37 lines
1011 B
Python
37 lines
1011 B
Python
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"""Add marathon cover_url field
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Revision ID: 019_add_marathon_cover
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Revises: 018_seed_static_content
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Create Date: 2024-12-21
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"""
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from typing import Sequence, Union
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy import inspect
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# revision identifiers, used by Alembic.
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revision: str = '019_add_marathon_cover'
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down_revision: Union[str, None] = '018_seed_static_content'
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def column_exists(table_name: str, column_name: str) -> bool:
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bind = op.get_bind()
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inspector = inspect(bind)
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columns = [col['name'] for col in inspector.get_columns(table_name)]
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return column_name in columns
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def upgrade() -> None:
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if not column_exists('marathons', 'cover_url'):
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op.add_column('marathons', sa.Column('cover_url', sa.String(500), nullable=True))
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def downgrade() -> None:
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if column_exists('marathons', 'cover_url'):
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op.drop_column('marathons', 'cover_url')
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