Django form test generates error with foreign key model field

Question

You have a problem testing the submitted form. In a field that is defined using models.ForeignKey , the test generates an error.

The gender_opt field is defined in models.py as

class Patient(models.Model):
    gender_opt = models.ForeignKey(GenderOption, null=False, blank=False)

with ForeignKey specified

class GenderOption(models.Model):
    gender_txt = models.CharField(max_length=50)

In my forms.py I have

class PatientForm(ModelForm):
class Meta:
    model = Patient

fields = [
         other fields
        'gender_opt'
    ]

widgets = {
other widgets

'gender_opt': Select(attrs={'class': 'form-control', 'id': 'gender_id', 'required': "",
                                     'data-error': "Gender must be filled"}),
}

and test.py

from django.test import TestCase
from django.contrib.auth.models import *

class FormValidation(TestCase):
def test_patient_add_ok(self):
    """test save patient data successfuly"""

    data = {u'cpf_id': [u'248.215.628-98'], u'state_txt': [u'RJ'], 
            u'citizenship_txt': [u'BR'], u'name_txt': [u'Test pacient'],
            u'date_birth_txt': [u'15/01/2003'], u'country_txt': [u'BR'],
            u'gender_opt': [u'1']}


    response = self.client.post('/quiz/patient/new/', data)
    errors = response.context['patient_form'].errors

In errors, I received the following message:

Select a valid choice. That choice is not one of the available choices.

URL / quiz / patient / new / 'in test.py points to the view (in views.py)

def patient_create(request, template_name="quiz/register.html"):

   gender_options = GenderOption.objects.all()

   patient_form = PatientForm()

if request.method == "POST":

    patient_form = PatientForm(request.POST)

    if patient_form.is_valid():
        new_patient = patient_form.save(commit=False)
        new_patient.save()



context = {'patient_form': patient_form,
           'gender_options': gender_options,
}

return render(request, template_name, context)

I guess the problem is the models. Field Type Field Type.

Appreciate any help.

Answer 1

GenderOption. , self.client, :

class FormValidation(TestCase):
    def test_patient_add_ok(self):
        """test save patient data successfully"""

        # create GenderOption
        gender_opt = GenderOption.objects.create(gender_txt='M')

        data = {u'cpf_id': [u'248.215.628-98'], u'state_txt': [u'RJ'], 
                u'citizenship_txt': [u'BR'], u'name_txt': [u'Test pacient'],
                u'date_birth_txt': [u'15/01/2003'], u'country_txt': [u'BR'],
                u'gender_opt': [str(gender_opt.id)]}

        form = PatientForm(data=data)
        self.assertTrue(form.is_valid())
        ...