More detailed IIFE chain

gistfile1.js

    $scope.loadFields = function () {
        spService.getListSchema('Parent').then(function (fResult) {
            for (var x = 0; x < fResult.data.d.results.length; x++) {
                var iter = fResult.data.d.results[x];

                if (iter.TypeAsString === "Lookup" && iter.LookupList.indexOf("{") > -1) {
                    iter.LookupList = iter.LookupList.replace("{", "").replace("}", "")
                    $scope.parentLookups.push(iter);
                }
            }

            spService.getParents().then(function (pResult) {
                $scope.parents = pResult.data.d.results;

                for (var pIdx in $scope.parents) {
                    (function (pIdx) {
                        var parent = $scope.parents[pIdx];
                        var fieldReference = [];
                        var promiseChain = [];

                        for (var fIdx in $scope.parentLookups) {
                            var field = $scope.parentLookups[fIdx];
                            promiseChain.push(spService.getListItemById(field.LookupList, parent[field.EntityPropertyName + "Id"]));
                            fieldReference.push(field.Title);
                        }

                        $q.all(promiseChain).then(function (results) {
                            for (var rIdx in results) {
                                var result = results[rIdx].data.d;
                                parent[fieldReference[rIdx]] = result.Title;
                            }
                        })
                    })(pIdx);
                }
            });
        });
    };