Inline django form with custom forms

Question

Hi I have a domain model used in a Django application that I would like to present in one form. I created my application with custom ModelForms (not many changes, some fields excluded, etc.). Model dependencies are as follows:

Complaint
   \
    .--- CarInfo
    .--- Customer

My view function looks like this:

def make(request):
  if request.method == 'POST':
    parameters = copy.copy(request.POST)
    complaint = Complaint()
    carInfo = CarInfo()
    customer = Customer()

    customer_form = CustomerForm(parameters, instance=customer)
    carInfo_form = CarInfoForm(parameters, instance=carInfo)
    parameters['complaint_date'] = get_current_date()
    parameters['customer'] = 1 # dummy value to allow validation success
    parameters['car_info'] = 1 # dummy value to allow validation success
    form = ComplaintForm(parameters, instance=complaint)
    if form.is_valid() and customer_form.is_valid() and carInfo_form.is_valid():
      carInfo_form.save()
      customer_form.save()
      parameters['customer'] = customer.id
      parameters['car_info'] = carInfo.id
      form = ComplaintForm(parameters, instance=complaint)
      form.save()
      return index(request)
  else:
    form = ComplaintForm()
    carInfo_form = CarInfoForm()
    customer_form = CustomerForm()
  return render_to_response('complaints/make_complaint.html', {'complaint_form' : form, 'customer_form' : customer_form, 'carInfo' : carInfo_form})

I do not like this approach too much, moreover, it does not work in all environments - I did not find the reasons why it does not work. I searched this code a bit and found something like an inline set of forms (http://docs.djangoproject.com/en/dev/topics/forms/modelforms/#inline-formsets). This solution looks fine, but since my forms are configured individually, I can use it.

, - , . .

EDITED , . , is_valid(), FALSE, , , . django 1.2.5 - , , ( django 1.2.5) .

Answer 1

model_date -

complaint_date = models.DateField(default=datetime.date.today())

parameters['complaint_date'] = get_current_date()

, .

fk , . .is_valid() 2 , , (commit = False), , .

.

def make(request):
    if request.method == 'POST':
        customer_form = CustomerForm(request.POST)
        carInfo_form = CarInfoForm(request.POST)
        form = ComplaintForm(request.POST)

        if form.is_valid() and customer_form.is_valid() and carInfo_form.is_valid():
            car_instance = carInfo_form.save()
            customer_instance = customer_form.save()

            complaint_instance = form.save(commit=False)
            complaint_instance.car_info = car_instance
            complaint_instance.customer_info = customer_instance          
            complaint_instance.save()

            return index(request)
    else:
        form = ComplaintForm()
        carInfo_form = CarInfoForm()
        customer_form = CustomerForm()

    context = { 'complaint_form' : form,
                'customer_form' : customer_form, 
                'carInfo' : carInfo_form,
              }
    return render_to_response('complaints/make_complaint.html', context, context_instance=RequestContext(request))

:

:

class CarInfo(models.Model):
    some_car_info = models.CharField()

class Customer(models.Model):
    some_customer_info = models.CharField()

class Complaint(models.Model):
    car_info = models.ForeignKey(CarInfo)
    customer_info = models.ForeignKey(Customer)
    some_complaint_info = models.CharField()

forms.py :

class CarInfoForm(forms.ModelForm):
    class Meta:
        model = CarInfo

class CustomerForm(forms.ModelForm):
    class Meta:
        model = Customer

class ComplaintForm(forms.ModelForm):
    class Meta:
        model = Complaint
        exclude = ('car_info', 'customer_info',) # or include = ('some_complaint_info',)

, : form in view docs

• request.method, 3 unbound .

  else:
      form = ComplaintForm()
      carInfo_form = CarInfoForm()
      customer_form = CustomerForm()
  

• .

• request.method == "POST", true, 3 , . POST.

  if request.method == 'POST':
      customer_form = CustomerForm(request.POST)
      carInfo_form = CarInfoForm(request.POST)
      form = ComplaintForm(request.POST)
  

• .is_valid() . , "customer_info" "car_info" , , char .

• , , , , , fk:

      if form.is_valid() and customer_form.is_valid() and carInfo_form.is_valid():
          car_instance = carInfo_form.save()
          customer_instance = customer_form.save()
  

• .save(), . car_instance customer_instance. CarInfo Customer, , .save() .

• , commit=False .save(), ( request.POST) .

          complaint_instance = form.save(commit=False)
          complaint_instance.car_info = car_instance
          complaint_instance.customer_info = customer_instance          
          complaint_instance.save()
  

• , Complaint :

  complaint_info = form.cleaned_data.get('some_complaint_info')
  complaint_instance = Complaint(car_info=car_instance, customer_info=customer_instance, some_complaint_info=some_complaint_info)
  complaint_instance.save()
  

• render

Answer 2

, , , :

• http://www.slideshare.net/kingkilr/forms-getting-your-moneys-worth
• Django multiple form factory

. , - ( modifiying request.POST, :), @kriegar , . ; Django Forms . , , formets .

Answer 3

, formet factory ... , . ...

...

:

:

class CarInfoFrm(forms.ModelForm):
    class Meta:
        model = CarInfo
        fields = (....)
carInfoForm = inlineformset_factory(Complaint, CarInfo, form=carInfoFrm,)
CustomerForm = inlineformset_factory(Complaint, Customer, form=carInfoFrm,)

:

complaint = Complaint()
carInfo = CarInfo()
customer = Customer()

cus_form = CustomerForm(parameters, instance=complaint)
car_form = CarInfoForm(parameters, instance=complaint)
comp_form = ComplaintForm(parameters, instance=complaint)

if cus_form.is_valid() and ...... :
    comp = comp_form.save(commit=False)#do not save it yet
    comp.<attr> = "some_value" #you can edit your data before save...
    comp.save()
    car = car_form(commit=False)
    # do as complaint form... edit and save... 

EDIT: inlineforms. ...

, , , :

if comp_form.is_valid():
    comp = comp_form.save(commit=False)
    comp.<attr> = "some_value"
    comp.save()
if car_form.is_valid():
    # edit if neccessary then save...

if cust_form.is_Valid():
    # edit if neccessary then save...

, ,

carInfoForm = inlineformset_factory(Complaint, CarInfo, form=carInfoFrm,)

, Compalaint,

car_form = CarInfoForm(parameters, instance=complaint)

, car_form carInfo, ( , ). , . , , .

moehods , . , , django.