[英]How to shorten a long JSON path into a variable in a AngularJS ng-repeat loop?
在ng-repeat
循环中,我多次使用更长的对象属性路径,其中大部分仅最后一段是不同的:
<div id="projects" ng-app="portfolio">
<div id="projectsList" ng-controller="ProjectsListController as projectsList">
<div class="projectItem" ng-repeat="projectItem in projectsList.projectsListData._embedded.projects">
<div class="project-image">
<img
ng-src="{{projectItem._embedded.images[0].src}}"
title="{{projectItem.title}} - {{projectItem._embedded.images[0].title}}"
alt="{{projectItem.title}} - {{projectItem._embedded.images[0].title}}"
/>
</div>
</div>
</div>
</div>
我想使用变量而不是projectItem._embedded.images[0]
(在这种情况下,路径长度可以接受,但有时会变得很长)。 如何使用变量( var myVar = projectItem._embedded.images[0]
)代替对象属性路径?
编辑
只是为了解释一下,我的意思是-在PHP中,我将这样实现:
<div id="projects">
<div id="projectsList">
<?php foreach ($projectsList['projectsListData']['_embedded']['projects'] as $projectItem) :?>
<!-- This intermediate step is missing in the AngularJS loop. -->
<?php $image = $projectItem['_embedded']['images'][0]; ?>
<div class="projectItem">
<div class="project-image">
<img
src="<?php echo $image['src']; ?>"
title="<?php echo $projectItem['title']; ?> - <?php echo $image['title']; ?>"
alt="<?php echo $projectItem['title']; ?> - <?php echo $image['title']; ?>"
/>
</div>
</div>
<?php endforeach; ?>
</div>
</div>
如下例所示,将控制器中的projectsList.projectsListData._embedded.project保存为项目,然后在视图中调用projectsList.project
:
angular
.module('app', [])
.controller('ProjectsListController', ProjectsListController)
function ProjectsListController() {
var vm = this;
vm.project = projectsList.projectsListData._embedded.project;
}
使用ngInit在ngRepeat中为项目的属性添加别名。
<div id="projects" ng-app="portfolio">
<div id="projectsList" ng-controller="ProjectsListController as projectsList">
<div class="projectItem"
ng-repeat="projectItem in projectsList.projectsListData._embedded.project"
ng-init="image=projectItem._embedded.images[0]">
<div class="project-image">
<img
ng-src="{{image.src}}"
title="{{projectItem.title}} - {{image.title}}"
alt="{{projectItem.title}} - {{image.title}}"/>
</div>
</div>
</div>
</div>
这样的事情应该起作用。
这是一个小提琴,上面放了一些示例: http : //jsfiddle.net/7f83hLd9/6/
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