将数据传递到AngularJS中的自定义指令 [英] Passing data to a custom directive in AngularJS

问题描述

我有一个页面，显示一堆使用http检索的图像的缩略图.我使用ng-repeat遍历数组并生成html.
效果很好.

I have a page that displays a bunch of thumbnails of images that are retrieved using http. I use ng-repeat to go through the array and generate the html.
This works fine.

我还创建了一个自定义指令，将其作为属性绑定到ng-repeat生成的img元素.
这也很好.

I also create a custom directive that I tie as an attribute to img elements generated by ng-repeat.
This also works fine.

但是，当我尝试将数据传递到自定义指令的范围时，一切都会崩溃.数据绑定失败，ng-repeat不会替换图像的url，所以由于该URL无效，我最终得到了404.尽其所能.

However, when I try to pass data to the scope of my custom directive then it all falls apart. Data binding fails, ng-repeat does not replace the url of the images so I end up getting a 404 since the url is invalid. That is pretty much as far as it goes.

由于我是Angular的新手，因此非常感谢任何帮助.

Any help is greatly appreciated since I am completely new to Angular.

我的html模板:

<div class="portfolioContent">
<div class="row">
    <div class="col-lg-3 col-md-4 col-sm-4 col-xs-6 col-padding" ng-repeat="gImg in gPhotos">
        <div class="photoframe">
                <img src="{{gImg.thumbnailUrl}}" url="{{gImg.imageUrl}}" image-gallery>
        </div>
    </div>

和我的自定义指令:

myApp.directive('imageGallery',function(){

return {
    restrict: 'A',
    scope: {
      url: '='
    },
    controller: function($scope){
        console.log($scope.url);
    }
}

});

推荐答案

尝试更改

scope: {
  url: '='
},

到

scope: {
  url: '@'
},

有关非常简单的示例，请参见此处.检查控制台.请参见此处有什么区别在=和@之间.

See here for a very simple example. Check the console. See here what the difference is between = and @.

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