On 21 mar, 22:38, Bjunix <bju...@bjunix.de> wrote: > You probably want to change the attributes of the model object > directly. > > "If you call save() with commit=False, then it will return an object > that hasn't yet been saved to the database." > Source:http://docs.djangoproject.com/en/dev/topics/forms/modelforms/#the-sav... > > So I would do something like this: > > def my_change_view(request, id): > #get instance based on id here > #.... > if request.method == 'POST': > form = MyModelForm(request.POST, instance=instance) > if form.is_valid(): > obj = form.save(commit=False) > obj.created_by = request.user > obj.save() > form.save_m2m() > return redirect('/somewhere') > else: > form = MyModelForm(instance=instance) > return render_to_response..... > > I hope this helps. Remember to call form.save_m2m() if your model has > any many-to-many relations. I also would suggest to (re-)read django's > excellent documentation forms. >
I see that the problem I have had today is exactly the same. The only problem of the solution you are proposing here is that created_by could not be mandatory. If it is, the form would be not valid. > On Mar 21, 10:00 pm, Cesar Devera <cesardev...@gmail.com> wrote: > > > hi. > > > I have a ModelForm based on an Model like this: > > > class MyModel(models.Model): > > attr1 = models.CharField() > > attr2 = models.CharField() > > attr3 = models.CharField() > > createdby = models.ForeignKey(User, related_name='createdby', > > db_column='createdbyid') > > calculatedfield = models.CharField() > > > class MyModelForm(ModelForm): > > class Meta: > > model = MyModel > > > the attribute fields attr1, attr2 and attr3 are properly shown on my > > html page, and correctly restored on my server-side view like this: > > > def save(request,id): > > user = request.user > > try: > > mymodel = MyModel.objects.get(pk=id) > > except: > > mymodel = MyModel() > > form = MyModelForm(request.POST, instance=mymodel) > > > now comes the problem: I want to set the createdby attribute only on > > my view, AFTER the html page Post. I want to set the createdby and any > > other calculated field on server side. is it possible? > > > I tried: > > > form['createdby'] = request.user > > > but it didn't seem to work. > > > this field (createdby) is NOT NULL and so I wouldn't like to set it to > > NULL, save the form with form.save() and later recover the entity > > again and manipulate the remaining fields... > > > any ideas? > > > thanks in advance. > > -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
