Merge pull request #2516 from FinnStutzenstein/Issue2502

Remove chat history

CHANGELOG

@@ -22,6 +22,7 @@ Core:
 - Moved custom slides to own app "topics". Renamed it to "Topic".
 - Added support for multiple projectors.
 - Added an overlay for the current list of speakers.
+- Added button to clear the chatbox.
 
 Motions:
 - Added origin field.

openslides/core/migrations/0007_manage_chat_permission.py

@@ -0,0 +1,19 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.10.1 on 2016-10-17 09:50
+from __future__ import unicode_literals
+
+from django.db import migrations
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('core', '0006_multiprojector'),
+    ]
+
+    operations = [
+        migrations.AlterModelOptions(
+            name='chatmessage',
+            options={'default_permissions': (), 'permissions': (('can_use_chat', 'Can use the chat'), ('can_manage_chat', 'Can manage the chat'))},
+        ),
+    ]

openslides/core/models.py

@@ -287,7 +287,8 @@ class ChatMessage(RESTModelMixin, models.Model):
     class Meta:
         default_permissions = ()
         permissions = (
-            ('can_use_chat', 'Can use the chat'),)
+            ('can_use_chat', 'Can use the chat'),
+            ('can_manage_chat', 'Can manage the chat'),)
 
     def __str__(self):
         return 'Message {}'.format(self.timestamp)

openslides/core/static/css/app.css

@@ -1405,7 +1405,7 @@ img {
     border-color: #dddddd;
     border-width: 1px;
     box-shadow: -5px 5px 5px rgba(0, 0, 0, 0.2);
-    height: 200px;
+    height: 234px;
     padding: 0 10px 10px 10px;
     z-index: 5;
 }

openslides/core/static/js/core/site.js

@@ -1338,6 +1338,10 @@ angular.module('OpenSlidesApp.core.site', [
                 }
             }
         });
+
+        $scope.clearChatHistory = function () {
+            $http.post('/rest/core/chatmessage/clear/');
+        };
     }
 ])
 

openslides/core/static/templates/index.html

@@ -63,6 +63,12 @@
                       <button type="submit" class="btn btn-default" id="messageSendButton">
                         <i class="fa fa-comment"></i>
                       </button>
+                      <button os-perms="core.can_manage_chat" type="button"
+                        class="btn btn-default btn-danger" id="clearchatHistory"
+                        ng-bootbox-confirm="{{ 'Are you sure to delete the chat history?' | translate }}"
+                        ng-bootbox-confirm-action="clearChatHistory()">
+                        <i class="fa fa-trash"></i>
+                      </button>
                     </span>
                   </div>
                 </form>

openslides/core/views.py

@@ -15,25 +15,27 @@ from django.core.urlresolvers import get_resolver
 from django.db.models import F
 from django.http import Http404, HttpResponse
 from django.utils.timezone import now
+from django.utils.translation import ugettext as _
 
-from openslides import __version__ as version
+from .. import __version__ as version
-from openslides.utils import views as utils_views
+from ..utils import views as utils_views
-from openslides.utils.collection import Collection, CollectionElement
+from ..utils.autoupdate import inform_deleted_data
-from openslides.utils.plugins import (
+from ..utils.collection import Collection, CollectionElement
+from ..utils.plugins import (
     get_plugin_description,
     get_plugin_verbose_name,
     get_plugin_version,
 )
-from openslides.utils.rest_api import (
+from ..utils.rest_api import (
     ModelViewSet,
     Response,
     SimpleMetadata,
     ValidationError,
     ViewSet,
     detail_route,
+    list_route,
 )
-from openslides.utils.search import search
+from ..utils.search import search
-
 from .access_permissions import (
     ChatMessageAccessPermissions,
     ConfigAccessPermissions,
@@ -667,13 +669,18 @@ class ChatMessageViewSet(ModelViewSet):
         """
         if self.action in ('list', 'retrieve'):
             result = self.get_access_permissions().check_permissions(self.request.user)
-        else:
+        elif self.action in ('metadata', 'create'):
             # We do not want anonymous users to use the chat even the anonymous
             # group has the permission core.can_use_chat.
             result = (
-                self.action in ('metadata', 'create') and
                 self.request.user.is_authenticated() and
                 self.request.user.has_perm('core.can_use_chat'))
+        elif self.action == 'clear':
+            result = (
+                self.request.user.has_perm('core.can_use_chat') and
+                self.request.user.has_perm('core.can_manage_chat'))
+        else:
+            result = False
         return result
 
     def perform_create(self, serializer):
@@ -683,6 +690,22 @@ class ChatMessageViewSet(ModelViewSet):
         """
         serializer.save(user=self.request.user)
 
+    @list_route(methods=['post'])
+    def clear(self, request):
+        """
+        Deletes all chat messages.
+        """
+        # Collect all chat messages with their collection_string and id
+        chatmessages = ChatMessage.objects.all()
+        args = []
+        for chatmessage in chatmessages:
+            args.append(chatmessage.get_collection_string())
+            args.append(chatmessage.pk)
+        chatmessages.delete()
+        # Trigger autoupdate and setup response.
+        inform_deleted_data(*args)
+        return Response({'detail': _('All chat messages deleted successfully.')})
+
 
 # Special API views
 

openslides/users/signals.py

@@ -27,6 +27,7 @@ def create_builtin_groups_and_admin(**kwargs):
         'core.can_manage_config',
         'core.can_manage_projector',
         'core.can_manage_tags',
+        'core.can_manage_chat',
         'core.can_see_frontpage',
         'core.can_see_projector',
         'core.can_use_chat',
@@ -102,6 +103,7 @@ def create_builtin_groups_and_admin(**kwargs):
         permission_dict['core.can_manage_projector'],
         permission_dict['core.can_manage_tags'],
         permission_dict['core.can_use_chat'],
+        permission_dict['core.can_manage_chat'],
         permission_dict['mediafiles.can_see'],
         permission_dict['mediafiles.can_manage'],
         permission_dict['mediafiles.can_upload'],

tests/integration/core/test_viewset.py

@@ -1,4 +1,5 @@
 from django.core.urlresolvers import reverse
+from rest_framework import status
 from rest_framework.test import APIClient
 
 from openslides.core.config import config
@@ -145,3 +146,18 @@ class TestConfigDBQueries(TestCase):
         """
         with self.assertNumQueries(61):
             self.client.get(reverse('config-list'))
+
+
+class ChatMessageViewSet(TestCase):
+    """
+    Tests requests to deal with chat messages.
+    """
+    def setUp(self):
+        admin = User.objects.get(pk=1)
+        self.client.force_login(admin)
+        ChatMessage.objects.create(message='test_message_peechiel8IeZoohaem9e', user=admin)
+
+    def test_clear_chat(self):
+        response = self.client.post(reverse('chatmessage-clear'))
+        self.assertEqual(response.status_code, status.HTTP_200_OK)
+        self.assertEqual(ChatMessage.objects.all().count(), 0)