[英]AngularJS: How to use the ngRepeat directive together with arrays and subarrays?
Let's assume there is an array of categories. 假设存在一系列类别。 Contained within this array, for each category, there is a variable number of images. 对于每个类别,此数组中包含的图像数量是可变的。 Additionally, each image has a sub-array of paths for varying sizes of each image. 另外,每个图像都有一个路径子数组,用于改变每个图像的大小。 Listed below is an example. 下面列出的是一个示例。
$scope.categories = [
{ "id": 1, "name": "Fashion", "images": [
{ "id": 1, "paths": [
{ "id": 1, "pathThumb":"thumbnail_A.jpg"},
{ "id": 2, "pathFull":"full_size_A.jpg"}
]}
]},
{ "id": 2, "name": "Sunsets", "images": [
{ "id": 1, "paths": [
{ "id": 1, "pathThumb":"thumbnail_B.jpg"}
{ "id": 2, "pathFull":"full_size_B.jpg"}
]},
{ "id": 2, "paths": [
{ "id": 1, "pathThumb":"thumbnail_C.jpg"}
{ "id": 2, "pathFull":"full_size_C.jpg"}
]}
]}
];
I would like to use the AngularJS ngRepeat directive to loop through the above data to produce the following 我想使用AngularJS ngRepeat指令遍历上述数据以产生以下内容
<div class="item fashion">
<a href="full_size_A.jpg"><img src="thumbnail_A.jpg"></a>
</div>
<div class="item sunset">
<a href="full_size_B.jpg"><img src="thumbnail_B.jpg"></a>
</div>
<div class="item sunset">
<a href="full_size_C.jpg"><img src="thumbnail_C.jpg"></a>
</div>
I assume it would look something like the following: 我认为它看起来像以下内容:
<div class="item {{category.name}}" ng-repeat="...">
<a href="{{category.image.path.pathFull}}"><img src="{{category.image.path.pathThumb}}"></a>
</div>
I am not sure how to loop through an array with sub-array and extract the appropriate data. 我不确定如何使用子数组遍历数组并提取适当的数据。 Any help would be greatly appreciated. 任何帮助将不胜感激。
Use like: 使用方式如下:
<div ng-repeat="item in categories">
<div ng-repeat="image in item.images">
<a ng-href="{{image.paths[1].pathFull}}">
<img ng-src="{{image.paths[0].pathThumb}}">
</a>
</div>
</div>
you should use a wrapper container in order to get subarray of categories.. 您应该使用包装容器以获取类别的子数组。
HTML 的HTML
<div ng-repeat="category in categories">
<div class="item {{category.name | lowercase}}" ng-repeat="image in category.images">
<a ng-href="{{image.paths[1].path}}">
<img ng-src="{{image.paths[0].path}}">
</a>
</div>
</div>
here I used dynamic class with ng-class
and using lowercase filter to get lowercase version of name string as class... 这里我将动态类与ng-class
使用,并使用小写过滤器将名称字符串的小写版本作为类...
using ng-src
as src
attribute of img
is important here because sometimes given interpolate ( {{something}}
) cause fail to load resource, because of data is not fecthed... 采用ng-src
的src
属性img
是这里重要的,因为有时给插值( {{something}}
原因无法加载资源,因为数据不fecthed ...
same thing for ng-href... ng-href也是一样...
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