to be different ways to get cron jobs with Pylons.
 In my case model has to be accessible in it.
 Found three articles on the wiki describing different approaches,
 which is rather confusing

 http://wiki.pylonshq.com/display/pylonscookbook/Cron+jobs+and+command...http://wiki.pylonshq.com/display/pylonscookbook/Running+cron+jobshttp://wiki.pylonshq.com/display/pylonscookbook/Scripts+for+paster+serve

 If anyone, who had experience getting this done, can please share a
 best practice on this matter?

 Thanks!
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Re: expiring cookie based session after a preset amt of time

[jerry]

This is what I do:

set session['cookie_expires'] in login controller, then modify
session.cookie_expires accordingly in lib/base.py --

def __before__(self, action):
if not session.get('cookie_expires', True):
session.cookie_expires = False
else:
session.cookie_expires = True

Jerry

On 6 Jul, 23:42, kevin [EMAIL PROTECTED] wrote:
 hello all,

 thanks for the great help so far.  my first pylons project is going
 really well.

 i'm looking for a way to make the session/session cookie expire after
 a certain amount of time.  an example of this behavior would be eBay,
 which expires a cookie session after 24 hours.

 i was looking at 
 thishttp://wiki.pylonshq.com/display/beaker/Configuration+Options

 beaker.session.cookie_expires is probably what i want, but i am not
 sure how to set the time period in my .ini file.  i see that it's
 supposed to take a timedelta object, but i can't instantiate one
 within the context of a config file (can i?).  other docs i've seen
 only describe the session.cookie_expires option as only taking a
 boolean value.

 there's also beaker.session.timeout but that depends on the session
 being idle.

 am i missing something totally obvious?

 a follow-up to this question is, what's the proper way to implement
 the user's remember me preference checkbox.  these are global
 settings for the server, i have poked around looking for the answer on
 the user's ability to set session.cookie_expires to True (session goes
 away on the closing of the browser), but my keywordese isn't good
 enough.
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Re: How to update data with sqlalchemy

[jerry]

I suggest putting an import pdb; pdb.set_trace() before the execute
statement to inspect the type of WHChapter (and see for yourself that
it is incorrect :)

Jerry

On Jul 15, 1:12 pm, JOLINY [EMAIL PROTECTED] wrote:
 Since i develope my application with pylons ,i have this question.
 when i want to do the update action to database.
 i use this method like this:
 def delt(self,id):
 systemtime=h.getSystemTime()
 userid=session['USER_KEY'].wh_userid
 
 meta.Session.execute(wh_chapter.WHChapter.update(values={del_flg:'1',update_time:systemtime}))
 meta.Session.commit()
 return redirect_to('/ma003')
 there is an error like this:
 type 'exceptions.AttributeError': type object 'WHChapter' has no 
 attribute 'update'
 but i read the doc 
 inhttp://www.sqlalchemy.org/docs/05/sqlexpression.html#sql_updatehas the same 
 operate.

 I want to do this operation:
 update whchapter set del_flg='1', update_time=systemtime where 
 userid=001 and chapterid=0003
 who can tell me how to do it.

 thanks very much.

 joliny
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Re: How to pass (one-time) message to redirect_to page?

[jerry]

1. Thanks Mike, awesome!

2. messages stored in sessions mapped to a certain url -- I don't
get it.

3. Thanks Jonathan (and silly me for not knowing/being able to come up
with such a simple idea).

Sincerely,
Jerry

On Jul 10, 11:11 pm, Jonathan Vanasco [EMAIL PROTECTED] wrote:
 There are 3 ways:

 1- Use that new flash functionality.  neat.
 2- Do a session based message yourself.  I often have messages stored
 in sessions mapped to a certain url, and visiting that url will
 display + clear out.
 3- Have the redirect have an arg like ?success=1 or action=success

 As a rundown of the options.
 1. I don't know how flash works.  Mike will have to comment.
 2. I prefer this, because I get a bit of control and can do custom
 validation and actions by storing  retrieving info as i see fit.
 3- This is honestly the most popular version - every large webapp,
 social network, even sites like facebook google myspace all go for
 that route.  There's no sort of sessioning or validation, it just
 displays a standard 'success!' message on display.
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Re: Exposing database Id via URL

[jerry]

Thanks Jonthan.

However, I wonder how an md5 string can be squeezed into a 10, or even
6-character field with no concern of (future) collision -- or am I mis-
understanding your db schema?

Sincerely,
Jerry

On Jul 5, 1:57 pm, Jonathan Vanasco [EMAIL PROTECTED] wrote:
 On Jul 4, 8:58 pm, jerry [EMAIL PROTECTED] wrote:

  But how? What encryption/hashing method could be used to transform the
  numeric IDs to something less obvious?

 all my apps have somthing like this in the db:

 table hexkey_types
 id , len , name
 ---
 1, 10, useraccount:hex_id
 2, 6, group:hex_id
 3, 6, assetname:hex_id

 table hexkey
 hex_id primary, hexkey_type (fkey on hexkey_type(id))

 table useraccount
 id , hex_id fkey on hexkey10

 i just create random md5s whenever i make an entry into the db.

 when someone requests i record, i validate to make sure the hexid
 matches for the function ( are we requesting a 10char hex for a user?
 if so check memcached with db failover.  if not , then don't
 bother ).  storing a hex-to-numeric mapping  in memcached makes it
 really low-impact.  and no one knows what my internal mappings are.
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Re: Exposing database Id via URL

[jerry]

But how? What encryption/hashing method could be used to transform the
numeric IDs to something less obvious?

Sincerely,
Jerry

On Jul 4, 2:01 pm, Jonathan Vanasco [EMAIL PROTECTED] wrote:
 just some points on 'hiding' ids-

 - if you're doing a social media site, with numeric ids your
 competitors and the annoying industry blogs will be judging and
 guaging your popularity and success by sequence ids

 - by using the ids, you're good on a pylons app... but lets say you
 need to offload something onto php or another system accesses the same
 database -- one that is not hardened against sql injection attacks.
 you have now exposed your ids - which are fkeys and indexes - to the
 public through pylons and have a vulnerability elsewhere.  the
 security risk might not be in pylons, but you've opened the door for
 abuse on your db through other apps.

 our practice has needed us to ensure security to clients, and i'm sick
 of reading bloggers judging the success of sites based on sequence
 numbers and not on the  spirit and activity of the active members.  so
 we hide that, and in all companies i consult to, i insist that they
 hide numeric ids on everything.
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Re: How to pass image?

[jerry]

class ImageController(BaseController):
def view(self):
image_content = binary data of your (generated) image /
app = DataApp(image_content, content_type='image/jpeg')
app.content_disposition(filename='%s.jpg' % image_name)
return app(request.environ, self.start_response)

Jerry

On Jun 3, 5:05 pm, deezee [EMAIL PROTECTED] wrote:
 Hello everybody!
 I'm pretty new in Pylons world - today i downloaded and installed
 software. So, some stupid question:

 How to send (simplest way) image from PIL to template  (browser)
 without saving file?
 I'm playing around helloworld sample, but i want to see picture
 instead of text. I can generate one by PIL, and send by c.image, but
 till now i just have PIL.Image.. marker, no image itself.
 In PHP it's quite simple, don't believe something newer is more
 complicated..

 Ł
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Re: How to pass image?

[jerry]

from paste.fileapp import DataApp

Jerry

On Jun 3, 8:38 pm, jerry [EMAIL PROTECTED] wrote:
 class ImageController(BaseController):
 def view(self):
 image_content = binary data of your (generated) image /
 app = DataApp(image_content, content_type='image/jpeg')
 app.content_disposition(filename='%s.jpg' % image_name)
 return app(request.environ, self.start_response)

 Jerry

 On Jun 3, 5:05 pm, deezee [EMAIL PROTECTED] wrote: Hello everybody!
  I'm pretty new in Pylons world - today i downloaded and installed
  software. So, some stupid question:

  How to send (simplest way) image from PIL to template  (browser)
  without saving file?
  I'm playing around helloworld sample, but i want to see picture
  instead of text. I can generate one by PIL, and send by c.image, but
  till now i just have PIL.Image.. marker, no image itself.
  In PHP it's quite simple, don't believe something newer is more
  complicated..

  Ł
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Re: Controller name

[jerry]

Hi Mike,

c.controller auto-assignment doesn't seem to be implemented in
Routes1.8 --

(Pdb)  list
 22 def index(self):
 23 import pdb; pdb.set_trace()
 24  - #c.url_for_action = 'index'
(Pdb) !c.controller
16:15:01,505 DEBUG [pylons.util] No attribute called controller found
on c object, returning empty string
''

Jerry

On May 28, 11:30 am, Mike Orr [EMAIL PROTECTED] wrote:
 On Wed, May 28, 2008 at 3:50 AM, Christoph Haas [EMAIL PROTECTED] wrote:
  Hi, Antonia...

  first of all: please don't hijack threads. Start a new thread if you want
  to post to this list. Don't just reply to a random posting.

  On Mittwoch, 28. Mai 2008, Antonio Beamud Montero wrote:
  How I can get the controller name in the actual template context. For
  example, a site.mako template used by several controllers, I want to
  show the controller name with something like this:

  ${c.name}

  It's possible or I must define a property for every controller with it's
  name?

  The routes dictionary contains the information you are after:

 request.environ['pylons.routes_dict']

  You cann add a def __before__(self) in the lib/base.py and fill a
  template variable with it to be used in the templates:

 c.routes = request.environ['pylons.routes_dict']

  That would allows you to access the current controller's name in the
  template as:

 ${c.routes['controller']}

 Actually, it's easier than that:  ${c.controller}

 Routing variables are automatically added to 'c'.

 --
 Mike Orr [EMAIL PROTECTED]
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Paste unquote/unquote_plus Question

[jerry]

Michi's post (http://groups.google.com/group/pylons-discuss/msg/
325fedbbd2bc8163) repackaged (Let's see if we can attract Ian's
attention :)


I recently posted this message:

http://groups.google.com/group/pylons-discuss/msg/fa8507fbb7ea6173

I think the issue is webhelper uses quote_plus to encode url while
Paste uses unquote to decode url. So 1 + 1 gets encoded to 1+%2b+1
and it gets decoded to 1+++1. Is there any particular reason Paste
doesn't use unquote_plus?

Thanks!
--Michi


Jerry
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Routes (1.8) quote_plus issue?

[jerry]

Hi (Ben, Mike :),

First of all, excuse me for not digging into the issue deeply enough
myself (will do that when I reach home.)

Routes 1.8 takes a href=/one+%2B+oneone + one/a and passes to my
controller the undesirable id u'one+++one'

I did notice from a quick grep through my site-packages/ that there
are only a few quote_plus with no unquote_plus --

~/lib/python2.5/site-packages$ grep --include=*.py -r quote_plus . |
egrep -i paste|pylons|routes
./Routes-1.8-py2.5.egg/routes/util.py:A Unicode handling
version of urllib.quote_plus.
./Routes-1.8-py2.5.egg/routes/util.py:return urllib.quote_plus(s,
'/')
./Routes-1.8-py2.5.egg/routes/util.py:
urllib.quote_plus(unicode(key).encode(encoding)),
./Routes-1.8-py2.5.egg/routes/util.py:
urllib.quote_plus(unicode(value).encode(encoding
./Routes-1.8-py2.5.egg/routes/util.py:
urllib.quote_plus(unicode(key).encode(encoding)),
./Routes-1.8-py2.5.egg/routes/util.py:
urllib.quote_plus(unicode(val).encode(encoding

Could that be a (known) Routes bug?

Many thanks in advance!

Jerry
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Re: url_for() constrcut URL with MultiDict parameters?

[jerry]

Hi Mike,

Thanks for the response.

I mentioned MultiDict as a convenient term to convey the idea in my
question, not that I know or thought it would help with the
implementation.

As for the demand, I have a form with a list of checkbox input items
for viewing the details of selected one(s). The receiving controller
will naturally have multi-parameter URL like /details?q=1q=2 . Now I
want to further enable adding more items in the details viewing list
and need to have another form with probably hidden input items q=1 and
q=2, finally when paging is involved for this form, the pager links
will have to inherit the information of the existing parameters
q=1q=2, hence the demand.

However, it really doesn't seem to be an appealing design and I think
I'm probably better off sticking with the more RESTful URL like
details/1;2

Cheers,
Jerry

On Apr 29, 12:38 am, Mike Orr [EMAIL PROTECTED] wrote:
 On Mon, Apr 28, 2008 at 6:19 PM, jerry [EMAIL PROTECTED] wrote:
   Is there a way to construct URLs like /controller/action/id?
   q=1q=2 with url_for()?

 I don't think so.  If there's demand for this we can turn a list of
 values into multiple parameters.  Does MultiDict offer anything that
 would help with this?

 --
 Mike Orr [EMAIL PROTECTED]
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url_for() constrcut URL with MultiDict parameters?

[jerry]

Hi,

Is there a way to construct URLs like /controller/action/id?
q=1q=2 with url_for()?

Thanks in advance!

Jerry
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Missing nose version on the cheeseshop breaks pylons

[Jerry Seutter]

Hi,

I just tried installing Pylons using the directions on the Pylons
website - it failed because nose version 0.9.2 is no longer available
on the cheeseshop, and Pylons requires a nose version between 0.9.2
and 0.9.9.  Is there any chance you can put this version back up on
the cheeseshop?  I have the file in case you need it.

Thanks,

Jerry Seutter


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