schema changes, part #1

alembic/README

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+Generic single-database configuration.

alembic/env.py

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+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from salvi.models import Base
+target_metadata = Base.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline() -> None:
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(
+        url=url,
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection, target_metadata=target_metadata
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

alembic/script.py.mako

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+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

alembic/versions/ae0587e14725_.py

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+"""empty message
+
+Sorry, due to unattended changes, upgrade from 1.0.0 is not possible. Sorry.
+
+Revision ID: ae0587e14725
+Revises: 
+Create Date: 2025-10-04 09:43:41.158057
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import mysql
+
+# revision identifiers, used by Alembic.
+revision: str = 'ae0587e14725'
+down_revision: Union[str, None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    #op.drop_index('pagepolicykey_passphrase_sec_code', table_name='pagepolicykey')
+    #op.drop_index('page_owner', table_name='page')
+    op.create_index(op.f('ix_page_calendar'), 'page', ['calendar'], unique=False)
+    op.create_index('page_calendar', 'page', ['calendar'], unique=False)
+    op.drop_index('user_id', table_name='usergroupmembership')
+    op.drop_index('user_id_2', table_name='usergroupmembership')
+    #op.drop_index('usergroupmembership_group_id', table_name='usergroupmembership')
+    #op.drop_index('usergroupmembership_user_id', table_name='usergroupmembership')
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_index('usergroupmembership_user_id', 'usergroupmembership', ['user_id'], unique=False)
+    op.create_index('usergroupmembership_group_id', 'usergroupmembership', ['group_id'], unique=False)
+    op.create_index('user_id_2', 'usergroupmembership', ['user_id', 'group_id'], unique=True)
+    op.create_index('user_id', 'usergroupmembership', ['user_id', 'group_id'], unique=True)
+    op.drop_index('page_calendar', table_name='page')
+    op.drop_index(op.f('ix_page_calendar'), table_name='page')
+    op.create_index('page_owner', 'page', ['owner_id'], unique=False)
+    op.create_table('upload',
+    sa.Column('id', mysql.INTEGER(display_width=11), autoincrement=True, nullable=False),
+    sa.Column('name', mysql.VARCHAR(length=256), nullable=False),
+    sa.Column('url_name', mysql.VARCHAR(length=256), nullable=True),
+    sa.Column('filetype', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False),
+    sa.Column('filesize', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False),
+    sa.Column('upload_date', mysql.DATETIME(), nullable=False),
+    sa.Column('md5', mysql.VARCHAR(length=32), nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    mariadb_collate='utf8mb4_general_ci',
+    mariadb_default_charset='utf8mb4',
+    mariadb_engine='InnoDB'
+    )
+    op.create_index('upload_upload_date', 'upload', ['upload_date'], unique=False)
+    op.create_index('upload_md5', 'upload', ['md5'], unique=False)
+    op.create_table('pagepolicy',
+    sa.Column('id', mysql.INTEGER(display_width=11), autoincrement=True, nullable=False),
+    sa.Column('page_id', mysql.INTEGER(display_width=11), autoincrement=False, nullable=True),
+    sa.Column('type', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False),
+    sa.Column('key_id', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False),
+    sa.Column('sitewide', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False),
+    sa.ForeignKeyConstraint(['key_id'], ['pagepolicykey.id'], name='pagepolicy_FK_0_0'),
+    sa.ForeignKeyConstraint(['page_id'], ['page.id'], name='pagepolicy_FK_1_0'),
+    sa.PrimaryKeyConstraint('id'),
+    mariadb_collate='utf8mb4_general_ci',
+    mariadb_default_charset='utf8mb4',
+    mariadb_engine='InnoDB'
+    )
+    op.create_index('pagepolicy_page_id_key_id', 'pagepolicy', ['page_id', 'key_id'], unique=True)
+    op.create_index('pagepolicy_page_id', 'pagepolicy', ['page_id'], unique=False)
+    op.create_index('pagepolicy_key_id', 'pagepolicy', ['key_id'], unique=False)
+    op.create_table('pagepolicykey',
+    sa.Column('id', mysql.INTEGER(display_width=11), autoincrement=True, nullable=False),
+    sa.Column('passphrase', mysql.VARCHAR(length=255), nullable=False),
+    sa.Column('sec_code', mysql.INTEGER(display_width=11), autoincrement=False, nullable=False),
+    sa.PrimaryKeyConstraint('id'),
+    mariadb_collate='utf8mb4_general_ci',
+    mariadb_default_charset='utf8mb4',
+    mariadb_engine='InnoDB'
+    )
+    op.create_index('pagepolicykey_passphrase_sec_code', 'pagepolicykey', ['passphrase', 'sec_code'], unique=True)
+    # ### end Alembic commands ###