DJANGO - Problem Using Forms

Question

DJANGO - Problem Using Forms

So, I have a form class in my forms.py file that I will use to create a set of forms with a variable number of forms (the client will set the number of forms to display).

The form class would be like this:

forms.py

from django import forms

class example(forms.Form):

    CHOICES = [('choice1', 'choice1'), ('choice2', 'choice2')]

    field1 = forms.IntegerField()
    field2 = forms.DateTimeField()
    field3 = forms.ChoiceField(choices = CHOICES)

And then in my views.py file I have something like this:

views.py

from myproject.forms import example
from myproject.models import example_model


from django.forms.formsets import formset_factory
from django.http.response import HttpResponseRedirect
from django.shortcuts import render_to_response

def add_example_form(request, model_id, num_forms): # the num_forms is passed previously from another view via URL

    mymodel = example_model.objects.get(pk = model_id) #I'll use the formset for filling sa field of a model which couldn't be filled in the creation of the model for whatever reason
    data1 = None
    data2 = None
    data3 = None

    data_total = []

    exampleFormset = formset_factory(example, extra = int(num_forms))

    if request.method == 'POST':

        formset = exampleFormset(request.POST)
        if formset.is_valid():

            for form in formset:
                data1 = form.cleaned_data['field1']
                data2 = form.cleaned_data['field2']
                data3 = form.cleaned_data['field3']

                data_total.append([data1, data2, data3])

            #Then I save these fields into a field of a model that I have saved on my main database
            mymodel.somefield = data_total
            mymodel.save()

            return HttpResponseRedirect('/someURL/')

        else:
            raise Exception('The introduced fields are wrong!')

    else:
        formset = exampleFormset()

    return render_to_response('someURL/example.html',{'formset': formset}, context_instance = RequestContext(request))

In my html template file, I call the formset using the following format:

example.html

<html>
    <body>
        <h2>Fill the forms:</h2>
        <form method='post' action=''> {% csrf_token %}
            {{ formset.management_form }}
            {% for form in formset %}

                {{ form }} <br>

            {% endfor %}
            <p><input type='submit' value='Submit'/></p>
        </form>
    </body>
</html>

So when I start the server and I connect to the client to this view everything seems to work correctly, it loads the correct number of forms with is_valid () to True and the HTTP POST request seems free of errors. The problem is that the information I am getting from the submitted formset is wrong: it only takes the information about the LAST form fields and copies it to the rest of the forms, but it only encounters DateTimeField and ChoiceField, IntegerField fields are correct. For example, this would be my view from a client:

Fill out the forms: (number of forms = 2)

field1: 1

field2: 2001-01-01 01:01:01

field3: (we select choice "choice1")

field1: 2

field2: 2002-02-02 02:02:02

field3: (we choose choice "choice2")

Add to

When the submit button is clicked, the whole process looks fine, but the data received by the formset in field2 and field3 of both forms is one of the second kind, so I actually saved the following content in my database:

field1: 1

field2: 2002-02-02 02:02:02

field3: 'choice2'

field1: 2

field2: 2002-02-02 02:02:02

field3: 'choice2'

I can't figure out where the problem is here because the code is pretty simple or if it's a known django bug (which I don't think so) any help would be so much appreciated. Thanks in advance.

+3

python django forms formset

Albert montes 05 dec. At 9:58 am

source to share