Configuration

Configuration for Alembic and its migrations uses the following Flask config keys.

flask_alembic.config.ALEMBIC

A dictionary containing general configuration, mostly used by Config and ScriptDirectory. See Alembic’s docs on config.

flask_alembic.config.ALEMBIC_CONTEXT

A dictionary containing options passed to MigrationContext by EnvironmentContext.configure. See Alembic’s docs on runtime.

ALEMBIC["script_location"] is the location of the migrations directory. If it is not an absolute path, it will be relative to the application root. It defaults to migrations relative to the application root.

ALEMBIC_CONTEXt["compare_type"] defaults to True in Alembic. ALEMBIC_CONTEXT["compare_server_default"] defaults to True, it would otherwise default to False in Alembic.