lagt til Book.get_authors()

python/web/library/models.py

@@ -61,6 +61,13 @@ class Book(models.Model):
 			id.save()
 #		return Book.get(isbn=self.isbn)
 
+	def get_authors(self):
+		people = self.person.all()
+		authors = []
+		for person in people:
+			if person.relation.name == 'Author':
+				authors.append(person.person)
+		return authors
 
 	def __unicode__(self):
 		return self.title