filter by 1 category works

filtering in different ways is currently working for one category at a time.

mysite/themeApp/models.py

@@ -23,6 +23,7 @@ class Product(models.Model):
 	rent_price = models.DecimalField(max_digits=5, decimal_places=2, null=True)
 	name = models.CharField(max_length=200)
 	size = models.CharField(max_length=50)
+	categories = models.ManyToManyField(Category, related_name='products')
 
 
 	def __str__(self):