Re: update_object generic view doesn't see model's get_absolute_url

[David]

Solved.

I used Django's traces to discover that the object wasn't being passed
to the view on POST.  Inserting some exceptions in different places in
the source, I found that it was at the point the form was saved that
the model reference was lost.  Looking at the form I realized I wasn't
returning the object after saving it in the save method.

It figures that as soon as I decide to give up and ask the question I
find the answer 5 minutes later.

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Re: UnicodeEncodeError

[EricBrian]

Daniel, if I don't do that, I get the unicode error in the list of
dashboards in the admin section.

On Fri, Jul 30, 2010 at 04:29, Daniel Roseman  wrote:

> On Jul 29, 11:27 pm, Eric  wrote:
> > I am getting this error in the Django Administration section when I
> > add an entry for a Dashboard object.
> >
> > When I return to the item in the Admin section, the record has been
> > added and it displays correctly in the list of Dashboard objects. When
> > I click on it, it shows correctly. Only when I add a new one or save
> > one does that happend. And, I noticed that the history is not
> > populated.
> >
> > The traceback is:
> >
> > Environment:
> >
> > Request Method: POST
> > Request URL:http://127.0.0.1:8000/admin/dashboard/dashboard/1/
> > Django Version: 1.2.1
> > Python Version: 2.6.2
> > Installed Applications:
> > ['django.contrib.auth',
> >  'django.contrib.contenttypes',
> >  'django.contrib.sessions',
> >  'django.contrib.sites',
> >  'django.contrib.messages',
> >  'django.contrib.admin',
> >  'ManagementReview.dashboard']
> > 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 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/core/handlers/base.py" in get_response
> >   100. response = callback(request,
> > *callback_args, **callback_kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/contrib/admin/options.py" in wrapper
> >   239. return self.admin_site.admin_view(view)(*args,
> > **kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/utils/decorators.py" in _wrapped_view
> >   76. response = view_func(request, *args,
> > **kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/views/decorators/cache.py" in
> > _wrapped_view_func
> >   69. response = view_func(request, *args, **kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/contrib/admin/sites.py" in inner
> >   190. return view(request, *args, **kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/utils/decorators.py" in _wrapper
> >   21. return decorator(bound_func)(*args, **kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/utils/decorators.py" in _wrapped_view
> >   76. response = view_func(request, *args,
> > **kwargs)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/utils/decorators.py" in bound_func
> >   17. return func(self, *args2, **kwargs2)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/db/transaction.py" in
> > _commit_on_success
> >   299. res = func(*args, **kw)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/contrib/admin/options.py" in
> > change_view
> >   901. self.log_change(request, new_object,
> > change_message)
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/contrib/admin/options.py" in log_change
> >   443. object_repr = force_unicode(object),
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/site-packages/django/utils/encoding.py" in force_unicode
> >   66. s = unicode(s)
> > File "/Users/Eric/Documents/DjangoProjects/ManagementReview/../
> > ManagementReview/dashboard/models.py" in __unicode__
> >   47. return u"%s" % self.name.decode('utf-8')
> > File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> > python2.6/encodings/utf_8.py" in decode
> >   16. return codecs.utf_8_decode(input, errors, True)
> >
> > Exception Type: UnicodeEncodeError at /admin/dashboard/dashboard/1/
> > Exception Value: ('ascii', u"Eric's Nifty D\xe4shboard Entry", 14, 15,
> > 'ordinal not in range(128)')
> >
> > The model looks like this:
> >
> > class Dashboard(models.Model):
> > name = models.CharField("Dashboard name",max_length=100)
> > fiscal_year = models.IntegerField("Fiscal year")
> > region = models.CharField("Region", max_length=30)
> > review_date = models.DateField("Review date")
> > date_completed = models.DateField("Date Completed")
> >
> >   

update_object generic view doesn't see model's get_absolute_url

[David]

I am using the generic view
django.views.generic.create_update.update_object to edit a model.  The
form is displayed, the model gets updated, but on redirect, I get an
ImproperlyConfigured exception.  Django tells me I need to define a
get_absolute_url method, but I already did, it just doesn't seem to be
seeing it.  What's going on here?

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Re: manage.py hangs near (or at) the end

[psgou...@gmail.com]

fwiw, the user error in question was that a developer had added a call
to threading outside of any function definition or protected area.  as
such the manage.py process finished, but the thread was left hanging.

On Jul 21, 6:16 pm, "psgou...@gmail.com"  wrote:
> I've seen a few references to something like this happening, but
> nothing quite right.
>
> somewhere along the line, I have become unable to run manage.py and
> have it exit cleanly. it will appear to do everything that it is
> supposed to do. (with exceptions,) and then hang.
>
> for example,
> in mysql, create the database needed,
> in the app folder, execute 'python manage.py syncdb --noinput -v 2'
>
> according to the verbose output, all the tables are created, there is
> a section looking for fixtures, ending with the line:
> No fixtures found.
>
> which would seem to indicate that it's getting through almost
> everything and dying right at the end of it all.
>
> however, it will not return. and I am forced to kill the python
> process manually.  after restarting apache, the app will operate as
> expected, indicating (it would seem) that the problem is largely
> cosmetic.
>
> now, at one point this was working. and the command output ended with
> the same line, but it would return.
>
> nothing obvious in the actual app code seems like it would cause this
> problem. can anyone suggest anything likely? when syncdb executes is
> there anything known that would trip it up based on the contents of
> the app being synced?
>
> cheers

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Re: Flexigrid

[Gonzalo Delgado]

El 30/07/10 15:41, Ramesh escribió:
> I want to use Flexigrid for my project. I have used it before on
> TurboGears and it's really nice.
>
> Can somebody please help me how can I use flexigrid for my project?
> tutorials link to start for using Flexigrid on django?
>   

http://is.gd/dTrPN

-- 
Gonzalo Delgado 

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*Unnecessary* instances of HTML escape sequences like ?

[Chris Seberino]

I understand the need for web pages to denote the 5 HTML special
characters >, &, <, ', and " with alternate representations like
.

(These 5 are the *only* special characters in HTML right?)

What I don't understand is why an HTML page encoded with UTF-8 would
use this 

Flexigrid

[Ramesh]

Hi,

I want to use Flexigrid for my project. I have used it before on
TurboGears and it's really nice.

Can somebody please help me how can I use flexigrid for my project?
tutorials link to start for using Flexigrid on django?

Thanks a lot in advance,
RB

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how to get parent of related m2m model instance from within a template?

[J]

I have a model, which has a related model, which then has a related
m2m field (See defs below).

I want to add a method to the m2m model (ie: "Button") which, when
called in a template, will get me the original record that called the
relation. Is this possible? See method attempt below in the "Button"
model, called "get_duid". The point in this attempt is to be able to
return the original id within the template when iterating through the
buttons of a particular "DocumentUnit".

class DocumentUnit(models.Model):
parent  = models.ForeignKey('self', null=True, blank=True,
related_name='children')
unittype= models.ForeignKey(DocumentUnitType,
related_name='du')
content = models.TextField()


class DocumentUnitType(models.Model):
name= models.CharField(max_length=40)
description = models.CharField(max_length=255, blank=True)
buttons = models.ManyToManyField('Button', null=True,
blank=True, related_name='button_du_types')


class Button(models.Model):
btn_code= models.CharField(max_length=20)
title   = models.CharField(max_length=50, blank=True)
href= models.CharField(max_length=150, blank=True)
viewname= models.CharField(max_length=50, blank=True)
css_class   = models.CharField(max_length=70, blank=True)
text= models.CharField(max_length=50, blank=True)
prefix_id   = models.CharField(max_length=20)
order   = models.IntegerField(blank=True, null=True)

def get_duid(self):
return self.button_du_types.pk


Thanks for any help you can give me with this.

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Re: django_session not in "default" DB

[Jocelo]

Hi,  Thanks for your previous reply.  I'm still having problems... now
I'm getting the following error:

NameError: global name 'Session' is not defined

I check up the documentation, I understand that
'django.contrib.sessions.backends.db' makes the Session model
available in the DB router  so, just by setting the
'django.contrib.session' in my INSTALLED_APPS is enough ? What am I
missing ?

Thanks again.

On Jul 29, 3:39 pm, Dennis Kaarsemaker  wrote:
> On do, 2010-07-29 at 13:03 -0700, Jocelo wrote:
>
> > Hi,
>
> > I have two DB configured on my django project... one in oracle and the
> > other one in MySQL...
> > My Oracle DB is the default one, and on MySQL I store data that is not
> > really related to my main application.
>
> > I want to store session data in MySQL, since oracle is legacy but
> > whenever I try to store something on my session object
> > ("request.session['temp']=1"), django looks for django_session table
> > on Oracle, crashing completely my app.
>
> > I have read something about dabatase routing, but I'm not sure if this
> > is the way to go for this.
>
> It is the way to go.
>
> > How can I make django look for django_session's table on my
> > "secondary" MySQL  DB ?
>
> http://docs.djangoproject.com/en/dev/topics/db/multi-db/#automatic-da...has 
> all the details. your router would look like:
>
> class MyRouter(object):
>     def db_for_read(model, **hints):
>         if model == Session:
>             return 'secondary'
>     db_for_write = db_for_read
>
> --
> Dennis K.
>
> They've gone to plaid!

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Re: field.label in template converts to lower case in 1.2.1

[Jeff Green]

Thanks Jason! That fixed the issue.

On Fri, Jul 30, 2010 at 10:23 AM, Jason  wrote:

> Actually - make that change to the rest of the field options too. The
> word wrap threw me off there at the end.
>
> On Jul 30, 8:16 am, Jason  wrote:
> > Looks like you are generating the fields in two different cases.
> > Here's the second one:
> >
> > self.fields[config.ConfigurationName] =
> > forms.ChoiceField(
> > choices=choicelist,
> > required=False)
> >
> > Change that to:
> >
> > self.fields[config.ConfigurationName] =
> > forms.ChoiceField(
> > label =
> > config.ConfigurationName,
> > choices=choicelist,
> > required=False)
> >
> > (and make the same change to the multiple select as well)
> >
> > Assuming the ConfigurationName has proper capitalization it should
> > work.
> >
> > On Jul 30, 5:26 am, Jeff Green  wrote:
> >
> > > Here is my form class
> >
> > > class StationInfo( forms.Form):
> >
> > > def __init__( self, *args, **kwargs):
> > > super( StationInfo, self).__init__( *args, **kwargs)
> >
> > > request = args[1]
> > > selecttuple = "choice0", "--Select One--"
> >
> > > userid = threadlocals.get_current_user()
> > > user = '%s' % userid
> > > userrec = User.objects.get(username=user)
> > > projrecs = UserProj.objects.filter( User=userrec)
> > > self.projlist = []
> > > phaselist = []
> > > for proj in projrecs:
> > > self.projlist.append( proj.ProjectId)
> >
> > > # Get all the configurations for a station
> > > stationrec = request.session['stationrec']
> > > configlist1 = Configuration.objects.filter(
> > > ConfigurationType='Station', AdditionalEquipFlag=False)
> > > configlist2 = Configuration.objects.filter(
> > > ConfigurationType='Station',
> > >
> AdditionalEquipFlag=True).order_by('ConfigurationName')
> > > configlist = list(chain(configlist1, configlist2))
> >
> > > for config in configlist:
> > > config_str = '%s' % config
> > > foundconfig = True
> > > # Get station configuration record for given station
> > > configstr_list = []
> > > try:
> > > stationconfiglist = StationConfig.objects.filter(
> >
> > >
> ConfigValueId__ConfigurationId__ConfigurationName=config.ConfigurationName,
> > > EndDate__isnull=True,
> > > StationId=stationrec
> > > )
> > > if len(stationconfiglist) == 0:
> > > foundconfig = False
> > > else:
> > > for stationconfigrec in stationconfiglist:
> > > configstr = '%s' %
> stationconfigrec.ConfigValueId
> > > configstr_list.append( configstr)
> >
> > > except:
> > > foundconfig = False
> >
> > > # Get choice list
> > > choicelist = []
> > > if config_str == 'Phase' or config_str == 'Project':
> > > configvalues = ConfigValues.objects.filter(
> >
> > > ConfigurationId__ConfigurationName=config.ConfigurationName
> > > ).order_by( 'ConfigValue')
> > > else:
> > > configvalues = ConfigValues.objects.filter(
> >
> > > ConfigurationId__ConfigurationName=config.ConfigurationName,
> > > ProjectId__in = self.projlist).order_by(
> 'ConfigValue')
> > > if not foundconfig:
> > > if config.MultiSelectFlag:
> > > choicelist.append( selectmoretuple)
> > > else:
> > > choicelist.append( selecttuple)
> > > select_fieldlist = []
> > > allchoiceslist = []
> > > for configrec in configvalues:
> > > configvalstr = '%s' % configrec
> > > allchoiceslist.append( configvalstr)
> > > choicestr = "choice%s" % str( configrec.id)
> > > choicetuple = choicestr, configrec.ConfigValue
> > > if configrec.ConfigValue in configstr_list:
> > > choicelist.insert( 0, choicetuple)
> > > select_fieldlist.append( choicestr)
> > > else:
> > > choicelist.append( choicetuple)
> >
> > > for stationconfigrec in stationconfiglist:
> > > configstr = str( stationconfigrec.ConfigValueId)
> > > # Tried if not in list but it gave incorrect result
> > > found = False
> > > for choice in allchoiceslist:
> > > if configstr == 

Re: Form Validation

[Daniel Roseman]

On Jul 30, 4:49 pm, rupert  wrote:
> Here's the view template:
>
> def respondant(request):
>
>         user = request.user
>
>         if set(RESPONDANT_FIELDS).issubset(set([key for key,value in
> request.POST.items()])):
>                 form = RespondantForm(request.POST)
>                 if form.is_valid():
>                         form.save()
>                         template = "feedback/success.html"
>                 else:
>                         form = RespondantForm()
>                         return render_to_response('feedback/index.html', {
>                         'form': form,
>                 })
>
>         else:
>                 key = request.REQUEST.get('key')
>                 if key:
>                         respondant = Respondant.objects.check_key(key)
>                 else:
>                         form = RespondantForm()
>                         return render_to_response('feedback/index.html', {
>                         'form': form,
>                 })
>
>         return render_to_response(template)

This is an unusual structure for a form view, but the problem happens
in the first `else` clause. Previously you've instantiated the form,
passing it the POSTed values, and checked it for errors. But now you
re-instantiate a *blank* form, which obviously won't have any errors
attached to it. Instead of doing that, you should simply be passing
the existing form object into the template - in other words, you don't
need that `else` clause at all (I'm assuming that the extra
indentation of `return render_to_response` is just a cut-and-paste
error, and it's actually at the same level as the `if form.is_valid()`
line.)
--
DR.

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Re: Form Validation

[rupert]

Here's the view template:

def respondant(request):

user = request.user

if set(RESPONDANT_FIELDS).issubset(set([key for key,value in
request.POST.items()])):
form = RespondantForm(request.POST)
if form.is_valid():
form.save()
template = "feedback/success.html"
else:
form = RespondantForm()
return render_to_response('feedback/index.html', {
'form': form,
})

else:
key = request.REQUEST.get('key')
if key:
respondant = Respondant.objects.check_key(key)
else:
form = RespondantForm()
return render_to_response('feedback/index.html', {
'form': form,
})

return render_to_response(template)

On Jul 30, 11:44 am, Daniel Roseman  wrote:
> On Jul 30, 4:42 pm, rupert  wrote:
>
> > I'm trying to use this line of code in form validation, and it is not
> > working:
>
> > {{ form.field_name.errors }}
>
> > The following lines do output:
> > {{ form.filed_name}}
> > {{ form.field_name.help_text }}
>
> > Any thoughts? Could it be something in the view?
>
> Very likely. Has the form been validated?
> --
> DR.

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Re: Form Validation

[Daniel Roseman]

On Jul 30, 4:42 pm, rupert  wrote:
> I'm trying to use this line of code in form validation, and it is not
> working:
>
> {{ form.field_name.errors }}
>
> The following lines do output:
> {{ form.filed_name}}
> {{ form.field_name.help_text }}
>
> Any thoughts? Could it be something in the view?

Very likely. Has the form been validated?
--
DR.

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Form Validation

[rupert]

I'm trying to use this line of code in form validation, and it is not
working:

{{ form.field_name.errors }}


The following lines do output:
{{ form.filed_name}}
{{ form.field_name.help_text }}

Any thoughts? Could it be something in the view?

Here is the index.html page:
#
{% extends "feedback/base.html" %}


{% block content %}







{{ form.event.errors }}
Event you participated in:
{{ form.event }}


Your unit:
{{ form.unit }}
{{ form.unit.help_text }}


Your name:
{{ form.name }}
{{ form.name.help_text }}


Title
{{ form.title }}
{{ form.title.help_text }}


Your email address:
{{ form.email }}
{{ form.email.help_text }}


   
{% if form.name.errors %}

{% for error in form.name.errors %}
{{ error|escape }}
{% endfor %}

{% endif %}




{{ form.errors }}

{{ form.question_1 }}


{{ form.question_2.errors }}

{{ form.question_2 }}


{{ form.question_3.errors }}

{{ form.question_3 }}


{{ form.question_4.errors }}

{{ form.question_4 }}


{{ form.question_5.errors }}

{{ form.question_5 }}





{{ form.comment_6.errors }}

{{ form.comment_6 }}


{{ form.comment_7.errors }}

{{ form.comment_7 }}


{{ form.comment_8.errors }}

{{ form.comment_8 }}


{{ form.comment_9.errors }}

{{ form.comment_9 }}


{{ form.comment_10.errors }}

{{ form.comment_10 }}












{% endblock content %}

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Re: field.label in template converts to lower case in 1.2.1

[Jason]

Actually - make that change to the rest of the field options too. The
word wrap threw me off there at the end.

On Jul 30, 8:16 am, Jason  wrote:
> Looks like you are generating the fields in two different cases.
> Here's the second one:
>
>                 self.fields[config.ConfigurationName] =
> forms.ChoiceField(
>                                         choices=choicelist,
>                                         required=False)
>
> Change that to:
>
>                 self.fields[config.ConfigurationName] =
> forms.ChoiceField(
>                                         label =
> config.ConfigurationName,
>                                         choices=choicelist,
>                                         required=False)
>
> (and make the same change to the multiple select as well)
>
> Assuming the ConfigurationName has proper capitalization it should
> work.
>
> On Jul 30, 5:26 am, Jeff Green  wrote:
>
> > Here is my form class
>
> > class StationInfo( forms.Form):
>
> >     def __init__( self, *args, **kwargs):
> >         super( StationInfo, self).__init__( *args, **kwargs)
>
> >         request = args[1]
> >         selecttuple = "choice0", "--Select One--"
>
> >         userid = threadlocals.get_current_user()
> >         user = '%s' % userid
> >         userrec = User.objects.get(username=user)
> >         projrecs = UserProj.objects.filter( User=userrec)
> >         self.projlist = []
> >         phaselist = []
> >         for proj in projrecs:
> >             self.projlist.append( proj.ProjectId)
>
> >         # Get all the configurations for a station
> >         stationrec = request.session['stationrec']
> >         configlist1 = Configuration.objects.filter(
> > ConfigurationType='Station', AdditionalEquipFlag=False)
> >         configlist2 = Configuration.objects.filter(
> > ConfigurationType='Station',
> >                     AdditionalEquipFlag=True).order_by('ConfigurationName')
> >         configlist = list(chain(configlist1, configlist2))
>
> >         for config in configlist:
> >             config_str = '%s' % config
> >             foundconfig = True
> >             # Get station configuration record for given station
> >             configstr_list = []
> >             try:
> >                 stationconfiglist = StationConfig.objects.filter(
>
> > ConfigValueId__ConfigurationId__ConfigurationName=config.ConfigurationName,
> >                     EndDate__isnull=True,
> >                     StationId=stationrec
> >                     )
> >                 if len(stationconfiglist) == 0:
> >                     foundconfig = False
> >                 else:
> >                     for stationconfigrec in stationconfiglist:
> >                         configstr = '%s' % stationconfigrec.ConfigValueId
> >                         configstr_list.append( configstr)
>
> >             except:
> >                 foundconfig = False
>
> >             # Get choice list
> >             choicelist = []
> >             if config_str == 'Phase' or config_str == 'Project':
> >                 configvalues = ConfigValues.objects.filter(
>
> > ConfigurationId__ConfigurationName=config.ConfigurationName
> >                     ).order_by( 'ConfigValue')
> >             else:
> >                 configvalues = ConfigValues.objects.filter(
>
> > ConfigurationId__ConfigurationName=config.ConfigurationName,
> >                     ProjectId__in = self.projlist).order_by( 'ConfigValue')
> >             if not foundconfig:
> >                 if config.MultiSelectFlag:
> >                     choicelist.append( selectmoretuple)
> >                 else:
> >                     choicelist.append( selecttuple)
> >             select_fieldlist = []
> >             allchoiceslist = []
> >             for configrec in configvalues:
> >                 configvalstr = '%s' % configrec
> >                 allchoiceslist.append( configvalstr)
> >                 choicestr = "choice%s" % str( configrec.id)
> >                 choicetuple = choicestr, configrec.ConfigValue
> >                 if configrec.ConfigValue in configstr_list:
> >                     choicelist.insert( 0, choicetuple)
> >                     select_fieldlist.append( choicestr)
> >                 else:
> >                     choicelist.append( choicetuple)
>
> >             for stationconfigrec in stationconfiglist:
> >                 configstr = str( stationconfigrec.ConfigValueId)
> >                 # Tried if not in list but it gave incorrect result
> >                 found = False
> >                 for choice in allchoiceslist:
> >                     if configstr == choice:
> >                         found = True
> >                         break
> >                 if not found:
> >                     choicestr = "choice%s" % str(
> > stationconfigrec.ConfigValueId.id)
> >                     choicetuple = choicestr, configstr
> >                     choicelist.insert( 0, 

Re: test's client.post says post but request.method says GET

[Phlip]

On Jul 30, 3:28 am, Phlip  wrote:
> > What's the value of `self.url`? One possibility is that it doesn't end
> > with a slash
>
> Ends with a slash. I'm now checking the response goodies, like
> response.status, to see if any other redirections happen!

Yup - a redirect. My colleagues left SSL turned on. I won't ask how to
mock it in a test I'l just turn it off...

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Re: field.label in template converts to lower case in 1.2.1

[Jason]

Looks like you are generating the fields in two different cases.
Here's the second one:

self.fields[config.ConfigurationName] =
forms.ChoiceField(
choices=choicelist,
required=False)

Change that to:

self.fields[config.ConfigurationName] =
forms.ChoiceField(
label =
config.ConfigurationName,
choices=choicelist,
required=False)


(and make the same change to the multiple select as well)

Assuming the ConfigurationName has proper capitalization it should
work.


On Jul 30, 5:26 am, Jeff Green  wrote:
> Here is my form class
>
> class StationInfo( forms.Form):
>
>     def __init__( self, *args, **kwargs):
>         super( StationInfo, self).__init__( *args, **kwargs)
>
>         request = args[1]
>         selecttuple = "choice0", "--Select One--"
>
>         userid = threadlocals.get_current_user()
>         user = '%s' % userid
>         userrec = User.objects.get(username=user)
>         projrecs = UserProj.objects.filter( User=userrec)
>         self.projlist = []
>         phaselist = []
>         for proj in projrecs:
>             self.projlist.append( proj.ProjectId)
>
>         # Get all the configurations for a station
>         stationrec = request.session['stationrec']
>         configlist1 = Configuration.objects.filter(
> ConfigurationType='Station', AdditionalEquipFlag=False)
>         configlist2 = Configuration.objects.filter(
> ConfigurationType='Station',
>                     AdditionalEquipFlag=True).order_by('ConfigurationName')
>         configlist = list(chain(configlist1, configlist2))
>
>         for config in configlist:
>             config_str = '%s' % config
>             foundconfig = True
>             # Get station configuration record for given station
>             configstr_list = []
>             try:
>                 stationconfiglist = StationConfig.objects.filter(
>
> ConfigValueId__ConfigurationId__ConfigurationName=config.ConfigurationName,
>                     EndDate__isnull=True,
>                     StationId=stationrec
>                     )
>                 if len(stationconfiglist) == 0:
>                     foundconfig = False
>                 else:
>                     for stationconfigrec in stationconfiglist:
>                         configstr = '%s' % stationconfigrec.ConfigValueId
>                         configstr_list.append( configstr)
>
>             except:
>                 foundconfig = False
>
>             # Get choice list
>             choicelist = []
>             if config_str == 'Phase' or config_str == 'Project':
>                 configvalues = ConfigValues.objects.filter(
>
> ConfigurationId__ConfigurationName=config.ConfigurationName
>                     ).order_by( 'ConfigValue')
>             else:
>                 configvalues = ConfigValues.objects.filter(
>
> ConfigurationId__ConfigurationName=config.ConfigurationName,
>                     ProjectId__in = self.projlist).order_by( 'ConfigValue')
>             if not foundconfig:
>                 if config.MultiSelectFlag:
>                     choicelist.append( selectmoretuple)
>                 else:
>                     choicelist.append( selecttuple)
>             select_fieldlist = []
>             allchoiceslist = []
>             for configrec in configvalues:
>                 configvalstr = '%s' % configrec
>                 allchoiceslist.append( configvalstr)
>                 choicestr = "choice%s" % str( configrec.id)
>                 choicetuple = choicestr, configrec.ConfigValue
>                 if configrec.ConfigValue in configstr_list:
>                     choicelist.insert( 0, choicetuple)
>                     select_fieldlist.append( choicestr)
>                 else:
>                     choicelist.append( choicetuple)
>
>             for stationconfigrec in stationconfiglist:
>                 configstr = str( stationconfigrec.ConfigValueId)
>                 # Tried if not in list but it gave incorrect result
>                 found = False
>                 for choice in allchoiceslist:
>                     if configstr == choice:
>                         found = True
>                         break
>                 if not found:
>                     choicestr = "choice%s" % str(
> stationconfigrec.ConfigValueId.id)
>                     choicetuple = choicestr, configstr
>                     choicelist.insert( 0, choicetuple)
>                     select_fieldlist.append( choicestr)
>
>             if config.MultiSelectFlag:
>
>                 self.fields[config.ConfigurationName] =
> forms.MultipleChoiceField(
>                         choices=choicelist,
>                         required=False,
>                         widget =
> MyMultiSelectWidget(initial=select_fieldlist ))

Re: values with distinct not working as expected

[Scott Gould]

You don't need order_by to get distinct values per se, but in this
case you need to put it in to override whatever default ordering you
have on your model (since any order_by fields will be included in the
query and thwart your distinct()).

On Jul 30, 3:52 am, tuxcanfly  wrote:
> Thanks, that works!
>
> But I don't understand why I should order_by to get distinct values.
>
> On Jul 29, 3:59 pm, Subhranath Chunder  wrote:
>
>
>
> > If you don't want to uniquify yourself, then why not simply do:
> > User.objects.values('username').order_by('username').distinct()
>
> > or, going the way that were already heading, it would be:
> > Visitor.objects.values('user__username').order_by('user__username'').distin 
> > ct()
>
> > Thanks,
> > Subhranath Chunder.
>
> > On Thu, Jul 29, 2010 at 2:29 PM, tuxcanfly  wrote:
> > > I have this:
>
> > > class Visitor(models.Model):
> > >    user = models.ForeignKey(User)
> > >    ..
> > >    ..
>
> > > I'm trying to get the distinct usernames, so I did this:
>
> > >    Visitor.objects.values("user__username").distinct()
>
> > > But this stil gives me duplicate usernames. Of course I could use a
> > > flat values_list  and uniquify the result, but...
>
> > > --
> > > You received this message because you are subscribed to the Google Groups
> > > "Django users" group.
> > > To post to this group, send email to django-us...@googlegroups.com.
> > > To unsubscribe from this group, send email to
> > > django-users+unsubscr...@googlegroups.com > >  groups.com>
> > > .
> > > For more options, visit this group at
> > >http://groups.google.com/group/django-users?hl=en.

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Re: Need Help!

[Alex Robbins]

You could look here: http://djangopeople.net/us/ny/
Or try posting here: http://djangogigs.com/
or here: http://djangozen.com/jobs/

Hope that helps,
Alex

On Jul 29, 11:27 am, Ken  wrote:
> Looking for a django developer in the NYC area!
> I would appreciate any help, if you know of anyone!
> Thank you!
>
> Ken

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Re: Regex problem in urls

[Alex Robbins]

Based on the urls.py file you are showing us, it seems like /start/
should be a valid url.

Are you running the dev server with automatic reloading? Sometimes you
need to force a reload on it to see changes. (I normally notice that
in the admin, but it could come up anywhere stuff gets cached in
memory for performance on startup).

Alex

On Jul 29, 4:18 pm, Gordy  wrote:
> I'm a rookie at Django so this is probably something obvious.
>
> My urls.py looks like this:
>
> from django.conf.urls.defaults import *
>
> # Uncomment the next two lines to enable the admin:
> from django.contrib import admin
> admin.autodiscover()
>
> urlpatterns = patterns('',
>     # Example:
>     # (r'^sunlight/', include('sunlight.foo.urls')),
>
>     # Uncomment the admin/doc line below and add
> 'django.contrib.admindocs'
>     # to INSTALLED_APPS to enable admin documentation:
>     (r'^admin/doc/', include('django.contrib.admindocs.urls')),
>
>     # Uncomment the next line to enable the admin:
>     (r'^admin/(.*)', 'admin.site.root'),
>     (r'^start/', 'sunlight.start.views.index'),
>     (r'req/','sunlight.requests.views.index'),
> )
> ~
>
> When I hit the site, I get:
>
> Page not found (404)
> Request Method:         GET
> Request URL:    http://server2/start/
>
> Using the URLconf defined in sunlight.urls, Django tried these URL
> patterns, in this order:
>
>    1. ^admin/doc/
>    2. ^admin/(.*)
>    3. ^[/]$
>    4. req/
>
> The current URL, start/, didn't match any of these.
>
> So it looks like it isn't properly interpreting the regex on line 3.
>
> Any help would be appreciated.

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Re: Re: Best way to find near people

[Bill Freeman]

A couple of possible optimizations:

First, because cos is single valued over the range of possible angles
(as measured
from the center of the earth, 0 <= d <= PI) distance is monotonic with
cos distance.
So you can pre-calculate the cos of the distance, and compare the
innder expression
to that:

  th = cos(near_value_in_km / 6378.137)

Also, pre-calculate lat as radians, sin of long, and cos of long, so
that there's no
chance that the database will perform these calculations once per row
as opposed to
once per query.  Then:

   (cos_long * cos(radians(lattitude)) *  cos(radians(longitude) -
rad_lat)   +  sin_long * sin(radians(latitude) > th

(Yes, greater than.  Cos is max, +1, at minimum distance.)

Far fewer trig functions per row.

And if you're willing to denormalize, storing latitude as both its sin
and cos, and longitude
as its cos (possibly, further denormalization, also storing the
original degree values to
avoid dancing low order decimals in the UI), then you only need one
trig functionper row.
If you arrange to return the expression, you don't even have to
recalculate it on the python
side to get actual distance, if desired, for the items that are close
enough (take acos and
multiply by earth radius).

Note that you can still sort on cos(distance) in the DB if you're
interested in, for example,
a closest first presentation.

Applying the bounding box first means that you can avoid even that one
cos for items that
are outside the bounding box.

On Fri, Jul 30, 2010 at 4:06 AM, Henrik Genssen
 wrote:
> I use .extra(where=[where])
>
> and something like this (measures km, not miles):
> ( 6378.137 * acos( cos( radians(long) ) * cos( radians( latitude ) ) * cos( 
> radians( longitude ) - radians(lat) ) + sin( radians(long) ) * sin( radians( 
> latitude ) ) ) ) < 10
>
> latitude and logitude are db-fields, 6378.137 the radius of the earth, 
> long/lat my current position, searches for objects in a 10 km circle
>
> regards
>
> Henrik
>
>
>>reply to message:
>>date: 30.07.2010 07:30:30
>>from: "Jani Tiainen" 
>>to: django-users@googlegroups.com
>>subject: Re: Best way to find near people
>>
>>> On Jul 29, 2010, at 2:58 PM, Alexandre González wrote:
>>> > Hi!
>>> >
>>> > I'm searching near people in my app. I'm doing it a this way:
>>> >
>>> > 37             people = Person.objects.all().exclude(user=request.user)
>>> > 38
>>> > 39             near_people = list()
>>> > 40             for person in people:
>>> > 41                 if self.is_near(me.coordinates, person.coordinates):
>>> > near_people.append(person)
>>> >
>>> > Now, I'm getting all the the Person objects. This is a inefficient way.
>>> >
>>> > The coordinates are latitude/longitude coordinates, so I think in test
>>> > the variation and get only latitude +/- 1 and longitude +/- 1 and after
>>> > this, do the test exactly (the funcion is_near).
>>> >
>>> > But instead this, can I "draw" a circle and search only Person objects
>>> > inside it?
>>>
>>> I'm not sure what database you are using, but if you are using PostgreSQL,
>>> it has built-in geometric operators specifically for this kind of thing.
>>> You might have to drop down into SQL, but in 1.2, that's nice and easy.
>>>
>>> The PostgreSQL documentation on this is at:
>>>
>>>      http://www.postgresql.org/docs/8.4/interactive/datatype-geometric.html
>>> --
>>> -- Christophe Pettus
>>>    ...@thebuild.com
>>
>>Or if spatial operations are really needed, why not to use real spatial
>>database and GeoDjango (django.contrib.gis). Spatialite, Postgis, Mysql or
>>oracle. All supports at spatial to some extent. And there you can do easily
>>simple filtering:
>>
>>Person.objects.filter(person_coordinates__dwithin(me.coordinates, distance))
>>
>>..and geodjango + spatial engine behind it will take care of all that complex
>>stuff.
>>
>>Note: you can still use GEOS parts from geodjango to do calculations so you
>>don't have to reinvent wheel if you want to keep coordinates as you already
>>have.
>>
>>--
>>
>>Jani Tiainen
>>
>>--
>>You received this message because you are subscribed to the Google Groups 
>>"Django users" group.
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>>http://groups.google.com/group/django-users?hl=en.
>>
>
> --
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Re: generate cache by visiting protected links

[Benedict Verheyen]

On 30/07/2010 12:06, Jirka Vejrazka wrote:
>> I still have 2 approaches i can take.
> 
>   I still believe that there is a 3rd option there - to bypass the
> view / auth / login machinery completely :)
> 
> 
>   If your primary goal is to cache the statistics and the statistics
> does not depend on the user that is logged in (you did pass a user
> with pk=1 in one of your previous emails), then you don't really need
> to call any view to cache the data. You can call the function that
> calculates the statistics (that would cache the data internally within
> the function), then call this function from anywhere upon start of
> your webserver (or cron job, as mentioned before).
> 
>   As long as you have a global cache (i.e. memcached), this would work
> very nicely and you would not have to do any urllib2 login magic.
> 
>   Let me give you a short example:
> 
> def stats_top_callers_per_year(some_parameters_not_tied_to_a_specific_user):
> cache_key = 'stats_top_callers_per_year'
> data = cache.get(cache_key)
> if data:
>   return data
> # calculate the data somehow
> cache.set(cache_key, data)  #  <- set appropriate timeout there
> 
> 
> Then have small script called before (or shortly after) your web
> server start, that would import this function from your code, hence
> calculating the statistics. Then, as long as you use memcached, your
> web would use the cached statistics every time the
> stats_top_callers_per_year() would be called frmo your views.
> 
>   Jirka
> 

Hi Jirka,

your approach is better, and cleaner.
I will do it that way.
It boils down to caching the results of querysets rather than caching pages.
I'll post the stats function i've been using to test all this:

@check_can_view_stats
@csrf_exempt
def stats_top_callers_per_year(request):
# Statistics for the top 30 callers
# Choose different base ( & menu) according for staff or other user
if ( request.user.is_staff ):
extends_from = "management/base.html"
else: extends_from = "management/public_base.html"
# We'll use a simple class that will serve as the base for the individual 
data
class Stats(object):
pass
stats_all = {}
# We want the last 5 years
current_year = datetime.datetime.now().year
archive_year = current_year - 4
years = xrange(archive_year, current_year+1)
for year in years:
stats_year = []
counts = {}
# Initialize count dict
# If we don't do this, we get a KeyError
for user in User.objects.all():
counts[user]=0
# Count the times an user has called (called initiator here)
for i in Call.objects.filter(date_created__year=year):
for _init in i.initiator.all():
counts[_init] += 1
# Sort the dictionary
count_sorted = sorted(counts.items(), lambda x, y: cmp(x[1], y[1]), 
reverse=True)
# Make the stats of the top 30 users ready for the template
for user_stat in count_sorted[0:30]:
if ( user_stat[1] > 0 ):
st = Stats()
st.calls = user_stat[1]
st.user = user_stat[0]
stats_year.append(st)
stats_all[year]=stats_year
stats_sorted = sorted(stats_all.items(), lambda x, y: cmp(x[0], y[0]), 
reverse=True)
   return render_to_response('management/stats.html', {'extends_from': 
extends_from, 'stats_year': stats_sorted},
context_instance=RequestContext(request))


I'm sure there is still room for improving the way i construct my data but i 
haven't
yet reached that phase in the project :)

Caching the stats_sorted data would be enough i think.
I calculate here which users have been bothering our ICT the most. It's a vital 
stat :) ;)

Also, my 1ste approach comes with a hitch.
According to who logs in, you get a different menu and there is also a login 
button with
the username on it.
This is also cached so when you visit the stats page under your own user, you 
see
the stats correcty but the logout part contains the administrator name instead 
of your own.
In other words, the menu & login/logout button needs to be excluded from cache.
As i've found out, there is no standard way of doing that in Django and you 
need to use
a custom tag & middleware:
http://www.holovaty.com/writing/django-two-phased-rendering/

I've tried to set it up but it failed so far.

As it turns out, your method is clearer, simpler and does what i want :)
Building a nice decorator from it that takes the function name as key would be 
ideal
so i'll do it that way.

Thanks,
Benedict


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filebrowser w/ grappelli

[Bobby Roberts]

hi group.  I've got filebrowser working great with grappelli.  It
uploads images and does the sizes automatically.  I have a question
though.  How do you choose the size you want to to use from the
filebrowser popup window when you want to insert an image?  I don't
see any way to do it.  Does anyone know?


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Re: Python/Django hosting

[Shawn Milochik]

On Thu, Jul 29, 2010 at 1:22 PM, kostia  wrote:
> Thanks, I already know about webfraction. Great site.
>
> If anyone can provide cheaper solution, hosted in Europe, please write
> me.
>
> --

http://lmgtfy.com/?q=django+hosting+europe=1

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ManyToMany to languages

[Alessandro Ronchi]

I need to put a manytomany that points to a list of languages.
I need to create another language model or I can use a django languages one?

-- 
Alessandro Ronchi
http://www.soasi.com

Hobby & Giochi
http://hobbygiochi.com
http://www.facebook.com/hobbygiochi

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[SOLVED] Re: Filtering within a ModelForm

[Casey S. Greene]

Hi Derek,

Thanks for your help -- I had tried both of those but couldn't get them 
to work with generic views.  In the end I just abandoned the generic 
view and used the __init__() approach and things worked.


-- Casey

On 07/28/2010 09:35 AM, derek wrote:

On Jul 26, 6:52 pm, "Casey S. Greene"  wrote:

Does anyone have a hint for this (or an idea of where to get started in
the documentation)?  This seems relatively simple so my best guess is
that there is something that I am just missing.

Thanks!
-- Casey

On 07/22/2010 10:16 AM, Casey S. Greene wrote:


I am trying to figure out a reasonable way to filter using a queryset
within a ModelForm.



In a simple example, I have three models (A, B, and C).
C has many A and B
A and B have a many to many relationship.



Assume that some instances of C and instances of B already exist.



I am using the create_object generic view to allow users to create
instances of A but not to select associated Bs. I'm then using
update_object generic view to allow users to select the Bs associated
with A. I've created a class that inherits from forms.ModelForm that
defines the form. In that I have forms.ModelMultipleChoiceField() for
selecting associated Bs. What I want to do is use the queryset to filter
to only show those Bs that share C with this instance of A.



I am confused as to how to do this type of query while passing a
form_class from the update_object generic view.



I have tried doing this in __init__() but I get a TypeError that the
form is not callable when I try to pass arguments.



Thanks in advance for your help and time,
-- Casey


And another one:
http://code-blasphemies.blogspot.com/2009/04/dynamically-created-modelmultiplechoice.html



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Show mail instead user name in ForeignKey at admin

[Alexandre González]

Hi!

When I'm using user as ForeignField in some of my models I get a 
box with the username, can I override this with the mail instead the
username?

I've tested making a Proxy class, but I think that the proxy classes isn't
for this. I heard about MonkeyPatch but I don't know how to use it, or if
it's really the best way to do it.

Thanks!
Álex González

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and/or .pptx
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Re: django autocomplete search with jQuery

[Quenten Griffith]

I actually just set this up last weekend.  I used this link to
understand how to do it 
http://lethain.com/entry/2007/dec/01/using-jquery-django-autocomplete-fields/
I also found a plugin that takes most of the work off of you from
developing the feature.  
http://bitbucket.org/tyrion/django-autocomplete/overview

On Jul 30, 1:34 am, Joel Klabo  wrote:
> I have been looking around for some examples but I can't find anything
> recent. This is my first AJAX experience so I would love to just see
> an example because it's not quite making sense to me. Does anyone know
> of a tutorial? Or have some code samples I could check out? I have
> checked google btw.

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[SOLVED] Re: Django Dev server doesn't reflect changes

[barun]

On Jul 30, 10:33 am, Samuel Baldwin 
wrote:
> Try clearing any server or browser caches first.
>
> --
> Samuel Baldwin - logik.li

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Re: Raw sql and admin site

[Spoksss]

# model class
class Category(models.Model):
CATEGORY_SEPARATOR = "."

name = models.CharField(_('name'), max_length=255)
idname = models.CharField(_('idname'), max_length=255,
db_index=True, unique=True,)
prio = models.IntegerField(_('prio'), default=0)
description = models.TextField(_('description'), null=True,
blank=True)
materialised_path = models.TextField(_('materialised
path'),null=True, db_index=True, blank=True)
parent_category = models.ForeignKey("self", null=True,
blank=True,
 help_text=_('Set if category
should be child of other category'))
category_container = models.ForeignKey(CategoryContainer,
   verbose_name=_('category
container'),
   null=True, blank=True,
   help_text="In which box/
filter category should be visible")


# admin class
class CategoryAdmin(admin.Admin):
list_display =  ['id', 'name', 'parent_category',
'category_container', 'materialised_path']
list_display_links = ['id', 'name']
prepopulated_fields = {"idname": ("name",)}
ordering = ["-order_path"]

fieldsets = (
 ('Base data', {'fields': (('name', 'idname'),
'description',)}),
 ('Relations', {'fields': ('parent_category',
'category_container')}),
 ('Additional data', {'fields': (('prio'),),
   'classes': ('collapse',) }),
)


def queryset(self, request):
# below 2 lines work
# categories = models.Category.objects.all()
# or
# categories =
models.Category.objects.select_related('category_container').all()

# below doesn't work
categories = models.Category.objects.raw('SELECT * FROM
category ORDER BY materialised_path using
~<~')
return categories


I use materialised_path because I have list of categories and related
products
Category 1 data
name = 'Audi'
materialised_path = 1

Category 2 data
name = 'A4'
materialised_path = 1.2

Category 3 data
name = 'B7 (2004-2007)'
materialised_path = 1.2.3

Category 4 data
name = 'B7 (2004-2007) 1.9 TDI'
materialised_path = 1.2.3.4

Product 1 data
name = "AUDI A4 1.9 TDI 116 KM"
materialised_path = 1.2.3.4

Product 2 data
name = "AUDI A4 1.9 TDI 200 KM"
materialised_path = 1.2.3.4

so now i can get all products or children of category Audi or A4
children = Category.objects.filter(materialised_path__startswith =
audi_path)
products = Product.objects.filter(materialised_path__startswith =
audi_path)


My problem is to show ManyToMany relations between products and
categories in right order to easy use via Admin interface.
I need something like:
-Audi (materialised_path: 1)
---A4 (materialised_path: 1.2)
--B7 (2004-2007) (materialised_path: 1.2.3)

-BMW (materialised_path: 10)
---3 series (materialised_path: 10.11)

But postgresql without ~<~ operator gets me:
-Audi (materialised_path: 1)
-BMW (materialised_path: 10)
---3 series (materialised_path: 10.11)
---A4 (materialised_path: 1.2)
--B7 (2004-2007) (materialised_path: 1.2.3)

eg. Depth of materialised path is count of char "-"


so if i use sql with order by clause materialised_path i can get that
ordering, but in postgresql i need to use operator ~*~
to get correct ordering, because my database works with utf cluster.

And wheh I try to use the operator I got below error:
Database error
Something's wrong with your database installation. Make sure the
appropriate database tables have been created, and make sure the
database is readable by the appropriate user.

Any ideas what I do wrong?


>
> Can you show the exact code you are currently using to try and use
> this query in the admin, and the actual error you get?
> --
> DR.

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Re: Best way to present N items in table row for list

[Wadim]

On 29 июл, 12:08, Roald de Vries  wrote:

> First: list is a very unlucky name for a parameter, since it's the  
> type of []
>
> Second: list comprehension rules!
>
>      def groupListByRow(list):
>          return [lst[start:start+5] for start in range(0, len(lst), 5)]
>
> Cheers, Roald

Perfect This is why people use Python Simple, short, elegant

Finally i will use Roald's solution. The  transformation in template
is possible, but not so clear.
Thanks to all for their help.

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Re: field.label in template converts to lower case in 1.2.1

[Jeff Green]

Here is my form class

class StationInfo( forms.Form):

def __init__( self, *args, **kwargs):
super( StationInfo, self).__init__( *args, **kwargs)

request = args[1]
selecttuple = "choice0", "--Select One--"

userid = threadlocals.get_current_user()
user = '%s' % userid
userrec = User.objects.get(username=user)
projrecs = UserProj.objects.filter( User=userrec)
self.projlist = []
phaselist = []
for proj in projrecs:
self.projlist.append( proj.ProjectId)

# Get all the configurations for a station
stationrec = request.session['stationrec']
configlist1 = Configuration.objects.filter(
ConfigurationType='Station', AdditionalEquipFlag=False)
configlist2 = Configuration.objects.filter(
ConfigurationType='Station',
AdditionalEquipFlag=True).order_by('ConfigurationName')
configlist = list(chain(configlist1, configlist2))

for config in configlist:
config_str = '%s' % config
foundconfig = True
# Get station configuration record for given station
configstr_list = []
try:
stationconfiglist = StationConfig.objects.filter(

ConfigValueId__ConfigurationId__ConfigurationName=config.ConfigurationName,
EndDate__isnull=True,
StationId=stationrec
)
if len(stationconfiglist) == 0:
foundconfig = False
else:
for stationconfigrec in stationconfiglist:
configstr = '%s' % stationconfigrec.ConfigValueId
configstr_list.append( configstr)

except:
foundconfig = False

# Get choice list
choicelist = []
if config_str == 'Phase' or config_str == 'Project':
configvalues = ConfigValues.objects.filter(

ConfigurationId__ConfigurationName=config.ConfigurationName
).order_by( 'ConfigValue')
else:
configvalues = ConfigValues.objects.filter(

ConfigurationId__ConfigurationName=config.ConfigurationName,
ProjectId__in = self.projlist).order_by( 'ConfigValue')
if not foundconfig:
if config.MultiSelectFlag:
choicelist.append( selectmoretuple)
else:
choicelist.append( selecttuple)
select_fieldlist = []
allchoiceslist = []
for configrec in configvalues:
configvalstr = '%s' % configrec
allchoiceslist.append( configvalstr)
choicestr = "choice%s" % str( configrec.id)
choicetuple = choicestr, configrec.ConfigValue
if configrec.ConfigValue in configstr_list:
choicelist.insert( 0, choicetuple)
select_fieldlist.append( choicestr)
else:
choicelist.append( choicetuple)

for stationconfigrec in stationconfiglist:
configstr = str( stationconfigrec.ConfigValueId)
# Tried if not in list but it gave incorrect result
found = False
for choice in allchoiceslist:
if configstr == choice:
found = True
break
if not found:
choicestr = "choice%s" % str(
stationconfigrec.ConfigValueId.id)
choicetuple = choicestr, configstr
choicelist.insert( 0, choicetuple)
select_fieldlist.append( choicestr)

if config.MultiSelectFlag:

self.fields[config.ConfigurationName] =
forms.MultipleChoiceField(
choices=choicelist,
required=False,
widget =
MyMultiSelectWidget(initial=select_fieldlist ))


else:
print 'config name is ', config.ConfigurationName
self.fields[config.ConfigurationName] = forms.ChoiceField(
choices=choicelist,
required=False)
if config.ExpireFlag:
for stationconfigrec in stationconfiglist:
config_valuestr = '%s' % stationconfigrec.ConfigValueId
print 'config value string is ', config_valuestr
fieldname = ( config_valuestr + ' ' +
config.ConfigurationName +
' CalibrationDueDate (US/Central Time)')
print 'field name is ', fieldname
if stationconfigrec.ExpireDate == None:
self.fields[fieldname] = forms.SplitDateTimeField(
required=False,
   

Re: moving to django 1.2.1

[tiemonster]

I cover some of the new changes in Django 1.2 in this article:
http://www.tiemonster.info/a/24005/

Most of this information comes straight from the changelist. Others
were things that the core developers must have assumed were common
sense, but that I didn't think about when upgrading. If you run across
anything that's not on the list, let me know and I'll update the
article.

-Mark




On Jul 29, 3:41 am, knight  wrote:
> Thank you all for the links and advises.
> It really helps me.
>
> Regards, Alex A.
>
> On Jul 29, 10:32 am, Russell Keith-Magee 
> wrote:
>
> > On Wed, Jul 28, 2010 at 9:29 PM, Massimiliano Ravelli
>
> >  wrote:
> > > On Jul 28, 3:13 pm, knight  wrote:
> > >> What are the minimal changes that I need to make in order to work with
> > >> 1.2.1?
>
> > > Did you have a look 
> > > athttp://code.djangoproject.com/wiki/BackwardsIncompatibleChanges
> > > ?
>
> > As it says at the top of that wiki page, that page documents the
> > backwards incompatible changes that were made in the leadup to Django
> > 1.0.
>
> > If you want migration notes for Django 1.1 or 1.2, you should consult
> > the relevant release notes:
>
> > [1]http://docs.djangoproject.com/en/dev/releases/1.1/
> > [2]http://docs.djangoproject.com/en/dev/releases/1.2/
>
> > Yours,
> > Russ Magee %-)

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Re: Django Dev server doesn't reflect changes

[Samuel Baldwin]

Try clearing any server or browser caches first.

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Re: test's client.post says post but request.method says GET

[Phlip]

> What's the value of `self.url`? One possibility is that it doesn't end
> with a slash

Ends with a slash. I'm now checking the response goodies, like
response.status, to see if any other redirections happen!

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Re: Raw sql and admin site

[Daniel Roseman]

On Jul 29, 11:38 pm, Spoksss  wrote:
> Hi,
>
> I try to use raw sql in admin site, it is possible somehow?
>
> I use postresql and have some problem with ordering.
>
> I have in database something like:
> Category(id=1, name='first', parent_category=None,
> materialised_path='1')
> Category(id=2, name='child1 of first', parent_category=1,
> materialised_path='1.2')
> Category(id=1, name='child2 of first', parent_category=1,
> materialised_path='1.3')
> ...
> Category(id=10, name='second', parent_category=None,
> materialised_path='10')
>
> and now if i use normal sql 'select name, materialised_path from
> category order by materialised_path'
> and i get:
> first 1
> second 10
> child1 of first 1.2
> child2 of first 1.3
>
> but i need:
> first 1
> child1 of first 1.2
> child2 of first 1.3
> second 10
>
> because postgres is set to use utf collate, so in this moment i try
> use ~<~ operator in raw query:
>
> categories = models.Category.objects.raw('''SELECT "category"."id",
> "category"."name", "category"."idname", "category"."prio",
> "category"."description", "category"."materialised_path",
> "category"."parent_category_id", "category"."category_container_id"
> FROM "category  ORDER BY materialised_path using ~<~''')
>
> of course in def queryset(self, request) of CategoryAdmin.
>
> But I get database error, I think admin not supports raw query or I
> use it not correct in this place.
>
> Do You know how can I use "~<~" in admin site?
>
> regards

Can you show the exact code you are currently using to try and use
this query in the admin, and the actual error you get?
--
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Re: generate cache by visiting protected links

[Jirka Vejrazka]

> I still have 2 approaches i can take.

  I still believe that there is a 3rd option there - to bypass the
view / auth / login machinery completely :)


  If your primary goal is to cache the statistics and the statistics
does not depend on the user that is logged in (you did pass a user
with pk=1 in one of your previous emails), then you don't really need
to call any view to cache the data. You can call the function that
calculates the statistics (that would cache the data internally within
the function), then call this function from anywhere upon start of
your webserver (or cron job, as mentioned before).

  As long as you have a global cache (i.e. memcached), this would work
very nicely and you would not have to do any urllib2 login magic.

  Let me give you a short example:

def stats_top_callers_per_year(some_parameters_not_tied_to_a_specific_user):
cache_key = 'stats_top_callers_per_year'
data = cache.get(cache_key)
if data:
  return data
# calculate the data somehow
cache.set(cache_key, data)  #  <- set appropriate timeout there


Then have small script called before (or shortly after) your web
server start, that would import this function from your code, hence
calculating the statistics. Then, as long as you use memcached, your
web would use the cached statistics every time the
stats_top_callers_per_year() would be called frmo your views.

  Jirka

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Re: generate cache by visiting protected links

[Benedict Verheyen]

On 29/07/2010 18:48, David De La Harpe Golden wrote:
> On 29/07/10 16:58, Benedict Verheyen wrote:
> 
>> So calling a thread once from within a view is not safe ?
> 
> Depends on what your expectations are...
> 
> I haven't managed to dig up the paragraph discussing the issue that I
> recall existing. I've a strong feeling it was by Graham Dumpleton, he
> mentions in passing here:
> 
> http://groups.google.com/group/django-users/msg/e6e6b182fcd23d39
> 
> "You also don't have to deal with possibility of Apache killing off one
> its processes, which might contain running jobs, when it is recycling
> its processes."
> 
> but there was a somewhat more detailed writeup somewhere else.
> 
>> I'm planning on using Apache for production.
> 
> Not a reason not to, just a reason not to use that particular approach
> when doing so.
> 

Thanks for the info, i'll put the code outside the view in an external
file so i don't get unwanted behaviour.

Regards,
Benedict

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Re: generate cache by visiting protected links

[Benedict Verheyen]

On 29/07/2010 21:10, Jirka Vejrazka wrote:
>> That's why i asked on what Django uses as a key to set and entry in the 
>> cache.
>> If i generate the page and put it on the cache and then rely on Django to 
>> get it,
>> the key i use needs to be the same as Django uses otherwise the page isn't 
>> found in the
>> cache and the page is generated again and then cached by Django.
>> And that's just what i want to avoid.
>> I'm happy to leave the caching to Django, i just want to "help" cache it 
>> initially :)
> 
>  OK - now I see what you're trying to achieve :)
> 
>  What is slow for you? Is it the data calculation, or actualy
> constructing the HTML page from the data (read:context) and page
> template?
> 
>   If it's the former, I'd still cache inside the function that
> calculates the data (with a fixed string key) to get the "transparency
> of the program". Using the "hack" with the cache key you plan to use
> sounds clever, but a bit difficult to pick up if someone else needs to
> read and understand the code later.
> 
>   Just my 2 cents :)
> 
> Jirka
> 

The actual data calculation is slowest. The HTML page construction
isn't fast either but i can live with that.

Since putting the cache code inside my view could eventualy lead to problems,
i'm going to take it outside the view and put it in a seperate file.

I still have 2 approaches i can take.

The first using urllib2 to retrieve the page. I just tested this and i can
login to the site and open the correct url.
I'll paste the code here as it shows how to login to a site and setting
up a HTTPCookieProcessor so subsequent calls to the site don't complain
about not being logged in:


import urllib2, urllib

stats_url = 'http://calltracking:8000/management/statistics/top/user/yearly/'
login_url = "http://calltracking:8000/accounts/login/;
username = 'xyz'
password = '123'

if __name__ == "__main__":
# Log in to the site
o = urllib2.build_opener( urllib2.HTTPCookieProcessor() )
urllib2.install_opener(o)
p=urllib.urlencode({"username" : username, "password" : password})
f=o.open(login_url, p)
data=f.read()
f.close()

# Now open the protected statistics page
pagehandle = o.open(stats_url)
data = pagehandle.read()
pagehandle.close()

# Not necessary, but to verify:
fp = file(r"""c:\test.html""","w")
fp.write(data)
fp.close()


Second approach is to use Django to access the view function and store
the result in cache. You make a very good point about the transparency.
I haven't thought about it and it's a very good reason to set/get the
pages in cache as it would indeed be clear what i'm trying to achieve.
What i would do then is make a decorator where i cache the page or get it.

If i can get the urllib approach to fully work as intended, i can use the
default Django caching.
If not i'll use the 2nd approach and both would be from an external file
that i can then schedule.

Regards,
Benedict


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Re: LANGUAGES var isn't in all views

[Baurzhan Ismagulov]

On Fri, Jul 30, 2010 at 11:14:42AM +0200, Alexandre González wrote:
> If I add:
> 
> import settings
> LANGUAGES=settings.LANGUAGES
> 
> and return it in the render_to_response it works perfectly, but can I
> automatice this in all views?

Sure, it works for me without passing LANGUAGES explicitly. I'm afraid
you'll have to read render_to_response to find out why.

With kind regards,
Baurzhan.

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Re: LANGUAGES var isn't in all views

[Alexandre González]

If I add:

import settings
LANGUAGES=settings.LANGUAGES

and return it in the render_to_response it works perfectly, but can I
automatice this in all views?

On Fri, Jul 30, 2010 at 10:55, Baurzhan Ismagulov  wrote:

> On Thu, Jul 29, 2010 at 11:52:31PM +0200, Alexandre González wrote:
> > 42 {% for lang in LANGUAGES %}
> ...
> > It works perfectly in some webs, but in others the var LANGUAGES isn't
> > provide automatically, do i need to send it in the views?
>
> I don't know whether it's relevant, but do you {% load i18n %} in your
> templates? I also pass context_instance=RequestContext(request) from the
> views, works fine for me.
>
> With kind regards,
> Baurzhan.
>
> --
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>


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Re: LANGUAGES var isn't in all views

[Baurzhan Ismagulov]

On Thu, Jul 29, 2010 at 11:52:31PM +0200, Alexandre González wrote:
> 42 {% for lang in LANGUAGES %}
...
> It works perfectly in some webs, but in others the var LANGUAGES isn't
> provide automatically, do i need to send it in the views?

I don't know whether it's relevant, but do you {% load i18n %} in your
templates? I also pass context_instance=RequestContext(request) from the
views, works fine for me.

With kind regards,
Baurzhan.

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Re: test's client.post says post but request.method says GET

[Daniel Roseman]

On Jul 30, 1:18 am, Phlip  wrote:
> Django aficionados:
>
> Here's my test code:
>
>         from django.test.client import Client
>         self.client = Client()
>         from django.core.files.base import ContentFile
>         file_content = ContentFile(sample_inventory_update_cvs())
>         file_content.name = 'response.csv'
>
>         response = self.client.post( self.url,
>                                      data={'csv_file':file_content} )
>
> Disregard all that ContentFile nonsense (unless it's causing the bug).
>
> Inside the action code, I want to distinguish GETting from POSTing.
> One paints the page and the other absorbs new form data, as usual.
>
> However, when I print request.method, I get GET.
>
> Is this a bug in Client? or in (ahem) my comprehension?
>
> --
>   Phlip
>  http://c2.com/cgi/wiki?ZeekLand

What's the value of `self.url`? One possibility is that it doesn't end
with a slash, and you have the APPEND_SLASH setting set to True (the
default), so Django is redirecting from '/foo' to '/foo/'. A
redirected POST ends up as a GET.
--
DR.

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Re: UnicodeEncodeError

[Daniel Roseman]

On Jul 29, 11:27 pm, Eric  wrote:
> I am getting this error in the Django Administration section when I
> add an entry for a Dashboard object.
>
> When I return to the item in the Admin section, the record has been
> added and it displays correctly in the list of Dashboard objects. When
> I click on it, it shows correctly. Only when I add a new one or save
> one does that happend. And, I noticed that the history is not
> populated.
>
> The traceback is:
>
> Environment:
>
> Request Method: POST
> Request URL:http://127.0.0.1:8000/admin/dashboard/dashboard/1/
> Django Version: 1.2.1
> Python Version: 2.6.2
> Installed Applications:
> ['django.contrib.auth',
>  'django.contrib.contenttypes',
>  'django.contrib.sessions',
>  'django.contrib.sites',
>  'django.contrib.messages',
>  'django.contrib.admin',
>  'ManagementReview.dashboard']
> 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 "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/core/handlers/base.py" in get_response
>   100.                     response = callback(request,
> *callback_args, **callback_kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/contrib/admin/options.py" in wrapper
>   239.                 return self.admin_site.admin_view(view)(*args,
> **kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/utils/decorators.py" in _wrapped_view
>   76.                     response = view_func(request, *args,
> **kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/views/decorators/cache.py" in
> _wrapped_view_func
>   69.         response = view_func(request, *args, **kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/contrib/admin/sites.py" in inner
>   190.             return view(request, *args, **kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/utils/decorators.py" in _wrapper
>   21.             return decorator(bound_func)(*args, **kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/utils/decorators.py" in _wrapped_view
>   76.                     response = view_func(request, *args,
> **kwargs)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/utils/decorators.py" in bound_func
>   17.                 return func(self, *args2, **kwargs2)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/db/transaction.py" in
> _commit_on_success
>   299.                     res = func(*args, **kw)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/contrib/admin/options.py" in
> change_view
>   901.                 self.log_change(request, new_object,
> change_message)
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/contrib/admin/options.py" in log_change
>   443.             object_repr     = force_unicode(object),
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/site-packages/django/utils/encoding.py" in force_unicode
>   66.                 s = unicode(s)
> File "/Users/Eric/Documents/DjangoProjects/ManagementReview/../
> ManagementReview/dashboard/models.py" in __unicode__
>   47.         return u"%s" % self.name.decode('utf-8')
> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/
> python2.6/encodings/utf_8.py" in decode
>   16.     return codecs.utf_8_decode(input, errors, True)
>
> Exception Type: UnicodeEncodeError at /admin/dashboard/dashboard/1/
> Exception Value: ('ascii', u"Eric's Nifty D\xe4shboard Entry", 14, 15,
> 'ordinal not in range(128)')
>
> The model looks like this:
>
> class Dashboard(models.Model):
>     name = models.CharField("Dashboard name",max_length=100)
>     fiscal_year = models.IntegerField("Fiscal year")
>     region = models.CharField("Region", max_length=30)
>     review_date = models.DateField("Review date")
>     date_completed = models.DateField("Date Completed")
>
>     def __unicode__(self):
>         return u"%s" % self.name.decode('utf-8')
>
> Can somebody help me figure out what is going on here?
>
> Thanks
> Eric

This wouldn't necessarily cause that error, but your __unicode__
method is unnecessarily complicated. All model elements retrieved from
the db are already unicode, so there's no reason to 'decode' from
utf-8. The method 

RE: Re: Best way to find near people

[Henrik Genssen]

I use .extra(where=[where])

and something like this (measures km, not miles):
( 6378.137 * acos( cos( radians(long) ) * cos( radians( latitude ) ) * cos( 
radians( longitude ) - radians(lat) ) + sin( radians(long) ) * sin( radians( 
latitude ) ) ) ) < 10

latitude and logitude are db-fields, 6378.137 the radius of the earth, long/lat 
my current position, searches for objects in a 10 km circle

regards

Henrik


>reply to message:
>date: 30.07.2010 07:30:30
>from: "Jani Tiainen" 
>to: django-users@googlegroups.com
>subject: Re: Best way to find near people
>
>> On Jul 29, 2010, at 2:58 PM, Alexandre González wrote:
>> > Hi!
>> > 
>> > I'm searching near people in my app. I'm doing it a this way:
>> > 
>> > 37 people = Person.objects.all().exclude(user=request.user)
>> > 38
>> > 39 near_people = list()
>> > 40 for person in people:
>> > 41 if self.is_near(me.coordinates, person.coordinates):
>> > near_people.append(person)
>> > 
>> > Now, I'm getting all the the Person objects. This is a inefficient way.
>> > 
>> > The coordinates are latitude/longitude coordinates, so I think in test
>> > the variation and get only latitude +/- 1 and longitude +/- 1 and after
>> > this, do the test exactly (the funcion is_near).
>> > 
>> > But instead this, can I "draw" a circle and search only Person objects
>> > inside it?
>> 
>> I'm not sure what database you are using, but if you are using PostgreSQL,
>> it has built-in geometric operators specifically for this kind of thing. 
>> You might have to drop down into SQL, but in 1.2, that's nice and easy.
>> 
>> The PostgreSQL documentation on this is at:
>> 
>>  http://www.postgresql.org/docs/8.4/interactive/datatype-geometric.html
>> --
>> -- Christophe Pettus
>>x...@thebuild.com
>
>Or if spatial operations are really needed, why not to use real spatial 
>database and GeoDjango (django.contrib.gis). Spatialite, Postgis, Mysql or 
>oracle. All supports at spatial to some extent. And there you can do easily 
>simple filtering:
>
>Person.objects.filter(person_coordinates__dwithin(me.coordinates, distance))
>
>..and geodjango + spatial engine behind it will take care of all that complex 
>stuff.
>
>Note: you can still use GEOS parts from geodjango to do calculations so you 
>don't have to reinvent wheel if you want to keep coordinates as you already 
>have.
>
>-- 
>
>Jani Tiainen
>
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Re: values with distinct not working as expected

[tuxcanfly]

Thanks, that works!

But I don't understand why I should order_by to get distinct values.

On Jul 29, 3:59 pm, Subhranath Chunder  wrote:
> If you don't want to uniquify yourself, then why not simply do:
> User.objects.values('username').order_by('username').distinct()
>
> or, going the way that were already heading, it would be:
> Visitor.objects.values('user__username').order_by('user__username'').distin 
> ct()
>
> Thanks,
> Subhranath Chunder.
>
>
>
> On Thu, Jul 29, 2010 at 2:29 PM, tuxcanfly  wrote:
> > I have this:
>
> > class Visitor(models.Model):
> >    user = models.ForeignKey(User)
> >    ..
> >    ..
>
> > I'm trying to get the distinct usernames, so I did this:
>
> >    Visitor.objects.values("user__username").distinct()
>
> > But this stil gives me duplicate usernames. Of course I could use a
> > flat values_list  and uniquify the result, but...
>
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Re: Django Dev server doesn't reflect changes

[Kenneth Gonsalves]

On Friday, July 30, 2010 10:55:13 am barun wrote:
> I've restarted the server, browser. Do I need to do anything else?

browser cache?
-- 
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Kenneth Gonsalves
Senior Associate
NRC-FOSS at AU-KBC

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