server/models/author.js

   1 'use strict'
   2
   3 const customUsersValidators = require('../helpers/custom-validators').users
   4
   5 module.exports = function (sequelize, DataTypes) {
   6   const Author = sequelize.define('Author',
   7     {
   8       name: {
   9         type: DataTypes.STRING,
  10         allowNull: false,
  11         validate: {
  12           usernameValid: function (value) {
  13             const res = customUsersValidators.isUserUsernameValid(value)
  14             if (res === false) throw new Error('Username is not valid.')
  15           }
  16         }
  17       }
  18     },
  19     {
  20       indexes: [
  21         {
  22           fields: [ 'name' ]
  23         },
  24         {
  25           fields: [ 'podId' ]
  26         },
  27         {
  28           fields: [ 'userId' ],
  29           unique: true
  30         },
  31         {
  32           fields: [ 'name', 'podId' ],
  33           unique: true
  34         }
  35       ],
  36       classMethods: {
  37         associate,
  38
  39         findOrCreateAuthor
  40       }
  41     }
  42   )
  43
  44   return Author
  45 }
  46
  47 // ---------------------------------------------------------------------------
  48
  49 function associate (models) {
  50   this.belongsTo(models.Pod, {
  51     foreignKey: {
  52       name: 'podId',
  53       allowNull: true
  54     },
  55     onDelete: 'cascade'
  56   })
  57
  58   this.belongsTo(models.User, {
  59     foreignKey: {
  60       name: 'userId',
  61       allowNull: true
  62     },
  63     onDelete: 'cascade'
  64   })
  65 }
  66
  67 function findOrCreateAuthor (name, podId, userId, transaction, callback) {
  68   if (!callback) {
  69     callback = transaction
  70     transaction = null
  71   }
  72
  73   const author = {
  74     name,
  75     podId,
  76     userId
  77   }
  78
  79   const query = {
  80     where: author,
  81     defaults: author
  82   }
  83
  84   if (transaction) query.transaction = transaction
  85
  86   this.findOrCreate(query).asCallback(function (err, result) {
  87     if (err) return callback(err)
  88
  89     // [ instance, wasCreated ]
  90     return callback(null, result[0])
  91   })
  92 }