Handle open/collapse events of Accordion in Angular

Question

If I have this code:

      {{group.content}}

         


        

Answer 1

Here's a solution inspired by kjv's answer, which easily tracks which accordion element is open. I found difficult getting ng-click to work on the accordion heading, though surrounding the element in a tag and adding the ng-click to that worked fine.

Another problem I encountered was, although the accordion elements were added to the page programmatically, the content was not. When I tried loading the content using Angular directives(ie. {{path}}) linked to a $scope variable I would be hit with undefined, hence the use of the bellow method which populates the accordion content using the ID div embedded within.

Controller:

    //initialise the open state to false
    $scope.routeDescriptors[index].openState == false

    function opened(index) 
    {
        //we need to track what state the accordion is in
        if ($scope.routeDescriptors[index].openState == true){   //close an accordion
            $scope.routeDescriptors[index].openState == false
        } else {    //open an accordion
            //if the user clicks on another accordion element
            //then the open element will be closed, so this will handle it
            if (typeof $scope.previousAccordionIndex !== 'undefined') {
                $scope.routeDescriptors[$scope.previousAccordionIndex].openState = false;
            }
            $scope.previousAccordionIndex = index;
            $scope.routeDescriptors[index].openState = true;
    }

    function populateDiv(id)
    {
        for (var x = 0; x < $scope.routeDescriptors.length; x++)
        {
            $("#_x" + x).html($scope.routeDescriptors[x]);
        }
    }

HTML:

        

            
                
                    
                        route {{$index}}