1
  2/**
  3 * Module dependencies.
  4 */
  5
  6var mongoose = require('mongoose')
  7  , Schema = mongoose.Schema;
  8
  9/**
 10 * Schema definition
 11 */
 12
 13// recursive embedded-document schema
 14
 15var Comment = new Schema();
 16
 17Comment.add({
 18    title     : { type: String, index: true }
 19  , date      : Date
 20  , body      : String
 21  , comments  : [Comment]
 22});
 23
 24var BlogPost = new Schema({
 25    title     : { type: String, index: true }
 26  , slug      : { type: String, lowercase: true, trim: true }
 27  , date      : Date
 28  , buf       : Buffer
 29  , comments  : [Comment]
 30  , creator   : Schema.ObjectId
 31});
 32
 33var Person = new Schema({
 34    name: {
 35        first: String
 36      , last : String
 37    }
 38  , email: { type: String, required: true, index: { unique: true, sparse: true } }
 39  , alive: Boolean
 40});
 41
 42/**
 43 * Accessing a specific schema type by key
 44 */
 45
 46BlogPost.path('date')
 47.default(function(){
 48   return new Date()
 49 })
 50.set(function(v){
 51   return v == 'now' ? new Date() : v;
 52 });
 53
 54/**
 55 * Pre hook.
 56 */
 57
 58BlogPost.pre('save', function(next, done){
 59  emailAuthor(done); // some async function
 60  next();
 61});
 62
 63/**
 64 * Methods
 65 */
 66
 67BlogPost.methods.findCreator = function (callback) {
 68  return this.db.model('Person').findById(this.creator, callback);
 69}
 70
 71BlogPost.statics.findByTitle = function (title, callback) {
 72  return this.find({ title: title }, callback);
 73}
 74
 75BlogPost.methods.expressiveQuery = function (creator, date, callback) {
 76  return this.find('creator', creator).where('date').gte(date).run(callback);
 77}
 78
 79/**
 80 * Plugins
 81 */
 82
 83function slugGenerator (options){
 84  options = options || {};
 85  var key = options.key || 'title';
 86
 87  return function slugGenerator(schema){
 88    schema.path(key).set(function(v){
 89      this.slug = v.toLowerCase().replace(/[^a-z0-9]/g, '').replace(/-+/g, '');
 90      return v;
 91    });
 92  };
 93};
 94
 95BlogPost.plugin(slugGenerator());
 96
 97/**
 98 * Define model.
 99 */
100
101mongoose.model('BlogPost', BlogPost);
102mongoose.model('Person', Person);