Angular checkbox filtering data list

Question

Seen a few options for filtering data via checkboxes but it all seems fairly overly complicated for something I\'d expect Angular to do easily.

Take a nose at http://pln

Answer 1

Just for the fun of it, I implemented a solution that has a much simpler API (wish of Leads in comments). Here it goes:

Add the cbFilter dependency to the controller, remove all the checkbox-related code and replace it as follows; this is the new API (it can't get any simpler :)

app.controller('resultsData', function($scope, $http, cbFilter){
    ...
    $scope.checkbox = cbFilter($scope, "provider.providerId");
    ...
}

Rreplace the filter in the list (notice searchByCheckbox is replaced by checkbox):

And, finally, add the service:

app.factory("cbFilter", ["$parse", function($parse) {
    return function($scope, matchExpression) {
        var showAll = true,
            getter = $parse(matchExpression),
            filter = function(data) {
                if( showAll ) return true;
                return filter[getter(data)] === true;
            },
            unwatch = $scope.$watch(
                function() {
                    var x, ret = {};
                    for( x in filter ) {
                        if( !filter.hasOwnProperty(x) ) continue;
                        ret[x] = filter[x];
                    }
                    return ret;
                },
                function() {
                    showAll = true;
                    angular.forEach(filter, function(val) {
                        if( val === true ) showAll = false;
                    });
                },
                true
            );

        $scope.$on("$destroy", unwatch);

        return filter;
    };
}]);

The implementation is much more complex than before, and probably slower. However the API is much simpler (one-liner).