Make users and groups searchable via the API.

Signed-off-by: Roberto Rosario <roberto.rosario.gonzalez@gmail.com>

HISTORY.rst

@@ -2,7 +2,8 @@
 ==================
 - Fix HTML mark up in window title. GitLab #397.
 - Add support for emailing documents to a recipient list. GitLab #396.
-- Backport metadata widget changes from @Macrobb. GitLab #378.
+- Backport metadata widget changes from @Macrobb. GitLab #377.
+- Make users and group searchable.
 
 2.5.2 (2017-07-08)
 ==================

mayan/apps/user_management/apps.py

@@ -19,6 +19,7 @@ from .links import (
     link_user_multiple_delete, link_user_multiple_set_password,
     link_user_set_password, link_user_setup
 )
+from .search import *  # NOQA
 
 
 def get_groups():

mayan/apps/user_management/search.py

@@ -0,0 +1,43 @@
+from __future__ import absolute_import, unicode_literals
+
+from django.conf import settings
+from django.utils.translation import ugettext_lazy as _
+
+from dynamic_search.classes import SearchModel
+
+from .permissions import permission_group_view, permission_user_view
+
+print settings.AUTH_USER_MODEL
+user_app, user_model = settings.AUTH_USER_MODEL.split('.')
+
+user_search = SearchModel(
+    app_label=user_app, model_name=user_model,
+    permission=permission_user_view,
+    serializer_string='user_management.serializers.UserSerializer'
+)
+
+user_search.add_model_field(
+    field='first_name', label=_('First name')
+)
+user_search.add_model_field(
+    field='email', label=_('Email')
+)
+user_search.add_model_field(
+    field='groups__name', label=_('Groups')
+)
+user_search.add_model_field(
+    field='last_name', label=_('Last name')
+)
+user_search.add_model_field(
+    field='username', label=_('username')
+)
+
+group_search = SearchModel(
+    app_label='auth', model_name='Group',
+    permission=permission_group_view,
+    serializer_string='user_management.serializers.GroupSerializer'
+)
+
+group_search.add_model_field(
+    field='name', label=_('Name')
+)