I need to initialize a selection in a M2M field of the Document
ModelForm during the first GET of a form that creates a new Document -
classes and view as follows:
class DocumentForm(forms.ModelForm):
class Meta:
model = Document
class Document(models.Model):
.......
categories = models.ManyToManyField(Category)
view function:
def create(request, category_name, template='edit2.html', params={}):
category = get_object_or_404(Category, name=category_name)
new_doc = Document(author=request.user, pub_date=datetime.now())
if request.method == 'POST':
form = DocumentForm(request.POST, instance=new_doc)
if form.is_valid():
.....
else:
form = DocumentForm(instance=new_doc) # todo: figure out how
to initialize categories
params['form'] = form
return render_to_response(template, params,
RequestContext(request))
I've tried a few approaches without success.
TIA
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