Question

关注＆＃34;开发Backbone js＆＃34; http://addyosmani.github.io/backbone-fundamentals/#talking-to-the-server（搜索＆＃34;解析函数＆＃34;）

单击＆＃34;删除＆＃34;：即使使用此＆＃34;解析＆＃34;也不会从服务器（dbase）中删除该书。函数操作正常...给出了DELETE http命令，并给出了正确的书籍ID ...但是这并没有从dbase中删除它...

生成的URL命令如下所示：

DELETE http://localhost:4711/api/books/5417ff846b205d9c05000001

...这是在server.js

中触发以下功能

app.delete( '/api/books/:id', function( request, response ) {
   console.log( 'Deleting book with id: ' + request.params.id );
   ...

...但DELETE命令永远不会＆＃34;返回＆＃34; （在FF控制台中，你只需得到旋转器，它不会消失）......

Answer 1

在server.js中，按如下方式设置服务器：

// Module dependencies.
var application_root = __dirname,
    express = require("express"),   // Web framework
    path = require("path"),         // Utilities for dealing with file paths
    mongoose = require('mongoose'); // MongoDB integration

//Create server
var app = express.createServer();

// Configure server
app.configure(function () {
    app.use(express.bodyParser());     // parses request body and populates req.body
    app.use(express.methodOverride()); // checks req.body for HTTP method overrides
    app.use(app.router); // perform route lookup based on url and HTTP method
    app.use(express.static(path.join(application_root, "public"))); // Where to serve static content
    app.use(express.errorHandler({ dumpExceptions:true, showStack:true })); // Show all errors in development
});

//Start server
app.listen(4711, function () {
    console.log("Express server listening on port %d in %s mode", app.address().port, app.settings.env);
});

//  Connect to database
mongoose.connect('mongodb://localhost/library_database');


//Schemas
var Book = new  mongoose.Schema({
    title:String,
    author:String,
    releaseDate: Date
});

//Models
var BookModel = mongoose.model('Book', Book);

尝试按如下方式创建删除路线：

app.delete('/api/books/:id', function(req, res){
    console.log('Deleting book with id: ' + req.params.id);
    return BookModel.findById(req.params.id, function(err, book){
        return book.remove(function(err){
            if(!err){
                console.log('Book removed');
                return res.send('');
            } else {
                console.log(err);
            }
        });
    });
});

通过AJAX进行测试：

$.ajax({
  url:'/api/books/5417ff846b205d9c05000001',
  type: 'DELETE',
  success:function(data, textStatus, jqXHR){
    console.log("Post resposne:");
    console.dir(data);
    console.log(textStatus);
    console.dir(jqXHR);
  }
});

无法使用backbone.js从mongodb dbase删除记录

1 个答案: