Ticket #18062: ref_models_fields_choices.diff

docs/ref/models/fields.txt

@@ -118 +118 @@
     class Foo(models.Model):
         gender = models.CharField(max_length=1, choices=GENDER_CHOICES)
 
+To avoid typos the keys of the choices can be attributes of the class::
+
+    class User(models.Model):
+        GENDER_MALE = 0
+        GENDER_FEMALE = 1
+        GENDER_CHOICES = [(GENDER_MALE, 'Male'), (GENDER_FEMALE, 'Female')]
+        gender = models.IntegerField(choices=GENDER_CHOICES)
+    
+        def greet(self):
+            return {self.GENDER_MALE: 'Hi, boy', self.GENDER_FEMALE: 'Hi, girl.'}[self.gender]
+
 You can also collect your available choices into named groups that can
 be used for organizational purposes::