Django inline forms with multiple foreign keys - django

Question

I'm trying to use Django's ModelForm and inline forms in my templates. However, I cannot find any documentation that maps neatly to a database model with multiple foreign keys back to the same table. These are my models:
# models.py
class Universities(models.Model):
name = models.CharField(max_length=100)
class Majors(models.Model):
name = models.CharField(max_length=80)
class Resumes(models.Model):
name = models.CharField(max_length=70)
undergrad = models.ForeignKey(Universities, related_name='undergrad_university')
undergrad_major = models.ForeignKey(Majors, related_name='undergrad_major')
grad = models.ForeignKey(Universities, related_name='grad_university')
grad_major = models.ForeignKey(Majors, related_name='grad_major')
How can I have Django generate a form for submitting Resumes where users can type in their university name and major? All four of which would be used to create new entries in their respective databases (2 in Universities, 2 in Majors) before saving the new resume similar to how the inline formset example works for a singular foreign key.

Answer 1

EDIT2 : For making a form. I guess I'd have done a personalized form with overriding of save() method, something like this (forms.py):
class YourForm(forms.Form):
fname = forms.CharField(label="name",max_length=70,validators=[#Choose your validators here])
fundergrad = forms.CharField(label="fundergrad",max_length=100,validators=[#Choose your validators here])
fundergrad_major = forms.CharField(label="fundergrad_major",max_length=80,validators=[#Choose your validators here])
fgrad = forms.CharField(label="fgrad",max_length=100,validators=[#Choose your validators here])
fgrad_major = forms.CharField(label="fgrad_major",max_length=80,validators=[#Choose your validators here])
def save(self, datas):
res = Resumes()
res.name = datas['fname']
undergrad = Universities()
undergrad_major = Majors()
grad = Universities()
grad_major = Majors()
undergrad.name = datas['fundergrad']
undegrad_major.name = datas['fundergrad_major']
grad.name = datas['fgrad']
grad_major.name = datas['fgrad_major']
undergrad.save()
undergrad_major.save()
grad.save()
grad_major.save()
res.undergrad = undergrad
res.undergrad_major = undergrad_major
res.grad = grad
res.grad_major = grad_major
res.save()
return res
In views.py :
def formView(request) :
if request.method == 'POST':
form = YourForm(request.POST)
if form.is_valid():
datas={}
datas['fundergrad']=form.cleaned_data['fundergrad']
datas['fundergrad_major']=form.cleaned_data['fundergrad_major']
datas['fgrad']=form.cleaned_data['fgrad']
datas['fgrad_major']=form.cleaned_data['fgrad_major']
form.save(datas)
#Then do what you have to do in your view
EDIT1 : (doesn't answer the question, but it could help someone maybe so I let it here)
I would have tried with something like this in admin.py:
class UniversitiesInline1(admin.StackedInline):
model = Universities
fk_name = "undergrad"
class UniversitiesInline2(admin.StackedInline):
model = Universities
fk_name = "grad"
class MajorsInline1(admin.StackedInline):
model = Majors
fk_name = "undergrad_major"
class MajorsInline2(admin.StackedInline):
model = Majors
fk_name = "grad_major"
class ResumesAdmin(admin.ModelAdmin)
inlines = [
UniversitiesInline1,
UniversitiesInline2,
MajorsInline1,
MajorsInline2,
]
admin.site.register(Resumes, ResumesAdmin)
Explanations : https://docs.djangoproject.com/en/dev/ref/contrib/admin/#working-with-a-model-with-two-or-more-foreign-keys-to-the-same-parent-model