add timestamps to models

migrations/versions/253e9e2dae2d_init.py

@@ -17,7 +17,6 @@ depends_on = None
 
 
 def upgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
     op.create_table('users',
     sa.Column('display_name', sa.String(), nullable=True),
     sa.Column('id', sa.Integer(), nullable=False),
@@ -41,12 +40,9 @@ def upgrade():
     sa.ForeignKeyConstraint(['user_id'], ['users.id'], name=op.f('fk_sessions_user_id_users')),
     sa.PrimaryKeyConstraint('token', name=op.f('pk_sessions'))
     )
-    # ### end Alembic commands ###
 
 
 def downgrade():
-    # ### commands auto generated by Alembic - please adjust! ###
     op.drop_table('sessions')
     op.drop_table('account')
     op.drop_table('users')
-    # ### end Alembic commands ###

migrations/versions/da57b5eb3df7_add_timestamps.py

@@ -0,0 +1,34 @@
+"""add timestamps
+
+Revision ID: da57b5eb3df7
+Revises: 253e9e2dae2d
+Create Date: 2017-07-25 10:09:23.233340
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'da57b5eb3df7'
+down_revision = '253e9e2dae2d'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.add_column('account', sa.Column('created_at', sa.DateTime(), nullable=False))
+    op.add_column('account', sa.Column('updated_at', sa.DateTime(), nullable=False))
+    op.add_column('sessions', sa.Column('created_at', sa.DateTime(), nullable=False))
+    op.add_column('sessions', sa.Column('updated_at', sa.DateTime(), nullable=False))
+    op.add_column('users', sa.Column('created_at', sa.DateTime(), nullable=False))
+    op.add_column('users', sa.Column('updated_at', sa.DateTime(), nullable=False))
+
+
+def downgrade():
+    op.drop_column('users', 'updated_at')
+    op.drop_column('users', 'created_at')
+    op.drop_column('sessions', 'updated_at')
+    op.drop_column('sessions', 'created_at')
+    op.drop_column('account', 'updated_at')
+    op.drop_column('account', 'created_at')

model.py

@@ -1,16 +1,18 @@
-import datetime
+from datetime import datetime
 
 from app import db
 
-model = db.Model
+class TimestampMixin(object):
+    created_at = db.Column(db.DateTime, default=datetime.utcnow, nullable=False)
+    updated_at = db.Column(db.DateTime, default=datetime.utcnow,  onupdate=datetime.utcnow, nullable=False)
 
-class User(db.Model):
+class User(db.Model, TimestampMixin):
     __tablename__ = 'users'
 
     display_name = db.Column(db.String)
     id = db.Column(db.Integer, primary_key=True)
 
-class Account(db.Model):
+class Account(db.Model, TimestampMixin):
 
     user = db.relationship(User)
     user_id = db.Column(db.Integer, db.ForeignKey('users.id'))
@@ -26,7 +28,7 @@ class Account(db.Model):
     policy_keep_latest = db.Column(db.Integer)
     policy_delete_every = db.Column(db.Interval)
 
-class Session(db.Model):
+class Session(db.Model, TimestampMixin):
     __tablename__ = 'sessions'
 
     user = db.relationship(User)