Create a new variable within a function using an Angular factory

I am working with an Angular factory that generates a function including a variable to select an array for a dropdown. While I have successfully set the variable from a user selection in a controller, I am facing difficulties getting this variable into the function at the controller.

The factory contains multiple arrays and a switch() function for selection based on input. The factory returns a function as shown in the following code snippet where ddSelections is one of the arrays:

languageFactories.factory('changePostDdFactory', ['$translate', function (translate) {
    return {
        withLangChoice: function (langKey) {
            //variables containing arrays and switch() logic
            return ddSelections;
        }
    }
}]);

The HTML code for the button dropdown responsible for displaying the selected array is as follows:

<div id="postBox" class="floatingSection" data-ng-controller="postButtonController2">
  <button id="postButton" dropdown-menu="ddMenuOptions" dropdown-model="ddMenuSelected" class="btn-menu">{{ 'POST' | translate }}</button>
</div>

I am struggling with the controller for the button dropdown directive. While hardcoding some values works, it does not align with good Angular practices. When using variables, I encounter various issues. It seems like utilizing $scope may be the way to go, but there are uncertainties surrounding it. The function $scope.getCurrentLanguage appears to be causing problems. Here is the relevant part of the code:

residenceApp.controller('postButtonController2', ['$translate', '$scope', 'changePostDdFactory',

function ($translate, $scope, ddSelections) {
    //$scope.getCurrentLanguage = 'en'; 
    //$scope.ddMenuOptions = ddSelections.withLangChoice($scope.getCurrentLanguage); 

    $scope.getCurrentLanguage = function ($translate) {
        alert('here I am'); //does not work
        $translate.use(); 
        return $translate.use();
    };
    $scope.ddMenuOptions = ddSelections.withLangChoice($scope.getCurrentLanguage); 

    $scope.ddMenuSelected = {};
    $scope.$watch('ddMenuSelected', function (newVal) {
        //do something when watch() triggers
    }, true);

Answer №1

Perhaps you should consider invoking your function?

$scope.ddMenuOptions = ddSelections.withLangChoice($scope.getCurrentLanguage($translate));

as opposed to
$scope.ddMenuOptions = ddSelections.withLangChoice($scope.getCurrentLanguage);

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