Angular: Experiencing difficulty in locating the position of an element within an array

I am facing an issue with the structure of my controller. Here is how it currently looks:

MyControllers.controller('ContentCtrl', ['$scope', '$http', '$routeParams', function($scope, $http, $routeParams) {

    $http.get('js/data.json').success(function(data){
        $scope.meta = data;
        $scope.whichItem = $routeParams.itemName;

        console.log($scope.whichItem);
    }).error(function() {
        alert('Unable to retrieve information :-(');
    });

    $scope.title1 = [{"title":"Redhat Theme Guide"}];
    $scope.title2 = [{"title":"Debian Theme Guide"}];
}]);

There is also a JSON array included in the code:

[
  {
    "category":"category1",
    "link":"category1",
    "expand":false,
    "keyword":"category1, category1 online, category1 something"
  },
  {
    "category":"category2",
    "link":"category2",
    "expand":false,
    "keyword":"category2, category2 online, category2 something"
  }
]

The problem arises when trying to access data from the array using {{meta[whichItem].keyword}}. The issue lies in the fact that the whichItem variable is always interpreted as a string rather than an integer, which is necessary for accessing the array index properly. I attempted to use parseInt() along with slice(), but so far have not been successful in resolving this issue.

Answer №1

In my view, the most efficient approach would be to create a basic function that retrieves an item from an array by searching for the specified category. I frequently use lo-dash because of its usefulness, so here's an example utilizing this library.

JavaScript:

$scope.getDataByCategory = function(categoryId){
  return _.find($scope.dataArray, {category: categoryId});
};

HTML:

{{getDataByCategory(selectedItem).keyword}}

You could achieve this with a traditional for loop as well, but it would require more lines of code.

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