server/models/application.js

   1 'use strict'
   2
   3 module.exports = function (sequelize, DataTypes) {
   4   const Application = sequelize.define('Application',
   5     {
   6       migrationVersion: {
   7         type: DataTypes.INTEGER,
   8         defaultValue: 0,
   9         allowNull: false,
  10         validate: {
  11           isInt: true
  12         }
  13       }
  14     },
  15     {
  16       classMethods: {
  17         loadMigrationVersion,
  18         updateMigrationVersion
  19       }
  20     }
  21   )
  22
  23   return Application
  24 }
  25
  26 // ---------------------------------------------------------------------------
  27
  28 function loadMigrationVersion (callback) {
  29   const query = {
  30     attributes: [ 'migrationVersion' ]
  31   }
  32
  33   return this.findOne(query).asCallback(function (err, data) {
  34     const version = data ? data.migrationVersion : null
  35
  36     return callback(err, version)
  37   })
  38 }
  39
  40 function updateMigrationVersion (newVersion, transaction, callback) {
  41   const options = {
  42     where: {}
  43   }
  44
  45   if (!callback) {
  46     transaction = callback
  47   } else {
  48     options.transaction = transaction
  49   }
  50
  51   return this.update({ migrationVersion: newVersion }, options).asCallback(callback)
  52 }