javascript - $q is not defined in function -

created factory 'resinterceptor' , in using functions(requestinterceptor,responseinterceptor) defined outside of factory. , giving error '$q not defined' inside function. want way only. please suggest how access $q inside requestinterceptor , responseinterceptor.

angular.module('resmodule', ['ngresource', 'ngcookies'])  .factory('resinterceptor', ['$rootscope', '$q', '$location', resinterceptor]);   function resinterceptor($rootscope, $q, $location) {     return {         request: requestinterceptor,         response: responseinterceptor,     }; }  function requestinterceptor(config) {    return config || $q.when(config); //$q not defined }  function responseinterceptor(response) {    return response || $q.when(response); } 

in order work, need pass $q along explicitly , make requestinterceptor return actual callback function:

function resinterceptor($rootscope, $q, $location) {   return {     request: requestinterceptor($q),     ..   }; }  function requestinterceptor($q) {   return function (config) {     return config || $q.when(config);   }; } 

of course, less complicated if inlined functions same scope $q defined in first place.