Question

I am new to django, and have been tying to pass a User object to a ModelForm and then validate it. That is adding the User object as a ForeignKey to a Note object in the end, where the ModelForm is a Meta of the class Note.

My forms.py:

  class NoteForm(ModelForm):
     class Meta:
        model = Note

My views.py:

  def addNote(request):
     if request.method == 'POST':
        user = User.objects.get(username=request.POST['user'])
        model_form = NoteForm(request.POST, request.FILES, user)
        if model_form.is_valid():
           model_form.save()
           return HttpResponseRedirect(reverse('index'))
        return HttpResponse('De indtastede data er ikke gyldige')
     return render(request, 'studies/uploadfile.html')

My template.html:

<form enctype="multipart/form-data" method="post" action="/notes/add/">
Note Title: <input type="text" name="name"  /> <br />
Select Note: <input type="file" name="note" /> <br /> 
<input type="hidden" name="user" value="{{ user.id }}">
<input type="submit" value="submit" />
{% csrf_token %}
</form>

I have tried using the request.user, since im trying to get the current user logged on and adding that user as the ForreignKey.
Any help will be appreciated, beforehand thanks.

Answer 1

I’m not sure what the point is of wanting to send it to the template. You have it in the view both before and after validation, after all: better to deal with it there.

The thing to do is to exclude the user field from the form definition, then set it manually on save:

class NoteForm(ModelForm):
   class Meta:
      model = Note
      exclude = ('user',)


if request.method == 'POST':
   model_form = NoteForm(request.POST, request.FILES)
   if model_form.is_valid():
       note = model_form.save(commit=True)
       note.user = request.user
       note.save()
       return...

Also note that your view never sends any validation errors to the template, and your template doesn’t show errors or the invalid values that the user has entered. Please follow the structure set out in the documentation.