master trunk of gnowsys-studio

1 files changed, 146 insertions, 0 deletions

diff --git a/objectapp/managers.py b/objectapp/managers.py
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+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero General Public License as
+#     published by the Free Software Foundation, either version 3 of the
+#     License, or (at your option) any later version.
+
+#     This program is distributed in the hope that it will be useful,
+#     but WITHOUT ANY WARRANTY; without even the implied warranty of
+#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#     GNU Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+# This project incorporates work covered by the following copyright and permission notice:  
+
+#    Copyright (c) 2009, Julien Fache
+#    All rights reserved.
+
+#    Redistribution and use in source and binary forms, with or without
+#    modification, are permitted provided that the following conditions
+#    are met:
+
+#    * Redistributions of source code must retain the above copyright
+#      notice, this list of conditions and the following disclaimer.
+#    * Redistributions in binary form must reproduce the above copyright
+#      notice, this list of conditions and the following disclaimer in
+#      the documentation and/or other materials provided with the
+#      distribution.
+#    * Neither the name of the author nor the names of other
+#      contributors may be used to endorse or promote products derived
+#      from this software without specific prior written permission.
+
+#    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+#    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+#    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+#    FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+#    COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+#    INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+#    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+#    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+#    STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+#    ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+#    OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# Copyright (c) 2011,  2012 Free Software Foundation
+
+#     This program is free software: you can redistribute it and/or modify
+#     it under the terms of the GNU Affero General Public License as
+#     published by the Free Software Foundation, either version 3 of the
+#     License, or (at your option) any later version.
+
+#     This program is distributed in the hope that it will be useful,
+#     but WITHOUT ANY WARRANTY; without even the implied warranty of
+#     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#     GNU Affero General Public License for more details.
+
+#     You should have received a copy of the GNU Affero General Public License
+#     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+"""Managers of Objectapp"""
+from datetime import datetime
+
+from django.db import models
+from django.contrib.sites.models import Site
+
+DRAFT = 0
+HIDDEN = 1
+PUBLISHED = 2
+
+
+def tags_published():
+    """Return the published tags"""
+    from tagging.models import Tag
+    from objectapp.models import Gbobject
+    tags_gbobject_published = Tag.objects.usage_for_queryset(
+        Gbobject.published.all())
+    # Need to do that until the issue #44 of django-tagging is fixed
+    return Tag.objects.filter(name__in=[t.name for t in tags_gbobject_published])
+
+
+class AuthorPublishedManager(models.Manager):
+    """Manager to retrieve published authors"""
+
+    def get_query_set(self):
+        """Return published authors"""
+        now = datetime.now()
+        return super(AuthorPublishedManager, self).get_query_set().filter(
+            gbobjects__status=PUBLISHED,
+            gbobjects__start_publication__lte=now,
+            gbobjects__end_publication__gt=now,
+            gbobjects__sites=Site.objects.get_current()
+            ).distinct()
+
+
+def gbobjects_published(queryset):
+    """Return only the gbobjects published"""
+    now = datetime.now()
+    return queryset.filter(status=PUBLISHED,
+                           start_publication__lte=now,
+                           end_publication__gt=now,
+                           sites=Site.objects.get_current())
+
+
+class GbobjectPublishedManager(models.Manager):
+    """Manager to retrieve published gbobjects"""
+
+    def get_query_set(self):
+        """Return published gbobjects"""
+        return gbobjects_published(
+            super(GbobjectPublishedManager, self).get_query_set())
+
+    def on_site(self):
+        """Return gbobjects published on current site"""
+        return super(GbobjectPublishedManager, self).get_query_set(
+            ).filter(sites=Site.objects.get_current())
+
+    def search(self, pattern):
+        """Top level search method on gbobjects"""
+        try:
+            return self.advanced_search(pattern)
+        except:
+            return self.basic_search(pattern)
+
+    def advanced_search(self, pattern):
+        """Advanced search on gbobjects"""
+        from objectapp.search import advanced_search
+        return advanced_search(pattern)
+
+    def basic_search(self, pattern):
+        """Basic search on gbobjects"""
+        lookup = None
+        for pattern in pattern.split():
+            query_part = models.Q(content__icontains=pattern) | \
+                         models.Q(excerpt__icontains=pattern) | \
+                         models.Q(title__icontains=pattern)
+            if lookup is None:
+                lookup = query_part
+            else:
+                lookup |= query_part
+
+        return self.get_query_set().filter(lookup)