--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/soc/models/group.py	Fri Sep 19 18:02:37 2008 +0000
@@ -0,0 +1,81 @@
+#!/usr/bin/python2.5
+#
+# Copyright 2008 the Melange authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""This module contains the Group Model."""
+
+__authors__ = [
+  '"Todd Larsen" <tlarsen@google.com>',
+]
+
+from google.appengine.ext import db
+
+from django.utils.translation import ugettext_lazy
+
+from soc.models import base
+import soc.models.user
+
+
+class Group(base.ModelWithFieldAttributes):
+  """Common data fields for all groups.
+
+  A Group entity participates in the following relationships implemented as
+  a db.ReferenceProperty elsewhere in another db.Model:
+
+   school), club), sponsor), org)
+     a 1:1 relationship with each entity containing a more specific type of
+     Group.  These relationships are represented explicitly in the other
+     "group" models by a db.ReferenceProperty named 'group'.  The
+     collection_name argument to db.ReferenceProperty should be set to the
+     singular of the entity model name of the other "group" class.  The
+     above relationship names correspond, respectively to these Models:
+       School, Club, Sponsor, Organization
+     The relationships listed here are mutually exclusive.  For example,
+     a Group cannot be both a School and a Club at the same time.
+  """
+
+  #: Required many:1 relationship indicating the founding User of the
+  #: Group (this relationship is needed to keep track of lifetime group
+  #: creation limits, used to prevent spamming, etc.).
+  founder = db.ReferenceProperty(reference_class=soc.models.user.User,
+                                 required=True, collection_name="groups")
+
+  #: Required organization name; can only be lower ASCII, not UTF-8
+  #: text, because it is used, for example, as part of the shipping
+  #: address.
+  name = db.StringProperty(required=True)
+
+  #: Optional field used as a display name, such in Group lists displayed
+  #: in the web application.  Should be the entire display name in the
+  #: format the Group would like it displayed. Display names can be any
+  #: valid UTF-8 text.
+  displayname = db.StringProperty()
+
+  #: Required email address used as the "public" contact mechanism for
+  #: the Group (as opposed to the founder.id email address which is kept
+  #: secret, revealed only to Developers).
+  email = db.EmailProperty(required=True)
+
+  #: Required home page URL.
+  homepage = db.LinkProperty(required=True)
+
+  # TODO(pawel.solyga): merge in the (required) mailing address stuff here...
+
+  # TODO(pawel.solyga): merge in the (optional) shipping address stuff here...
+
+  #: Required contact phone number that will be, amongst other uses,
+  #: supplied to shippers along with the shipping address; kept private.
+  phone = db.PhoneNumberProperty(required=True)
+