Saving a Django form with a Many2Many field with through table
- by PhilGo20
So I have this model with multiple Many2Many relationship. 2 of those (EventCategorizing and EventLocation are through tables/intermediary models)
class Event(models.Model):
""" Event information for Way-finding and Navigator application"""
categories = models.ManyToManyField('EventCategorizing', null=True, blank=True, help_text="categories associated with the location") #categories associated with the location
images = models.ManyToManyField(KMSImageP, null=True, blank=True) #images related to the event
creator = models.ForeignKey(User, verbose_name=_('creator'), related_name="%(class)s_created")
locations = models.ManyToManyField('EventLocation', null=True, blank=True)
In my view, I first need to save the creator as the request user, so I use the commit=False parameter to get the form values.
if event_form.is_valid():
event = event_form.save(commit=False)
#we save the request user as the creator
event.creator = request.user
event.save()
event = event_form.save_m2m()
event.save()
I get the following error:
*** TypeError: 'EventCategorizing' instance expected
I can manually add the M2M relationship to my "event" instance, but I am sure there is a simpler way. Am I missing on something ?
