Re: django storage chinese failed to mysql!!

[Dennis Kaarsemaker]

On wo, 2010-07-28 at 09:11 +0800, pengbo xue wrote:
> hi all,
>  
> I can register from my django web page in english,but it can't storage
> chinese to django mysql database.
> 
> please give me advice.  thx

Check your table definition to see whether the field you try to store is
a latin1 or utf8 field. If it is latin1, it will not support chinese
characters.

-- 
Dennis K.

They've gone to plaid!

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implementing next and previous of the object

[haibin]

Hi all,

Need help, advice on how the have a next and previous link on a object
detail page. For example fomr a object list page a user chose an
object, and in the object page instead of going back to the list to
view other object the user just click either next or previous.

Any idea how to implement it?

Thanks,
James

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private models and inheriting model permission?

[Jamie]

Hi all,

I'm new to Django and Python. I have a small project I want to tackle
and was after some advice on where to start.

Simply the project will be a site to manage 'Projects' and their
associated 'Tasks', however each project and their related tasks
should be private (authenticated users can only see the tasks for the
projects they have access to).

Use Case:
Prerequisites:
 - Three projects, "Project A", "Project B" and "Project C" exist.
 - Three groups, "Project A", "Project B" and "Project C" exist.
 - One user, "User A" exists and is assigned to the group "Project A"
and "Project C"

Scenario 1:
 1. 'User A' logs in to site, clicks "my projects", 'Project A' and
'Project C' is listed.
 2. 'User A' clicks "new task" and new task form is loaded.
 3. 'User A' adds a task "Title", selects the "Project" combo and
selects 'Project A' from a choice of 'Project A' and 'Project C'.
'User A' clicks 'Submit'.
 4. 'User A' selects "show all tasks", tasks for 'Project A' and
'Project C' only are shown.

What have I done so far:
Basically I have done the easy stuff. I have a Project model and a
Task model. At the moment any new task can be created against any
project (no security in place).

Where should I start? I've looked around for a app which does this but
haven't had any luck. Perhaps i'm not using the correct keywords to
find the right answer?

Any help of advice you could provide will be very helpful, and much
appreciated.

Cheers,

Jamie

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Re: HTTP POST sent from app to Django Server returns 403 Forbidden

[Kieran Farr]

Finally figured out what's going on.

My hypothesis:
An HTTP request with POST method sent to a Django view wrapped with
@csrf_exempt will still raise a 403 CSRF error if the wrapped view
raises an Http404 exception.

In this specific case, we raise 404 when there is no valid video_id
passed in the POST request:
264 # Make sure there's at least one
265 if len(distro_list) < 1:
266 raise Http404

Raising a 403 was obviously not the result behavior we expected,
instead we would have expected the 404 to be raised without CSRF
interfering given the initial view was properly wrapped with
@csrf_exempt. Further contributing, this was rather difficult to
diagnose due to the opaque 403 error message even when DEBUG = True.

Is this expected Django behavior? If not, can we please address this
in a future release?

Is there a better way to provide debugging information for 403 errors
raised from the built-in CSRF methods?

All the best and thanks for a great framework.

Kieran

On Jul 27, 6:54 pm, Kieran Farr  wrote:
> Further research shows that CSRF is enabled regardless of my
> settings.py if we use Django's built-in auth.
>
> Obviously, we need to still use Django's auth, so we can't just
> disable CSRF site-wide like this 
> hack:http://stackoverflow.com/questions/1650941/django-csrf-framework-cann...
> ...or this hack...http://djangosnippets.org/snippets/2069/
>
> Obviously also, we have no control over the third-party server sending
> the POST request, so we can't resort to this 
> hack:http://stackoverflow.com/questions/2405353/having-a-postable-api-and-...
>
> The decorator @csrf_exempt does not work as described in the docs as
> our view always returns a 403 when any content is POSTed.
>
> Very confusing!
>
> Kieran
>
> On Jul 27, 1:32 pm, Kieran Farr  wrote:
>
>
>
> > Raj sorry I misread your question. This initial response is in re: my
> > listener.
>
> > The "sender" of this POST request is a third party server that we have
> > no control over.
>
> > However, even when debugging with wget we receive the 403.
>
> > Here is the wget command I've been testing with:
>
> > $ wgethttp://www.url.com/subdir/listener/--post-data"?test=test; -U
> > "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/
> > 533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16"
>
> > --2010-07-27 20:06:36--  http://www.url.com/subdir/listener/
> > Resolving [URL] ... [IP ADDRESS]
> > Connecting to [URL]|[IP ADDRESS]|:80... connected.
> > HTTP request sent, awaiting response... 403 Forbidden
> > 2010-07-27 20:06:37 ERROR 403: Forbidden.
>
> > However, if I send without the post-data, here's the response:
>
> > $ wgethttp://www.url.com/subdir/listener/
>
> > --2010-07-27 20:31:14--  http://www.url.com/subdir/listener/
> > Resolving [URL]... [IP ADDRESS]
> > Connecting to [URL|[IP ADDRESS]|:80... connected.
> > HTTP request sent, awaiting response... 200 OK
> > Length: unspecified [text/plain]
> > Saving to: `index.html.1'
>
> > [ <=>                                                                       
> >                                                             ]
> > 27          --.-K/s   in 0s
>
> > 2010-07-27 20:31:14 (1.84 MB/s) - `index.html.1' saved [27]
>
> > On Jul 27, 11:34 am, Kieran Farr  wrote:
>
> > > This is intended not to be protected by auth, so this page is publicly
> > > accessible, no login required.
>
> > > Here's the function in its entirety:
>
> > > 255 @csrf_response_exempt
> > > 256 def DistroHeySpreadListener(request):
> > > 257         if request.method == 'POST':
> > > 258                 post = request.POST
> > > 259                 raw = request.raw_post_data
> > > 260                 remote_media_id = post.get("video_id", "")
> > > 261                 # Try to fetch the distros for this
> > > remote_media_id
> > > 262                 distro_list =
> > > Distro.objects.filter(remote_media_id__exact=remote_media_id)
> > > 263
> > > 264                 # Make sure there's at least one
> > > 265                 if len(distro_list) < 1:
> > > 266                         raise Http404
> > > 267
> > > 268                 # For each distro instance, check to see if
> > > there's a response in this api call
> > > 269                 for distro in distro_list:
> > > 270                         # Prepare logging
> > > 271                         log = distro.log
> > > 272                         log += "Raw data from POST" + str(raw)
> > > 273                         distro.log = log
> > > 274                         distro.save()
> > > 275
> > > 276                         # Get distro short name
> > > 277                         dest_short_name =
> > > distro.credential.destination.short_name
> > > 278
> > > 279                         # From short_name, return either error or
> > > link starting with http://
> > > 280                         response = 

Re: how to debug restful django apps?

[berto]

Do you have access to the Django app?  Can you set settings.DEBUG =
True to get the full traceback?  If you set the ADMINS tuple in the
settings you also can get an email with the traceback when DEBUG =
False.  The email backend can also be configured with the
EMAIL_BACKENDS setting, so you can, for example, write to a log file
instead [1].

Hope this helps,
-Roberto.

[1] http://docs.djangoproject.com/en/dev/topics/email/#e-mail-backends

On Jul 27, 2:06 am, ff  wrote:
> I have a python script that creates and then uploads a file to a
> django app. Sometimes the django app will error out and my script will
> just return this:
>
> Traceback (most recent call last):
>   File "/home/chris/bin/upload.py", line 318, in 
>     send_request(tmpzip, var1, var2, options.meta, url)
>   File "/srv/the_system/scripts/multipart.py", line 89, in
> send_request
>     print urllib2.urlopen(request).read()
>   File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
>     return _opener.open(url, data, timeout)
>   File "/usr/lib/python2.6/urllib2.py", line 397, in open
>     response = meth(req, response)
>   File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
>     'http', request, response, code, msg, hdrs)
>   File "/usr/lib/python2.6/urllib2.py", line 435, in error
>     return self._call_chain(*args)
>   File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
>     result = func(*args)
>   File "/usr/lib/python2.6/urllib2.py", line 518, in
> http_error_default
>     raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
> urllib2.HTTPError: HTTP Error 500: INTERNAL SERVER ERROR
>
> Its very hard to pinpoint what exactly went wrong with just a big
> "ERROR 500" message...
>
> Does anyone have any tips on how to get the full fancy traceback when
> interfacing with a django app in this way?

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Re: HTTP POST sent from app to Django Server returns 403 Forbidden

[Kieran Farr]

Further research shows that CSRF is enabled regardless of my
settings.py if we use Django's built-in auth.

Obviously, we need to still use Django's auth, so we can't just
disable CSRF site-wide like this hack:
http://stackoverflow.com/questions/1650941/django-csrf-framework-cannot-be-disabled-and-is-breaking-my-site
...or this hack...
http://djangosnippets.org/snippets/2069/

Obviously also, we have no control over the third-party server sending
the POST request, so we can't resort to this hack:
http://stackoverflow.com/questions/2405353/having-a-postable-api-and-djangos-csrf-middleware

The decorator @csrf_exempt does not work as described in the docs as
our view always returns a 403 when any content is POSTed.

Very confusing!

Kieran


On Jul 27, 1:32 pm, Kieran Farr  wrote:
> Raj sorry I misread your question. This initial response is in re: my
> listener.
>
> The "sender" of this POST request is a third party server that we have
> no control over.
>
> However, even when debugging with wget we receive the 403.
>
> Here is the wget command I've been testing with:
>
> $ wgethttp://www.url.com/subdir/listener/--post-data "?test=test" -U
> "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/
> 533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16"
>
> --2010-07-27 20:06:36--  http://www.url.com/subdir/listener/
> Resolving [URL] ... [IP ADDRESS]
> Connecting to [URL]|[IP ADDRESS]|:80... connected.
> HTTP request sent, awaiting response... 403 Forbidden
> 2010-07-27 20:06:37 ERROR 403: Forbidden.
>
> However, if I send without the post-data, here's the response:
>
> $ wgethttp://www.url.com/subdir/listener/
>
> --2010-07-27 20:31:14--  http://www.url.com/subdir/listener/
> Resolving [URL]... [IP ADDRESS]
> Connecting to [URL|[IP ADDRESS]|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: unspecified [text/plain]
> Saving to: `index.html.1'
>
> [ <=>                                                                         
>                                                           ]
> 27          --.-K/s   in 0s
>
> 2010-07-27 20:31:14 (1.84 MB/s) - `index.html.1' saved [27]
>
> On Jul 27, 11:34 am, Kieran Farr  wrote:
>
>
>
> > This is intended not to be protected by auth, so this page is publicly
> > accessible, no login required.
>
> > Here's the function in its entirety:
>
> > 255 @csrf_response_exempt
> > 256 def DistroHeySpreadListener(request):
> > 257         if request.method == 'POST':
> > 258                 post = request.POST
> > 259                 raw = request.raw_post_data
> > 260                 remote_media_id = post.get("video_id", "")
> > 261                 # Try to fetch the distros for this
> > remote_media_id
> > 262                 distro_list =
> > Distro.objects.filter(remote_media_id__exact=remote_media_id)
> > 263
> > 264                 # Make sure there's at least one
> > 265                 if len(distro_list) < 1:
> > 266                         raise Http404
> > 267
> > 268                 # For each distro instance, check to see if
> > there's a response in this api call
> > 269                 for distro in distro_list:
> > 270                         # Prepare logging
> > 271                         log = distro.log
> > 272                         log += "Raw data from POST" + str(raw)
> > 273                         distro.log = log
> > 274                         distro.save()
> > 275
> > 276                         # Get distro short name
> > 277                         dest_short_name =
> > distro.credential.destination.short_name
> > 278
> > 279                         # From short_name, return either error or
> > link starting with http://
> > 280                         response = post.get('link[%s]' %
> > dest_short_name, False) or post.get('error[%s]' % dest_short_name,
> > False)
> > 281
> > 282                         if response.startswith('http://'):
> > 283                                 # If response starts with http
> > then success, populate as link
> > 284                                 distro.destination_url = response
> > 285                                 distro.state = TRANSCODE_SUCCESS
> > 286                                 log += '\nSUCCESS, url = %s' %
> > response
> > 287                         else:
> > 288                                 # Else, change state to error and
> > log error message
> > 289                                 log += '\nERROR, error = %s' %
> > response
> > 290                                 distro.state = TRANSCODE_ERROR
> > 291
> > 292                         distro.log = log
> > 293                         distro.save()
> > 294
> > 295
> > 296                 h = HttpResponse("Thanks, HeySpread! We love
> > you.", mimetype="text/plain", status=200)
> > 297                 h.csrf_exempt = True
> > 298                 return h
> > 299 #               return HttpResponse("Thanks, HeySpread! We love
> > you.", 

updating admin values with other fields

[Nick]

I have a save override in my admin file that catches a value from one
field and applies it to another. The values it grabs from a manytomany
field.

I can get it to work, but only when I save twice. It looks like it
needs the manytomany to update with the new values and then it needs
to second save to assigne the values to the other field.

Here is the method override:

 def save_model(self, request, obj, form, change):
obj.primary_winner_r = obj.primary_advance_r.values_list('id',
flat=True)
obj.primary_winner_d = obj.primary_advance_d.values_list('id',
flat=True)
obj.primary_winner_np =
obj.primary_advance_np.values_list('id', flat=True)
obj.save()

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django storage chinese failed to mysql!!

[pengbo xue]

hi all,

I can register from my django web page in english,but it can't storage
chinese to django mysql database.
please give me advice.  thx
-- 

cowboy

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testing with multiple databases

[berto]

Hello Djangonauts,

I am using django in an application that has multiple distinct
databases, each with unique data (i.e. not master/slave type
configuration).  I've created an app (django-admin.py startapp) for
each database and the settings.py defines DATABASE_ROUTERS where I
specify what database a table belongs in depending on the application
a model is in.  This configuration has a few bumps when testing.

First, loading fixture data into a database other than the default,
does not work with the 'fixtures' list in a TestCase.  I tracked the
problem down to the fixtures only being loaded into the default
database.  If the fixture is for data in another database, no go.  I
believed I was clever by adding the following to my TestCase's setUp()
function:

management.call_command('loaddata', 'mydata.json',
database='otherdb', verbosity=0)

Then I ran into a problem where databases other than the default are
not cleared per test.  Subsequent tests are failing due to additional
data being in the database already.

Is there something I am doing wrong?

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[ot] good practices questions, using django

[Felippe Bueno]

Hello Guys,

I'm relatively new to django.

I have some doubt about good practices,  using it.

1 - I have some helpers that I use on all apps.
For this I created a app called helpers
(./manager.py startapp helpers)
it don't have any view, or model.
And then I  created some files like:
misc.py
choices.py
use.py

and inside choices.py I have for example:
from content.models import Publication, Issue, Article, Comment, Image
OBJ_HANDLER = {
'publication': Publication,
'issue': Issue,
'article': Article,
'comment': Comment,
'image': Image,
}

PERMISSION_CHOICES = (
(0, 'None'),
(1, 'Read/Comment'),
(2, 'Edit/Comment'),
(4, 'Read'),
)

Is it ok, if I create 'empty' apps, like that ?

2 - There are some commands that I like to think that I will always use:
for example:
add, remove, view, edit and browse
For that I created a file (handlers.py) insie my app (content)
And I use like this:
content/urls.py:
urlpatterns = patterns('',
(r'^browse/(?P.*)/(?P.*)/', 'content.views.browse'),
(r'^(?P.*)/(?P.*)/(?P.*)/(.*)', 'content.handlers.url'),
)

content/handlers.py:
import views
def url(request, cmd, obj, key=0):
f_name = obj+ '_' +cmd
call = getattr(views, f_name.lower())
return call(request, key)

content/views.py:
def publication_edit(request, key):
do_something()

So, I can use:
/content/edit/publication//

Is it ok, if I create other files in the app's directory, like this ?
(I have a file called 'forms' too).

3 - Is there any problem if I use the OBJ_HANDLER (from
helpers/choices.py) like this:?
entries_list = OBJ_HANDLER[obj].objects.all().filter('public =', True)

4 - I have a form that has a create() method.
class IssueForm(djangoforms.ModelForm):
#... code
def create(self, data):
return Issue(publication = data['publication']).save()


Is it ok  if I return saved objects in forms ?

Is all of this, or some of this, good practices ?

Thank you a lot :)

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File sharing service on Django?

[Artem]

Is there any painless way to make Django able to serve files with one-
time urls, like in RapidShare?
First thought - use django.views.static.serve with some tweeks. But is
there a way to track status of download (dropped\complited)?

Thanks

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Re: MySQL error -1

[Dennis Kaarsemaker]

On di, 2010-07-27 at 13:49 -0700, shacker wrote:
> On Jul 27, 3:10 am, Dennis Kaarsemaker  wrote:
> 
> >
> > Start with checking/repairing the table that causes this error to be
> > thrown.
> 
> All tables analyzed, optimized, and repaired. No errors found. But the
> " error -1 from storage engine" reports continue a few minutes later
> (not for every page request - just a dozen or so per day, but I know
> those users are being served 500 pages and would like to get to the
> bottom of it).

Are the tracebacks all the same? Can you share a traceback?

-- 
Dennis K.

They've gone to plaid!

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Re: MySQL error -1

[shacker]

On Jul 27, 3:10 am, Dennis Kaarsemaker  wrote:

>
> Start with checking/repairing the table that causes this error to be
> thrown.

All tables analyzed, optimized, and repaired. No errors found. But the
" error -1 from storage engine" reports continue a few minutes later
(not for every page request - just a dozen or so per day, but I know
those users are being served 500 pages and would like to get to the
bottom of it).

Thanks,
Scot

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Re: HTTP POST sent from app to Django Server returns 403 Forbidden

[Kieran Farr]

Raj sorry I misread your question. This initial response is in re: my
listener.

The "sender" of this POST request is a third party server that we have
no control over.

However, even when debugging with wget we receive the 403.

Here is the wget command I've been testing with:

$ wget http://www.url.com/subdir/listener/ --post-data "?test=test" -U
"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_4; en-us) AppleWebKit/
533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16"

--2010-07-27 20:06:36--  http://www.url.com/subdir/listener/
Resolving [URL] ... [IP ADDRESS]
Connecting to [URL]|[IP ADDRESS]|:80... connected.
HTTP request sent, awaiting response... 403 Forbidden
2010-07-27 20:06:37 ERROR 403: Forbidden.

However, if I send without the post-data, here's the response:

$ wget http://www.url.com/subdir/listener/

--2010-07-27 20:31:14--  http://www.url.com/subdir/listener/
Resolving [URL]... [IP ADDRESS]
Connecting to [URL|[IP ADDRESS]|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/plain]
Saving to: `index.html.1'

 
[ <=>   
]
27  --.-K/s   in 0s

2010-07-27 20:31:14 (1.84 MB/s) - `index.html.1' saved [27]



On Jul 27, 11:34 am, Kieran Farr  wrote:
> This is intended not to be protected by auth, so this page is publicly
> accessible, no login required.
>
> Here's the function in its entirety:
>
> 255 @csrf_response_exempt
> 256 def DistroHeySpreadListener(request):
> 257         if request.method == 'POST':
> 258                 post = request.POST
> 259                 raw = request.raw_post_data
> 260                 remote_media_id = post.get("video_id", "")
> 261                 # Try to fetch the distros for this
> remote_media_id
> 262                 distro_list =
> Distro.objects.filter(remote_media_id__exact=remote_media_id)
> 263
> 264                 # Make sure there's at least one
> 265                 if len(distro_list) < 1:
> 266                         raise Http404
> 267
> 268                 # For each distro instance, check to see if
> there's a response in this api call
> 269                 for distro in distro_list:
> 270                         # Prepare logging
> 271                         log = distro.log
> 272                         log += "Raw data from POST" + str(raw)
> 273                         distro.log = log
> 274                         distro.save()
> 275
> 276                         # Get distro short name
> 277                         dest_short_name =
> distro.credential.destination.short_name
> 278
> 279                         # From short_name, return either error or
> link starting with http://
> 280                         response = post.get('link[%s]' %
> dest_short_name, False) or post.get('error[%s]' % dest_short_name,
> False)
> 281
> 282                         if response.startswith('http://'):
> 283                                 # If response starts with http
> then success, populate as link
> 284                                 distro.destination_url = response
> 285                                 distro.state = TRANSCODE_SUCCESS
> 286                                 log += '\nSUCCESS, url = %s' %
> response
> 287                         else:
> 288                                 # Else, change state to error and
> log error message
> 289                                 log += '\nERROR, error = %s' %
> response
> 290                                 distro.state = TRANSCODE_ERROR
> 291
> 292                         distro.log = log
> 293                         distro.save()
> 294
> 295
> 296                 h = HttpResponse("Thanks, HeySpread! We love
> you.", mimetype="text/plain", status=200)
> 297                 h.csrf_exempt = True
> 298                 return h
> 299 #               return HttpResponse("Thanks, HeySpread! We love
> you.", mimetype="text/plain", status=200)
> 300         else:
> 301                 return HttpResponse("Oops, something went wrong.",
> mimetype="text/plain", status=200)
>
> On Jul 27, 11:30 am, raj  wrote:
>
>
>
> > Most probably it has something to do with permissions. Go thru the
> > exact code block which tries to post the data. Is the login successful
> > and does the logged-in user have got all necessary permissions
> > required? Post that part of the code if you can't find out.
>
> > Rajeesh.
>
> > On Jul 27, 11:20 pm, Kieran Farr  wrote:
>
> > > Further, debugging 403s is nearly impossible. It'd be very helpful
> > > when in DEBUG mode to reveal who/what/why raised the 403.
>
> > > > What am I doing wrong/missing?

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Re: save a values_list to a charfield

[Nick]

It is a bit of a last minute deal and will be changed after today, but
we had a handful of "improvements" handed down to us from management
and this was the fastest thing we could come up with using some old
mysql query logic and several already built templates for output.

I appreciate the help.

On Jul 27, 2:49 pm, ringemup  wrote:
> ', '.join(primary_ids)
>
> The fact that you're doing this with foreign keys, though, suggests to
> me that you may have a database normalization problem.
>
> On Jul 27, 3:26 pm, Nick  wrote:
>
> > I am getting this to save but I can't get it to output properly
>
> > it's outputting as [16L, 451L, 521L] for a list of id's, which it
> > should according to documentation.  However, how can I output it like
> > this 16, 451, 521
>
> > On Jul 27, 12:11 pm, Nick  wrote:
>
> > > I am needing to do some duct taping for a project that is going on
> > > right now. In it I need to take a values_list of id's from a
> > > ManyToMany field and save those values to a varchar field so a mysql
> > > query can access the values. I am working with two different sets of
> > > developers and this is the best we can come up with in such a short
> > > period of time
>
> > > Here is the model:
>
> > > Candidate
> > >     filing_id = models.IntegerField()
> > >     name = models.CharField()
>
> > > Race:
> > >     name = models.CharField()
> > >     primary_advance = models.ManyToManyField('Candidate')
> > >     primary_advnace_list = models.CahrField()
>
> > >     def(save, *args, **kwargs):
> > >         primary_ids = self.primary_advace.values_list('id', flat=True)
> > >         if primary_ids.count() > 0:
> > >             primary_advance_list = primary_ids
> > >         else:
> > >             primary_advance_list = []
> > >         super(Race, self).save(*args, **kwargs)
>
> > > I've tried this but I'm coming back with empty values for the list
> > > fields.

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Re: save a values_list to a charfield

[ringemup]

', '.join(primary_ids)

The fact that you're doing this with foreign keys, though, suggests to
me that you may have a database normalization problem.

On Jul 27, 3:26 pm, Nick  wrote:
> I am getting this to save but I can't get it to output properly
>
> it's outputting as [16L, 451L, 521L] for a list of id's, which it
> should according to documentation.  However, how can I output it like
> this 16, 451, 521
>
> On Jul 27, 12:11 pm, Nick  wrote:
>
> > I am needing to do some duct taping for a project that is going on
> > right now. In it I need to take a values_list of id's from a
> > ManyToMany field and save those values to a varchar field so a mysql
> > query can access the values. I am working with two different sets of
> > developers and this is the best we can come up with in such a short
> > period of time
>
> > Here is the model:
>
> > Candidate
> >     filing_id = models.IntegerField()
> >     name = models.CharField()
>
> > Race:
> >     name = models.CharField()
> >     primary_advance = models.ManyToManyField('Candidate')
> >     primary_advnace_list = models.CahrField()
>
> >     def(save, *args, **kwargs):
> >         primary_ids = self.primary_advace.values_list('id', flat=True)
> >         if primary_ids.count() > 0:
> >             primary_advance_list = primary_ids
> >         else:
> >             primary_advance_list = []
> >         super(Race, self).save(*args, **kwargs)
>
> > I've tried this but I'm coming back with empty values for the list
> > fields.
>
>

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Re: save a values_list to a charfield

[Nick]

I am getting this to save but I can't get it to output properly

it's outputting as [16L, 451L, 521L] for a list of id's, which it
should according to documentation.  However, how can I output it like
this 16, 451, 521

On Jul 27, 12:11 pm, Nick  wrote:
> I am needing to do some duct taping for a project that is going on
> right now. In it I need to take a values_list of id's from a
> ManyToMany field and save those values to a varchar field so a mysql
> query can access the values. I am working with two different sets of
> developers and this is the best we can come up with in such a short
> period of time
>
> Here is the model:
>
> Candidate
>     filing_id = models.IntegerField()
>     name = models.CharField()
>
> Race:
>     name = models.CharField()
>     primary_advance = models.ManyToManyField('Candidate')
>     primary_advnace_list = models.CahrField()
>
>     def(save, *args, **kwargs):
>         primary_ids = self.primary_advace.values_list('id', flat=True)
>         if primary_ids.count() > 0:
>             primary_advance_list = primary_ids
>         else:
>             primary_advance_list = []
>         super(Race, self).save(*args, **kwargs)
>
> I've tried this but I'm coming back with empty values for the list
> fields.

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Re: HTTP POST sent from app to Django Server returns 403 Forbidden

[Kieran Farr]

This is intended not to be protected by auth, so this page is publicly
accessible, no login required.

Here's the function in its entirety:

255 @csrf_response_exempt
256 def DistroHeySpreadListener(request):
257 if request.method == 'POST':
258 post = request.POST
259 raw = request.raw_post_data
260 remote_media_id = post.get("video_id", "")
261 # Try to fetch the distros for this
remote_media_id
262 distro_list =
Distro.objects.filter(remote_media_id__exact=remote_media_id)
263
264 # Make sure there's at least one
265 if len(distro_list) < 1:
266 raise Http404
267
268 # For each distro instance, check to see if
there's a response in this api call
269 for distro in distro_list:
270 # Prepare logging
271 log = distro.log
272 log += "Raw data from POST" + str(raw)
273 distro.log = log
274 distro.save()
275
276 # Get distro short name
277 dest_short_name =
distro.credential.destination.short_name
278
279 # From short_name, return either error or
link starting with http://
280 response = post.get('link[%s]' %
dest_short_name, False) or post.get('error[%s]' % dest_short_name,
False)
281
282 if response.startswith('http://'):
283 # If response starts with http
then success, populate as link
284 distro.destination_url = response
285 distro.state = TRANSCODE_SUCCESS
286 log += '\nSUCCESS, url = %s' %
response
287 else:
288 # Else, change state to error and
log error message
289 log += '\nERROR, error = %s' %
response
290 distro.state = TRANSCODE_ERROR
291
292 distro.log = log
293 distro.save()
294
295
296 h = HttpResponse("Thanks, HeySpread! We love
you.", mimetype="text/plain", status=200)
297 h.csrf_exempt = True
298 return h
299 #   return HttpResponse("Thanks, HeySpread! We love
you.", mimetype="text/plain", status=200)
300 else:
301 return HttpResponse("Oops, something went wrong.",
mimetype="text/plain", status=200)


On Jul 27, 11:30 am, raj  wrote:
> Most probably it has something to do with permissions. Go thru the
> exact code block which tries to post the data. Is the login successful
> and does the logged-in user have got all necessary permissions
> required? Post that part of the code if you can't find out.
>
> Rajeesh.
>
> On Jul 27, 11:20 pm, Kieran Farr  wrote:
>
>
>
> > Further, debugging 403s is nearly impossible. It'd be very helpful
> > when in DEBUG mode to reveal who/what/why raised the 403.
>
> > > What am I doing wrong/missing?

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Re: HTTP POST sent from app to Django Server returns 403 Forbidden

[raj]

Most probably it has something to do with permissions. Go thru the
exact code block which tries to post the data. Is the login successful
and does the logged-in user have got all necessary permissions
required? Post that part of the code if you can't find out.

Rajeesh.

On Jul 27, 11:20 pm, Kieran Farr  wrote:

> Further, debugging 403s is nearly impossible. It'd be very helpful
> when in DEBUG mode to reveal who/what/why raised the 403.
>

> > What am I doing wrong/missing?

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Re: HTTP POST sent from app to Django Server returns 403 Forbidden

[Kieran Farr]

Hi, were having the exact same problem.

We're integrating with a third-party API that sends "pings" via simple
POST requests to our server to give us updates re: status video
conversion processes.

We're running Django 1.2.1 with Apache mod_python on Ubuntu 9.04.

I've disabled ALL csrf related middleware for debugging purposes in
settings.py, although we'll want that enabled on production.

I've been attempting to debug with wget. When I hit the listener URL,
it works fine if no post data is sent. However, as soon as I add the --
post-data tag with ANY text, a 403 is always returned.

Even tried @csrf_exempt and @csrf_response_exempt AND adding
csrf_exempt = True to the response object.

This is quite frustrating as we're following all the docs for
disabling CSRF and this is getting in the way of what would be a very
simple task.

Further, debugging 403s is nearly impossible. It'd be very helpful
when in DEBUG mode to reveal who/what/why raised the 403.

Any ideas?

Kieran



On Jul 26, 8:30 am, etone  wrote:
> Hi there,
>
> I'm trying to sent a HTTP POST from a client application to my Django
> app.  Django does indeed receive the HTTP POST as I do hit
> _HandleRequest(),  however it returns a 403 Forbidden, instead of
> hitting my handler function.  I experimented and sent a HTTP GET from
> my client application and in this case I am able to hit my handler
> function.  I would like to use HTTP POST as I want to upload some data
> to my Django app.
>
> What am I doing wrong/missing?
>
> Here is my settings.py in my django app:
>
>  try:
>     from djangoappengine.settings_base import *
>     has_djangoappengine = True
> except ImportError:
>     has_djangoappengine = False
>     DEBUG = True
>     TEMPLATE_DEBUG = DEBUG
>
> import os
>
> INSTALLED_APPS = (
>     'djangotoolbox',
> #    'django.contrib.auth',
>     'django.contrib.contenttypes',
>     'django.contrib.sessions',
> )
>
> if has_djangoappengine:
>     INSTALLED_APPS = ('djangoappengine',) + INSTALLED_APPS
>
> ADMIN_MEDIA_PREFIX = '/media/admin/'
> MEDIA_ROOT = os.path.join(os.path.dirname(__file__), 'media')
> TEMPLATE_DIRS = (os.path.join(os.path.dirname(__file__),
> 'templates'),)
>
> ROOT_URLCONF = 'urls'

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Re: "TypeError iteration over non-sequence" after deploying

[jean polo]

hi.
stupid me, was registering a form in admin...
didn't see that I had this error locally also (*only* the first time
though, reloading was working fine).

thanks !
_y


On Jul 27, 6:45 pm, Shawn Milochik  wrote:
> There's your error. The value of model_or_iterable is not iterable.
> Perhaps it's a model (based on your naming convention).
>
> Try logging the value of model_or_iterable right before that line to
> see what it contains. Once you've done that, figure out why it
> contains that instead of something that's iterable.
>
> Once you've done that, figure out whether it should never contain that
> value or whether the value is correct but you should be treating it
> differently (do something other than trying to put it in a 'for'
> loop).
>
> Shawn

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save a values_list to a charfield

[Nick]

I am needing to do some duct taping for a project that is going on
right now. In it I need to take a values_list of id's from a
ManyToMany field and save those values to a varchar field so a mysql
query can access the values. I am working with two different sets of
developers and this is the best we can come up with in such a short
period of time


Here is the model:

Candidate
filing_id = models.IntegerField()
name = models.CharField()

Race:
name = models.CharField()
primary_advance = models.ManyToManyField('Candidate')
primary_advnace_list = models.CahrField()

def(save, *args, **kwargs):
primary_ids = self.primary_advace.values_list('id', flat=True)
if primary_ids.count() > 0:
primary_advance_list = primary_ids
else:
primary_advance_list = []
super(Race, self).save(*args, **kwargs)

I've tried this but I'm coming back with empty values for the list
fields.

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Re: how to debug restful django apps?

[Marek Dudek]

On 27.07.2010 19:07, ff wrote:

how on earth is django-toolbar going to help me at all here? Did you
even read any of my post?

On Jul 27, 7:15 am, lzzzing  wrote:
   

Try Django debug toolbar.

On Jul 27, 5:06 pm, ff  wrote:

 

I have a python script that creates and then uploads a file to a
django app. Sometimes the django app will error out and my script will
just return this:
   
 

Traceback (most recent call last):
   File "/home/chris/bin/upload.py", line 318, in
 send_request(tmpzip, var1, var2, options.meta, url)
   File "/srv/the_system/scripts/multipart.py", line 89, in
send_request
 print urllib2.urlopen(request).read()
   File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
 return _opener.open(url, data, timeout)
   File "/usr/lib/python2.6/urllib2.py", line 397, in open
 response = meth(req, response)
   File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
 'http', request, response, code, msg, hdrs)
   File "/usr/lib/python2.6/urllib2.py", line 435, in error
 return self._call_chain(*args)
   File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
 result = func(*args)
   File "/usr/lib/python2.6/urllib2.py", line 518, in
http_error_default
 raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 500: INTERNAL SERVER ERROR
   
 

Its very hard to pinpoint what exactly went wrong with just a big
"ERROR 500" message...
   
 

Does anyone have any tips on how to get the full fancy traceback when
interfacing with a django app in this way?
   
   

Here is a good post about debugging django

http://simonwillison.net/2008/May/22/debugging/

regards

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Re: how to debug restful django apps?

[ffffff]

how on earth is django-toolbar going to help me at all here? Did you
even read any of my post?

On Jul 27, 7:15 am, lzzzing  wrote:
> Try Django debug toolbar.
>
> On Jul 27, 5:06 pm, ff  wrote:
>
> > I have a python script that creates and then uploads a file to a
> > django app. Sometimes the django app will error out and my script will
> > just return this:
>
> > Traceback (most recent call last):
> >   File "/home/chris/bin/upload.py", line 318, in 
> >     send_request(tmpzip, var1, var2, options.meta, url)
> >   File "/srv/the_system/scripts/multipart.py", line 89, in
> > send_request
> >     print urllib2.urlopen(request).read()
> >   File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
> >     return _opener.open(url, data, timeout)
> >   File "/usr/lib/python2.6/urllib2.py", line 397, in open
> >     response = meth(req, response)
> >   File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
> >     'http', request, response, code, msg, hdrs)
> >   File "/usr/lib/python2.6/urllib2.py", line 435, in error
> >     return self._call_chain(*args)
> >   File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
> >     result = func(*args)
> >   File "/usr/lib/python2.6/urllib2.py", line 518, in
> > http_error_default
> >     raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
> > urllib2.HTTPError: HTTP Error 500: INTERNAL SERVER ERROR
>
> > Its very hard to pinpoint what exactly went wrong with just a big
> > "ERROR 500" message...
>
> > Does anyone have any tips on how to get the full fancy traceback when
> > interfacing with a django app in this way?

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Best way to present N items in table row for list

[Wadim]

Hello.
I have a list that i want to present in a table.
Each row should have 5 items.
For now i create the function that returns me new grouped list, that i
use later in a template.
def groupListByRow(list):
cnt=0
rows=[]
while cnt

Re: "TypeError iteration over non-sequence" after deploying

[Shawn Milochik]

There's your error. The value of model_or_iterable is not iterable.
Perhaps it's a model (based on your naming convention).

Try logging the value of model_or_iterable right before that line to
see what it contains. Once you've done that, figure out why it
contains that instead of something that's iterable.

Once you've done that, figure out whether it should never contain that
value or whether the value is correct but you should be treating it
differently (do something other than trying to put it in a 'for'
loop).

Shawn

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Help:How to post data to the admin form by urllib2 ?

[jerry]

Hi:
  I build a website and want to login the admin form by python code. I
have disabled the CSRF in my project  and use urllib2 to post data.
here are my codes:

import urllib
import urllib2
import cookielib

cj = cookielib.CookieJar()
url_login ='http://127.0.0.1:8000/admin/'
body =
{'csrfmiddlewaretoken':'f85a33be11bd85108a1030fcce96a5ea','username':'root','password':'mypass','this_is_the_login_form':'1'}
opener=urllib2.build_opener(urllib2.HTTPCookieProcessor(cj))
opener.addheaders = [('User-agent','Mozilla/4.0 (compatible; MSIE 7.0;
Windows NT 5.1)')]
urllib2.install_opener(opener)
req=urllib2.Request(url_login,urllib.urlencode(body))
u=urllib2.urlopen(req)
print u.read()
print urllib2.urlopen("http://127.0.0.1:8000/admin/sites/
site/").read()


but the codes don't seem to work,here is some part of the response
---

Looks like your browser isnt configured to
accept cookies. Please enable cookies, reload this page, and try
again.



  
Username: 
  
  
Password: 

  
  

  



Could anyone give some suggestion?

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Re: "TypeError iteration over non-sequence" after deploying

[jean polo]

some more details:

Exception Type: TypeError
Exception Value:iteration over non-sequence
Exception Location: ../projects/django/contrib/admin/sites.py in
register, line 76


and /django/contrib/admin/sites.py:

74if isinstance(model_or_iterable, ModelBase):
75model_or_iterable = [model_or_iterable]
76for model in model_or_iterable:
77   if model in self._registry:
78raise AlreadyRegistered('The model %s is already
registered' % model.__name__)


thanks.
_y

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Re: DateTimeField Validation Error

[strayhand]

Doah! Thanks.

On Jul 27, 2:04 am, Daniel Roseman  wrote:
> On Jul 27, 6:34 am, strayhand  wrote:
>
> > I don't get why I'm getting a validation error with my code. I thought
> > that all of the built in fields are referenced inside of "from
> > django.db import models". Thanks for any help that you may offer.
>
> 
>
> >         status = models.CharField(max_length=7, choices=STATUS_OPTIONS)
> >         submit_date = DateTimeField(auto_now_add=True)
> >         change_date = DateTimeField(auto_now=True)
>
> They are, but you're not referring to it there. Everywhere else, you
> use models.Field - but for some reason on these two
> DateTimeFields you've missed off the 'models.' reference.
> --
> DR.

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"TypeError iteration over non-sequence" after deploying

[jean polo]

Hello
sorry for the n00b post...
I just updated my project on my host (OVH), got it running with cgi but I
have this error on every page I try to load:

TypeError at [whatever]
iteration over non-sequence

I guess this might be a url problem but I'm pretty new to django/python so I
have no clue of where to look...

my files architecture is:
/projects/blog # my django project
/projects/django
/www/.htaccess
/www/django.cgi

here are some infos:

# .htaccess --
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ django.cgi/$1 [L]
# EOF --


# django.cgi --
#!/usr/bin/env python
# encoding: utf-8

import os, sys

sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'django'))
sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'projects'))
import django.core.handlers.wsgi

def run_with_cgi(application):

environ  = dict(os.environ.items())
environ['wsgi.input']= sys.stdin
environ['wsgi.errors']   = sys.stderr
environ['wsgi.version']  = (1,0)
environ['wsgi.multithread']  = False
environ['wsgi.multiprocess'] = True
environ['wsgi.run_once'] = True

if environ.get('HTTPS','off') in ('on','1'):
environ['wsgi.url_scheme'] = 'https'
else:
environ['wsgi.url_scheme'] = 'http'

headers_set  = []
headers_sent = []

def write(data):
if not headers_set:
 raise AssertionError("write() before start_response()")

elif not headers_sent:
 # Before the first output, send the stored headers
 status, response_headers = headers_sent[:] = headers_set
 sys.stdout.write('Status: %s\r\n' % status)
 for header in response_headers:
 sys.stdout.write('%s: %s\r\n' % header)
 sys.stdout.write('\r\n')

sys.stdout.write(data)
sys.stdout.flush()

def start_response(status,response_headers,exc_info=None):
if exc_info:
try:
if headers_sent:
# Re-raise original exception if headers sent
raise exc_info[0], exc_info[1], exc_info[2]
finally:
exc_info = None # avoid dangling circular ref
elif headers_set:
raise AssertionError("Headers already set!")

headers_set[:] = [status,response_headers]
return write

result = application(environ, start_response)
try:
for data in result:
if data:# don't send headers until body appears
write(data)
if not headers_sent:
write('')   # send headers now if body was empty
finally:
if hasattr(result,'close'):
result.close()

# Change this to the directory above your site code.
#sys.path.append("/home/mycode")
# Change mysite to the name of your site package
os.environ['DJANGO_SETTINGS_MODULE'] = 'blog.settings'

try:
  run_with_cgi(django.core.handlers.wsgi.WSGIHandler())
except Exception, inst:
  print "Content-type: text/html\n\n"
  print inst
# EOF --



# urls.py --

import os

def rel(*x):
return os.path.join(os.path.abspath(os.path.dirname(__file__)), *x)

from django.conf.urls.defaults import *

from django.contrib import admin
admin.autodiscover()

urlpatterns = patterns('',
(r'^admin/', include(admin.site.urls)),
(r'^$', 'blog.posts.views.intro'),
(r'^contact/$', 'blog.posts.views.contactview'),
(r'^contact/thanks/$', 'blog.posts.views.thanks'),
(r'^(?P\w+)/$', 'blog.posts.views.dispatch'),
(r'^(?P\w+)/(?P\w+)/$',
'blog.posts.views.sublist'),
)
# EOF --


sorry for the long post...
any help greatly apreciated !

cheers,
_y
ps: this project works perfectly locally
pps: django rules !

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Re: Case insensitive non ascii chars

[Daniel Roseman]

On Jul 27, 10:26 am, Robert  wrote:
> Hi,
>
> For phrase "POLAŃSKI" I cannot get results when posting "polań" in my
> search form.
>
> I'm using the 1.2.1. Django version on PostgreSQL 8.3 with both
> (SQL_ASCII) and UTF8 encoding. In my settings DEFAULT_CHARSET is set
> for UTF8.
>
> After debugging it looks like PostgreSQL can't do the UPPER()
> properly.
>
> Is there any chance I can get that working ?
>
> Thanks,
> Robert

I don't know Postgres at all, but generally in a database the thing
that determines what characters match and how upper-casing works is
the collation, not the character set. Try looking in the PG
documentation for that.
--
DR.

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Cherokee on ubuntu problem.

[Miles]

Hello,
I try to make server which will be able to serve both static and
dynamic files. I have installed id from launchpad and watch screen
cast but there is problem. I add vserver reinstall and when i type in
my browser nickname of the vserwer i see externam www.example.com. I
thought that adding 127.0.0.1 www.example.com to /etc/hosts will help
but i just get localhost page that tells me cherokee is running:/ Any
one can help?
Best regards
Miles

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Re: Stability of auto IDs

[bruno desthuilliers]

On 27 juil, 14:37, Torsten Bronger 
wrote:
(snip)
> Well, it could map them possibly ... granted that there would be no
> reason for it.  Okay, then I must be more precise:
>
> If I have a model with an implicit primary key, and values of this
> key are used to identify associated files on disk, is this safe?
> Safe as far as restoring SQL backups, re-loading fixtures, and south
> migrations are concerned?

It's safe for reloading fixtures AFAICT (as long as your fixtures
include the existing IDs, which is the default if you create them
dumpdata IIRC).

It should be safe for restoring SQL backups, unless your RDBMS
implementation is severely broken !-).

WRT/ South, I never used it so far so I just can't tell, so you'd
better check this out by reading to source code or asking the authors
(or on the project's group or ML).


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Re: Stability of auto IDs

[Torsten Bronger]

Hallöchen!

Steve Holden writes:

> On 7/27/2010 12:38 PM, Torsten Bronger wrote:
>> Hallöchen!
>> 
>> bruno desthuilliers writes:
>> 
>>> On 27 juil, 07:19, Torsten Bronger 
>>> wrote:
>>>
 Currently, our Django app relies on the stability of various auto
 ID fields which are implicitly generated by Django/database
 backend.
>>>
>>> [...] From a practical POV, starting from a mint empty DB and
>>> inserting records in the same order without any other client app
>>> accessing to the DB, you should probably get the same IDs, but
>>> there's absolutely no garantee.
>> 
>> At least, they are explicitly mentioned in a "manage.py dumpdata"
>> fixture, and probably in a SQL dump, too.  But the DB may ignore
>> autofields when loading that data, right?
>
> It couldn't do that without ruining the relationships, could it? A
> dump includes the numerical values for the foreign keys, so the
> related primary keys have to stay the same to maintain relational
> integrity.

Well, it could map them possibly ... granted that there would be no
reason for it.  Okay, then I must be more precise:

If I have a model with an implicit primary key, and values of this
key are used to identify associated files on disk, is this safe?
Safe as far as restoring SQL backups, re-loading fixtures, and south
migrations are concerned?

Tschö,
Torsten.

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Re: Stability of auto IDs

[bruno desthuilliers]

On 27 juil, 13:38, Torsten Bronger 
wrote:
> Hall chen!
>
> bruno desthuilliers writes:
> > On 27 juil, 07:19, Torsten Bronger 
> > wrote:
>
> >> Currently, our Django app relies on the stability of various auto
> >> ID fields which are implicitly generated by Django/database
> >> backend.
>
> > [...] From a practical POV, starting from a mint empty DB and
> > inserting records in the same order without any other client app
> > accessing to the DB, you should probably get the same IDs, but
> > there's absolutely no garantee.
>
> At least, they are explicitly mentioned in a "manage.py dumpdata"
> fixture, and probably in a SQL dump, too.  But the DB may ignore
> autofields when loading that data, right?

Still a SQL DB question, but anyway: auto ID fields (at the DB level)
are only autogenerated when not explicitely provided during an insert.
Else - as Steve mentionned - you couldn't dump a db and restore it !-)

Sorry to have forgotten about this when fisrt answering your question.

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Re: Stability of auto IDs

[Steve Holden]

On 7/27/2010 12:38 PM, Torsten Bronger wrote:
> Hallöchen!
> 
> bruno desthuilliers writes:
> 
>> On 27 juil, 07:19, Torsten Bronger 
>> wrote:
>>
>>> Currently, our Django app relies on the stability of various auto
>>> ID fields which are implicitly generated by Django/database
>>> backend.
>>
>> [...] From a practical POV, starting from a mint empty DB and
>> inserting records in the same order without any other client app
>> accessing to the DB, you should probably get the same IDs, but
>> there's absolutely no garantee.
> 
> At least, they are explicitly mentioned in a "manage.py dumpdata"
> fixture, and probably in a SQL dump, too.  But the DB may ignore
> autofields when loading that data, right?
> 
It couldn't do that without ruining the relationships, could it? A dump
includes the numerical values for the foreign keys, so the related
primary keys have to stay the same to maintain relational integrity.

regards
 Steve

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Re: Override QuerySet.none()

[bruno desthuilliers]

On 27 juil, 10:37, gs794  wrote:
> Thanks for the reply.
>
> I previously had a look at how QuerySet.none (in
> Django.db.models.query) was implemented, and that didn 't give me any
> clues - hence the post.  So I worked it out by looking at 
> http://seanmonstar.com/post/708862164/extending-django-models-manager...
> which explains how QuerySet and manager methods are called through the
> QuerySetManager.

Did you actually read the source code for Manager.none() in /django/db/
manager.py ? I bet not, else you would already have solved your
problem !-)


>  __getattr__ will be called prior to throwing an AttributeError to try
> an find a manager method that isn't already implemented by the manager
> **or any of its base classes**.   That is, I think it's pulling none
> from the base class implementation.

Don't think, make sure !-)

Now the mere fact I mentionned the implementation of *Manager.none*
(nont "Queryset.None") is an answer in itself.

FWIW, you could have just logged calls to your manager's __getattr__
method, so you would have noticed that it didn't get called for
"none".

> This might not be the most elegant solution.  I'll look into the
> Manager implementation as you suggested.


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Re: Stability of auto IDs

[Torsten Bronger]

Hallöchen!

bruno desthuilliers writes:

> On 27 juil, 07:19, Torsten Bronger 
> wrote:
>
>> Currently, our Django app relies on the stability of various auto
>> ID fields which are implicitly generated by Django/database
>> backend.
>
> [...] From a practical POV, starting from a mint empty DB and
> inserting records in the same order without any other client app
> accessing to the DB, you should probably get the same IDs, but
> there's absolutely no garantee.

At least, they are explicitly mentioned in a "manage.py dumpdata"
fixture, and probably in a SQL dump, too.  But the DB may ignore
autofields when loading that data, right?

Tschö,
Torsten.

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Re: single point of entry to a webpage

[Tim Chase]

On 07/27/10 03:08, bruno desthuilliers wrote:

A django *project* is composed of
* one or more apps.
* templates
* static resources (css, images etc)


...and one or more "utils.py" files...

:-)

(tips his hat in the direction of JKM and makes a hasty exit...)

-tkc





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Re: Form validation

[Renne Rocha]

  Send your model and form codes, than it will be easier to see what is wrong.


On Tue, Jul 27, 2010 at 4:45 AM, S.Selvam  wrote:
> Hi all,
> I have two model fields (text and file ) and i want either one of the field
> to be filled out.
>
> I set null=True,blank=True for both fields in model.
>
> Still the form validation requires both fields.
>
> In form i tried to have required=False attribute, which makes it impossible
> to upload file(via HTTP Post from a applet )
>
>
> --
> Regards,
> S.Selvam
>
>    " I am because we are "
>
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Re: how to debug restful django apps?

[lzzzing]

Try Django debug toolbar.

On Jul 27, 5:06 pm, ff  wrote:
> I have a python script that creates and then uploads a file to a
> django app. Sometimes the django app will error out and my script will
> just return this:
>
> Traceback (most recent call last):
>   File "/home/chris/bin/upload.py", line 318, in 
>     send_request(tmpzip, var1, var2, options.meta, url)
>   File "/srv/the_system/scripts/multipart.py", line 89, in
> send_request
>     print urllib2.urlopen(request).read()
>   File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
>     return _opener.open(url, data, timeout)
>   File "/usr/lib/python2.6/urllib2.py", line 397, in open
>     response = meth(req, response)
>   File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
>     'http', request, response, code, msg, hdrs)
>   File "/usr/lib/python2.6/urllib2.py", line 435, in error
>     return self._call_chain(*args)
>   File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
>     result = func(*args)
>   File "/usr/lib/python2.6/urllib2.py", line 518, in
> http_error_default
>     raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
> urllib2.HTTPError: HTTP Error 500: INTERNAL SERVER ERROR
>
> Its very hard to pinpoint what exactly went wrong with just a big
> "ERROR 500" message...
>
> Does anyone have any tips on how to get the full fancy traceback when
> interfacing with a django app in this way?

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Re: error 500 & 404 / date time isnot defined

[yalda nasirian]

tanx daniel .

On Tue, Jul 27, 2010 at 2:37 PM, Daniel Roseman wrote:

> On Jul 27, 10:13 am, "yalda.nasirian" 
> wrote:
> > hi ,please help me , i realy dont know what can i do for this error i
> > cant see my web page .
> > another question : i have datetime error (i import date time in shell
> > but this error exist )
> > tanx
> > please help ! error
> > Page not found
> >
> > We're sorry, but the requested page could not be found.
> > [27/Jul/2010 03:48:34] "GET / HTTP/1.1" 404 1612
> >
>
> > my models :
> > from django.db import models
> >
> > class Poll(models.Model):
> > question = models.CharField(max_length=200)
> > pub_date = models.DateTimeField('date published')
> > def was_published_today(self):
> >  return self.pub_date.date() == datetime.date.today()
>
> It would be easier if you enabled DEBUG and included the traceback,
> but presumably this is the problem. You haven't imported datetime in
> your models.py.
> --
> DR.
>
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>
>

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Re: error 500 & 404 / date time isnot defined

[yalda nasirian]

 thank you so much hector but still i have error !
Page not found (404)  Request Method: GET  Request URL:
http://127.0.0.1:8000/admin/

Using the URLconf defined in mysite.urls, Django tried these URL patterns,
in this order:

   1. ^polls/$
   2. ^polls/(?P\d+)/$
   3. ^polls/(?P\d+)/results/$
   4. ^polls/(?P\d+)/vote/$

The current URL, admin/, didn't match any of these.

You're seeing this error because you have DEBUG = True in your Django
settings file. Change that to False, and Django will display a standard 404
page.


On Tue, Jul 27, 2010 at 2:37 PM, Daniel Roseman wrote:

> On Jul 27, 10:13 am, "yalda.nasirian" 
> wrote:
> > hi ,please help me , i realy dont know what can i do for this error i
> > cant see my web page .
> > another question : i have datetime error (i import date time in shell
> > but this error exist )
> > tanx
> > please help ! error
> > Page not found
> >
> > We're sorry, but the requested page could not be found.
> > [27/Jul/2010 03:48:34] "GET / HTTP/1.1" 404 1612
> >
>
> > my models :
> > from django.db import models
> >
> > class Poll(models.Model):
> > question = models.CharField(max_length=200)
> > pub_date = models.DateTimeField('date published')
> > def was_published_today(self):
> >  return self.pub_date.date() == datetime.date.today()
>
> It would be easier if you enabled DEBUG and included the traceback,
> but presumably this is the problem. You haven't imported datetime in
> your models.py.
> --
> DR.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Django users" group.
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>
>

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Re: MySQL error -1

[Dennis Kaarsemaker]

On di, 2010-07-27 at 00:14 -0700, shacker wrote:
> One of my Django sites has been throwing occasional 500 errors, I
> believe related to mysql:
> 
> OperationalError: (1030, 'Got error -1 from storage engine')
> 
> I'm never able to catch it in the act - I just see the 500 email
> reports. This is not connected to any particular page - it seems to
> happen to random pages across the site.  The site is not busy at all
> (it does a fraction of the mysql traffic of other sites on the same
> server). The server itself is not overloaded.
> 
> I'm not sure where to begin with this one. Anyone seen similar?

Start with checking/repairing the table that causes this error to be
thrown.
-- 
Dennis K.

They've gone to plaid!

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Re: error 500 & 404 / date time isnot defined

[Daniel Roseman]

On Jul 27, 10:13 am, "yalda.nasirian" 
wrote:
> hi ,please help me , i realy dont know what can i do for this error i
> cant see my web page .
> another question : i have datetime error (i import date time in shell
> but this error exist )
> tanx
> please help ! error
> Page not found
>
> We're sorry, but the requested page could not be found.
> [27/Jul/2010 03:48:34] "GET / HTTP/1.1" 404 1612
>

> my models :
> from django.db import models
>
> class Poll(models.Model):
>     question = models.CharField(max_length=200)
>     pub_date = models.DateTimeField('date published')
>     def was_published_today(self):
>          return self.pub_date.date() == datetime.date.today()

It would be easier if you enabled DEBUG and included the traceback,
but presumably this is the problem. You haven't imported datetime in
your models.py.
--
DR.

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Re: error 500 & 404 / date time isnot defined

[Hector Garcia]

You should first of all set DEBUG and TEMPLATE_DEBUG to True in your
settings.py, so you can have a traceback of what is happening. If you
still don't have a clue, post the traceback.

H.

Hector Garcia - Web developer, musician
http://nomadblue.com/



On Tue, Jul 27, 2010 at 11:13 AM, yalda.nasirian
 wrote:
> hi ,please help me , i realy dont know what can i do for this error i
> cant see my web page .
> another question : i have datetime error (i import date time in shell
> but this error exist )
> tanx
> please help ! error
> Page not found
>
> We're sorry, but the requested page could not be found.
> [27/Jul/2010 03:48:34] "GET / HTTP/1.1" 404 1612
>
> my setting.py :
>
> DEBUG = False
> TEMPLATE_DEBUG = False
> SEND_BROKEN_LINK_EMAILS = False
>
> DATABASES = {
>    'default': {
>        'ENGINE': 'sqlite3', # Add 'postgresql_psycopg2',
> 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
>        'NAME': 'db.dev',                      # Or path to database
> file if using sqlite3.
>        'USER': '',                      # Not used with sqlite3.
>        'PASSWORD': '',                  # Not used with sqlite3.
>        'HOST': '',                      # Set to empty string for
> localhost. Not used with sqlite3.
>        'PORT': '',                      # Set to empty string for
> default. Not used with sqlite3.
>    }
> }
> TIME_ZONE = 'America/Chicago'
>
> SITE_ID = 1
>
> USE_I18N = True
>
> USE_L10N = True
>
> MEDIA_ROOT = ''
>
> MEDIA_URL = ''
>
> ADMIN_MEDIA_PREFIX = '/media/'
>
> TEMPLATE_LOADERS = (
>    'django.template.loaders.filesystem.Loader',
>    'django.template.loaders.app_directories.Loader',
> #     'django.template.loaders.eggs.Loader',
> )
>
> MIDDLEWARE_CLASSES = (
>    'django.middleware.common.CommonMiddleware',
>    'django.contrib.sessions.middleware.SessionMiddleware',
>    'django.middleware.csrf.CsrfViewMiddleware',
>    'django.contrib.auth.middleware.AuthenticationMiddleware',
>    'django.contrib.messages.middleware.MessageMiddleware',
> )
>
> ROOT_URLCONF = 'mysite.urls'
>
> TEMPLATE_DIRS = (
>    '/home/yalda/Desktop/mytemplates'
> )
>
> INSTALLED_APPS = (
>    'django.contrib.auth',
>    'django.contrib.contenttypes',
>    'django.contrib.sessions',
>    'django.contrib.sites',
>    'django.contrib.messages',
>    'django.contrib.admin',
>    'samir',
>    )
> my urls :
> from django.conf.urls.defaults import *
> from django.contrib import admin
> admin.autodiscover()
> handler404 = 'django.views.defaults.page_not_found'
> handler500 = 'django.views.defaults.server_error'
> urlpatterns = patterns('mysite.samir.views',
>    (r'^polls/$', 'index'),
>    (r'^polls/(?P\d+)/$', 'detail'),
>    (r'^polls/(?P\d+)/results/$', 'results'),
>    (r'^polls/(?P\d+)/vote/$', 'vote'),
> )
> my models :
> from django.db import models
>
> class Poll(models.Model):
>    question = models.CharField(max_length=200)
>    pub_date = models.DateTimeField('date published')
>    def was_published_today(self):
>         return self.pub_date.date() == datetime.date.today()
>
> class Choice(models.Model):
>    poll = models.ForeignKey(Poll)
>    choice = models.CharField(max_length=200)
>    votes = models.IntegerField()
>    def __unicode__(self):
>        return self.choice
>
> my view :
>
> from django.shortcuts import render_to_response, get_object_or_404
> from mysite.samir.models import Poll
>
> def index(request):
>    latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]
>    return render_to_response('polls/index.html', {'latest_poll_list':
> latest_poll_list})
>
> def detail(request, poll_id):
>    p = get_object_or_404(Poll, pk=poll_id)
>    return render_to_response('polls/detail.html', {'poll': p})
>
> def results(request, poll_id):
>    return HttpResponse("You're looking at the results of poll %s." %
> poll_id)
>
> def vote(request, poll_id):
>    return HttpResponse("You're voting on poll %s." % poll_id)
>
> my admin.py :
> from django.contrib import admin
> from mysite.samir.models import Poll
> from mysite.samir.models import Choice
>
>
> class ChoiceInline(admin.StackedInline):
>    model = Choice
>    extra = 3
>
> class PollAdmin(admin.ModelAdmin):
>    fieldsets = [
>        (None,               {'fields': ['question']}),
>        ('Date information', {'fields': ['pub_date'], 'classes':
> ['collapse']}),
>    ]
>    inlines = [ChoiceInline]
>    list_display = ('question', 'pub_date')
>    list_filter = ['pub_date']
>    search_fields = ['question']
>    date_hierarchy = 'pub_date'
>
> admin.site.register(Poll, PollAdmin)
>
> --
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>
>

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Re: Stability of auto IDs

[Steve Holden]

On 7/27/2010 8:40 AM, bruno desthuilliers wrote:
> On 27 juil, 07:19, Torsten Bronger 
> wrote:
>> Hall chen!
>>
>> Currently, our Django app relies on the stability of various auto ID
>> fields which are implicitly generated by Django/database backend.
> 
> auto ID are a RDBMS feature, Django is not involved. They are usually
> just sequential long ints. And as the name imply, they are meaningless
> and automatically generated, so whatever language / techno you use for
> the frontend, you just can't rely on auto ID. From a practical POV,
> starting from a mint empty DB and inserting records in the same order
> without any other client app accessing to the DB, you should probably
> get the same IDs, but there's absolutely no garantee.
> 
Quite right. The major purpose of an auto ID is to be guaranteed unique.

We mostly look things up by primary key across relationships: to select
a user or a product then selection on the other attributes leads to a
much more satisfactory user experience.

POOR: Change the price of widget #345,231 to $3.14

GOOD: Change the price of the "2 cm left-handed tap widget" to $3.14

regards
 Steve

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Case insensitive non ascii chars

[Robert]

Hi,

For phrase "POLAŃSKI" I cannot get results when posting "polań" in my
search form.

I'm using the 1.2.1. Django version on PostgreSQL 8.3 with both
(SQL_ASCII) and UTF8 encoding. In my settings DEFAULT_CHARSET is set
for UTF8.

After debugging it looks like PostgreSQL can't do the UPPER()
properly.

Is there any chance I can get that working ?

Thanks,
Robert

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error 500 & 404 / date time isnot defined

[yalda.nasirian]

hi ,please help me , i realy dont know what can i do for this error i
cant see my web page .
another question : i have datetime error (i import date time in shell
but this error exist )
tanx
please help ! error
Page not found

We're sorry, but the requested page could not be found.
[27/Jul/2010 03:48:34] "GET / HTTP/1.1" 404 1612

my setting.py :

DEBUG = False
TEMPLATE_DEBUG = False
SEND_BROKEN_LINK_EMAILS = False

DATABASES = {
'default': {
'ENGINE': 'sqlite3', # Add 'postgresql_psycopg2',
'postgresql', 'mysql', 'sqlite3' or 'oracle'.
'NAME': 'db.dev',  # Or path to database
file if using sqlite3.
'USER': '',  # Not used with sqlite3.
'PASSWORD': '',  # Not used with sqlite3.
'HOST': '',  # Set to empty string for
localhost. Not used with sqlite3.
'PORT': '',  # Set to empty string for
default. Not used with sqlite3.
}
}
TIME_ZONE = 'America/Chicago'

SITE_ID = 1

USE_I18N = True

USE_L10N = True

MEDIA_ROOT = ''

MEDIA_URL = ''

ADMIN_MEDIA_PREFIX = '/media/'

TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
# 'django.template.loaders.eggs.Loader',
)

MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
)

ROOT_URLCONF = 'mysite.urls'

TEMPLATE_DIRS = (
'/home/yalda/Desktop/mytemplates'
)

INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.admin',
'samir',
)
my urls :
from django.conf.urls.defaults import *
from django.contrib import admin
admin.autodiscover()
handler404 = 'django.views.defaults.page_not_found'
handler500 = 'django.views.defaults.server_error'
urlpatterns = patterns('mysite.samir.views',
(r'^polls/$', 'index'),
(r'^polls/(?P\d+)/$', 'detail'),
(r'^polls/(?P\d+)/results/$', 'results'),
(r'^polls/(?P\d+)/vote/$', 'vote'),
)
my models :
from django.db import models

class Poll(models.Model):
question = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published')
def was_published_today(self):
 return self.pub_date.date() == datetime.date.today()

class Choice(models.Model):
poll = models.ForeignKey(Poll)
choice = models.CharField(max_length=200)
votes = models.IntegerField()
def __unicode__(self):
return self.choice

my view :

from django.shortcuts import render_to_response, get_object_or_404
from mysite.samir.models import Poll

def index(request):
latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]
return render_to_response('polls/index.html', {'latest_poll_list':
latest_poll_list})

def detail(request, poll_id):
p = get_object_or_404(Poll, pk=poll_id)
return render_to_response('polls/detail.html', {'poll': p})

def results(request, poll_id):
return HttpResponse("You're looking at the results of poll %s." %
poll_id)

def vote(request, poll_id):
return HttpResponse("You're voting on poll %s." % poll_id)

my admin.py :
from django.contrib import admin
from mysite.samir.models import Poll
from mysite.samir.models import Choice


class ChoiceInline(admin.StackedInline):
model = Choice
extra = 3

class PollAdmin(admin.ModelAdmin):
fieldsets = [
(None,   {'fields': ['question']}),
('Date information', {'fields': ['pub_date'], 'classes':
['collapse']}),
]
inlines = [ChoiceInline]
list_display = ('question', 'pub_date')
list_filter = ['pub_date']
search_fields = ['question']
date_hierarchy = 'pub_date'

admin.site.register(Poll, PollAdmin)

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how to debug restful django apps?

[ffffff]

I have a python script that creates and then uploads a file to a
django app. Sometimes the django app will error out and my script will
just return this:

Traceback (most recent call last):
  File "/home/chris/bin/upload.py", line 318, in 
send_request(tmpzip, var1, var2, options.meta, url)
  File "/srv/the_system/scripts/multipart.py", line 89, in
send_request
print urllib2.urlopen(request).read()
  File "/usr/lib/python2.6/urllib2.py", line 126, in urlopen
return _opener.open(url, data, timeout)
  File "/usr/lib/python2.6/urllib2.py", line 397, in open
response = meth(req, response)
  File "/usr/lib/python2.6/urllib2.py", line 510, in http_response
'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.6/urllib2.py", line 435, in error
return self._call_chain(*args)
  File "/usr/lib/python2.6/urllib2.py", line 369, in _call_chain
result = func(*args)
  File "/usr/lib/python2.6/urllib2.py", line 518, in
http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 500: INTERNAL SERVER ERROR

Its very hard to pinpoint what exactly went wrong with just a big
"ERROR 500" message...

Does anyone have any tips on how to get the full fancy traceback when
interfacing with a django app in this way?

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Re: DateTimeField Validation Error

[Daniel Roseman]

On Jul 27, 6:34 am, strayhand  wrote:
> I don't get why I'm getting a validation error with my code. I thought
> that all of the built in fields are referenced inside of "from
> django.db import models". Thanks for any help that you may offer.
>

>
>         status = models.CharField(max_length=7, choices=STATUS_OPTIONS)
>         submit_date = DateTimeField(auto_now_add=True)
>         change_date = DateTimeField(auto_now=True)

They are, but you're not referring to it there. Everywhere else, you
use models.Field - but for some reason on these two
DateTimeFields you've missed off the 'models.' reference.
--
DR.

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Re: What goes in 500.html?

[yalda nasirian]

hi , please help me , i realy dont know what can i do for this error i cant
see my web page .
another question : i have datetime error (i import date time in shell but
this error exist )
tanx
please help ! error
Page not found

We're sorry, but the requested page could not be found.
[27/Jul/2010 03:48:34] "GET / HTTP/1.1" 404 1612

my setting.py :

DEBUG = False
TEMPLATE_DEBUG = False
SEND_BROKEN_LINK_EMAILS = False

DATABASES = {
'default': {
'ENGINE': 'sqlite3', # Add 'postgresql_psycopg2', 'postgresql',
'mysql', 'sqlite3' or 'oracle'.
'NAME': 'db.dev',  # Or path to database file if
using sqlite3.
'USER': '',  # Not used with sqlite3.
'PASSWORD': '',  # Not used with sqlite3.
'HOST': '',  # Set to empty string for
localhost. Not used with sqlite3.
'PORT': '',  # Set to empty string for default.
Not used with sqlite3.
}
}
TIME_ZONE = 'America/Chicago'

SITE_ID = 1

USE_I18N = True

USE_L10N = True

MEDIA_ROOT = ''

MEDIA_URL = ''

ADMIN_MEDIA_PREFIX = '/media/'

TEMPLATE_LOADERS = (
'django.template.loaders.filesystem.Loader',
'django.template.loaders.app_directories.Loader',
# 'django.template.loaders.eggs.Loader',
)

MIDDLEWARE_CLASSES = (
'django.middleware.common.CommonMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
)

ROOT_URLCONF = 'mysite.urls'

TEMPLATE_DIRS = (
'/home/yalda/Desktop/mytemplates'
)

INSTALLED_APPS = (
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.sites',
'django.contrib.messages',
'django.contrib.admin',
'samir',
)
my urls :
from django.conf.urls.defaults import *
from django.contrib import admin
admin.autodiscover()
handler404 = 'django.views.defaults.page_not_found'
handler500 = 'django.views.defaults.server_error'
urlpatterns = patterns('mysite.samir.views',
(r'^polls/$', 'index'),
(r'^polls/(?P\d+)/$', 'detail'),
(r'^polls/(?P\d+)/results/$', 'results'),
(r'^polls/(?P\d+)/vote/$', 'vote'),
)
my models :
from django.db import models

class Poll(models.Model):
question = models.CharField(max_length=200)
pub_date = models.DateTimeField('date published')
def was_published_today(self):
 return self.pub_date.date() == datetime.date.today()

class Choice(models.Model):
poll = models.ForeignKey(Poll)
choice = models.CharField(max_length=200)
votes = models.IntegerField()
def __unicode__(self):
return self.choice

my view :

from django.shortcuts import render_to_response, get_object_or_404
from mysite.samir.models import Poll

def index(request):
latest_poll_list = Poll.objects.all().order_by('-pub_date')[:5]
return render_to_response('polls/index.html', {'latest_poll_list':
latest_poll_list})

def detail(request, poll_id):
p = get_object_or_404(Poll, pk=poll_id)
return render_to_response('polls/detail.html', {'poll': p})

def results(request, poll_id):
return HttpResponse("You're looking at the results of poll %s." %
poll_id)

def vote(request, poll_id):
return HttpResponse("You're voting on poll %s." % poll_id)

my admin.py :
from django.contrib import admin
from mysite.samir.models import Poll
from mysite.samir.models import Choice


class ChoiceInline(admin.StackedInline):
model = Choice
extra = 3

class PollAdmin(admin.ModelAdmin):
fieldsets = [
(None,   {'fields': ['question']}),
('Date information', {'fields': ['pub_date'], 'classes':
['collapse']}),
]
inlines = [ChoiceInline]
list_display = ('question', 'pub_date')
list_filter = ['pub_date']
search_fields = ['question']
date_hierarchy = 'pub_date'

admin.site.register(Poll, PollAdmin)




On Mon, Jul 26, 2010 at 9:45 PM, Michael Hipp  wrote:

> Thanks for a helpful and complete answer, David.
> Michael
>
>
> On 7/26/2010 6:24 AM, David De La Harpe Golden wrote:
>
>> On 24/07/10 20:14, Michael Hipp wrote:
>>
>>> What should go in a proper 500.html page?
>>>
>>
>> As little as you can get away with; it's for when your server has
>> screwed up.
>>
>> However, you probably want to make it distinguishable from the
>> apache-level 500 page, in a manner you can ask a user reporting a
>> failure a single simple question to tell the difference. At one stage I
>> had the bright idea of making them look the exact same for appearances'
>> sake. That was dumb.
>>
>>  Is some content fed to it that
>>> should be displayed?
>>>
>>>  Not really, it's intended to be pretty static, something that django has
>> a hope of outputting even in a royally messed up config.
>>
>>  Similarly for 404.html?
>>>
>>>
>> That's a bit different, put 

Re: Override QuerySet.none()

[gs794]

Thanks for the reply.

I previously had a look at how QuerySet.none (in
Django.db.models.query) was implemented, and that didn 't give me any
clues - hence the post.  So I worked it out by looking at
http://seanmonstar.com/post/708862164/extending-django-models-managers-and-querysets
which explains how QuerySet and manager methods are called through the
QuerySetManager.

 __getattr__ will be called prior to throwing an AttributeError to try
an find a manager method that isn't already implemented by the manager
**or any of its base classes**.   That is, I think it's pulling none
from the base class implementation.

So I guess a solution could be to create a class where overrides are
implemented, and let your QuerySetManager and custom QuerySet
implementations inherit from it - to save having to implement your
methods in the manager and your custom QuerySet.

This might not be the most elegant solution.  I'll look into the
Manager implementation as you suggested.

Thanks.


On Jul 27, 5:50 pm, bruno desthuilliers
 wrote:
> On 27 juil, 06:27, gs794  wrote:
>
>
>
> > Hi all,
>
> > I'm having trouble overriding QuerySet.none() (code below)...  Works
> > if I rename the method to almost anything but "none".
>
> > class QuerySetManager(models.Manager):
> >   def get_query_set(self):
> >     return self.model.QuerySet(self.model)
> >   def __getattr__(self, name):
> >     return getattr(self.get_query_set(), name)
>
> > class NewNoneQuerySet(models.query.QuerySet):
> >   def none(self):
> >     print 'NewNone\n\n\n\n'
> >     return self.filter(pk__in=[])
>
> > class TestNone(models.Model):
> >   name = models.CharField(max_length=20)
> >   objects = QuerySetManager()
> >   class QuerySet(NewNoneQuerySet):
> >     pass
>
> > TestNone.objects.none()
>
> > No output of 'NewNone\n\n\n\n'... Using the inherited method in other
> > tests...  Is there something special about the none method?
>
> Django is open-source, so you can read the source and find out by
> yourself why your code doesn't work as expected (I just did, and took
> me about 2 minutes).
>
> FWIW, you want to have a look at how Manager.none is implemented (in /
> django/db/manager.py)
>
> HTH.

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Re: single point of entry to a webpage

[bruno desthuilliers]

On 26 juil, 18:00, owidjaya  wrote:
> how do i write custom template tag that is available to all my apps.
> not tied to a particular app?

You don't have to make your templatetags "available to all your apps"
- this would make each app dependants on the others, which is exactly
what you don't want (unless you like spaghetti code and maintanance
nightmares of course).

A django *project* is composed of
* one or more apps.
* templates
* static resources (css, images etc)

Most of these apps are designed to provide a specific (and if possible
reusable) feature set (blog, news, rss, auth, regitration,
contactfrom, whatever). Note that an app doesn't have to provide
models - you can have an app that only provides templatetags and
filters, or context processors, or middleware, etc...

These apps ares usually designed to be as decoupled as possible so you
can reuse them from project to project. This of course means that
you'll have to do the "integration" works to make these apps work
together. This integration work starts in the templates - even if a
pluggable app provides it's own, these are usually only defaults /
example / starting points. But templates are, well, templates (that
is, only presentation logic), and you'll usually need more than this
(override pluggable apps views, write your own specific templateetags
and filters, whatever...). The obvious solution is to write a project-
specific app that'll host all the project-specific code. In your case,
put your custom templatetags there, and call them from *your*
templates (you do use project-specific templates, don't you ?
http://docs.djangoproject.com/en/1.2/ref/templates/api/#the-template-dirs-setting)

HTH


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Re: Override QuerySet.none()

[bruno desthuilliers]

On 27 juil, 06:27, gs794  wrote:
> Hi all,
>
> I'm having trouble overriding QuerySet.none() (code below)...  Works
> if I rename the method to almost anything but "none".
>
> class QuerySetManager(models.Manager):
>   def get_query_set(self):
>     return self.model.QuerySet(self.model)
>   def __getattr__(self, name):
>     return getattr(self.get_query_set(), name)
>
> class NewNoneQuerySet(models.query.QuerySet):
>   def none(self):
>     print 'NewNone\n\n\n\n'
>     return self.filter(pk__in=[])
>
> class TestNone(models.Model):
>   name = models.CharField(max_length=20)
>   objects = QuerySetManager()
>   class QuerySet(NewNoneQuerySet):
>     pass
>
> TestNone.objects.none()
>
> No output of 'NewNone\n\n\n\n'... Using the inherited method in other
> tests...  Is there something special about the none method?

Django is open-source, so you can read the source and find out by
yourself why your code doesn't work as expected (I just did, and took
me about 2 minutes).

FWIW, you want to have a look at how Manager.none is implemented (in /
django/db/manager.py)

HTH.

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Form validation

[S.Selvam]

Hi all,
I have two model fields (text and file ) and i want either one of the field
to be filled out.

I set null=True,blank=True for both fields in model.

Still the form validation requires both fields.

In form i tried to have required=False attribute, which makes it impossible
to upload file(via HTTP Post from a applet )


-- 
Regards,
S.Selvam

   " I am because we are "

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Re: Stability of auto IDs

[bruno desthuilliers]

On 27 juil, 07:19, Torsten Bronger 
wrote:
> Hall chen!
>
> Currently, our Django app relies on the stability of various auto ID
> fields which are implicitly generated by Django/database backend.

auto ID are a RDBMS feature, Django is not involved. They are usually
just sequential long ints. And as the name imply, they are meaningless
and automatically generated, so whatever language / techno you use for
the frontend, you just can't rely on auto ID. From a practical POV,
starting from a mint empty DB and inserting records in the same order
without any other client app accessing to the DB, you should probably
get the same IDs, but there's absolutely no garantee.

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MySQL error -1

[shacker]

One of my Django sites has been throwing occasional 500 errors, I
believe related to mysql:

OperationalError: (1030, 'Got error -1 from storage engine')

I'm never able to catch it in the act - I just see the 500 email
reports. This is not connected to any particular page - it seems to
happen to random pages across the site.  The site is not busy at all
(it does a fraction of the mysql traffic of other sites on the same
server). The server itself is not overloaded.

I'm not sure where to begin with this one. Anyone seen similar?

Thanks,
Scot

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checking sessions from another domain

[Tony]

I have a few domains currently pointed to the same website.  Im only
using one of my domains to store sessions.  When I try to access a
session when someone types in a domain other then the one that I am
using sessions for, I can't because the domain name isnt the same
(obviously).  Is there any way I can access the sessions through some
sort of function without having to do a redirect to the domain that i
use to store the sessions.  I know I could store sessions for all of
the individual domains but that wont work with my experiment.  Is
there any way to access a session stored for another domain, keeping
in mind they are all pointed to the same website.
thanks for any advice,
Tony

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Re: errors serving text files using templates and static files

[Dennis Kaarsemaker]

I suggest you install firebug and check the differences in HTTP
headers/html content with it. It's weird :)

On ma, 2010-07-26 at 18:18 -0400, Josh Boon wrote:
> Oops, swapped it and it still didn't work.  Right now I have it
> writing to a file and then redirecting and having Apache serve the
> file which works.  My code looks like this:
> 
> def bootmenu(request, username):
> user = User.objects.get(username=username)
> user_bootimage_list = Bootimage.objects.filter(person=user)[:5]
> t = loader.get_template('netboot/menu.cfg')
> c = Context({
> 'user_bootimage_list': user_bootimage_list,
> })
> f =
> open('/home/jboon/Lesson1/templates/netboot/static/dynamicmenu.cfg',
> 'w')
> menu_file = File(f)
> menu_file.write(t.render(c))
> return HttpResponseRedirect('/netboot/dynamicmenu.cfg')
> 
> It works but it's a strange workaround. Serving it directly causes
> gPXE to break.  Any thoughts?
> 
> On Mon, Jul 26, 2010 at 18:04, Dennis Kaarsemaker
>  wrote:
> On ma, 2010-07-26 at 09:21 -0700, Josh wrote:
> > return HttpResponse(menu, mimetype="plain/text")
> >
> > What makes Django's text serving different?  What can I do
> to
> > troubleshoot this issue further?  Am I just missing
> something about
> > how text files are served?
> 
> 
> The correct mimetype is text/plain. I don't know how strict
> gpxe checks
> that.
> --
> Dennis K.
> 
> They've gone to plaid!
> 
> 
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> 
> 
> 
> 
> 
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