Added alembic and flask-migrate to haldis
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parent
3aa16e2690
commit
2d6640b8b9
8 changed files with 282 additions and 1 deletions
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@ -8,6 +8,12 @@ from models import *
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from forms import *
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from utils import *
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from views import *
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from flask.ext.migrate import Migrate, MigrateCommand
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from flask.ext.script import Manager
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if __name__ == '__main__':
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app.run()
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# do it here, because make accessing db changes only possible when executing the program directly
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migrate = Migrate(app, db)
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manager = Manager(app)
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manager.add_command('db', MigrateCommand)
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manager.run()
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6
app/migrations/README
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6
app/migrations/README
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@ -0,0 +1,6 @@
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Generic single-database configuration.
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+On the existing databases, initialize flask-migrate and alembic with:
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+```
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+python haldis.py db stamp "354676f60be"
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+```
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45
app/migrations/alembic.ini
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45
app/migrations/alembic.ini
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@ -0,0 +1,45 @@
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# A generic, single database configuration.
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[alembic]
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# template used to generate migration files
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# file_template = %%(rev)s_%%(slug)s
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# set to 'true' to run the environment during
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# the 'revision' command, regardless of autogenerate
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# revision_environment = false
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# Logging configuration
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[loggers]
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keys = root,sqlalchemy,alembic
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[handlers]
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keys = console
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[formatters]
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keys = generic
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[logger_root]
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level = WARN
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handlers = console
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qualname =
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[logger_sqlalchemy]
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level = WARN
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handlers =
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qualname = sqlalchemy.engine
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[logger_alembic]
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level = INFO
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handlers =
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qualname = alembic
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[handler_console]
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class = StreamHandler
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args = (sys.stderr,)
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level = NOTSET
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formatter = generic
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[formatter_generic]
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format = %(levelname)-5.5s [%(name)s] %(message)s
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datefmt = %H:%M:%S
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73
app/migrations/env.py
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73
app/migrations/env.py
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@ -0,0 +1,73 @@
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from __future__ import with_statement
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from alembic import context
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from sqlalchemy import engine_from_config, pool
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from logging.config import fileConfig
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# this is the Alembic Config object, which provides
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# access to the values within the .ini file in use.
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config = context.config
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# Interpret the config file for Python logging.
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# This line sets up loggers basically.
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fileConfig(config.config_file_name)
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# add your model's MetaData object here
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# for 'autogenerate' support
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# from myapp import mymodel
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# target_metadata = mymodel.Base.metadata
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from flask import current_app
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config.set_main_option('sqlalchemy.url', current_app.config.get('SQLALCHEMY_DATABASE_URI'))
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target_metadata = current_app.extensions['migrate'].db.metadata
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# other values from the config, defined by the needs of env.py,
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# can be acquired:
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# my_important_option = config.get_main_option("my_important_option")
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# ... etc.
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def run_migrations_offline():
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"""Run migrations in 'offline' mode.
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This configures the context with just a URL
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and not an Engine, though an Engine is acceptable
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here as well. By skipping the Engine creation
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we don't even need a DBAPI to be available.
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Calls to context.execute() here emit the given string to the
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script output.
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"""
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url = config.get_main_option("sqlalchemy.url")
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context.configure(url=url)
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with context.begin_transaction():
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context.run_migrations()
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def run_migrations_online():
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"""Run migrations in 'online' mode.
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In this scenario we need to create an Engine
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and associate a connection with the context.
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"""
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engine = engine_from_config(config.get_section(config.config_ini_section),
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prefix='sqlalchemy.',
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poolclass=pool.NullPool)
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connection = engine.connect()
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context.configure(connection=connection,
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target_metadata=target_metadata,
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**current_app.extensions['migrate'].configure_args)
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try:
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with context.begin_transaction():
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context.run_migrations()
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finally:
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connection.close()
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if context.is_offline_mode():
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run_migrations_offline()
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else:
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run_migrations_online()
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22
app/migrations/script.py.mako
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22
app/migrations/script.py.mako
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@ -0,0 +1,22 @@
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"""${message}
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Revision ID: ${up_revision}
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Revises: ${down_revision}
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Create Date: ${create_date}
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"""
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# revision identifiers, used by Alembic.
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revision = ${repr(up_revision)}
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down_revision = ${repr(down_revision)}
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from alembic import op
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import sqlalchemy as sa
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${imports if imports else ""}
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def upgrade():
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${upgrades if upgrades else "pass"}
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def downgrade():
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${downgrades if downgrades else "pass"}
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54
app/migrations/versions/2d696203e56_.py
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54
app/migrations/versions/2d696203e56_.py
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"""Make it possible for some columns to be null
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Revision ID: 2d696203e56
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Revises: 354676f60be
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Create Date: 2015-06-04 17:25:39.119678
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"""
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# revision identifiers, used by Alembic.
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revision = '2d696203e56'
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down_revision = '354676f60be'
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from alembic import op
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import sqlalchemy as sa
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def upgrade():
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### commands auto generated by Alembic - please adjust! ###
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op.alter_column('location', 'name',
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existing_type=sa.VARCHAR(length=120),
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nullable=False)
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op.alter_column('order_item', 'order_id',
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existing_type=sa.INTEGER(),
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nullable=False)
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op.alter_column('product', 'name',
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existing_type=sa.VARCHAR(length=120),
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nullable=False)
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op.alter_column('product', 'price',
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existing_type=sa.INTEGER(),
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nullable=False)
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op.alter_column('user', 'username',
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existing_type=sa.VARCHAR(length=80),
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nullable=False)
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### end Alembic commands ###
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def downgrade():
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### commands auto generated by Alembic - please adjust! ###
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op.alter_column('user', 'username',
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existing_type=sa.VARCHAR(length=80),
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nullable=True)
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op.alter_column('product', 'price',
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existing_type=sa.INTEGER(),
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nullable=True)
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op.alter_column('product', 'name',
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existing_type=sa.VARCHAR(length=120),
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nullable=True)
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op.alter_column('order_item', 'order_id',
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existing_type=sa.INTEGER(),
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nullable=True)
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op.alter_column('location', 'name',
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existing_type=sa.VARCHAR(length=120),
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nullable=True)
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### end Alembic commands ###
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74
app/migrations/versions/354676f60be_.py
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74
app/migrations/versions/354676f60be_.py
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"""Initial configuration
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Revision ID: 354676f60be
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Revises: None
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Create Date: 2015-06-04 17:17:28.933840
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"""
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# revision identifiers, used by Alembic.
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revision = '354676f60be'
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down_revision = None
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from alembic import op
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import sqlalchemy as sa
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def upgrade():
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### commands auto generated by Alembic - please adjust! ###
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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.String(length=120), nullable=True),
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sa.Column('address', sa.String(length=254), nullable=True),
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sa.Column('website', sa.String(length=120), nullable=True),
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sa.PrimaryKeyConstraint('id')
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)
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op.create_table('user',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('username', sa.String(length=80), nullable=True),
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sa.Column('admin', sa.Boolean(), nullable=True),
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sa.Column('bias', sa.Integer(), nullable=True),
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sa.PrimaryKeyConstraint('id'),
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sa.UniqueConstraint('username')
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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.String(length=120), nullable=True),
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sa.Column('price', sa.Integer(), nullable=True),
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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.create_table('order',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('courrier_id', sa.Integer(), nullable=True),
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sa.Column('location_id', sa.Integer(), nullable=True),
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sa.Column('starttime', sa.DateTime(), nullable=True),
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sa.Column('stoptime', sa.DateTime(), nullable=True),
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sa.Column('public', sa.Boolean(), nullable=True),
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sa.ForeignKeyConstraint(['courrier_id'], ['user.id'], ),
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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.create_table('order_item',
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sa.Column('id', sa.Integer(), nullable=False),
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sa.Column('user_id', sa.Integer(), nullable=True),
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sa.Column('order_id', sa.Integer(), nullable=True),
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sa.Column('product_id', sa.Integer(), nullable=True),
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sa.Column('name', sa.String(length=120), nullable=True),
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sa.ForeignKeyConstraint(['order_id'], ['order.id'], ),
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sa.ForeignKeyConstraint(['product_id'], ['product.id'], ),
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sa.ForeignKeyConstraint(['user_id'], ['user.id'], ),
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sa.PrimaryKeyConstraint('id')
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)
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### end Alembic commands ###
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def downgrade():
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### commands auto generated by Alembic - please adjust! ###
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op.drop_table('order_item')
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op.drop_table('order')
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op.drop_table('product')
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op.drop_table('user')
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op.drop_table('location')
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### end Alembic commands ###
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@ -6,6 +6,7 @@ Flask-Login==0.2.11
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Flask-OAuthlib==0.8.0
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Flask-SQLAlchemy==2.0
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Flask-WTF==0.10.3
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Flask-Migrate==1.4.0
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itsdangerous==0.24
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Jinja2==2.7.2
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MarkupSafe==0.23
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