lostplaces-backend/lostplaces/lostplaces_app/forms.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

''' (web)forms that can be used elsewhere. '''

from django import forms
from django.contrib.auth.forms import UserCreationForm, UserChangeForm
from .models import Explorer, Place, PlaceImage, Voucher

class ExplorerCreationForm(UserCreationForm):
	class Meta:
		model = Explorer
		fields = ('username', 'email')
	voucher = forms.CharField(max_length=10, help_text='The Voucher you got from an administrator')

	def is_valid(self):
		super().is_valid()
		sumitted_voucher = self.cleaned_data.get('voucher')
		try:
			fetched_voucher = Voucher.objects.get(code=sumitted_voucher)
		except Voucher.DoesNotExist:
			self.add_error('voucher', 'Invalid voucher')
			return False

		fetched_voucher.delete()
		return True

class ExplorerChangeForm(UserChangeForm):
	class Meta:
		model = Explorer
		fields = ('username', 'email')

class PlaceForm(forms.ModelForm):
	class Meta:
		model = Place
		fields = '__all__'
		exclude = ['submitted_by']
		
class PlaceImageCreateForm(forms.ModelForm):
	class Meta:
		model = PlaceImage
		fields = ['filename']
		widgets = {
			'filename': forms.ClearableFileInput(attrs={'multiple': True})
		}

	def __init__(self, *args, **kwargs):
		super().__init__(*args, **kwargs)

		self.fields['filename'].required = False