Hello,
here is my model
class Mark(meta.Model):
recipe = meta.ForeignKey(Recipe)
user = meta.ForeignKey(User, unique=True)
mark = meta.SmallIntegerField()
def __repr__(self):
return "%s" % (self.get_recipe(), self.get_user(), mark)
i want a user to be alble to mark a recipe only once, or if not once,
update the previous entry he had for this recipe.
I ll have to get the average mark by selecting all rows where recipe id
= x , adding mark and divising by count.
how would you do that ?
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