2014-06-14 19:24 GMT+02:00 Frankline <fraogo...@gmail.com>:
> I am a Django newbie working with Django CBVs and having difficulty setting
> initial values for my ModelForm. To give an overview, I am trying to learn
> by creating a simple messaging app.
>
> Here is my code:
>
> models.py
> ---------------------------------------------------------
>
> import datetime
> from django.contrib.auth.models import User
> from django.db import models
> from django.utils.translation import ugettext_lazy as _
> from django.utils import timezone
>
> class Message(models.Model):
> subject = models.CharField(_("Subject"), max_length=100)
> body = models.TextField(_("Body"))
> sender = models.ForeignKey(User, db_index=True,
> related_name='sent_messages')
> recipient = models.ForeignKey(User, db_index=True,
> related_name='received_messages')
> parent_msg = models.ForeignKey('self', related_name='next_messages',
> null=True, blank=True)
>
>
> forms.py
> ---------------------------------------------------
>
> from django.forms import ModelForm
> from .models import Message
>
> class MessageForm(ModelForm):
> class Meta:
> model = Message
> exclude = ('sender', 'recipient', 'parent_msg',)
>
>
> views.py
> --------------------------------------------------
>
> class MessageCreateView(CreateView):
> form_class = MessageForm
> model = Message
> template_name = 'messages/compose.html'
>
> def form_valid(self, form):
> form.instance.sender = self.request.user
> return super(MessageCreateView, self).form_valid(form)
>
> urls.py
> ---------------------------------------------------------------------------
>
> ...
> url(r'^compose/(?P<recipient>[\w.@+-]+)/$', MessageCreateView.as_view(),
> name='messages_compose_to'),
> ...
>
> As you can see from the urls.py file, I am using the 'recipient' parameter
> as such: http://localhost:8000/members/compose/someusername
>
> Now my problem is that I wish to open the compose message view, and
> initialize the recipient field by getting the username from the URL, then
> using the username from the url to get User with that particular username,
> and instantiate the form with it.
>
> Where do I do this, in the view itself or in the form? Unless their is a
> better way of how to handle this.
Hi,
you need overriding of get_initial [1] method into your MessageCreateView
[1]
https://docs.djangoproject.com/en/1.6/ref/class-based-views/mixins-editing/#django.views.generic.edit.FormMixin.get_initial
Simone
--
Simo
- Registered Linux User #395060
- Software is like sex, it is better when it is free --> Linus B. Torvalds
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