Add working Alembic migration setup using Flask-Alembic.

api/requirements.txt

@@ -11,12 +11,13 @@ SQLAlchemy==1.1.4
 SQLAlchemy-Utils==0.32.9
 Flask-SQLAlchemy==2.1
 psycopg2==2.6.2
-Flask-Migrate==2.0.3
+Flask-Alembic==2.0.1
 
 # Utilities
 arrow==0.8.0
 jsonschema==2.6.0
 requests==2.12.1
+bpython>=0.15
 
 # Documentation
 Sphinx>=1.4.8

api/rookeries/app.py

@@ -14,6 +14,6 @@ def make_api_app(import_name, **kwargs):
     api_app = flask.Flask(import_name, **kwargs)
     errors.attach_error_handlers_to_api_app(api_app)
     database.db.init_app(api_app)
-    database.migrations.init_app(api_app, database.db)
+    database.migrations.init_app(api_app)
     security.jwt.init_app(api_app)
     return api_app

api/rookeries/database.py

@@ -7,12 +7,12 @@ Database code for handling the retrieval and storage of journal entries.
 
 import os
 
-import flask_migrate
+import flask_alembic
 import flask_sqlalchemy
 
 
 db = flask_sqlalchemy.SQLAlchemy()
-migrations = flask_migrate.Migrate()
+migrations = flask_alembic.Alembic()
 
 EXTERNAL_DB_URI_PARAM = 'ROOKERIES_SQLALCHEMY_DATABASE_URI'
 DEFAULT_DB_CONNECTION = 'postgresql+psycopg2://admin:password@db:5432/rookeries'

api/rookeries/migrations/script.py.mako

@@ -0,0 +1,25 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+import sqlalchemy_utils
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}