支持按最新评论排序

migrations/versions/0ad9747d0874_record_timestap_of_the_lastest_comment.py

@@ -0,0 +1,28 @@
+"""record timestap of the lastest comment
+
+Revision ID: 0ad9747d0874
+Revises: 
+Create Date: 2020-09-10 21:06:17.163526
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '0ad9747d0874'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.add_column('post', sa.Column('comment_timestamp', sa.Integer(), nullable=True))
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_column('post', 'comment_timestamp')
+    # ### end Alembic commands ###