Mittwoch, 18. Mai, 2016

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MongoDB CRUD the MVC way with Passport Authentication 62 • findByIdAndRemove()¹²⁰ Since you’re already using the userById() method, you’re going to use the findByIdAndRemove() method. In your app/controllers/users.server.controller.js file add a new delete() method: 1 exports.delete = function(req, res, next) { 2 req.user.remove(function(err) { 3 if (err) { 4 return next(err); 5 } 6 else { 7 res.json(req.user); 8 } 9 }) 10 }; Now, in app/routes/users.server.routes.js file change the route with the userId parameter to be like this: 1 app.route('/users/:userId').get(users.read).put(users.update).delete(users.delet\ 2 e); To test the delete method, run node server and issue a DELETE request, example with curl (OFC replace id] as before): 1 $ curl -X DELETE localhost:1337/users/[id] Few additional goodies Indexes A unique index validates the uniqueness of a document field across a collection. Since you most likely want the username to be unique, you have to add this to your User model: ¹²⁰http://mongoosejs.com/docs/api.html#model_Model.findByIdAndRemove
MongoDB CRUD the MVC way with Passport Authentication 63 1 var UserSchema = new Schema({ 2 ... 3 username: { 4 type: String, 5 unique: true 6 }, 7 ... 8 }); Mongoose also supports secondary indexes using the index property. So, if you know that your application will use a lot of queries with the email field, you could optimize these queries by creating an email secondary index: 1 var UserSchema = new Schema({ 2 ... 3 email: { 4 type: String, 5 index: true 6 }, 7 ... 8 }); Mongoose middleware Mongoose has pre and post middlewares which execute, as you may imagine, pre and post some operation. Template looks like this: 1 UserSchema.pre('save', function(next) { 2 if (something) { 3 next() 4 } else { 5 next(new Error('No can do, sir!')); 6 } 7 }); So, basically, before you save something to MongoDB some action is performed before that - you will use this later for hashing the password before saving it to the MongoDB. Mongoose lets you configure a lot more options like default values¹²¹, custom getters/setters¹²², virtual attributes¹²³, custom methods and statics¹²⁴, custom validation¹²⁵, custom references to other ¹²¹http://mongoosejs.com/docs/2.7.x/docs/defaults.html ¹²²http://mongoosejs.com/docs/2.7.x/docs/getters-setters.html ¹²³http://mongoosejs.com/docs/2.7.x/docs/virtuals.html ¹²⁴http://mongoosejs.com/docs/2.7.x/docs/methods-statics.html ¹²⁵http://mongoosejs.com/docs/2.7.x/docs/validation.html
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Mittwoch, 18. Mai, 2016

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