ah-sequelize-plugin

ah-sequelize-plugin

This plugin will use the sequelize orm to create api.models which contain your sequelize models

Setup

• install this plugin: npm install ah-sequelize-plugin --save
• be sure to enable the plugin within actionhero (config/plugins.js)
• you will need to add the sequelize package (npm install sequelize --save) to your package.json
• you will need to add the sequelize-fixtures package (npm install sequelize-fixtures --save) to your package.json
• you will need to add the mysql (or other supported database) package (npm install mysql --save) to your package.json
  • there are many options you can pass to sequelize. You can learn more here: http://sequelize.readthedocs.org/en/latest/api/sequelize/index.html
• you will need to add the sequelize-cli package (npm install sequelize-cli) to your package.json
  • you could install it globally instead (npm install -g sequelize-cli)

A ./config/sequelize.js file will be created which will store your database configuration

Models

Use the exports form of sequelize models in ./models with the file name matching that of the model, IE:

module.exports = function(sequelize, DataTypes, api) {
  return sequelize.define("Project", {
    name: DataTypes.STRING,
    description: DataTypes.TEXT
  })
}

Models are loaded into api.models, so the example above would be api.models.Project. These module.exports allow for a third optional parameter "api" which is the ActionHero API object. This can be used to access configs and initializer functions, among other things.

Migrations

This plugin does not condone the use of Sequelize.sync() in favor of migrations. Keep you migrations in ./migrations and use the sequelize-cli to execute them.

An example migration to create a users table would look like:

// from ./migrations/20140101000001-create-users.js

var Promise = require('bluebird');

module.exports = {
  up: function(migration, DataTypes) {
    return Promise.all([
      migration.createTable('users', {
        id: {
          type: DataTypes.INTEGER,
          primaryKey: true,
          autoIncrement: true
        },
        name: DataTypes.STRING,
        email: DataTypes.STRING,
        phone: DataTypes.STRING,
        passwordHash: DataTypes.TEXT,
        passwordSalt: DataTypes.TEXT,
        createdAt: DataTypes.DATE,
        updatedAt: DataTypes.DATE
      })
    ]).then(function(){
      return Promise.all([
        migration.addIndex('users', ['email'], {
          indexName: 'email_index',
          indicesType: 'UNIQUE'
        }),
        migration.addIndex('users', ['name'], {
          indexName: 'name_index',
          indicesType: 'UNIQUE'
        }),
        migration.addIndex('users', ['phone'], {
          indexName: 'phone_index',
          indicesType: 'UNIQUE'
        })
      ]);
    });
  },
 
  down: function(migration, DataTypes) {
    return Promise.all([
      migration.dropTable('users')
    ]);
  }
}

You can use the sequelize-cli to create and execute migrations.

api.sequelize.migrate and api.sequelize.migrateUndo are now based on Umzug, and are maintained for legacy purposes. An Umzug instance is available at api.sequelize.umzug, and should be used to perform (and undo) migrations programatically using the official API.

If you want to sync, you can api.sequelize.sequelize.sync() or api.models.yourModel.sync();

By default, ah-sequelize-plugin will automatically execute any pending migrations when Actionhero starts up. You can disable this behaviour by adding autoMigrate: false to your sequelize config.

Associations

If you want to declare associations, best practice has you create an associations.js initializer within your project which might look like this:

module.exports = {
    loadPriority: 1000,
    startPriority: 1002, // priority has to be after models have been loaded
    stopPriority: 1000,

    associations: {},

    initialize: function (api, next) {
        next();
    },
    start: function (api, next) {
        api.models.user.hasMany(api.models.posts);
        api.models.posts.hasMany(api.models.comments);

        api.models.comments.belongsTo(api.models.posts);
        api.models.posts.belongsTo(api.models.user);

        next();
    },
    stop: function (api, next) {
        next();
    }
};

Fixtures

We use the sequelize-fixtures package to load in JSON-defined fixtures in the test NODE_ENV. Store your fixtures in ./test/fixtures/*.json or ./test/fixtures/*.yml.

By default, ah-sequelize-plugin will not automatically load your fixtures when Actionhero starts up. You can enable this behaviour by adding loadFixtures: true to your sequelize config.