CODEWITHSUNDEEP
djangodjango-forms
Brandon Bertelsen
Brandon Bertelsen

Reputation: 44638

Trouble setting up forms

Let's say we have a basic Contact and Call log model:

Update: It seems my initial question did not provide enough detail to explain my problem, I've updated it with a more complete example and details about what I want.

# Models.py

class Contact(model.Models):
    First = ...
    Last = ...
    Phone = ...

class Log(model.Models):
    contact = fields.Foreignkey(Contact)
    date = ...
    notes = ...

# urls.py

url(r'^logcall/(?P<contact_id>\d+)/$', 'myapp.views.log_call',name='log_call'),

# views.py

def log_call(request, contact_id):
    formset = modelform_factory(Log)
    form = formset(queryset=Log.objects.none(),initial={'contact':contact_id})
        if request.method == 'POST':
            form = formset(request.POST,request.FILES)
        if form.is_valid():
                form.save()
        return HttpResponseRedirect('/some/place')
    else:
        form = formset(queryset=Log.objects.none(), initial = {'contact':respondent_id,})
    return render_to_response('myform.html', {'formset':form,})

# myform.html

<form method="post" action="">
{{ formset.management_form }}
{% for form in formset %}
{{ form.id }}
{{ form.callid.as_hidden }}
{{ form.contact.as_hidden }}
{{ form.date }}
{{ form.notes }}
{% endfor %}
<button>Submit</button>
</form>

What I get is: 

<form method="post" action="">
<select id="id_form-0-contact" name="form-0-contact">
<option value="" selected="selected">---------</option>
<option value="1011">1011</option>
<option value="31736">31736</option>
<option value="19729">19729</option>
<option value="8818">8818</option>
<option value="19731">19731</option>
<option value="1468">1468</option>
... and so on
    ...
<button>Submit</button>
</form>

What I WANT from this is the following: 

<form method="post" action="">
<input type="hidden" id="id_form-0-contact" name="form-0-contact" value="contact_id" />
...
<button>Submit</button>
</form>

So, everytime I load the page - it calls all the relationship data when I only need it to include a hidden value for the contact the identifies the id based on the value passed from the URL.

Upvotes: 0

Views: 81

Answers (2)

Alireza Savand
Alireza Savand

Reputation: 3488

You want to have a view to update your model, What you're looking for is UpdateView

A view that displays a form for editing an existing object, redisplaying the form with validation errors (if there are any) and saving changes to the object. This uses a form automatically generated from the object’s model class (unless a form class is manually specified). -- Django docs

Example:

from django.views.generic.edit import UpdateView
from myapp.models import Author

class AuthorUpdate(UpdateView):
    model = Author

These might be helpful too:

Upvotes: 0

Glyn Jackson
Glyn Jackson

Reputation: 8354

You load the form with the data...

MyModelForm(instance=myInstanceModel)

You can make use of instance parameter to instantiate form which will put initial data in the form from that object, instead of providing dict of attributes.

another example 

object = myModel.objects.get(id=1)
MyModelForm(instance=object)

Upvotes: 1

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