Backbone：从节点服务器成功响应后导航到下一页

Question

尝试从节点服务器实现登录功能。我能够将骨干模型的请求发送到节点服务器。节点服务器调用另一个站点并从另一个站点获取响应。
现在如果登录成功，则应显示另一页面的响应。但如果登录失败，登录页面应显示错误消息。
的型号：

var LoginModel = Backbone.Model.extend({
    url:'http://localhost:3000/login',

    defaults: {
        email:"",
        password:""
    },
    parse: function(resp) {
        console.log('Model: Got the response back');
        return resp;
    },
    login: function() {
        console.log('Model: Login function:'+JSON.stringify(this));
        this.save(
            {}, {
                success: function(resp) {
                    console.log('success'+JSON.stringify(resp));
                },
                error: function(error) {
                    console.log('error: '+JSON.stringify(error));
                }
            });
        console.log('Model: Got the response back:');
    }
});
var loginModel = new LoginModel();

查看：

var LoginView = Backbone.View.extend({
    url: 'http://localhost:3000/login',
    template:_.template('<div class="form-signin">'+
                        '<h2 class="form-signin-heading">Please sign in</h2>'+
                        '<input type="text" id="email" class="form-control" placeholder="Email address" required="" autofocus="">'+
                        '<input type="password" id="password" class="form-control" placeholder="Password" required="">'+
                        '<button id="loginBtn" class="btn btn-lg btn-primary btn-block" >Sign in</button>'+
                        '</div>'),
    events: {
        "click #loginBtn":"login"
    },
    initialize: function() {
        this.model.on('change', this.render, this); 
    },
    render: function() {
        var attributes = this.model.toJSON();
        this.$el.html(this.template(attributes));
    },
    login: function() {
      console.log('view signIn');
      this.model.set({
        "email": $('#email').val(),
        "password": $('#password').val()
      });
      this.model.login();
    }
});
var loginView = new LoginView({model: loginModel});
loginView.render();
$(".container").append(loginView.el);

  

    

注意：我是骨干新手并阅读路线。对我来说不太清楚。

  

Answer 1

  

Backbone.Router 提供了路由客户端页面的方法

因此，在您的情况下，您的代码应如下所示：

var LoginModel = Backbone.Model.extend({
    url:'http://localhost:3000/login',

    defaults: {
        email:"",
        password:""
    }
}

查看

var LoginView = Backbone.View.extend({
    el: '.container'
    template:_.template('...'),
    events: {
        "click #loginBtn":"login"
    },
    initialize: function() {
        this.listenTo(this.model, 'change', this.render); 
    },
    render: function() {
        var attributes = this.model.toJSON();
        this.$el.html(this.template(attributes));
    },
    login: function() {
        console.log('view signIn');
        this.model.set({
            "email": $('#email').val(),
            "password": $('#password').val()
        });

        console.log('Model: Login function:'+JSON.stringify(this.model));
        this.model.save(
            {}, {
            success: function(resp) {
                console.log('success'+JSON.stringify(resp));
            },
            error: function(error) {
                console.log('error: '+JSON.stringify(error));
            }
        });
        console.log('Model: Got the response back:');
    }
});

<强>路由器

var Router = Backbone.Router.extend({
    routes : {
        "": "home",
        "login" : "login"
    },

    home: function() {
        // your home page
    }

    login: function() {
        var loginModel = new LoginModel();
        var loginView = new LoginView({model: loginModel});
        loginModel.fetch();
    }
})

new Router();
Backbone.history.start();