Fixed #92 -- meta.Admin 'fields' parameter is now optional. If it's not given, Django will use all editable fields by default. This cuts down on redundancy. Also updated relevant docs to reflect the change.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@265 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/meta.py

@@ -2136,7 +2136,7 @@ class OneToOne(ManyToOne):
         self.raw_id_admin = raw_id_admin
 
 class Admin:
-    def __init__(self, fields, js=None, list_display=None, list_filter=None, date_hierarchy=None,
+    def __init__(self, fields=None, js=None, list_display=None, list_filter=None, date_hierarchy=None,
         save_as=False, ordering=None, search_fields=None, save_on_top=False):
         self.fields = fields
         self.js = js or []
@@ -2148,10 +2148,17 @@ class Admin:
         self.save_on_top = save_on_top
 
     def get_field_objs(self, opts):
-        # Returns self.fields, except with fields as Field objects instead of
-        # field names.
+        """
+        Returns self.fields, except with fields as Field objects instead of
+        field names. If self.fields is None, defaults to putting every
+        non-AutoField field with editable=True in a single fieldset.
+        """
+        if self.fields is None:
+            field_struct = ((None, {'fields': [f.name for f in opts.fields + opts.many_to_many if f.editable and not isinstance(f, AutoField)]}),)
+        else:
+            field_struct = self.fields
         new_fieldset_list = []
-        for fieldset in self.fields:
+        for fieldset in field_struct:
             new_fieldset = [fieldset[0], {}]
             new_fieldset[1].update(fieldset[1])
             admin_fields = []