Hello Everyone,
I want to inline formset for m2m relationship. Related code looks as
follows:
models.py
```
class Outcome(models.Model):
# some fields
# Foreign key is created to make outcomes inline in course form
course_outcome = models.ForeignKey("course.Course",
on_delete=models.SET_NULL, blank=True, null=True)
class Course(models.Model):
# some fields
course_outcome = models.ManyToManyField(Outcome,
verbose_name=COURSE_SINGULAR + " outcome", blank=True)
```
forms.py
```
class OutcomeForm(forms.ModelForm):
# some fields
class CourseForm(forms.ModelForm):
# some fields including inline outcomes
OutcomeFormSet =
inlineformset_factory(parent_model=Course, model=Outcome, form=OutcomeForm,
extra=1, can_delete=True)
```
views.py
```
class CourseCreateForm(CreateView):
model = Course
template_name = "course/course_form.html"
form_class = CourseForm
success_url = reverse_lazy("course")
def get_context_data(self, **kwargs):
context = super(CourseCreateForm, self).get_context_data(**kwargs)
if self.request.POST:
context["outcomes"] = OutcomeFormSet(self.request.POST)
else:
context["outcomes"] = OutcomeFormSet()
return context
def form_valid(self, form, **kwargs):
super(CourseCreateForm, self).get_context_data(**kwargs)
context = self.get_context_data()
outcomes = context["outcomes"]
with transaction.atomic():
if outcomes.is_valid():
self.object = form.save()
outcomes.instance = self.object
outcomes.save()
form.instance.course_outcome.set(Outcome.objects.filter(course_outcome=self.object))
form.save()
return super().form_valid(form)
```
All my data in Outcome and Course models saved successfully except m2m
field of course model.
Can anyone please guide me what I am doing wrong here.
Thanks in advance,
--
Suraj
https://hacksj4u.wordpress.com
https://github.com/SurajDadral
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