django: How to use inlineformset within the formwizard? - django

Question

I'm displaying two separate sample projects. The first is a Contact related and shows the principle of using the formwizard. The second is an ingredients to recipes related project which shows how to use inlines within a form. I want inlines to be in my formwizard the same way they work in a normal form.
I have a formwizard multistep form working. It is based off the example here. I've changed it slightly to use modelform.
models.py
from django.db import models
# Create your models here.
class Contact(models.Model):
subject = models.CharField(max_length=50)
sender = models.EmailField()
def __unicode__(self):
return self.subject
class Contact2(models.Model):
message = models.TextField(max_length=500)
def __unicode__(self):
return self.message
forms.py
class ContactForm1(forms.ModelForm):
class Meta:
model = Contact
class ContactForm2(forms.ModelForm):
class Meta:
model = Contact2
class ContactWizard(FormWizard):
#property
def __name__(self):
return self.__class__.__name__
def done(self, request, form_list):
# do_something_with_the_form_data(form_list)
return HttpResponseRedirect('/done/')
urls.py
(r'^contact/$', ContactWizard([ContactForm1, ContactForm2])),
Separately I have inlines being generated into another form. I'm doing this via inlineformset_factory in my view. This is not connected to the formwizard example above. This is an ingredients to recipes example.
I'm doing this like:
views.py
def add(request):
IngredientFormSet = inlineformset_factory(Recipe, Ingredient,
fk_name="recipe",
formfield_callback=curry(ingredient_form_callback, None))
if request.method == 'POST':
form = RecipeForm(request.POST)
formset = IngredientFormSet(request.POST)
if form.is_valid() and formset.is_valid():
recipe = form.save()
formset = IngredientFormSet(request.POST, instance=recipe)
formset.save()
return redirect("/edit/%s" % recipe.id)
else:
form = RecipeForm()
formset = IngredientFormSet()
return render_to_response("recipes_add.html", {"form":form, "formsets":formset}, context_instance=RequestContext(request))
recipes_add.html
<form method="post">
{% csrf_token %}
<table>
{{ form }}
</table>
<hr>
<h3>Ingredients</h3>
<div class="inline-group">
<div class="tabular inline-related last-related">
{{ formsets.management_form }}
{% for formset in formsets.forms %}
<table>
{{ formset }}
</table>
{% endfor %}
</div>
</div>
<p class="success tools">Add another row</p>
<input type="submit" value="Add">
</form>
How can I get the inlines to work within my formwizard multistep form?
The models.py now looks like this because I want books to be inlines to contact. I want the inlines to be on the first step of my formwizard. Then go through to step 2 and finish.
from django.db import models
# Create your models here.
class Contact(models.Model):
subject = models.CharField(max_length=50)
sender = models.EmailField()
def __unicode__(self):
return self.subject
class Contact2(models.Model):
message = models.TextField(max_length=500)
def __unicode__(self):
return self.message
class Book(models.Model):
author = models.ForeignKey(Contact)
title = models.CharField(max_length=100)

Answer 1

The formwizard included in Django (below version 1.4) doesn't support formsets. Beginning with version 1.4, there will be a much better implementation (see https://docs.djangoproject.com/en/dev/ref/contrib/formtools/form-wizard/)
Back to your question, if you can't wait for the next Django release - which I assume - you could stick to django-formwizard. The last release (1.0) is api compatible to the upcoming Django formwizard.
With the new formwizard implementation you can use FormSets the same way you use normal Forms.