Ticket #18062: ref_models_fields_apr-13-2012.diff

docs/ref/models/fields.txt

@@ -100 +100 @@
 The first element in each tuple is the actual value to be stored. The second
 element is the human-readable name for the option.
 
-The choices list can be defined either as part of your model class::
+The choices list can be defined as part of your model class::
 
     class Foo(models.Model):
+        GENDER_MALE = 'M'
+        GENDER_FEMALE = 'F'
         GENDER_CHOICES = (
-            ('M', 'Male'),
-            ('F', 'Female'),
+            (GENDER_MALE, 'Male'),
+            (GENDER_FEMALE, 'Female'),
         )
         gender = models.CharField(max_length=1, choices=GENDER_CHOICES)
+        
+        def greet(self): 
+                return {self.GENDER_MALE: 'Hi, boy', self.GENDER_FEMALE: 'Hi, girl.'}[self.gender]
 
-or outside your model class altogether::
-
-    GENDER_CHOICES = (
-        ('M', 'Male'),
-        ('F', 'Female'),
-    )
-    class Foo(models.Model):
-        gender = models.CharField(max_length=1, choices=GENDER_CHOICES)
-
 You can also collect your available choices into named groups that can
 be used for organizational purposes::