gistfile1.txt

    module.filter('cutTree', [

        function() {
            return function(tree) {
                var res = [];
                var i = 0;
                angular.forEach(tree, function(tree1) {
                    var level1 = {};
                    var level2 = [];
                    angular.forEach(tree.children, function(tree2) {
                        var level3 = {};
                        var level4 = [];
                        angular.forEach(tree2.children, function(tree3) {
                            var level5 = {};
                            var level6 = [];
                            
                        })

                        level3.id = tree1.id;
                        level3.sort_order = i;
                        level3.children = level4;
                        i++;
                        level2.push(level3);
                    })

                    level1.id = tree1.id;
                    level1.sort_order = i;
                    level1.children = level2;
                    i++;
                    res.push(level1);
                })
                return res;
            };
        }
    ]);