Dynamic Nested Formsets?
I have 3 Models:
class Workflow(models.Model):
name = models.CharField(max_length=255)
company = models.ForeignKey(Company)
class Meta:
unique_together = ('name', 'company')
class Milestone(models.Model):
workflow = models.ForeignKey(Workflow)
tasks = models.ManyToManyField(Task)
class Task(models.Model):
task = models.CharField(max_length=255)
How could I create a form that allows me to add many milestones to a
workflow and many tasks to a milestone?
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Using class based views to autoassign certain values?
When I try to add new Attendee with a class based view I get the error
matriculation_attendee.event_id may not be NULL with this code:
class Event(models.Model):
""" Model representing an event """
place = models.ForeignKey(Place, blank=True, null=True)
slug = AutoSlugField(populate_from=('company', 'name'))
name = models.CharField(max_length=200)
company = models.ForeignKey(Company)
description = models.TextField(null=True, blank=True)
start_date = models.DateField()
end_date = models.DateField()
status = models.CharField(max_length=200, null=False, blank=True)
currency = models.CharField(max_length=4,
choices=currency_choices)
payment_gateway = models.ForeignKey(PaymentGateway, blank=True,
null=True)
def registered(self):
return self.attendee_set.count()
def active(self):
return self.attendee_set.filter(is_active=True).count()
def cancelled(self):
return self.attendee_set.filter(is_active=False).count()
def __unicode__(self):
return self.name
class Meta:
ordering = ['name']
def save(self, *args, **kwargs):
if self.end_date < datetime.now().date():
self.status = 'Closed'
elif datetime.now().date() >= self.start_date:
self.status = 'Onsite'
else:
self.status = 'Active'
super(Event, self).save(*args, **kwargs)
class Attendee(CommonDataInfo):
#TODO: Add prefix and suffix choices
event = models.ForeignKey(Event)
prefix = models.CharField(max_length=300, blank=True, null=True)
first_name = models.CharField(max_length=300)
last_name = models.CharField(max_length=300)
suffix = models.CharField(max_length=300, blank=True, null=True)
badge_name = models.CharField(max_length=300, blank=True,
null=True)
birthdate = models.DateField(blank=True, null=True)
reg_date = models.DateTimeField(default=datetime.now())
email = models.CharField(max_length=300, blank=True, null=True)
gender = models.CharField(max_length=1, choices=gender_choices,
blank=True,
null=True)
location = models.ForeignKey(Place, blank=True, null=True)
def __unicode__(self):
return "%s %s" % (self.first_name, self.last_name)
class Meta:
ordering = ['last_name', 'first_name', 'is_active']
class EventContextMixIn(object):
def get_context_data(self, **kwargs):
event = get_object_or_404(Event,
slug=self.kwargs['event_id'])
# Call the base implementation first to get a context
context = super(EventContextMixIn,
self).get_context_data(**kwargs)
context['event'] = event
return context
def get_form_kwargs(self, **kwargs):
context = self.get_context_data()
kwargs = super(EventContextMixIn,
self).get_form_kwargs(**kwargs)
kwargs['initial']['event'] = context['event']
return kwargs
class EventCreateView(EventContextMixIn, CreateView):
pass
class EventUpdateView(EventContextMixIn, UpdateView):
pass
class EventListView(EventContextMixIn, ListView):
context_object_name = "model_list"
class EventDetailView(EventContextMixIn, DetailView):
context_object_name = 'model'
url(r'^events/(?P[-\w]+)/attendees/add/$',
EventCreateView.as_view(form_class=AttendeeForm,
template_name='matriculation/attendee_update.html'),
name='matriculation_attendees_add'),
Am I using this wrong? I'm basically trying to set this up so I the
url defines the event and then I can create models for the specific
event.
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Re: Need a tip on how to architect this code to be more extensible
I still haven't came up with a creative solution on this, is there
anyone that might be able to give me some ideas?
On Nov 29, 12:25 am, Sontek <son...@gmail.com> wrote:
> I wrote this open source project that allows you to use the django
> admin pop-ups in your own views but I want to give it the ability to
> have the view extended so they can pass excludes and instances to the
> form before its display... currently the code looks like this:
>
> from django.contrib.auth.decorators import login_required
> from django.shortcuts import render_to_response
> from django.template import RequestContext
> from django.http import HttpResponse
> from django.utils.html import escape
> from tekextensions.forms import get_model_form, normalize_model_name
>
> def add_new_model(request, model_name, form=None):
> normal_model_name = normalize_model_name(model_name)
>
> if not form:
> form = get_model_form(normal_model_name)
>
> if request.method == 'POST':
> form = form(request.POST)
> if form.is_valid():
> try:
> new_obj = form.save()
> except forms.ValidationError, error:
> new_obj = None
>
> if new_obj:
> return HttpResponse('
Need a tip on how to architect this code to be more extensible
I wrote this open source project that allows you to use the django
admin pop-ups in your own views but I want to give it the ability to
have the view extended so they can pass excludes and instances to the
form before its display... currently the code looks like this:
from django.contrib.auth.decorators import login_required
from django.shortcuts import render_to_response
from django.template import RequestContext
from django.http import HttpResponse
from django.utils.html import escape
from tekextensions.forms import get_model_form, normalize_model_name
def add_new_model(request, model_name, form=None):
normal_model_name = normalize_model_name(model_name)
if not form:
form = get_model_form(normal_model_name)
if request.method == 'POST':
form = form(request.POST)
if form.is_valid():
try:
new_obj = form.save()
except forms.ValidationError, error:
new_obj = None
if new_obj:
return HttpResponse('opener.dismissAddAnotherPopup(window, "%s", "%s");' % \
(escape(new_obj._get_pk_val()), escape(new_obj)))
else:
form = form()
page_context = {'form': form, 'field': normal_model_name}
return render_to_response('popup.html', page_context,
context_instance=RequestContext(request))
So I'd still like to allow them to get the automatic adding of the
javascript httpresponse and autocreation of the form using the
model_form_factory but would allow them to get the form and pass
instance=... and exclude = ('whatever', )so that they can
customize/tweak the generated form
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Re: Model Form crashing on Foreign Key
On Jan 10, 6:17 pm, Sontek <son...@gmail.com> wrote: > On Jan 10, 12:23 pm, Sontek <son...@gmail.com> wrote: > > > So I'm trying to create a new feed within the Admin page and its > > crashing with the error IntegrityError: lifestream_feed.lifestream_id > > may not be NULL, the call stack is... form['lifestream'] is set but > > form.instance.lifestream is not. Here is the code: This is a bug in HEAD -- 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. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
Re: Model Form crashing on Foreign Key
On Jan 10, 12:23 pm, Sontek <son...@gmail.com> wrote:
> So I'm trying to create a new feed within the Admin page and its
> crashing with the error IntegrityError: lifestream_feed.lifestream_id
> may not be NULL, the call stack is... form['lifestream'] is set but
> form.instance.lifestream is not. Here is the code:
>
Its not returning the empty returns, its reaching the return
self.cleaned_data:
-> return self.cleaned_data
(Pdb) list
85 self.cleaned_data['name'] = feed_info['title']
86 self.instance.name = self.cleaned_data['name']
87 self.cleaned_data['domain'] = get_url_domain(feed_url)
88 self.instance.domain = self.cleaned_data['domain']
89
90 -> return self.cleaned_data
91
92 class FeedAdmin(admin.ModelAdmin):
93 list_display= ('name', 'lifestream', 'domain',
'fetchable')
94 list_filter = ('domain', 'lifestream')
95 actions = ['make_fetchable', 'make_unfetchable']
(Pdb) self.cleaned_data
{'url': u'http://twitter.com/statuses/user_timeline/6166742.rss',
'domain': u'twitter.com', 'lifestream': , 'name':
u'Twitter / sontek', 'plugin_class_name':
u'lifestream.plugins.twitter.TwitterPlugin'}
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Model Form crashing on Foreign Key
So I'm trying to create a new feed within the Admin page and its
crashing with the error IntegrityError: lifestream_feed.lifestream_id
may not be NULL, the call stack is... form['lifestream'] is set but
form.instance.lifestream is not. Here is the code:
class FeedCreationForm(forms.ModelForm):
class Meta:
model = Feed
exclude = ['name', 'domain', 'fetchable']
def parse_feed(self, feed_url):
feed = feedparser.parse(feed_url)
# Does the feed have errors
if feed['bozo']:
if feed['feed'].has_key("links"):
for link in feed['feed']['links']:
if link["type"] == "application/rss+xml":
feed = self.parse_feed(link['href'])
if not feed['bozo']:
return feed
else:
return feed
return None
def clean(self):
"""
Checks to make sure a feed url is valid and gets the feed
title
and domain.
"""
feed_url = self.cleaned_data.get('url')
if not feed_url:
# Feed url was not validated by the field validator
return
feed = self.parse_feed(feed_url)
if feed:
feed_url = feed['url']
self.cleaned_data['url'] = feed_url
else:
# the feed was not parsed correctly.
import logging
self._errors['url'] = ErrorList(["This is not a valid
feed: %s" % feed['bozo_exception']])
logging.error(feed['bozo_exception'])
# This field is no longer valid. Remove from cleaned_data
del self.cleaned_data['url']
return
# Check if the feed has a title field
feed_info = feed.get('feed')
if not feed_info.get('title'):
self._errors['url'] = ErrorList(["This is not a valid
feed: The feed is empty"])
# This field is no longer valid. Remove from cleaned_data
del self.cleaned_data['url']
return
self.cleaned_data['name'] = feed_info['title']
self.instance.name = self.cleaned_data['name']
self.cleaned_data['domain'] = get_url_domain(feed_url)
self.instance.domain = self.cleaned_data['domain']
return self.cleaned_data
class FeedAdmin(admin.ModelAdmin):
list_display= ('name', 'lifestream', 'domain', 'fetchable')
list_filter = ('domain', 'lifestream')
actions = ['make_fetchable', 'make_unfetchable']
add_form = FeedCreationForm
model = Feed
def make_unfetchable(self, request, queryset):
queryset.update(fetchable=False)
make_unfetchable.short_description = _(u"Mark as unfetchable")
def make_fetchable(self, request, queryset):
queryset.update(fetchable=True)
make_fetchable.short_description = _(u"Mark as fetchable")
def add_view(self, request):
if not self.has_change_permission(request):
raise PermissionDenied
if request.method == 'POST':
form = self.add_form(request.POST)
if form.is_valid():
new_feed = form.save()
msg = _('The %(name)s "%(obj)s" was added
successfully.') % {'name': 'user', 'obj': new_feed}
self.log_addition(request, new_feed)
if "_addanother" in request.POST:
request.user.message_set.create(message=msg)
return HttpResponseRedirect(request.path)
elif '_popup' in request.REQUEST:
return self.response_add(request, new_feed)
else:
request.user.message_set.create(message=msg + ' '
+ ugettext("You may edit it again below."))
# TODO: use reversed url
return HttpResponseRedirect('../%s/' %
new_feed.id)
else:
form = self.add_form()
return render_to_response('admin/lifestream/feed/
add_form.html', {
'title': _('Add feed'),
'form': form,
'is_popup': '_popup' in request.REQUEST,
'add': True,
'change': False,
'has_add_permission': True,
'has_delete_permission': False,
'has_change_permission': True,
'has_file_field': False,
'has_absolute_url': False,
'auto_populated_fields': (),
'opts': self.model._meta,
'save_as': False,
#'username_help_text': self.model._meta.get_field
('username').help_text,
'root_path': self.admin_site.root_path,
'app_label': self.model._meta.app_label,
}, context_instance=template.RequestContext(request))
def queryset(self, request):
return self.model.objects.feeds()
admin.site.register(Feed, FeedAdmin)
class Lifestream(models.Model):
"""
A lifestream. Lifestreams can be created per user.
"""
site = models.ForeignKey(Site,
