如何找到相应的点击产品型号的标识？ [英] How to find the Id of model corresponding to clicked item?

问题描述

如何知道项目的ID我点击？我的code为如下：

How to know the Id of item I clicked? my code is given below:

$(function() {
  ipl.mvc.view.openings_view = ipl.mvc.view.view_base.extend({
    template: '/assets/t/plmt/companies.tmpl.html',
    ID: '#tmpl_openings',
    events: {
      "click #edit": "editpost"
    },
    initialize: function() {
      var _this = this;
      _.bindAll(this, 'addOne', 'addAll', 'render', 'editpost');
      _this.loadTemplate(_this.template, function() {
        _this.model = new ipl.mvc.model.companies_model([]);
        _this.model.view = _this;
        _this.model.bind('change', _this.render, _this);

      });
    }

    ,
    render: function() {
      var _this = this
      jsonData = _this.model.toJSON();
      _.each(jsonData, function(model) {
        $(_this.ID).tmpl(model).appendTo(_this.el);
        return _this;
      });
    }
    ,
    editpost: function(e) {
      console.log("EDIT CLICKED");
      e.preventDefault();
      var ele = $(e.target);
      console.log(ele);
      _this.model = new ipl.mvc.collection.companies_collection([]);
      var id = _this.model.get("id");
      alert(id);
    }
  });
});

和模板

<a href="!/editpost/${id}" data-id="${id}"><button id="edit"  ><img   src="/assets/img/pencil.png" /></button></a>

我需要在ID编辑功能的使用，但不能从模板获得 $ {ID} ，我遵循这些步骤，我没有得到它？如何获得 $ {ID} 从模板点击项目？

I need id to use in edit function, but not getting ${id} from template, and I follow those steps and I didn't get it? how to get the ${id} of clicked item from template?

推荐答案

其实你需要的是这样的：

actually what you need is this:

1. 您已经设置了html元素上的数据-ID模板

1. you have set the data-id on the html element in the template

您添加要在合适的情况下（ed​​itPost）执行的方法

you added a method to be executed on the right event (editPost)

在editPost方法，你可以这样做：

in that editPost method you can do this:

editPost: function(e){
  e.preventDefault();
  var id = $(e.currentTarget).data("id");
  var item = this.collection.get(id);
}

备注我注意到您的code有太多的关闭标记，这样就不会在这里跑，
而我也在你editPost注意到您尝试_this但你永远不声明_this。
你应该有 VAR _this =本;在方法

remark i noticed your code has too many closing tags, so it won't run here, and i also noticed in your editPost you try _this but you never declare _this. you should have had var _this = this; in that method.

备注2 我不明白为什么你甚至需要在这个实例中的数据-ID，
有渲染视图的方式有两种视图上绑定了一个集合，或者它有一个模式。当绑定集合到一个视图，你可能会以某种方式需要得到正确的ID从元件点击找到您的收藏合适的型号

remark 2 i don't understand why you even need a data-id in this example, there are two ways of rendering a view, either the view has a collection bound to it, or it has a model. When binding a collection to a view, you might somehow need to get the correct id from the element clicked to find the right model in your collection

但你的榜样，您的观点有与之结合的模式，所以你只能有1 ID，您只需通过调用 this.model.get（ID）获得; 我相信你的整个code例如从上面，从他们使用集合视图，因为这两个渲染另一个例子复制和使用数据id属性的说明这一点。

but on your example, your view has a model bound to it, so you only have that 1 ID, which you can just get by calling this.model.get('id'); i believe your entire code example from above, is copied from another example where they use a collection in the view, since both your rendering, and the use of the data-id property suggests this.

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