Question

我有一个系列，从这个系列我选择了一个模型。在这个模型中，我之前已经定义了一个函数。如何调用从集合中选择的模型函数？

我调用模型函数（但未定义）：

 var SingleHomePostView = Backbone.View.extend({

    tagName: "li",


    template: Handlebars.compile(template),


    events: {
        "click #retweet": "retweet",

      },


    initialize: function () {
        // console.log(this.model);
     this.model.bind("change", this.render, this);
     this.model.bind("destroy", this.close, this);
    },

    render: function (eventName) {
      var ad = this.model.toJSON();
      ad.cid = this.model.cid;
      $(this.el).html(this.template(ad));


      return this;
    },



    retweet: function () {//Here----------
            console.log(this.model);// is well defined
        console.log("retweet");
        console.log(this.model.reTweet()); //here I try to call model function
      },




  });

这是模型：

      var Tweet = Backbone.Model.extend({




 reTweet: function(){

     var params = {
                user_id: 11265832,
                //screen_name:"brad"
                page:1,
                count:2,
            };


            cb.__call(
                "statuses_userTimeline",
                params,
                function (reply) {
                //gestire rate limit error 429
                 console.log(reply);
                // return reply;

                }
            );




 }



  });

这是调用先前查看的主视图。它迭代集合并将模型传递给视图。

 loadResults: function (eventName) {

        //this.showSpinner();
        console.log("homepostview"+this.page);

         this.isLoading === true;

            //console.log(this.IntegratedCollection);
            _.each(this.IntegratedCollection.last(this.IntegratedCollection.length).reverse(), function(model){

                 $(this.el).append(new SingleHomePostView({
                     model: model
                   }).render().el);



            },this);

            this.isLoading === false;;


          return this;



    },

Answer 1

好像你的集合应该指定Model类型。 See docs for more info

更新：

From annotated source：

var Model = Backbone.Model = function(attributes, options) {
    var attrs = attributes || {};
    options || (options = {});
    this.cid = _.uniqueId('c');
    this.attributes = {};
    if (options.collection) this.collection = options.collection;
    if (options.parse) attrs = this.parse(attrs, options) || {};
    attrs = _.defaults({}, attrs, _.result(this, 'defaults'));
    this.set(attrs, options);
    this.changed = {};
    this.initialize.apply(this, arguments);
};

要将模型与集合相关联 - 该集合不是由集合通过fetch创建的 - 只需在创建集合时将集合传递给模型（假设this.collection是您的实际集合实例）：

new Model({collection: this.collection})

骨干呼叫模型功能

1 个答案: