Re: django template variables

[commonzenpython]

alright, thanks a lot Syed :P

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Re: doctests not running

[Jeff]

Just for a case of more weirdness, here is my model.py with some extra
doctests thrown in:

import markdown

from django.db import models
from django.forms import ModelForm

import settings

class Flatpage(models.Model):
"""
>>> 1 + 2
3
"""
page_name = models.CharField(max_length=100, primary_key=True,
unique=True)
title = models.CharField(blank=True, max_length=100)
description = models.CharField(blank=True, max_length=255)
markdown_content = models.TextField('content')
content = models.TextField(editable=False)

class Meta:
ordering = ['page_name']

def __unicode__(self):
"""
>>> 2 + 3
5
"""
return self.page_name

def get_absolute_url(self):
"""
>>> 1 + 2
3

>>> home_fp = Flatpage.objects.get(page_name="Home")
>>> home_fp.get_absolute_url()
'/'

Test that about page works:
>>> about_fp = Flatpage.objects.get(page_name="About")
>>> about_fp.get_absolute_url()
'/about/'

Use urlconf to determine url name from page name and then use
url name
to get absolute url.

Returns none if there is no url name associated with the page
name.

Test that homepage works:
"""
from django.core.urlresolvers import reverse
from urls import urlpatterns

for urlpattern in urlpatterns:
if (hasattr(urlpattern, "default_args") and
"page" in urlpattern.default_args and
urlpattern.default_args["page"] == self.page_name and
hasattr(urlpattern, "name")):

return reverse(urlpattern.name)

return None

def save(self, force_insert=False, force_update=False):
"""
>>> 1 + 3
4
"""
self.content = markdown.markdown(self.markdown_content)
super(Flatpage, self).save(force_insert, force_update)

and here is the new test output:

Installed 6 object(s) from 1 fixture(s)
Doctest: osl_flatpages.models.Flatpage ... ok
Doctest: osl_flatpages.models.Flatpage.__unicode__ ... ok
Doctest: osl_flatpages.models.Flatpage.save ... ok

--
Ran 3 tests in 0.005s

It appears to be running doctests for every method except for
get_absolute_url.


On Jul 10, 11:45 pm, Jeff  wrote:
> Just to follow-up, the syntax itself does not appear to be a problem:
>
> >>> import doctest
> >>> import osl_flatpages
> >>> doctest.testmod(osl_flatpages.models, verbose=1)
>
> Trying:
>     home_fp = Flatpage.objects.get(page_name="Home")
> Expecting nothing
> ok
> Trying:
>     home_fp.get_absolute_url()
> Expecting:
>     '/'
> ok
> Trying:
>     about_fp = Flatpage.objects.get(page_name="About")
> Expecting nothing
> ok
> Trying:
>     about_fp.get_absolute_url()
> Expecting:
>     '/about/'
> ok
> 6 items had no tests:
>     osl_flatpages.models
>     osl_flatpages.models.Flatpage
>     osl_flatpages.models.Flatpage.DoesNotExist
>     osl_flatpages.models.Flatpage.MultipleObjectsReturned
>     osl_flatpages.models.Flatpage.__unicode__
>     osl_flatpages.models.Flatpage.save
> 1 items passed all tests:
>    4 tests in osl_flatpages.models.Flatpage.get_absolute_url
> 4 tests in 7 items.
> 4 passed and 0 failed.
> Test passed.
> TestResults(failed=0, attempted=4)
>
> So the problem appears to be with the Django test runner not adding
> the doctests to the test suite it runs. I'm still not sure how to fix
> this issue unfortunately.
>
> On Jul 10, 9:50 pm, Jeff  wrote:
>
>
>
> > Hi,
>
> > I have a rather complicated get_absolute_url method in a models.py
> > file that I wanted to use two doctests to check. Unfortunately the
> > doctests do not appear to run when I run python manage.py test
> > according to the verbose output.
>
> > Here is the method:
>
> >     def get_absolute_url(self):
> >         """
> >         Use urlconf to determine url name from page name and then use
> > url name
> >         to get absolute url.
>
> >         Returns none if there is no url name associated with the page
> > name.
>
> >         Test that homepage works:
> >         >>> home_fp = Flatpage.objects.get(page_name="Home")
> >         >>> home_fp.get_absolute_url()
> >         '/'
>
> >         Test that about page works:
> >         >>> about_fp = Flatpage.objects.get(page_name="About")
> >         >>> about_fp.get_absolute_url()
> >         '/about/'
> >         """
> >         from django.core.urlresolvers import reverse
> >         from urls import urlpatterns
>
> >         for urlpattern in urlpatterns:
> >             if (hasattr(urlpattern, "default_args") and
> >                 "page" in urlpattern.default_args and
> >                 urlpattern.default_args["page"] == self.page_name and
> >                 hasattr(urlpattern, "name")):
>
> >                 return reverse(urlpattern.name)
>
> >       

Re: doctests not running

[Jeff]

Just to follow-up, the syntax itself does not appear to be a problem:

>>> import doctest
>>> import osl_flatpages
>>> doctest.testmod(osl_flatpages.models, verbose=1)
Trying:
home_fp = Flatpage.objects.get(page_name="Home")
Expecting nothing
ok
Trying:
home_fp.get_absolute_url()
Expecting:
'/'
ok
Trying:
about_fp = Flatpage.objects.get(page_name="About")
Expecting nothing
ok
Trying:
about_fp.get_absolute_url()
Expecting:
'/about/'
ok
6 items had no tests:
osl_flatpages.models
osl_flatpages.models.Flatpage
osl_flatpages.models.Flatpage.DoesNotExist
osl_flatpages.models.Flatpage.MultipleObjectsReturned
osl_flatpages.models.Flatpage.__unicode__
osl_flatpages.models.Flatpage.save
1 items passed all tests:
   4 tests in osl_flatpages.models.Flatpage.get_absolute_url
4 tests in 7 items.
4 passed and 0 failed.
Test passed.
TestResults(failed=0, attempted=4)

So the problem appears to be with the Django test runner not adding
the doctests to the test suite it runs. I'm still not sure how to fix
this issue unfortunately.

On Jul 10, 9:50 pm, Jeff  wrote:
> Hi,
>
> I have a rather complicated get_absolute_url method in a models.py
> file that I wanted to use two doctests to check. Unfortunately the
> doctests do not appear to run when I run python manage.py test
> according to the verbose output.
>
> Here is the method:
>
>     def get_absolute_url(self):
>         """
>         Use urlconf to determine url name from page name and then use
> url name
>         to get absolute url.
>
>         Returns none if there is no url name associated with the page
> name.
>
>         Test that homepage works:
>         >>> home_fp = Flatpage.objects.get(page_name="Home")
>         >>> home_fp.get_absolute_url()
>         '/'
>
>         Test that about page works:
>         >>> about_fp = Flatpage.objects.get(page_name="About")
>         >>> about_fp.get_absolute_url()
>         '/about/'
>         """
>         from django.core.urlresolvers import reverse
>         from urls import urlpatterns
>
>         for urlpattern in urlpatterns:
>             if (hasattr(urlpattern, "default_args") and
>                 "page" in urlpattern.default_args and
>                 urlpattern.default_args["page"] == self.page_name and
>                 hasattr(urlpattern, "name")):
>
>                 return reverse(urlpattern.name)
>
>         return None
>
> And here is the test output:
> Installed 6 object(s) from 1 fixture(s)
> test_correct_template_loaded
> (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
> test_description (osl_flatpages.tests.views.OslFlatpageTestCase) ...
> ok
> test_existent (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
> test_nonexistent (osl_flatpages.tests.views.OslFlatpageTestCase) ...
> ok
> test_nontemplate_content
> (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
> test_template_content
> (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
> test_title (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
>
> --
> Ran 7 tests in 0.415s
>
> As you can see, there is no mention of the two doctests being run.
>
> Any ideas as to why the two doctests are not running?

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doctests not running

[Jeff]

Hi,

I have a rather complicated get_absolute_url method in a models.py
file that I wanted to use two doctests to check. Unfortunately the
doctests do not appear to run when I run python manage.py test
according to the verbose output.

Here is the method:

def get_absolute_url(self):
"""
Use urlconf to determine url name from page name and then use
url name
to get absolute url.

Returns none if there is no url name associated with the page
name.

Test that homepage works:
>>> home_fp = Flatpage.objects.get(page_name="Home")
>>> home_fp.get_absolute_url()
'/'

Test that about page works:
>>> about_fp = Flatpage.objects.get(page_name="About")
>>> about_fp.get_absolute_url()
'/about/'
"""
from django.core.urlresolvers import reverse
from urls import urlpatterns

for urlpattern in urlpatterns:
if (hasattr(urlpattern, "default_args") and
"page" in urlpattern.default_args and
urlpattern.default_args["page"] == self.page_name and
hasattr(urlpattern, "name")):

return reverse(urlpattern.name)

return None

And here is the test output:
Installed 6 object(s) from 1 fixture(s)
test_correct_template_loaded
(osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
test_description (osl_flatpages.tests.views.OslFlatpageTestCase) ...
ok
test_existent (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
test_nonexistent (osl_flatpages.tests.views.OslFlatpageTestCase) ...
ok
test_nontemplate_content
(osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
test_template_content
(osl_flatpages.tests.views.OslFlatpageTestCase) ... ok
test_title (osl_flatpages.tests.views.OslFlatpageTestCase) ... ok

--
Ran 7 tests in 0.415s

As you can see, there is no mention of the two doctests being run.

Any ideas as to why the two doctests are not running?

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Nose Testing

[Binh]

Hi,

Does anyone know how to get nose testing to work on Google App Engine
(dev_appserver.py)?
I have given django-nose a try.  It works fine on django1.2.1 without
dev_appserver.

Also, does anyone know how to hook up nose plugins with django-nose
such as freshen?

Thank you so much for helping.
Binh Tran

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Re: How to modify many to many data without auto saving to DB?

[Russell Keith-Magee]

On Saturday, July 10, 2010, zweb  wrote:
> Assume there is many to many between publication and article. (example
> from django docs)
>
> By default following stmt will auto save the relationship between
> a_publication and article11 in database.
>
> a_publication.articles = [article11]
>
> how do I get that so that it changes only in memory (for session) but
> does not get saved in DB unless explicitly told to save?

That's not how many-to-many relations work. M2m fields save on
assignment, by design.

The only way to avoid the save is to avoid the assignment; collate
your list of related objects in a let before assigning them to the m2m
field.

Yours,
Russ Magee %-)

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Re: Reversing URL with unnamed capturing groups

[Russell Keith-Magee]

On Sunday, July 11, 2010, Phui Hock  wrote:
> Hi,
> It seems that if I split a URL with unnamed capturing groups into
> different urls.py files, urlresolvers.reverse(..) doesn't work as
> expected. For example:
>
> --- root urls.py ---
> (r'^foo/(.*)/', include('foo.urls'))
>
> --- foo/urls.py ---
> url('^(.*)/$', blackhole, name='foo_1')
>
> When I do urlresolvers.reverse('foo_1', args=["1", "2"], I'd expect /
> foo/1/2/. However, the actual result is /foo/2/2/. Is that not
> supported, or am I doing something totally wrong here? Named capturing
> group is the only way to go?
>

The problem you are describing is ticket #11559. At least at the
moment, it's not supported behavior. The ticket contains a discussion
of the complications associated with the idea.

Yours,
Russ Magee %-)

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Re: Admin site not formatted

[Graham Dumpleton]

Read:

  
http://docs.djangoproject.com/en/dev/howto/deployment/modpython/?from=olddocs#id1

It tells you about serving static files with mod_python.

Graham

On Jul 11, 3:50 am, octopusgrabbus  wrote:
> Using Apache and not the built-in Django web server, I can reach the
> admin site, but it's not formatted well, as it is with the built-in
> web server.
>
> Any ideas on what to do?
>
> Here's the location directive in apache
>
> 
> SetHandler python-program
> PythonHandler django.core.handlers.modpython
> SetEnv DJANGO_SETTINGS_MODULE chapter4.settings
> PythonOption django.root /home/amr/web/django/chapter4
> PythonPath "['/home/amr/web/django/'] + ['/home/amr/web/django/
> favorites/'] + sys.path
> "
> PythonDebug On
> 

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Re: mod_wsgi problem with installation

[Graham Dumpleton]

You have not supplied all the output, but likely that you don't have
either python-dev or httpd-dev packages installed and so cant find
header files for one of the other. Read the README in the mod_wsgi
source code for requirements as to what must be installed on your
system.

Graham

On Jul 10, 9:08 pm, tazimk  wrote:
> hi,
>
> Trying to figure out why make gives following errors .
> What is wrong with installation ?
>
> mod_wsgi.c:14532: error: initializer element is not constant
> mod_wsgi.c:14532: warning: data definition has no type or storage
> class
> mod_wsgi.c:14533: warning: parameter names (without types) in function
> declarati on
> mod_wsgi.c:14533: warning: data definition has no type or storage
> class
> mod_wsgi.c:14534: error: syntax error before '}' token
> mod_wsgi.c:14536: warning: parameter names (without types) in function
> declarati on
> mod_wsgi.c:14536: warning: data definition has no type or storage
> class
> mod_wsgi.c:14537: warning: parameter names (without types) in function
> declarati on
> mod_wsgi.c:14537: warning: data definition has no type or storage
> class
> mod_wsgi.c:14541: error: syntax error before '(' token
> mod_wsgi.c:14563: warning: data definition has no type or storage
> class
> mod_wsgi.c:14565: warning: parameter names (without types) in function
> declarati on
> mod_wsgi.c:14565: warning: data definition has no type or storage
> class
> mod_wsgi.c:14567: error: syntax error before "return"
> apxs:Error: Command failed with rc=65536
> .
> make: *** [mod_wsgi.la] Error 1

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How to pass a GET param that contains multiple items

[Margie Roginski]

I have a url in my app that needs to get info from a GET param.  For
example, let's say my url is retrieving books by any of a set of
authors, so the url might be this to get books authored by smith,
johnson, or klein:

www.example.com/books/?author=smith+johnson+klein

I notice that when I look at request.GET.get('author') on the server,
the '+' is gone and replaced by space:



Is this django doing this for me or is this some sort of general http
protocal thing?

My main question is just - what's the accepted way to pass in a get
parameter that contains a bunch of times.  What if the parameter
itself has spaces?  I've seen this '+' used - is that standard or just
personal preference?

Thanks,
Margie

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Re: How to modify many to many data without auto saving to DB?

[ydjango]

Is there a reason why Django does auto save to DB in following stmts?
Any way to tell it not to auto save to db?

examples,

where publications and articles are many to many..

a_publication.articles = [article11]

or

request.user.groups = [group1]

On Jul 9, 5:06 pm, zweb  wrote:
> Assume there is many to many between publication and article. (example
> from django docs)
>
> By default following stmt will auto save the relationship between
> a_publication and article11 in database.
>
> a_publication.articles = [article11]
>
> how do I get that so that it changes only in memory (for session) but
> does not get saved in DB unless explicitly told to save?
>
> [I cannot change the table structure  to remove many to many]

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Calendar Templatetag

[Mario]

Hello,

I am currently using the Calendar Templatetag found at
http://djangosnippets.org/snippets/129/ and it suites my current
needs. However, I would like to extend the functionality of the
templatetag by rendering previous and next months  i.e., June 2010,
July 2010, August 2010, September 2010 as well as capturing events in
multiple days. I looked at Django-Schedule and Swingtime, but the apps
are too complex for my simple needs.

The code:
from datetime import date, timedelta
from django import template
from myapp.models import Event
register = template.Library()

from datetime import date, timedelta
def get_last_day_of_month(year, month):
if (month == 12):
year += 1
month = 1
else:
month += 1
return date(year, month, 1) - timedelta(1)

def month_cal(year, month):
event_list = Event.objects.filter(start_date__year=year,
start_date__month=month)

first_day_of_month = date(year, month, 1)
last_day_of_month = get_last_day_of_month(year, month)
first_day_of_calendar = first_day_of_month -
timedelta(first_day_of_month.weekday())
last_day_of_calendar = last_day_of_month + timedelta(7 -
last_day_of_month.weekday())
What is the best method for adding this added functionality. Am I
better writing views or context processor
month_cal = []
week = []
week_headers = []

i = 0
day = first_day_of_calendar
while day <= last_day_of_calendar:What is the best method for
adding this added functionality. Am I better writing views or context
processor
if i < 7:What is the
week_headers.append(day)
cal_day = {}
cal_day['day'] = day
cal_day['event'] = False

for event in event_list:
if day >= event.start_date.date() and day <=
event.end_date.date():
cal_day['event'] = True
if day.month == month:
cal_day['in_month'] = True
else:s are
cal_day['in_month'] = False
week.append(cal_day)
if day.weekday() == 6:
month_cal.append(week)
week = []
i += 1
day += timedelta(1)

return {'calendar': month_cal, 'headers': week_headers}

register.inclusion_tag('agenda/month_cal.html')(month_cal)

My question is:

How should I attempt to add this functionality given the model that I
am currently using uses a start_date and end_date.

Appreciate yours inputs and suggestions.

VR,

_Mario






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Re: IntegrityError

[Justin Myers]

As another idea, can you just update your SITE_ID setting (http://
docs.djangoproject.com/en/1.2/ref/settings/#site-id)? It defaults to 1
(for the example.com instance), but if you've got a new Site object
for your actual domain, you should just be able to use its id instead.
-Justin

On Jul 10, 7:32 am, Karen Tracey  wrote:
> On Sat, Jul 10, 2010 at 2:04 AM, Fynn  wrote:
> > Exception Type: IntegrityError at /comments/post/
> > Exception Value: insert or update on table "django_comments" violates
> > foreign key constraint "django_comments_site_id_fkey"
> > DETAIL:  Key (site_id)=(1) is not present in table "django_site".
>
> > It is right, the key 1 does not exist in django_site, because I
> > deleted example.com via the admin site. I didn't think it was
> > important. Was I wrong?
>
> Yes. Rather than deleting the example.com site you should have updated it to
> contain correct information for your site. Comments is one of the contrib
> apps that uses the sites framework. 
> See:http://docs.djangoproject.com/en/dev/ref/contrib/sites/#how-django-us...
>
> Karen
> --http://tracey.org/kmt/

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Re: Apache configuration

[Anders Petersson]

Hi,

Please use mod_wsgi instead of mod_python, it is better in all ways.

http://docs.djangoproject.com/en/1.2/howto/deployment/modwsgi/#howto-deployment-modwsgi

Best,
Anders Petersson

On Jul 10, 7:49 pm, octopusgrabbus  wrote:
> I worked through samples in the Visual Quickpro Guide Django. I used
> python manage.py runserver while running through the examples.
>
> Now, I want to configure this in Apache. Django is complaining about
> finding modules underneath my top directory.
>
> Here's the apache configuration:
>
> 
> SetHandler python-program
> PythonHandler django.core.handlers.modpython
> SetEnv DJANGO_SETTINGS_MODULE chapter4.settings
> PythonOption django.root /home/amr/web/django/chapter4
> PythonPath "['/home/amr/web/django/'] + ['/home/amr/web/django/
> favorites/'] + sys.path
> "
> PythonDebug On
> 
>
> Here is the error:
>
> Request Method: GET
> Request URL:http://localhost:8586/
> Exception Type: ImportError
> Exception Value:
>
> No module named favorites.models
>
> Exception Location: /home/amr/web/django/chapter4/favorites/views.py
> in , line 3
> P
>
> I can remove this error by editing view.py in chapter4/favorites and
> modifying
>
> from favorites.models import *
>
> to
>
> from models import *
>
> My question is what configuration changes can I make in Apache to
> avoid making this edit, given this code works with Django's default
> web server?
>
> Thanks.
> cmn

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Apache configuration

[octopusgrabbus]

I worked through samples in the Visual Quickpro Guide Django. I used
python manage.py runserver while running through the examples.

Now, I want to configure this in Apache. Django is complaining about
finding modules underneath my top directory.

Here's the apache configuration:


SetHandler python-program
PythonHandler django.core.handlers.modpython
SetEnv DJANGO_SETTINGS_MODULE chapter4.settings
PythonOption django.root /home/amr/web/django/chapter4
PythonPath "['/home/amr/web/django/'] + ['/home/amr/web/django/
favorites/'] + sys.path
"
PythonDebug On


Here is the error:

Request Method: GET
Request URL: http://localhost:8586/
Exception Type: ImportError
Exception Value:

No module named favorites.models

Exception Location: /home/amr/web/django/chapter4/favorites/views.py
in , line 3
P

I can remove this error by editing view.py in chapter4/favorites and
modifying

from favorites.models import *

to

from models import *

My question is what configuration changes can I make in Apache to
avoid making this edit, given this code works with Django's default
web server?

Thanks.
cmn

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Admin site not formatted

[octopusgrabbus]

Using Apache and not the built-in Django web server, I can reach the
admin site, but it's not formatted well, as it is with the built-in
web server.

Any ideas on what to do?

Here's the location directive in apache


SetHandler python-program
PythonHandler django.core.handlers.modpython
SetEnv DJANGO_SETTINGS_MODULE chapter4.settings
PythonOption django.root /home/amr/web/django/chapter4
PythonPath "['/home/amr/web/django/'] + ['/home/amr/web/django/
favorites/'] + sys.path
"
PythonDebug On


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Serving static files

[shwetanka]

Hi

Below is my code:

settings.py

MEDIA_URL = '/static/'
STATIC_DOC_ROOT = 'C:/djangotest/codificador/static/'

urls.py

urlpatterns = patterns(' ',
  (r'^static/(?P.*)$', 'django.static.views.serve',
{'document_root': settings.STATIC_DOC_ROOT}),
)

base.html
 in style tag:
  

Reversing URL with unnamed capturing groups

[Phui Hock]

Hi,
It seems that if I split a URL with unnamed capturing groups into
different urls.py files, urlresolvers.reverse(..) doesn't work as
expected. For example:

--- root urls.py ---
(r'^foo/(.*)/', include('foo.urls'))

--- foo/urls.py ---
url('^(.*)/$', blackhole, name='foo_1')

When I do urlresolvers.reverse('foo_1', args=["1", "2"], I'd expect /
foo/1/2/. However, the actual result is /foo/2/2/. Is that not
supported, or am I doing something totally wrong here? Named capturing
group is the only way to go?

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Re: defining custom attributes for a model

[Rolando Espinoza La Fuente]

On Fri, Jul 9, 2010 at 4:52 PM, Sells, Fred
 wrote:
> I've got a model as illustrated below.  Is there any way I can define my
> own attributes that are not columns like the "fredsstuff" below?
>
>
> class A(MDSSection):
>    A0100A    = models.CharField(max_length=10, help_text='''Text      :
> Facility National Provider Identifier (NPI)''')
>    A0100B    = models.CharField(max_length=12, help_text='''Text      :
> Facility CMS Certification Number (CCN)''')
>    A0100C    = models.CharField(max_length=15, help_text='''Text      :
> State provider number''')
>    A0200     = models.CharField(max_length= 1, help_text='''Code      :
> Type of provider''')
>    A0310A    = models.CharField(max_length= 2, help_text='''Code      :
> Type of assessment: OBRA''')
> ...
>    class Meta:
>        db_table = 'A'
>        fredsstuff = "xy"
>
>    def validate(self):
>        errors = self.checkThis(fredsstuff)
>        return errors

Just put fredsstuff at class-level

class A(MDSSection):
 # fields here...

 # class attributes
 foo = 'bar'

 def do_stuff(self):
 return self.foo

You can access with:
 A.foo
or
  obj = A.objects.all()[0]
  obj.foo

~Rolando

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"SESSION_SAVE_EVERY_REQUEST = True" performance hog? Any other cons?

[Chris Seberino]

SESSION_SAVE_EVERY_REQUEST = True
(in settings.py)

seems to avoid a lot of potential bugs from forgetting to set
request.session.modified = True when necessary.

Is this a serious performance problem?  If not, I would think this
would be a good *default* value for Django no?

Chris

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Re: What causes request.session to be erased?...When you go to different view?

[Chris Seberino]

Wow beautiful.  Thanks.  I needed that.

cs

On Jul 10, 12:14 am, Javier Guerra Giraldez 
wrote:
> On Fri, Jul 9, 2010 at 11:36 PM, Chris Seberino  wrote:
> > elif form.is_valid():
> >        ...
> >        request.session["posts"].append(form.cleaned_data)
> >        
>
> > I noticed that everytime I revisit this form and rerun this view, the
> > request.session["posts"] lists gets blown away and is empty again!?!?
>
> > Am I misunderstanding something about requests and sessions?
>
> from the docs 
> (http://docs.djangoproject.com/en/1.2/topics/http/sessions/#when-sessi...
>
>   # Gotcha: Session is NOT modified, because this alters
>   # request.session['foo'] instead of request.session.
>   request.session['foo']['bar'] = 'baz'
>   In the last case of the above example, we can tell the session
> object explicitly that it has been modified by setting the modified
> attribute on the session object:
>
>   request.session.modified = True
>
> that's exactly your case.  the session object is saved automatically
> only when it's marked as modified.  but when you modify an object
> inside the session and not the session itself; it doesn't gets
> notified of the change, so you have to tell it explicitly.
>
> --
> Javier

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Re: Testing many-to-many models on a legacy database

[Rolando Espinoza La Fuente]

On Sat, Jul 10, 2010 at 9:31 AM, Derek  wrote:
> Running Django 1.2.1 under Python 2.6.
> I am obviously missing something cruccial, but I am just not sure where this
> is...
> I have a setup which includes a number of many-to-many models in a legacy
> database.  For example:
>
> class Grouping(models.Model):
>     id = models.AutoField(primary_key=True, db_column='GroupingID')
>     name = models.CharField(max_length=250, db_column='GroupingName',
> unique=True)
> class TaxAgreement(models.Model):
>     id = models.AutoField(primary_key=True, db_column='TaxID')
>     title = models.CharField(max_length=100, db_column='TaxTitle',
> unique=True)
>     groupings = models.ManyToManyField(Grouping,
> db_table='taxagreementgrouping')

Use through keyword
http://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.ManyToManyField.through

groupings = models.ManyToManyField(Grouping, through='TaxAgreementGrouping')

~Rolando

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Re: how to dynamically update model fields?

[Rolando Espinoza La Fuente]

On Sat, Jul 10, 2010 at 12:01 AM, zweb  wrote:
> I want to provide a method as follows,
>
> def update_some_model_field(key, field_name, value):
>  '''user provides the primary key of row, field name in model and the
> value and the method updates the field for that row with the value'''
>
> 1.  model_obj = Some_model.objects.get(pk = key)
> 2.  model_obj."field_name" = value  ## HOW to make this line generic??
> I do not want to do lots of If as shown below.
> 3. model_obj.save()
[...]
>
> Any suggestions?

setattr(model_obj, field_name, value)

~Rolando

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Testing many-to-many models on a legacy database

[Derek]

Running Django 1.2.1 under Python 2.6.

I am obviously missing something cruccial, but I am just not sure where this
is...

I have a setup which includes a number of many-to-many models in a legacy
database.  For example:

class Grouping(models.Model):
id = models.AutoField(primary_key=True, db_column='GroupingID')
name = models.CharField(max_length=250, db_column='GroupingName',
unique=True)

class TaxAgreement(models.Model):
id = models.AutoField(primary_key=True, db_column='TaxID')
title = models.CharField(max_length=100, db_column='TaxTitle',
unique=True)
groupings = models.ManyToManyField(Grouping,
db_table='taxagreementgrouping')
class Meta:
db_table = 'taxagreement'
...

class TaxAgreementGrouping(models.Model):
#many-to-many
id = models.AutoField(primary_key=True, db_column='id')
grouping = models.ForeignKey(Grouping, db_column='grouping_id')
tax_agreement = models.ForeignKey(TaxAgreement, unique=True,
db_column='taxagreement_id')
class Meta:
db_table = 'taxagreementgrouping'


Now when I run the "python  manage.py test", the run fails with this error:

  _mysql_exceptions.OperationalError: (1050, "Table 'taxagreementgrouping'
already exists")

and if I look through the table creation output statements, I see that
'taxagreementgrouping' table was created along with the 'taxagreement'  one.

Now if I change the TaxAgreement model to this:

class TaxAgreement(models.Model):
id = models.AutoField(primary_key=True, db_column='TaxID')
title = models.CharField(max_length=100, db_column='TaxTitle',
unique=True)
groupings = models.ManyToManyField(Grouping)

then the test runs just fine.

However, when I now want to dump a copy of the database to serve a fixture,
I run this:

  python manage.py dumpdata myapp > myapp/fixtures/myapp.json

Error: Unable to serialize database: (1146, "Table 'taxagreement_grouping'
doesn't exist")

So now I go back to the database, and rename the TaxAgreementGrouping table:

  RENAME TABLE taxagreementgrouping TO taxagreement_grouping;

and also update the model:

class TaxAgreementGrouping(models.Model):
#many-to-many
id = models.AutoField(primary_key=True, db_column='id')
grouping = models.ForeignKey(Grouping, db_column='grouping_id')
tax_agreement = models.ForeignKey(TaxAgreement, unique=True,
db_column='taxagreement_id')
class Meta:
db_table = 'taxagreement_grouping'

Now the dump does not give me the above error anymore, but when I rerun the
"python  manage.py test", I get:

  _mysql_exceptions.OperationalError: (1050, "Table 'taxagreement_grouping'
already exists")

So obviously the problem - and I am not sure exactly what that is?  - is not
fixed...

Any pointers or clues to resolve this?  I really need to start testing
sooner rather than later.


Thanks
Derek

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Re: IntegrityError

[Karen Tracey]

On Sat, Jul 10, 2010 at 2:04 AM, Fynn  wrote:

> Exception Type: IntegrityError at /comments/post/
> Exception Value: insert or update on table "django_comments" violates
> foreign key constraint "django_comments_site_id_fkey"
> DETAIL:  Key (site_id)=(1) is not present in table "django_site".
>
>
> It is right, the key 1 does not exist in django_site, because I
> deleted example.com via the admin site. I didn't think it was
> important. Was I wrong?
>

Yes. Rather than deleting the example.com site you should have updated it to
contain correct information for your site. Comments is one of the contrib
apps that uses the sites framework. See:
http://docs.djangoproject.com/en/dev/ref/contrib/sites/#how-django-uses-the-sites-framework

Karen
-- 
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Re: www.djangoproject.com

[Russell Keith-Magee]

On Thu, Jul 8, 2010 at 11:53 PM, Nick Raptis  wrote:
> Sorry for the rant but I can finally express my delayed frustration on this
> bug..
>
> I first I spent some 2-3 hours trying to find out if this problem came from
> a broken ipv6 configuration.
> Then, I actually had to delete all my profile files (delete half, find out
> if it solves it, restore, delete half again) until I knew that prefs.js (the
> about:config file) was responsible.
> I then checked the more than a 6000 lines of that file in the same manner
> (deleting half the lines each time) to find the offending option.
> At that time I thought half my hair had gone grey!
>
> The only two sites affected by this was djangoproject.com and djangobook.com
> Could be a django configuration issue on those, as other django powered
> sites behaved normally.

Ok - this is a little concerning. Are you saying that passing an
invalid language preference as part of your request header causes
Django sites (or, at least, some Django sites) to break? If so, this
sounds like something that needs to be fixed in Django.

> I'm SO glad that my frustrating time hunting this down actually helped
> another soul! :D

If you haven't torn all your hair out hunting this problem down in the
first place, I'd appreciate any help you can provide in narrowing this
problem down to a specific set of circumstances or configurations
(both client side and server side).

Yours,
Russ Magee %-)

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mod_wsgi problem with installation

[tazimk]

hi,


Trying to figure out why make gives following errors .
What is wrong with installation ?


mod_wsgi.c:14532: error: initializer element is not constant
mod_wsgi.c:14532: warning: data definition has no type or storage
class
mod_wsgi.c:14533: warning: parameter names (without types) in function
declarati on
mod_wsgi.c:14533: warning: data definition has no type or storage
class
mod_wsgi.c:14534: error: syntax error before '}' token
mod_wsgi.c:14536: warning: parameter names (without types) in function
declarati on
mod_wsgi.c:14536: warning: data definition has no type or storage
class
mod_wsgi.c:14537: warning: parameter names (without types) in function
declarati on
mod_wsgi.c:14537: warning: data definition has no type or storage
class
mod_wsgi.c:14541: error: syntax error before '(' token
mod_wsgi.c:14563: warning: data definition has no type or storage
class
mod_wsgi.c:14565: warning: parameter names (without types) in function
declarati on
mod_wsgi.c:14565: warning: data definition has no type or storage
class
mod_wsgi.c:14567: error: syntax error before "return"
apxs:Error: Command failed with rc=65536
.
make: *** [mod_wsgi.la] Error 1

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Re: could not join irc #django channel

[Kenneth Gonsalves]

On Saturday 10 July 2010 10:12:21 evileyes wrote:
> When I join irc #django channel, the server response "Cannot join
> channel (+r) - you need to be identified with services", does anyone
> know what is it means?
> how can I join #django channel?
> 

please do a google search on this list - the same problem came up yesterday 
with almost the same topic.
-- 
Regards
Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC

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Re: django template variables

[Syed Ali Saim]

dude I missed 1 important import.

first add this,

-
from django.template import RequestContext


also makesure your template path is set in settings.py

mine looks something like this

TEMPLATE_DIRS = (
# Put strings here, like "/home/html/django_templates" or
"C:/www/django/templates".
# Always use forward slashes, even on Windows.
# Don't forget to use absolute paths, not relative paths.
"C:/Appframework/evento/evento/templates"
)

so all my html  file reside inside the templates directory, its like
doc-root. it can also have sub directories inside it. it also has to be on
the same level as my setttings.py and manage.py
--
and no you can render as many variables as like this

 variables = RequestContext(request,{ 'paragraph': para ,
'variable2':v2,
 'variable3':v3})
-

hope this solves you problem.




On Sat, Jul 10, 2010 at 1:39 PM, commonzenpython
wrote:

> thanks, unfortunately i keep getting a 404, the templates name is
> 2col.html, its inside ash/templates, the url i have is (r'^paragraph/
> $', 'show_para'),   and the views is
> from django.http import HttpResponse
> from django.shortcuts import render_to_response
>
> def show_para(request):
>para = "I love this project"
>variables = RequestContext(request,{ 'paragraph': para})
>return render_to_response('2col.html',variables)
>
> even if it works i was wondering if i would have to create a new
> function for every variable,
> thanks
>
> --
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>
>


-- 
Syed Ali Saim
Project Manager
Softech Worldwide LLC

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Re: translation for variables

[Lachlan Musicman]

On Sat, Jul 10, 2010 at 05:26, Börni  wrote:
>> > Hello together,
>>
>> Are you running "django-admin.py compilemessages" to create the
>> relevant django.mo file after the event?
>
> Yes, i've tried it with the existing django.po file. And my other try
> was to create an additional file called database.po
>
> makemessages  removes my manualy added entries from django.po

Well, actually it doesn't remove them so much as not recognise them,
and therefore not including them at merge time. Makemessages is a
wrapper around gnu's gettext which does all the creation an d merging
automagically.

Hence, you can't just "add" a msgid to a po file - if the actual
string is not in the file, or not marked to be translated, it wont
appear in the po file.

> compilemessages creates mo files from my database.po and django.mo
> file, but django seems to ignore translations from any other files
> than django.mo?

Yes, that is expected behavior. All translations are expected to go
into a django.po file. All of my apps have a locale folder that
contains the relevant lang po|mo files...This means you will have a
_lot_ of django.po files scattered throughout you various apps, but
that's how it works. Since most apps use some form of version control
makes this easy enough, given the generally tiny file size of po|mo
files.

> Have a nice day and thank you very much for help,

No hassles mate. If my explanations don't make sense, let me know.

cheers
L.

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Re: Cannot connect to #django on irc

[Syed Ali Saim]

given  you have a registered nick here is the simple step by step way.
1: Launch irc client
2: type /server irc.freenode.net
3: once connected to the server use password to identify you nick by typing
/msg nickserv identify 
4: joind channel django by typing /j #django

and have fun!



On Sat, Jul 10, 2010 at 11:12 AM, Ran Zhu  wrote:

> *I try every thing I can do, but still can't join #django, it really drive
> me crazy!*
> *
> *
> *I already register a nick name named "zhuran", how can I join #django?*
>
> 2010/7/10 Ran Zhu 
>
> what is nickServ? it's a server like "irc.freenode.net" or the nick name I
>> want to registerd?
>>
>>
>> On Sat, Jul 10, 2010 at 7:57 AM, Kenneth Gonsalves wrote:
>>
>>> On Friday 09 July 2010 14:34:15 david ally wrote:
>>> > I have been trying to join the irc channel for django and it is always
>>> > giving me one problem or the other, one time it would respond that i
>>> need
>>> >  to identify with service, other times is etc...
>>> >
>>> > == #django Cannot join channel (+r) - you need to be identified with
>>> > services,
>>> >
>>> > -NickServ- You failed to identify in time for the nickname david
>>> >
>>> > Also, where do I setup the password for the django channel? I thought
>>> it is
>>> > supposed to be the same password i setup in the google group?
>>> >
>>>
>>> you need a password for registering which will work on all freenode
>>> channels.
>>> Get onto freenode and do:
>>> /msg nickserv register  
>>>
>>> this will register your nick if it is not already registered. Once
>>> registered,
>>> to identify:
>>> /msg nickserv identify 
>>>
>>> and for help:
>>> /msg nickserv help
>>>
>>>
>>> --
>>> Regards
>>> Kenneth Gonsalves
>>> Senior Associate
>>> NRC-FOSS at AU-KBC
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Project Manager
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Re: django template variables

[commonzenpython]

thanks, unfortunately i keep getting a 404, the templates name is
2col.html, its inside ash/templates, the url i have is (r'^paragraph/
$', 'show_para'),   and the views is
from django.http import HttpResponse
from django.shortcuts import render_to_response

def show_para(request):
para = "I love this project"
variables = RequestContext(request,{ 'paragraph': para})
return render_to_response('2col.html',variables)

even if it works i was wondering if i would have to create a new
function for every variable,
thanks

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IntegrityError

[Fynn]

Hi everyone,

I'm using Nathan Borror's blog application which uses django's comment
framework. I'm using django with a postgres database. Now, each time I
try to add a comment, there is an IntegrityError:

Environment:

Request Method: POST
Request URL: http://10.10.10.3:8080/comments/post/
Django Version: 1.2.1
Python Version: 2.6.5
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.comments',
 'django.contrib.contenttypes',
 'django.contrib.markup',
 'django.contrib.messages',
 'django.contrib.sessions',
 'django.contrib.sites',
 'basic.blog',
 'basic.inlines',
 'tagging']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware')


Traceback:
File "/usr/local/lib/python2.6/dist-packages/django/core/handlers/
base.py" in get_response
  100. response = callback(request,
*callback_args, **callback_kwargs)
File "/usr/local/lib/python2.6/dist-packages/django/utils/
decorators.py" in _wrapped_view
  76. response = view_func(request, *args,
**kwargs)
File "/usr/local/lib/python2.6/dist-packages/django/views/decorators/
http.py" in inner
  37. return func(request, *args, **kwargs)
File "/usr/local/lib/python2.6/dist-packages/django/contrib/comments/
views/comments.py" in post_comment
  123. comment.save()
File "/usr/local/lib/python2.6/dist-packages/django/contrib/comments/
models.py" in save
  85. super(Comment, self).save(*args, **kwargs)
File "/usr/local/lib/python2.6/dist-packages/django/db/models/base.py"
in save
  435. self.save_base(using=using, force_insert=force_insert,
force_update=force_update)
File "/usr/local/lib/python2.6/dist-packages/django/db/models/base.py"
in save_base
  535. transaction.commit_unless_managed(using=using)
File "/usr/local/lib/python2.6/dist-packages/django/db/transaction.py"
in commit_unless_managed
  175. connection._commit()
File "/usr/local/lib/python2.6/dist-packages/django/db/backends/
__init__.py" in _commit
  32. return self.connection.commit()

Exception Type: IntegrityError at /comments/post/
Exception Value: insert or update on table "django_comments" violates
foreign key constraint "django_comments_site_id_fkey"
DETAIL:  Key (site_id)=(1) is not present in table "django_site".


It is right, the key 1 does not exist in django_site, because I
deleted example.com via the admin site. I didn't think it was
important. Was I wrong?

I'm a bit puzzled here. The traceback doesn't contain any of Nathan's
or my code, it's only code that django ships with. It's called via a
blog template:
{% render_comment_form for object %}

Would be glad if someone could help me to solve this.

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Re: Cannot connect to #django on irc

[Ran Zhu]

*I try every thing I can do, but still can't join #django, it really drive
me crazy!*
*
*
*I already register a nick name named "zhuran", how can I join #django?*

2010/7/10 Ran Zhu 

> what is nickServ? it's a server like "irc.freenode.net" or the nick name I
> want to registerd?
>
>
> On Sat, Jul 10, 2010 at 7:57 AM, Kenneth Gonsalves wrote:
>
>> On Friday 09 July 2010 14:34:15 david ally wrote:
>> > I have been trying to join the irc channel for django and it is always
>> > giving me one problem or the other, one time it would respond that i
>> need
>> >  to identify with service, other times is etc...
>> >
>> > == #django Cannot join channel (+r) - you need to be identified with
>> > services,
>> >
>> > -NickServ- You failed to identify in time for the nickname david
>> >
>> > Also, where do I setup the password for the django channel? I thought it
>> is
>> > supposed to be the same password i setup in the google group?
>> >
>>
>> you need a password for registering which will work on all freenode
>> channels.
>> Get onto freenode and do:
>> /msg nickserv register  
>>
>> this will register your nick if it is not already registered. Once
>> registered,
>> to identify:
>> /msg nickserv identify 
>>
>> and for help:
>> /msg nickserv help
>>
>>
>> --
>> Regards
>> Kenneth Gonsalves
>> Senior Associate
>> NRC-FOSS at AU-KBC
>>
>> --
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>> http://groups.google.com/group/django-users?hl=en.
>>
>>
>
>
>
>

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Re: Cannot connect to #django on irc

[Ran Zhu]

what is nickServ? it's a server like "irc.freenode.net" or the nick name I
want to registerd?

On Sat, Jul 10, 2010 at 7:57 AM, Kenneth Gonsalves wrote:

> On Friday 09 July 2010 14:34:15 david ally wrote:
> > I have been trying to join the irc channel for django and it is always
> > giving me one problem or the other, one time it would respond that i need
> >  to identify with service, other times is etc...
> >
> > == #django Cannot join channel (+r) - you need to be identified with
> > services,
> >
> > -NickServ- You failed to identify in time for the nickname david
> >
> > Also, where do I setup the password for the django channel? I thought it
> is
> > supposed to be the same password i setup in the google group?
> >
>
> you need a password for registering which will work on all freenode
> channels.
> Get onto freenode and do:
> /msg nickserv register  
>
> this will register your nick if it is not already registered. Once
> registered,
> to identify:
> /msg nickserv identify 
>
> and for help:
> /msg nickserv help
>
>
> --
> Regards
> Kenneth Gonsalves
> Senior Associate
> NRC-FOSS at AU-KBC
>
> --
> You received this message because you are subscribed to the Google Groups
> "Django users" group.
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>
>


-- 
Name:朱然
Dept: 阿里巴巴-B2B-技术部-核心系统部-产品部-需求分析部
Tel: 0571-85022088-35905
Email:ran.z...@alibaba-inc.com 
AliTalk：ranzhur
msn：zhuran1...@live.com

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could not join irc #django channel

[evileyes]

hi all,

When I join irc #django channel, the server response "Cannot join
channel (+r) - you need to be identified with services", does anyone
know what is it means?
how can I join #django channel?

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Re: Database caching and multi db

[Russell Keith-Magee]

On Fri, Jul 9, 2010 at 1:41 AM, tiemonster  wrote:
> It seems that when running unit tests, the test runner not only
> creates all tables on both of my connections (which it should not do,
> if I read the documentation correctly),

Tables will be created on all connections, according to the syncdb
rules of your router (by default, all tables on all databases).
However, the non-default databases will not be flushed at the end of
each test unless you specify multi_db=True in your test case.

This is done for performance reasons; unless you're specifically
testing cross-database behavior, the overhead of setting up and
tearing down multiple databases is quite onerous.

> but also tries to create the
> cache table twice, causing the error below. Please let me know if I'm
> missing something here. I have two MySQL connections, called default
> and datastore, and have my CACHE_BACKEND set to db://cache_table.

It sounds like you may have found a problem (or, a series of related
problems). At present, the cache database backend doesn't have any
specific multi-db awareness. The CACHE_BACKEND setting doesn't allow
you to specify which database the cache backend should operate upon;
the backend itself just gets a cursor on the 'default' backend.

On top of that, the createcachetable management command accepts a
--database argument when it is run from the command line, which allows
you to control where the cache table is created... but the
create_test_db() utility doesn't pass that option when it
programatically invokes createcachetable as part of database setup.
So, when you try to create a test database, and you've specified a
database cache backend, it will repeatedly try to create the database
cache table on the default database.

This explains why TEST_MIRROR fixed your problem. When you set
TEST_MIRROR, you're effectively telling the test infrastructure that
you don't need to create a specific database, so you avoid
accidentally trying to create the cache table twice.

So - yes, this should be logged as a ticket.

As for a fix, there are three parts that are required.

Firstly, create_test_db() should pass the database flag to the
createcachetable command when it is invoked.

Secondly, the cache backend itself needs to be made multi-db aware, so
it doesn't just use the default database connection.

Thirdly, the create_test_db() call needs an additional check -- as
well as checking if the database cache backend is in use, it needs to
check if the test database that is being created actually requires the
cache table.

Conceptually, problems 2 and 3 need to be fixed by the router.
However, the API for the router requires that you provide a model as
the basis for decision making; since the database cache backend
doesn't use a Django model this won't really work well in practice.

A better approach is probably to just add extra arguments to the
CACHE_BACKEND setting when db:// is specified -- so, something like:

CACHE_BACKEND="db://mycachetable?max_entries=100_db=foo_db=slave1_db=slave2"

which would mean that:
 * the table would only be created on the database alias "foo"
 * one of [slave1, slave2] would be selected at random for read purposes.

When unspecified, read_db would default to the same value as write_db;
if write_db is unspecified, it would default to 'default'.

Yours,
Russ Magee %-)

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Re: django template variables

[Syed Ali Saim]

you can use django render_to_response which by far the most common and
preferred way, i found as newbie my self.

here is an example: (roughly but will give you an idea)

---
Now following this is an extremly crude tut by myself, for a superb one try
http://docs.djangoproject.com/en/1.2/intro/tutorial01/#intro-tutorial01
--


1: you need to create and html file in which you will write your markup
something, like and store it somewhere in your template directory lets
assume you call it paragraph.html


.
 {{paragraph}} 



2: Next edit urls.py and add a pettern something similar this is important
cause this is how django will know what url your looking for and call the
appropriate function, the function you will write in step three. open
urls.py and add

 # this is how django serves a function to prepare a view for a url. So here
is what you tell django to do when some one request a url say
# "http://yourserver/paragraph/;

urlpatterns = patterns('',
(r'^paragraph/$', show_para) ,)


3: You will write your business logic in views.py, in form of function

from django.shortcuts import render_to_response

def show_para(request)
 para = " I love this project"

variables = RequestContext(request,{ 'paragraph': para}) # telling django to
store the value in para , in the template variable paragraph

return render_to_response('paragraph.html',variables) # here is what the
user is served an html, with values you placed in it.

--




On Sat, Jul 10, 2010 at 12:01 PM, commonzenpython  wrote:

> hey guys, im trying to create a template that uses variables like
> {{ paragraph }} , but i cannot find how to get django to render
> the paragraph into the variable, i know i have to create a .py file
> that uses django's render class to render the paragraph but how can i
> connect the html file to the .py file so that it renders it
>
> --
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>
>


-- 
Syed Ali Saim
Project Manager
Softech Worldwide LLC

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django template variables

[commonzenpython]

hey guys, im trying to create a template that uses variables like
{{ paragraph }} , but i cannot find how to get django to render
the paragraph into the variable, i know i have to create a .py file
that uses django's render class to render the paragraph but how can i
connect the html file to the .py file so that it renders it

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