["python","django","django-models","django-forms"]
Django set default form values

I have a Model as follows: class TankJournal(models.Model): user = models.ForeignKey(User) tank = models.ForeignKey(TankProfile) ts = models.IntegerField(max_length=15) title = models.CharField(max_length=50) body = models.TextField() I also have a model form for the above model as follows: class JournalForm(ModelForm): tank = forms.IntegerField(widget=forms.HiddenInput()) class Meta: model = TankJournal exclude = ('user','ts') I want to know how to set the default value for that tank hidden field. Here is my function to show/save the form so far: def addJournal(request, id=0): if not request.user.is_authenticated(): return HttpResponseRedirect('/') # checking if they own the tank from django.contrib.auth.models import User user = User.objects.get(pk=request.session['id']) if request.method == 'POST': form = JournalForm(request.POST) if form.is_valid(): obj = form.save(commit=False) # setting the user and ts from time import time obj.ts = int(time()) obj.user = user obj.tank = TankProfile.objects.get(pk=form.cleaned_data['tank_id']) # saving the test obj.save() else: form = JournalForm() try: tank = TankProfile.objects.get(user=user, id=id) except TankProfile.DoesNotExist: return HttpResponseRedirect('/error/')
You can use Form.initial. You have two options either populate the value when calling form constructor: form = JournalForm(initial={'tank': 123}) or set the value in the form definition: tank = forms.IntegerField(widget=forms.HiddenInput(), initial=123)