On Monday, January 10, 2011 2:56:42 PM UTC, hank23 wrote:
>
> This is my first attempt at trying to code a form and use it in a
> view, so I've probably got something wrong. At this point I just
> wanted to produce the screen with all of the fields displayed on it,
> just to see if I have things coded correctly to display the screen the
> first time.
>
> I'm not getting any error but I'm also not getting everything on my
> screen which I think I should be getting. The screen should display a
> title, then a message, a dropdown box(pollquestions), a button, and
> finally another message. At least it should as long as I have my html
> coded properly. My form is defined this way:
>
> class AddChoiceForm(forms.Form):
> infomessage = forms.CharField(max_length=200)
> pollquestions =
> forms.ModelChoiceField(queryset=Poll.objects.all(), required=True,
> label='Poll Questions', initial='Please select a poll question',
> help_text='Select a poll question.',
> error_messages={'required': 'Please select a poll question!',
> 'invalid_choice': 'Cannot select initial value!'},
> widget=forms.Select(attrs={'name': 'pollquestions',
> 'id':'pollquestions', 'size':'1', 'type':'select-one' }))
> confirmmessage = forms.CharField(max_length=200)
> newchoice = forms.CharField(max_length=200)
>
>
> my addchoice.html screen is defined this way:
>
> <h1>Add Poll Choice Screen</h1>
>
> <form action="/polls/addchoice/" method="POST">
> {% csrf_token %}
>
> {{ infomessage }}
>
> <br /><br />
>
> {{ pollquestions }}
>
> <br /><br />
> <input type="submit" value="addchoice" />
> <br /><br />
>
> {{ confirmmessage }}
>
> </form>
>
> and my view is coded this way:
>
> def addchoice(request):
> polls = Poll.objects.all()
> pollcount = Poll.objects.all().count()
> if pollcount > 0 :
> message = "Number of polls passed to form was " + str(pollcount)
> else:
> message = "No polls passed in to form."
>
> confirm = "Nothing added."
>
> data = {'pollquestions': polls, 'infomessage': message,
> 'confirmmessage': confirm }
> form = AddChoiceForm(data)
> dctnry = {'form': form, 'data': data}
> return render_to_response('polls/addchoice.html',
> dctnry,
>
> context_instance=RequestContext(request))
>
>
> I would appreciate any help or suggestions, for figuring this out.
> Thanks.
>
There are a number of things wrong here.
You've got two things called 'pollquestions'. One is a field in the form.
Since you're passing the form into the template context with the key 'form',
you access it in the template as {{ form.pollquestions }}. The other thing
called 'pollquestions' is a list of all the polls in your database. You've
put that inside a dictionary which you're passing into the context under the
key 'data', so if you wanted to access that, you'd do {{ data.pollquestions
}} - or, more likely, you'd want to iterate through with {% for poll in
data.pollquestions %}. However I suspect you are only interested in the form
field here.
Similarly, you've got two things called 'infomessage' and 'confirmmessage' -
one is a field, and one is a string with a message. This time, I suspect you
are interested in the strings - which again are accessed via {{
data.infomessage }} and {{ data.confirmmessage }}. If you don't want the
user to actually be able to enter these, don't define them as fields in the
form - you can reference them directly in the template as I have shown.
Next, this line:
form = AddChoiceForm(data)
should only be used when you have data posted from the user. Since you're
not doing that yet, just use
form = AddChoiceForm()
Finally, you're probably overspecifying the pollquestions field in the form.
Most of what you have is the default anyway, and other things are invalid:
for example, you can't specify 'initial' as text, it has to be the ID of one
of the possible options. Just use:
pollquestions = forms.ModelChoiceField(queryset=Poll.objects.all(),
required=True, label='Poll Questions', help_text='Select a poll question.')
--
DR.
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