Question

我在API上构建了一个带有主干的前端，并且想知道为什么change事件不会被触发。提取和保存工作，但模板不会被重新渲染。

集合

var Clients = Backbone.Collection.extend({
  url: API.host + '/clients',
  model: Client
});

模型

var Client = Backbone.Model.extend({
  urlRoot: API.host + '/clients',
  defaults: {
    clients: {
      number: '',
      company: '',
      address1: '',
      address2: '',
      city: '',
      zip: '',
      country: '',
      tax: '',
      email: '',
      phone: ''
    }
  }
});

查看

var ClientsView = Backbone.View.extend({

  id: 'content',

  initialize: function() {

    // instantiate Collection
    this.model = new Clients();

    // compile Handlebars template
    this.tpl = Handlebars.compile(this.template);

    // bind change and reset model events to rerender template
    this.model.bind('change', this.render);
    this.model.bind('reset', this.render);
  },

  render: function() {

    var self = this;
    var obj = this.el;

    // get clients and set data to handlebars template
    $.when(this.model.fetch()).then(function(response) {
      $(obj).html(self.tpl(response));
    }, function() {
      $(obj).html(self.tpl);
    });

    return this;
  },

  events: {
    "click #client-save": "save"
  },

  save: function(e) {

    // cache target and parent object for quick form access
    var obj = e.target;
    var parent = $(obj).closest('#client-modal');

    var client = new Client({
      clients: {
        number: parent.find('[name="number"]').val(),
        company: parent.find('[name="company"]').val(),
        address1: parent.find('[name="address1"]').val(),
        address2: parent.find('[name="address2"]').val(),
        city: parent.find('[name="city"]').val(),
        zip: parent.find('[name="zip"]').val(),
        country: parent.find('[name="country"]').val(),
        tax: parent.find('[name="tax"]').val(),
        email: parent.find('[name="email"]').val(),
        phone: parent.find('[name="phone"]').val(),
        web: parent.find('[name="web"]').val()
      }
    });

    client.save();

    return false;

  }

});

Answer 1

绑定函数时需要传递上下文。

this.model.bind（'change'，this.render， this ）

尝试为集合实例使用其他名称。

// Example
this.collectionClients = new Clients();

\ 0 /

更改模型时不会触发主干集合更改

1 个答案: