"Struggling with Angular JS filter issues? Here's how to solve

I have a filter that should only return items from an object if their elements exist in a specified array:

$scope.isCategory = function() {
    return function(item) {
        if($scope.filterObj.categories.length > 0) {
            return angular.forEach( $scope.filterObj.categories, function(value, key) {
                return (item.categories.indexOf(value) == -1);
            });
        }
        return item;
    }
};

For example, where $scope.filterObj contains ["a", "b"] and item.categories contains ["a"].

Answer №1

Here is a helpful function:

$scope.checkCategory = function() {
    return function(item) {
        if($scope.filterObj.categories.length > 0) {
            var found = false;
            angular.forEach($scope.filterObj.categories, function(value, key) {
                if (!found && item.categories.indexOf(value) !== -1) {
                    found = true;
                }
            });

            return found ? item : null;
        }
        return item;
    }
};

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