Added image validation

Breadcrumbs/forms.py

 from django import forms
+from django.core.validators import FileExtensionValidator 
 
 class LoginForm(forms.Form):
 	user = forms.CharField(label = 'username', max_length = 100)
@@ -9,4 +10,4 @@ class ProductTypeForm(forms.Form):
 	Product_Category = forms.CharField(max_length = 255)
 	Product_Description = forms.CharField(max_length = 255, required = False)
 	To_Buy = forms.BooleanField(initial = False, required = False)
-	Icon = forms.ImageField()
+	Icon = forms.ImageField(validators=[FileExtensionValidator( ['png','jpg'] ) ])
\ No newline at end of file

Breadcrumbs/views.py

@@ -3,6 +3,7 @@ from django.db.models import Q
 from .forms import LoginForm, ProductTypeForm
 from django.http import HttpResponseRedirect
 from django.shortcuts import render, get_object_or_404
+from django.forms import ValidationError
 from django.views.generic.edit import DeleteView 
 
 from .models import User, Product_Type, Item, Recipe
@@ -58,9 +59,17 @@ def add_product_type(request):
 			product_description = form.cleaned_data.get("Product_Description")
 			to_buy = form.cleaned_data.get("To_Buy")
 			icon = form.cleaned_data.get("Icon")
+			if icon:
+				if icon.size > 4*1024*1024: #( > 4mb )
+					raise ValidationError("Image file too large")
+					return icon
+			else:
+				raise ValidationError("Couldn't read uploaded image")
+
 			#item = Product_Type.objects.create(Product_Name = product_name, Product_Category = product_category, Product_Description = product_description, To_Buy = to_buy, User_id = self.request.user.User_ID, Icon = icon)
 			instance = Product_Type.objects.create(Product_Name = product_name, Product_Category = product_category, Product_Description = product_description, To_Buy = to_buy, User_ID = request.user, Icon = icon)
 			instance.save()
+			return HttpResponseRedirect('/fridge/list/')
 	else:
 		form = ProductTypeForm()
 	context['form'] = form