Creating from ES6 Classes Using loadClass() - 图1mongoose

Creating from ES6 Classes Using loadClass() - 图2mongoose

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Creating from ES6 Classes Using loadClass() ](#creating-from-es6-classes-using-loadclass)

Mongoose allows creating schemas from ES6 classes. The loadClass() function lets you pull in methods, statics, and virtuals from an ES6 class. A class method maps to a schema method, a static method maps to a schema static, and getters/setters map to virtuals.

  2.     const schema = new Schema({ firstName: String, lastName: String });
  4.     class PersonClass {
  5.       // `fullName` becomes a virtual
  6.       get fullName() {
  7.         return `${this.firstName} ${this.lastName}`;
  8.       }
  10.       set fullName(v) {
  11.         const firstSpace = v.indexOf(' ');
  12.         this.firstName = v.split(' ')[0];
  13.         this.lastName = firstSpace === -1 ? '' : v.substr(firstSpace + 1);
  14.       }
  16.       // `getFullName()` becomes a document method
  17.       getFullName() {
  18.         return `${this.firstName} ${this.lastName}`;
  19.       }
  21.       // `findByFullName()` becomes a static
  22.       static findByFullName(name) {
  23.         const firstSpace = name.indexOf(' ');
  24.         const firstName = name.split(' ')[0];
  25.         const lastName = firstSpace === -1 ? '' : name.substr(firstSpace + 1);
  26.         return this.findOne({ firstName, lastName });
  27.       }
  28.     }
  30.     schema.loadClass(PersonClass);
  31.     var Person = db.model('Person', schema);
  33.     Person.create({ firstName: 'Jon', lastName: 'Snow' }).
  34.       then(doc => {
  35.         assert.equal(doc.fullName, 'Jon Snow');
  36.         doc.fullName = 'Jon Stark';
  37.         assert.equal(doc.firstName, 'Jon');
  38.         assert.equal(doc.lastName, 'Stark');
  39.         return Person.findByFullName('Jon Snow');
  40.       }).
  41.       then(doc => {
  42.         assert.equal(doc.fullName, 'Jon Snow');
  43.       });