mediagoblin/media_types/blog/models.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16
  17 import datetime
  18
  19 from mediagoblin.db.base import Base
  20 from mediagoblin.db.models import Collection, User, MediaEntry
  21 from mediagoblin.db.mixin import GenerateSlugMixin
  22
  23 from mediagoblin.media_types.blog.lib import check_blog_slug_used
  24
  25 from mediagoblin.tools.text import cleaned_markdown_conversion
  26
  27 from sqlalchemy import (
  28     Column, Integer, ForeignKey, Unicode, UnicodeText, DateTime)
  29 from sqlalchemy.orm import relationship, backref
  30
  31
  32 class BlogMixin(GenerateSlugMixin):
  33     def check_slug_used(self, slug):
  34         return check_blog_slug_used(self.author, slug, self.id)
  35
  36 class Blog(Base, BlogMixin):
  37     __tablename__ = "mediatype__blogs"
  38     id = Column(Integer, primary_key=True)
  39     title = Column(Unicode)
  40     description = Column(UnicodeText)
  41     author = Column(Integer, ForeignKey(User.id), nullable=False, index=True) #similar to uploader
  42     created = Column(DateTime, nullable=False, default=datetime.datetime.now, index=True)
  43     slug = Column(Unicode)
  44
  45
  46 BACKREF_NAME = "blogpost__media_data"
  47
  48 class BlogPostData(Base):
  49     __tablename__ = "blogpost__mediadata"
  50
  51     # The primary key *and* reference to the main media_entry
  52     media_entry = Column(Integer, ForeignKey('core__media_entries.id'), primary_key=True)
  53     blog = Column(Integer, ForeignKey('mediatype__blogs.id'), nullable=False)
  54     get_media_entry = relationship("MediaEntry",
  55         backref=backref(BACKREF_NAME, uselist=False,
  56                         cascade="all, delete-orphan"))
  57
  58
  59 DATA_MODEL = BlogPostData
  60 MODELS = [BlogPostData, Blog]