--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/soc/modules/ghop/views/models/task_subscription.py	Tue Sep 08 21:08:14 2009 +0200
@@ -0,0 +1,141 @@
+#!/usr/bin/python2.5
+#
+# Copyright 2009 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.
+
+"""Views for GHOP Task Subscription.
+"""
+
+__authors__ = [
+    '"Madhusudan.C.S" <madhusudancs@gmail.com>'
+  ]
+
+
+from google.appengine.ext import db
+
+from django import http
+
+from soc.logic import dicts
+from soc.logic.models import user as user_logic
+from soc.views.helper import decorators
+from soc.views.models import base
+
+from soc.modules.ghop.logic.models import task as ghop_task_logic
+from soc.modules.ghop.logic.models import task_subscription as \
+    ghop_task_subscription_logic
+from soc.modules.ghop.views.helper import access as ghop_access
+
+import soc.modules.ghop.logic.models.task_subscription
+
+
+class View(base.View):
+  """View methods for the Task Subscriptions.
+  """
+
+  def __init__(self, params=None):
+    """Defines the fields and methods required for the task_subscription.
+
+    Params:
+      params: a dict with params for this View
+    """
+
+    rights = ghop_access.GHOPChecker(params)
+    rights['subscribe'] = ['checkIsUser']
+
+    new_params = {}
+    new_params['logic'] = soc.modules.ghop.logic.models.task_subscription.logic
+    new_params['rights'] = rights
+
+    new_params['name'] = "Task Subscription"
+    new_params['module_name'] = "task_subscription"
+
+    new_params['module_package'] = 'soc.modules.ghop.views.models'
+    new_params['url_name'] = 'ghop/task_subscription'
+
+    patterns = []
+    patterns += [
+        (r'^%(url_name)s/(?P<access_type>subscribe)$',
+        '%(module_package)s.%(module_name)s.subscribe',
+        'Subscribe to the %(name)s'),
+        ]
+
+    new_params['extra_django_patterns'] = patterns
+
+    params = dicts.merge(params, new_params, sub_merge=True)
+
+    super(View, self).__init__(params=params)
+
+  @decorators.merge_params
+  @decorators.check_access
+  def subscribe(self, request, access_type, page_name=None,
+                params=None, **kwargs):
+    """View that subscribes/unsubscribes an user.
+
+    This view is accessed by an AJAX call from task public page.
+
+    Args:
+      request: the standard Django HTTP request object
+    """
+
+    get_params = request.GET
+
+    task_entity = ghop_task_logic.logic.getFromKeyNameOr404(
+        get_params['key_name'])
+
+    user_account = user_logic.logic.getForCurrentAccount()
+
+    fields = {
+        'task': task_entity,
+        }
+
+    entity = ghop_task_subscription_logic.logic.getForFields(
+        fields, unique=True)
+
+    subscribers = db.get(entity.subscribers)
+
+    # TODO: this should not loop over all subscribers but use GET argument
+    remove = False
+
+    if entity:
+      for subscriber in subscribers:
+        if subscriber.key() == user_account.key():
+          remove = True
+          break 
+
+    if remove:
+      subscribers.remove(subscriber)
+      data = 'remove'
+    else:
+      subscribers.append(user_account)
+      data = 'add'
+
+    # TODO: missing description for this argument, is it even necessary?
+    if not get_params.get('no_toggle'):
+      sub_keys = []
+      for subscriber in subscribers:
+        sub_keys.append(subscriber.key())
+
+      properties = {
+          'subscribers': sub_keys,
+          }
+
+      ghop_task_subscription_logic.logic.updateEntityProperties(
+          entity, properties)
+
+    return http.HttpResponse(data)
+
+
+view = View()
+
+subscribe = decorators.view(view.subscribe)