Adding in the delete api and the delete and create UI.

data/database.py

@@ -776,6 +776,7 @@ class LogEntry(BaseModel):
 
 class Messages(BaseModel):
   content = TextField()
+  uuid = CharField(default=uuid_generator, index=True)
 
 class RepositoryActionCount(BaseModel):
   repository = ForeignKeyField(Repository)

data/migrations/versions/c156deb8845d_add_uuid_to_messages.py

@@ -0,0 +1,23 @@
+"""Add uuid to messages
+
+Revision ID: c156deb8845d
+Revises: a3002f7638d5
+Create Date: 2016-10-11 15:44:29.450181
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = 'c156deb8845d'
+down_revision = 'a3002f7638d5'
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+
+def upgrade(tables):
+    op.add_column('messages', sa.Column('uuid', sa.String(length=36), nullable=True))
+
+
+def downgrade(tables):
+    op.drop_column('messages', 'uuid')

data/model/message.py

@@ -11,3 +11,9 @@ def create(messages):
   for message in messages:
     inserted.append(Messages.create(content=message['content']))
   return inserted
+
+def delete_message(uuids):
+  """Delete message from the database"""
+  if not uuids:
+    return
+  Messages.delete().where(Messages.uuid << uuids).execute()