Write migration -- don't run, not tested
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4 changed files with 127 additions and 66 deletions
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@ -5,6 +5,7 @@ Revises: None
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Create Date: 2019-04-02 18:00:12.618368
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"""
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# pylint: disable=invalid-name
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# revision identifiers, used by Alembic.
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revision = "150252c1cdb1"
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@ -5,83 +5,139 @@ Revises: 150252c1cdb1
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Create Date: 2020-01-26 16:22:00.935963
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"""
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# pylint: disable=invalid-name
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# revision identifiers, used by Alembic.
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revision = '9159a6fed021'
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down_revision = '150252c1cdb1'
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revision = "9159a6fed021"
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down_revision = "150252c1cdb1"
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from itertools import chain
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.sql import table, column, text
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from hlds.definitions import location_definitions
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from data.migration import LOCATION_LEGACY_TO_HLDS, DISH_LEGACY_TO_HLDS
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def upgrade():
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# ### commands auto generated by Alembic - please adjust! ###
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op.create_table('order_item_choice',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('choice_id', sa.String(length=64), nullable=True),
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sa.Column('order_item_id', sa.Integer(), nullable=False),
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sa.Column('kind', sa.String(length=1), nullable=False),
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sa.Column('name', sa.String(length=120), nullable=True),
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sa.Column('value', sa.String(length=120), nullable=True),
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sa.ForeignKeyConstraint(['order_item_id'], ['order_item.id'], ),
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sa.PrimaryKeyConstraint('id')
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# First the simple actions
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op.create_table("order_item_choice",
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sa.Column("id", sa.Integer(), nullable=False),
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sa.Column("choice_id", sa.String(length=64), nullable=True),
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sa.Column("order_item_id", sa.Integer(), nullable=False),
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sa.Column("kind", sa.String(length=1), nullable=False),
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sa.Column("name", sa.String(length=120), nullable=True),
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sa.Column("value", sa.String(length=120), nullable=True),
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sa.ForeignKeyConstraint(["order_item_id"], ["order_item.id"], ),
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sa.PrimaryKeyConstraint("id")
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)
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op.drop_table('product')
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op.drop_table('location')
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op.add_column('order', sa.Column('courier_id', sa.Integer(), nullable=True))
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op.add_column('order', sa.Column('location_name', sa.String(length=128), nullable=True))
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op.drop_constraint(None, 'order', type_='foreignkey')
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op.drop_column('order', 'courrier_id')
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op.add_column('order_item', sa.Column('comment', sa.Text(), nullable=True))
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op.add_column('order_item', sa.Column('dish_id', sa.String(length=120), nullable=True))
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op.add_column('order_item', sa.Column('dish_name', sa.String(length=120), nullable=True))
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op.add_column('order_item', sa.Column('hlds_data_version', sa.String(length=40), nullable=True))
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op.add_column('order_item', sa.Column('price', sa.Integer(), nullable=False))
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op.add_column('order_item', sa.Column('user_name', sa.String(length=120), nullable=True))
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op.alter_column('order_item', 'paid',
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existing_type=sa.BOOLEAN(),
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nullable=False)
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op.drop_constraint(None, 'order_item', type_='foreignkey')
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op.drop_column('order_item', 'product_id')
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op.drop_column('order_item', 'name')
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op.drop_column('order_item', 'extra')
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# ### end Alembic commands ###
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op.add_column("order_item", sa.Column("hlds_data_version", sa.String(length=40), nullable=True))
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op.alter_column("order_item", "paid", existing_type=sa.BOOLEAN(), nullable=False)
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op.alter_column("order", "courrier_id", new_column_name="courier_id")
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op.alter_column("order_item", "extra", new_column_name="comment",
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existing_type=sa.String(254), type_=sa.Text())
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op.alter_column("order_item", "name", new_column_name="user_name")
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#----------------------------------------------------------------------------------------------
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# Migrate historical product data to order items
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# First create the new columns we will populate
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op.add_column("order_item", sa.Column("dish_id", sa.String(length=64), nullable=True))
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op.add_column("order_item", sa.Column("dish_name", sa.String(length=120), nullable=True))
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op.add_column("order_item", sa.Column("price", sa.Integer(), nullable=False))
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# Brief, ad-hoc table constructs just for our UPDATE statement, see
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# https://alembic.sqlalchemy.org/en/latest/ops.html#alembic.operations.Operations.execute
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order_item = table("order_item",
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column("product_id", sa.Integer),
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column("dish_id", sa.String),
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column("dish_name", sa.String),
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column("price", sa.Integer)
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)
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# Construct and execute queries
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new_dish_id = [
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order_item.update()
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.where(order_item.c.product_id == old_id)
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.values(dish_id=new_id)
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for old_id, new_id in DISH_LEGACY_TO_HLDS.items()
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]
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dish_name_and_price_from_product = text("""
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UPDATE order_item
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SET dish_name = (SELECT name FROM product WHERE product.id == order_item.product_id),
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price = (SELECT price FROM product WHERE product.id == order_item.product_id)"""
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)
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for query in chain(new_dish_id, [dish_name_and_price_from_product]):
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op.execute(query)
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# Historical product data migrated, drop obsolete column and table
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op.drop_constraint(None, "order_item", type_="foreignkey")
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op.drop_column("order_item", "product_id")
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op.drop_table("product")
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#----------------------------------------------------------------------------------------------
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# Migrate historical location data to orders
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op.add_column("order", sa.Column("location_name", sa.String(length=128), nullable=True))
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op.alter_column("order", "location_id", new_column_name="legacy_location_id")
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# Brief, ad-hoc table constructs just for our UPDATE statement, see
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# https://alembic.sqlalchemy.org/en/latest/ops.html#alembic.operations.Operations.execute
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order = table("order",
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column("legacy_location_id", sa.Integer),
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column("location_id", sa.String),
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column("location_name", sa.String)
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)
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# Construct and execute queries
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new_location_id = [
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order.update()
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.where(order.c.legacy_location_id == old_id)
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.values(location_id=new_id)
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for old_id, new_id in LOCATION_LEGACY_TO_HLDS.items()
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]
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location_name_from_location = text("""
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UPDATE order
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SET location_name = (SELECT name FROM location
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WHERE location.id == order.legacy_location_id)"""
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)
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for query in chain(new_location_id, [location_name_from_location]):
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op.execute(query)
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# Historical location data migrated, drop obsolete column and table
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op.drop_column("order", "legacy_location_id")
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op.drop_constraint(None, "order", type_="foreignkey")
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op.drop_table("location")
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def downgrade():
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"Don't use this. It will cripple the data."
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op.alter_column("order_item", "paid", existing_type=sa.Boolean(), nullable=True)
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op.alter_column("order", "courier_id", new_column_name="courrier_id")
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op.alter_column("order_item", "comment", new_column_name="extra",
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existing_type=sa.Text(), type_=sa.String(254))
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op.alter_column("order_item", "user_name", new_column_name="name")
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# ### commands auto generated by Alembic - please adjust! ###
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op.add_column('order_item', sa.Column('extra', sa.VARCHAR(length=254), nullable=True))
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op.add_column('order_item', sa.Column('name', sa.VARCHAR(length=120), nullable=True))
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op.add_column('order_item', sa.Column('product_id', sa.INTEGER(), nullable=True))
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op.create_foreign_key(None, 'order_item', 'product', ['product_id'], ['id'])
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op.alter_column('order_item', 'paid',
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existing_type=sa.BOOLEAN(),
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nullable=True)
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op.drop_column('order_item', 'user_name')
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op.drop_column('order_item', 'price')
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op.drop_column('order_item', 'hlds_data_version')
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op.drop_column('order_item', 'dish_name')
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op.drop_column('order_item', 'dish_id')
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op.drop_column('order_item', 'comment')
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op.add_column('order', sa.Column('courrier_id', sa.INTEGER(), nullable=True))
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op.create_foreign_key(None, 'order', 'location', ['location_id'], ['id'])
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op.drop_column('order', 'location_name')
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op.drop_column('order', 'courier_id')
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op.create_table('location',
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sa.Column('id', sa.INTEGER(), nullable=False),
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sa.Column('name', sa.VARCHAR(length=120), nullable=False),
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sa.Column('address', sa.VARCHAR(length=254), nullable=True),
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sa.Column('website', sa.VARCHAR(length=120), nullable=True),
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sa.Column('telephone', sa.VARCHAR(length=20), nullable=True),
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sa.PrimaryKeyConstraint('id')
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op.add_column("order_item", sa.Column("product_id", sa.INTEGER(), nullable=True))
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op.create_foreign_key(None, "order_item", "product", ["product_id"], ["id"])
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op.drop_column("order_item", "price")
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op.drop_column("order_item", "hlds_data_version")
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op.drop_column("order_item", "dish_name")
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op.drop_column("order_item", "dish_id")
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op.create_foreign_key(None, "order", "location", ["location_id"], ["id"])
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op.drop_column("order", "location_name")
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op.create_table("location",
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sa.Column("id", sa.INTEGER(), nullable=False),
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sa.Column("name", sa.VARCHAR(length=120), nullable=False),
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sa.Column("address", sa.VARCHAR(length=254), nullable=True),
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sa.Column("website", sa.VARCHAR(length=120), nullable=True),
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sa.Column("telephone", sa.VARCHAR(length=20), nullable=True),
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sa.PrimaryKeyConstraint("id")
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)
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op.create_table('product',
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sa.Column('id', sa.INTEGER(), nullable=False),
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sa.Column('location_id', sa.INTEGER(), nullable=True),
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sa.Column('name', sa.VARCHAR(length=120), nullable=False),
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sa.Column('price', sa.INTEGER(), nullable=False),
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sa.ForeignKeyConstraint(['location_id'], ['location.id'], ),
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sa.PrimaryKeyConstraint('id')
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op.create_table("product",
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sa.Column("id", sa.INTEGER(), nullable=False),
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sa.Column("location_id", sa.INTEGER(), nullable=True),
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sa.Column("name", sa.VARCHAR(length=120), nullable=False),
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sa.Column("price", sa.INTEGER(), nullable=False),
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sa.ForeignKeyConstraint(["location_id"], ["location.id"], ),
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sa.PrimaryKeyConstraint("id")
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)
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op.drop_table('order_item_choice')
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op.drop_table("order_item_choice")
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# ### end Alembic commands ###
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@ -12,7 +12,7 @@ class OrderItem(db.Model):
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order_id = db.Column(db.Integer, db.ForeignKey("order.id"), nullable=False)
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user_id = db.Column(db.Integer, db.ForeignKey("user.id"))
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user_name = db.Column(db.String(120))
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dish_id = db.Column(db.String(120), nullable=True)
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dish_id = db.Column(db.String(64), nullable=True)
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dish_name = db.Column(db.String(120), nullable=True)
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price = db.Column(db.Integer, nullable=False)
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paid = db.Column(
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@ -1,4 +1,4 @@
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LEGACY_TO_HLDS_TRANSLATION = {
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LOCATION_LEGACY_TO_HLDS = {
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2: "blauw_kotje",
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3: "ocean_garden",
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4: "delhaize",
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@ -26,3 +26,7 @@ LEGACY_TO_HLDS_TRANSLATION = {
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29: "fitchen",
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30: "kebab_anadolu",
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}
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DISH_LEGACY_TO_HLDS = {
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# TODO
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}
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