Fixed #3196 -- Fixed inconsistency in setting choices on ChoiceFields dynamically

git-svn-id: http://code.djangoproject.com/svn/django/trunk@4379 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/newforms/fields.py

@@ -320,10 +320,19 @@ class ChoiceField(Field):
     def __init__(self, choices=(), required=True, widget=Select, label=None, initial=None):
         if isinstance(widget, type):
             widget = widget()
-        widget.choices = choices
         super(ChoiceField, self).__init__(required, widget, label, initial)
         self.choices = choices
 
+    def _get_choices(self):
+        return self._choices
+
+    def _set_choices(self, value):
+        # Setting choices also sets the choices on the widget.
+        self._choices = value
+        self.widget.choices = value
+
+    choices = property(_get_choices, _set_choices)
+
     def clean(self, value):
         """
         Validates that the input is in self.choices.

tests/regressiontests/forms/tests.py

@@ -1866,6 +1866,21 @@ defined on the Field, not the ones defined on the Widget.
 <option value="J">Java</option>
 </select>
 
+You can set a ChoiceField's choices after the fact.
+>>> class FrameworkForm(Form):
+...     name = CharField()
+...     language = ChoiceField()
+>>> f = FrameworkForm(auto_id=False)
+>>> print f['language']
+<select name="language">
+</select>
+>>> f.fields['language'].choices = [('P', 'Python'), ('J', 'Java')]
+>>> print f['language']
+<select name="language">
+<option value="P">Python</option>
+<option value="J">Java</option>
+</select>
+
 Add widget=RadioSelect to use that widget with a ChoiceField.
 >>> class FrameworkForm(Form):
 ...     name = CharField()