Accessing Model field from ModelForm?
I have a basic form that shows what a person entered when it is
submitted. However, it shows up as a form.CharField (textbox) instead
of model.CharField. Is there a way to access the model's saved data
from the Forms? Also does form_for_model (http://www.djangobook.com/en/
1.0/chapter07/) no longer exist? I can't get it to load.
models.py:
from django.db import models
from django.forms import ModelForm
class Question(models.Model):
question = models.CharField('Question', max_length = '200',
primary_key = True)
pub_date = models.DateField(auto_now_add = True)
def __unicode__(self):
return self.question
class Choice(models.Model):
Question = models.ForeignKey(Question)
choice = models.CharField(max_length = '200')
class Questionform(ModelForm):
class Meta:
model = Question
class Choiceform(ModelForm):
class Meta:
model = Choice
view:
from qotd.models import *
from django.shortcuts import render_to_response
from django.http import HttpResponseRedirect
def contact(request, question):
if request.method == 'POST': # If the form has been submitted...
form = Questionform(request.POST) # A form bound to the POST
data
if form.is_valid():
form.save()
#return HttpResponseRedirect('results.html', {'form': form}
else:
form = Questionform()
return render_to_response('contact.html', {
'form': form
})
template:
{% if not form.is_valid %}
{{ form.as_p }}
{% endif %}
{% if form.is_valid %}
{{ form.question }}
{% endif %}
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Re: Accessing Model field from ModelForm?
Thanks, that's a big help.
On Nov 1, 5:14 am, Daniel Roseman <[EMAIL PROTECTED]>
wrote:
> On Nov 1, 5:33 am, killsto <[EMAIL PROTECTED]> wrote:
>
>
>
> > I have a basic form that shows what a person entered when it is
> > submitted. However, it shows up as a form.CharField (textbox) instead
> > of model.CharField. Is there a way to access the model's saved data
> > from the Forms? Also does form_for_model (http://www.djangobook.com/en/
> > 1.0/chapter07/) no longer exist? I can't get it to load.
>
>
>
> > from qotd.models import *
> > from django.shortcuts import render_to_response
> > from django.http import HttpResponseRedirect
>
> > def contact(request, question):
> > if request.method == 'POST': # If the form has been submitted...
> > form = Questionform(request.POST) # A form bound to the POST
> > data
> > if form.is_valid():
> > form.save()
> > #return HttpResponseRedirect('results.html', {'form': form}
>
> > else:
> > form = Questionform()
> > return render_to_response('contact.html', {
> > 'form': form
> > })
>
> The only thing you need to do that you're not doing is to actually
> pass the instance of Question (or Choice) to the form when you
> instantiate it.
>
> Assuming that 'question' is the PK of the Question object:
>
> def contact(request, question):
> question_obj = Question.objects.get(pk=question)
> if request.method == 'POST':
> form = Questionform(request.POST, instance=question_obj)
> if form.is_valid():
> form.save()
> return HttpResponseRedirect('/submission/')
> else:
> form = Questionform(instance=question_obj)
> return render_to_response('contact.html', {
> 'form': form
> })
>
> Note that HttpResponseRedirect takes a *URL*, not a template/context.
> It tells the user's browser to request a different URL so that they
> can't submit the form twice.
> --
> DR.
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Best way for making a "Poll"?
First of all, I know the tutorial supplies somewhat of a poll, and I've been through it. What I want to do is make an app that has one poll (or question) of the day that someone can edit from the admin interface. Each question has 4 choices. Also, there will not be user registration, just a field to input your name. I also want to use ModelForm. Now, should I have each question have a ManyToMany with choices, or each choice have a ForeignKey with a question? Initially I thought a ManyToMany would be good since its widget is multiple choice field in ModelForm. But, it also showed up as a multiple choice (with no choices yet!) in the admin interface. So I decided to go with the way the tutorial had it setup, but I got some error about a missing column when I tried to save a choice. (I'm using sqlite3 and the SVN version) It also did that when I tried to have it stacked inline with question. I tried flushing, resyncing the db, and using django-evolution (after it didn't work). So I'm deciding to start all over. How can I get choices, a CharField I guess, to show up as radio select widgets in a form? Also, at the bottom of the page I want to show each (in standard text) Question of the day and its choices. I'm assuming that's just simply reading CharFields and displaying them? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~--~~~~--~~--~--~---
Manipulating post data before sending?
I'm making a small app which is kind of like a blog. I have an Entry
class which has "ForeignKey(User)" as one of its members. I'm using
ModelForm to generate the form and I'm excluding the User ForeignKey
because it will just ask for you to pick a user from a drop-down
list.
Where do I tell it that the User ForeignKey should be request.user?
I've tried using "initial = {'author' : request.user}". That
generates an "author_id may not be null." Any ideas?
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Re: Manipulating post data before sending?
Thanks, that worked.
On Jul 10, 1:44 pm, Jonathan Buchanan
wrote:
> > I'm making a small app which is kind of like a blog. I have an Entry
> > class which has "ForeignKey(User)" as one of its members. I'm using
> > ModelForm to generate the form and I'm excluding the User ForeignKey
> > because it will just ask for you to pick a user from a drop-down
> > list.
>
> > Where do I tell it that the User ForeignKey should be request.user?
> > I've tried using "initial = {'author' : request.user}". That
> > generates an "author_id may not be null." Any ideas?
>
> Use the "commit" argument to the ModelForm's save() method to get a
> hold of the resulting model instance without saving it, make any
> changes you want to the instance and then call save() on it yourself.
>
> There's an example of this in the docs:
>
> http://docs.djangoproject.com/en/dev/topics/forms/modelforms/#the-sav...
>
> Regards,
> Jonathan.
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