Angularjs 将多个参数传递给指令 ng-repeat [英] Angularjs pass multiple arguments to directive ng-repeat

问题描述

我有疑问
我有html:
在这里，有两种类型的数据:post 和 person.每个帖子的 json 都有一组人.我希望从指令中检索评级值、dataCategory 和 id (mydata.id/childData.id):

<p class="ng-binding">{{mydata.postdata}}</p><div star-rating rating-value="rating" data-cat="post" data-id="{{mydata.id}}" ></div><div ng-repeat="mydata.personRelatedData 中的childData">{{childData.personName}}<div star-rating rating-value="rating" data-cat="person" data-id="{{childData .id}}" >

我有一个指令:

myDirectives.directive('starRating', function () {返回 {限制:'A'，模板:'
<ul style="margin : 0px">'+'<li ng-repeat="i in getNumber(myNumber)" ng-click="toggle($index)" id=$index readonly="false">'+'</li>'+'</ul></div>',范围: {评级值:'='，数据猫:'='，数据 ID: '=',只读: '@'，onRatingSelected: '&'},链接:函数(范围，元素，属性){scope.myNumber = 5;scope.getNumber = function(num) {返回新数组(数量)；}scope.toggle= 函数(val){console.log("值:"+val);console.log("dataCat :"+scope.dataCat);console.log("dataId : "+scope.dataId);...}

我应该在函数 toggle($index) 中添加什么来传递类别名称及其 ID?目前它显示:

值:1数据猫:未定义数据标识:未定义

我是 angular js 的新手，可以感觉到这里做错了什么..比如如何将范围值传递给切换功能?任何帮助都会很棒..
谢谢

解决方案

试试这个:

HTML

<div 星级 dt-cat="post" dt-id="mydata.id" ></div>

在 dt-id 中，您不应该使用 "{{mydata.id}}"，只需使用 "mydata.id".

JavaScript:

myDirectives.directive('starRating', function() {返回 {限制:'A'，模板:'<div ng-click="toggle()">Test</div>',范围: {dtCat: '@',dtId: '='},链接:功能(范围，元素，属性){scope.toggle = function() {console.log("dtCat:" + scope.dtCat);console.log("dtId : " + scope.dtId);};}};});

我测试了它，我有:

dataCat:post数据标识:5

我假设 dtCat 是字符串，所以你应该使用 dtCat: '@'.

我将 data- 更改为 dt- 因为 angular 从元素/属性的前面剥离数据.

Angular 将元素的标签和属性名称标准化，以确定哪些元素与哪些指令匹配.(...)

规范化过程如下:
1. 从元素/属性的前面去除 x- 和 data-.
2. 将 :、- 或 _ 分隔的名称转换为驼峰式命名法.

更多:创建自定义指令(匹配指令部分)

I am stuck in a doubt
I have html :
Here, there are two types of data : post and person. The json for each post has array of persons. I wish to retrieve the rating Value, dataCategory and id (mydata.id/childData.id) from directive to controller :

<div ng-repeat="mydata in data" class="ng-scope ng-binding">

   <p class="ng-binding">{{mydata.postdata}}</p> 
   <div star-rating rating-value="rating" data-cat="post" data-id="{{mydata.id}}" ></div>

   <div ng-repeat="childData in mydata.personRelatedData">
          {{childData.personName}}  
          <div star-rating rating-value="rating" data-cat="person" data-id="{{childData .id}}" >
   </div>
</div>

I have a Directive :

myDirectives.directive('starRating', function () {
    return {
      restrict: 'A',
      template: '<div> <ul style="margin : 0px">' +
                  '<li ng-repeat="i in getNumber(myNumber)" ng-click="toggle($index)" id=$index readonly="false">' +                   
                  '</li>' +
                '</ul></div>',

      scope: {
        ratingValue: '=',       
        dataCat: '=',  
        dataId: '=',  
        readonly: '@',
        onRatingSelected: '&'       
      },
      link: function (scope, elem, attrs) {       
      scope.myNumber = 5;       
      scope.getNumber = function(num) {
                   return new Array(num);   
        }       

        scope.toggle= function(val) {
               console.log("Val : "+val);
               console.log("dataCat : "+scope.dataCat);
               console.log("dataId : "+scope.dataId);
               ...
        }

What should I add in function toggle($index), to pass category name and its id too? Currently it shows :

Val : 1 
dataCat : undefined 
dataId : undefined 

I am new in angular js and can sense doing something wrong here.. like how to pass scope values to toggle function? Any help would be great..
Thanks

解决方案

Try this:

HTML

<div star-rating dt-cat="post" dt-id="mydata.id" ></div>

In dt-id you shouldn't use "{{mydata.id}}", just use "mydata.id".

JavaScript:

myDirectives.directive('starRating', function() {
  return {
    restrict: 'A',
    template: '<div ng-click="toggle()">Test</div>',
    scope: {
      dtCat: '@',
      dtId: '='
    },
    link: function(scope, elem, attrs) {
      scope.toggle = function() {
        console.log("dtCat: " + scope.dtCat);
        console.log("dtId : " + scope.dtId);
      };
    }
  };
});

I test it and I have:

dataCat: post
dataId : 5

I assumed that dtCat is string so you should use dtCat: '@'.

I changed data- to dt- because angular strip data- from the front of the element/attributes.

Angular normalizes an element's tag and attribute name to determine which elements match which directives. (...)

The normalization process is as follows:
1. Strip x- and data- from the front of the element/attributes.
2. Convert the :, -, or _-delimited name to camelCase.

More: Creating Custom Directives (section Matching Directives)

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