Merge "Store history of a comment when editing"

storyboard/db/api/comments.py

@@ -26,6 +26,12 @@ def comment_create(values):
 
 
 def comment_update(comment_id, values):
+    comment = api_base.entity_get(models.Comment, comment_id)
+    old_dict = {
+        'comment_id': comment_id,
+        'content': comment.content
+    }
+    api_base.entity_create(models.HistoricalComment, old_dict)
     return api_base.entity_update(models.Comment, comment_id, values)
 
 

storyboard/db/migration/alembic_migrations/versions/059_add_a_table_for_comment_history.py

@@ -0,0 +1,49 @@
+# 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.
+#
+
+"""Add a table for comment history
+
+Revision ID: 059
+Revises: 058
+Create Date: 2016-06-21 14:00:20.515139
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '059'
+down_revision = '058'
+
+
+from alembic import op
+import sqlalchemy as sa
+
+from storyboard.db.decorators import UTCDateTime
+from storyboard.db.models import MYSQL_MEDIUM_TEXT
+
+
+def upgrade(active_plugins=None, options=None):
+    op.create_table(
+        'comments_history',
+        sa.Column('id', sa.Integer(), nullable=False),
+        sa.Column('created_at', UTCDateTime(), nullable=True),
+        sa.Column('updated_at', UTCDateTime(), nullable=True),
+        sa.Column('content', MYSQL_MEDIUM_TEXT, nullable=True),
+        sa.Column('comment_id', sa.Integer(), nullable=False),
+        sa.ForeignKeyConstraint(['comment_id'], ['comments.id'],
+                                name='fk_comment_id'),
+        sa.PrimaryKeyConstraint('id')
+    )
+
+
+def downgrade(active_plugins=None, options=None):
+    op.drop_table('comments_history')

storyboard/db/models.py

@@ -508,6 +508,15 @@ class Comment(FullText, ModelBuilder, Base):
     parent = relationship('Comment', remote_side=[id], backref='children')
 
 
+class HistoricalComment(FullText, ModelBuilder, Base):
+    __tablename__ = 'comments_history'
+    __fulltext_columns__ = ['content']
+
+    content = Column(MYSQL_MEDIUM_TEXT)
+    comment_id = Column(Integer, ForeignKey('comments.id'), nullable=False)
+    current = relationship(Comment, backref='history')
+
+
 # Subscription and notifications
 
 class Subscription(ModelBuilder, Base):