2.0+ public access setup

migrations/env.py

@@ -0,0 +1,55 @@
+from __future__ import annotations
+
+from logging.config import fileConfig
+
+from alembic import context
+from flask import current_app
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_db = current_app.extensions["migrate"].db
+target_metadata = target_db.metadata
+
+
+def get_engine():
+    try:
+        return target_db.engine
+    except AttributeError:
+        return target_db.get_engine()
+
+
+def get_url() -> str:
+    return str(get_engine().url).replace("%", "%%")
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=get_url(),
+        target_metadata=target_metadata,
+        literal_binds=True,
+        compare_type=True,
+    )
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    with get_engine().connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            compare_type=True,
+        )
+
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()