It is possible to validate payment status

apps/registration/forms.py

@@ -8,7 +8,7 @@ from django.core.exceptions import ValidationError
 from django.forms import FileInput
 from django.utils.translation import gettext_lazy as _
 
-from .models import AdminRegistration, CoachRegistration, StudentRegistration, VolunteerRegistration
+from .models import AdminRegistration, CoachRegistration, Payment, StudentRegistration, VolunteerRegistration
 
 
 class SignupForm(UserCreationForm):
@@ -197,3 +197,34 @@ class AdminRegistrationForm(forms.ModelForm):
     class Meta:
         model = AdminRegistration
         fields = ('role', 'give_contact_to_animath', 'email_confirmed',)
+
+
+class PaymentForm(forms.ModelForm):
+    """
+    Indicate payment information
+    """
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.fields["valid"].widget.choices[0] = ('unknown', _("Pending"))
+
+    def clean_scholarship_file(self):
+        if "scholarship_file" in self.files:
+            file = self.files["scholarship_file"]
+            if file.size > 2e6:
+                raise ValidationError(_("The uploaded file size must be under 2 Mo."))
+            if file.content_type not in ["application/pdf", "image/png", "image/jpeg"]:
+                raise ValidationError(_("The uploaded file must be a PDF, PNG of JPEG file."))
+            return self.cleaned_data["scholarship_file"]
+
+    def clean(self):
+        cleaned_data = super().clean()
+
+        if "type" in cleaned_data and cleaned_data["type"] == "scholarship" \
+                and "scholarship" not in cleaned_data and not self.instance.scholarship_file:
+            self.add_error("scholarship_file", _("You must upload your scholarship attestation."))
+
+        return cleaned_data
+
+    class Meta:
+        model = Payment
+        fields = ('type', 'scholarship_file', 'additional_information', 'valid',)