create ajax method to get user pref

Edit /index.php and add the following somewhere after the header user_preference_allow_ajax_fetch('invalid1'); user_preference_allow_ajax_update('invalid2', PARAM_INT); user_preference_allow_ajax_fetch('auth_manual_passwordupdatetime'); user_preference_allow_ajax_update('filepicker_recentlicense'); Navigate to /index.php and ensure that you are currently logged out Open the JS console and run to set things up: resolve = function() {console.log("Was resolved succesfully. Arguments follow"); console.log(arguments);}; reject = function() {console.log("Was rejected. Arguments follow"); console.log(arguments);}; Now attempt to fetch some settings: An invalid setting which has been listed: M.util.get_user_preference('invalid1', resolve, reject); Confirm the output includes "Was resolved successfully" Confirm the output includes an object with name "invalid1", and an empty value An invalid setting which has not been listed. Setting it for update should not set it for retrieval: M.util.get_user_preference('invalid2', resolve, reject); Confirm that an AJAX exception dialogue was shown Confirm the output includes "Was rejected" Confirm the output includes a reference to the AJAXEXCEPTION A valid setting which is allowed M.util.get_user_preference('auth_manual_passwordupdatetime', resolve, reject); Confirm the output includes "Was resolved successfully" Confirm the output includes an object with name "auth_manual_passwordupdatetime", and a value for the preference An valid setting which has not been listed. Setting it for update should not set it for retrieval: M.util.get_user_preference('filepicker_recentlicense', resolve, reject); Confirm that an AJAX exception dialogue was shown Confirm the output includes "Was rejected" Confirm the output includes a reference to the AJAXEXCEPTION