Access index of the parent ng-repeat from child ng-repeat

javascript angularjs angularjs-ng-repeat

2022-08-30 01:01:29

I want to use the index of the parent list (foos) as an argument to a function call in the child list (foos.bars).

I found a post where someone recommends using $parent.$index, but is not a property of .$index$parent

How can I access the index of the parent ?ng-repeat

<div ng-repeat="f in foos">
  <div>
    <div ng-repeat="b in foos.bars">
      <a ng-click="addSomething($parent.$index)">Add Something</a>
    </div>
  </div>
</div>

答案 1

My example code was correct and the issue was something else in my actual code. Still, I know it was difficult to find examples of this so I'm answering it in case someone else is looking.

<div ng-repeat="f in foos">
  <div>
    <div ng-repeat="b in foos.bars">
      <a ng-click="addSomething($parent.$index)">Add Something</a>
    </div>
  </div>
</div>

答案 2

According to ng-repeat docs http://docs.angularjs.org/api/ng.directive:ngRepeat, you can store the key or array index in the variable of your choice. (indexVar, valueVar) in values

so you can write

<div ng-repeat="(fIndex, f) in foos">
  <div>
    <div ng-repeat="b in foos.bars">
      <a ng-click="addSomething(fIndex)">Add Something</a>
    </div>
  </div>
</div>

One level up is still quite clean with $parent.$index but several parents up, things can get messy.

Note: will continue to be defined at each scope, it is not replaced by .$indexfIndex