[英]Is there a way to pass data from `ng-repeat` to other element conditionally?
我遍歷一個數組,條件是我找到一個值。 但是,如何將該條件值傳遞給另一個元素?
范例:
<h1>{{title}}</h1> //how to get here?
<ul class="naviPrCatgInfo">
<li ng-repeat='subProject in viewProject.SubProjectIds' ng-class="{'selected' : subProject.Id === subProjectId;}" > //how to pass?
<a ng-class="subProject.Name | trimSpace" ng-href="" ng-click='changeSubProCat(subProject)'>
{{subProject.Name}} {{subProject.Id}}
</a>
</li>
</ul>
不要在ng-repeat
聲明新變量,因為它將被添加到ng-repeat
創建的子范圍內。
您需要將subProjectId
保留在ng-repeat
范圍之外,以便可以在控制器內部使用,您需要使用$parent
注釋將該變量放置在控制器范圍內,而不是ng-repeat
。
因此,您可以基於subProjectId
輕松過濾viewProject.SubProjectIds
並在subProjectId
顯示title元素。
標記
<h1>{{(viewProject.SubProjectIds| filter: {Id: subProjectId}: true)[0].Name}}</h1>
<ul class="naviPrCatgInfo">
<li ng-repeat='subProject in viewProject.SubProjectIds' ng-click="$parent.subProjectId = subProject.Id"
ng-class="{'selected' : subProject.Id === subProjectId}">
<a ng-class="subProject.Name | trimSpace" ng-href="" ng-click='changeSubProCat(subProject)'>
{{subProject.Name}} {{subProject.Id}}
</a>
</li>
</ul>
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