问题描述
如何知道我点击的项目的 ID?我的代码如下:
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 id 才能在编辑功能中使用,但没有从模板中获取 ${id}
,我按照这些步骤操作却没有得到?如何从模板中获取点击项目的${id}
?
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
实际上你需要的是:
您已经在模板中的 html 元素上设置了 data-id
you have set the data-id on the html element in the template
您添加了要在正确事件 (editPost) 上执行的方法
you added a method to be executed on the right event (editPost)
在那个 editPost 方法中,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 我注意到你的代码有太多的结束标签,所以它不会在这里运行,我还注意到在您的 editPost 中您尝试了 _this,但您从未声明过 _this.你应该在那个方法中有 var _this = this;
.
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 我不明白为什么在这个例子中你甚至需要一个数据 ID,有两种渲染视图的方法,视图绑定了一个集合,或者它有一个模型.将集合绑定到视图时,您可能需要从单击的元素中获取正确的 id 以在集合中找到正确的模型
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
但在您的示例中,您的视图绑定了一个模型,因此您只有 1 个 ID,您只需调用 this.model.get('id');
我相信您上面的整个代码示例是从另一个示例中复制的,其中他们在视图中使用了一个集合,因为您的渲染和 data-id 属性的使用都表明了这一点.
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.
这篇关于如何找到被点击的item对应的model的Id?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!