snow guru cheat gliderecord

The GlideSystem (gs) user object is designed to be used in any server-side JavaScript (Business rules, UI Actions, System security, etc.). The following table shows how to use this object and its corresponding functions and methods.
Function/Method	Return Value	Usage
gs.getUser()	Returns a reference to the user object for the currently logged-in user.	var userObject = gs.getUser();
gs.getUserByID()	Returns a reference to the user object for the user ID (or sys_id) provided.	var userObject = gs.getUser().getUserByID('employee');
gs.getUserName()	Returns the User ID (user_name) for the currently logged-in user.
e.g. 'employee'	var user_name = gs.getUserName();
gs.getUserDisplayName()	Returns the display value for the currently logged-in user.
e.g. 'Joe Employee'	var userDisplay = gs.getUserDisplayName();
gs.getUserID()	Returns the sys_id string value for the currently logged-in user.	var userID = gs.getUserID();
getFirstName()	Returns the first name of the currently logged-in user.	var firstName = gs.getUser().getFirstName();
getLastName()	Returns the last name of the currently logged-in user.	var lastName = gs.getUser().getLastName();
getEmail()	Returns the email address of the currently logged-in user.	var email = gs.getUser().getEmail();
getDepartmentID()	Returns the department sys_id of the currently logged-in user.	var deptID = gs.getUser().getDepartmentID();
getCompanyID()	Returns the company sys_id of the currently logged-in user.	var companyID = gs.getUser().getCompanyID();
getCompanyRecord()	Returns the company GlideRecord of the currently logged-in user.	var company = gs.getUser().getCompanyRecord();
getLanguage()	Returns the language of the currently logged-in user.	var language = gs.getUser().getLanguage();
getLocation()	Returns the location of the currently logged-in user.	var location = gs.getUser().getLocation();
getDomainID()	Returns the domain sys_id of the currently logged-in user (only used for instances using domain separation).	var domainID = gs.getUser().getDomainID();
getDomainDisplayValue()	Returns the domain display value of the currently logged-in user (only used for instances using domain separation).	var domainName = gs.getUser().getDomainDisplayValue();
getManagerID()	Returns the manager sys_id of the currently logged-in user.	var managerID = gs.getUser().getManagerID();
getMyGroups()	Returns a list of all groups that the currently logged-in user is a member of.	var groups = gs.getUser().getMyGroups();
isMemberOf()	Returns true if the user is a member of the given group, false otherwise.	Takes either a group sys_id or a group name as an argument.

if(gs.getUser().isMemberOf(current.assignment_group)){
//Do something...
}

var isMember = gs.getUser().isMemberOf('Hardware');

To do this for a user that isn't the currently logged-in user...

var user = 'admin';
var group = "Hardware";
if (gs.getUser().getUserByID(user).isMemberOf(group)){
gs.log( gr.user_name + " is a member of " + group);
}

else{
gs.log( gr.user_name + " is NOT a member of " + group);
}
gs.hasRole()	Returns true if the user has the given role, false otherwise.	if(gs.hasRole('itil')){ //Do something... }
gs.hasRole()	Returns true if the user has one of the given roles, false otherwise.	if(gs.hasRole('itil,admin')){
//If user has 'itil' OR 'admin' role then Do something...
}
hasRoles()	Returns true if the user has any roles at all, false if the user has no role (i.e. an ess user).	if(!gs.getUser().hasRoles()){
//User is an ess user...
}

It is also very simple to get user information even if the attribute you want to retrieve is not listed above by using a gs.getUser().getRecord() call as shown here&
//This script gets the user's title
gs.getUser().getRecord().getValue('title');

g_user User Object

The g_user object can be used only in UI policies and Client scripts. Contrary to its naming, it is not truly a user object. g_user is actually just a handful of cached user properties that are accessible to client-side JavaScript. This eliminates the need for most GlideRecord queries from the client to get user information (which can incur a fairly significant performance hit if not used judiciously).
g_user Property or Method	Return value
g_user.userName	User name of the current user e.g. employee
g_user.firstName	First name of the current user e.g. Joe
g_user.lastName	Last name of the current user e.g. Employee
g_user.userID	sys_id of the current user e.g. 681ccaf9c0a8016400b98a06818d57c7
g_user.hasRole()	True if the current user has the role specified, false otherwise. ALWAYS returns true if the user has the 'admin' role.

Usage: g_user.hasRole('itil')
g_user.hasRoleExactly()	True if the current user has the exact role specified, false otherwise, regardless of 'admin' role.

Usage: g_user.hasRoleExactly('itil')
g_user.hasRoles()	True if the current user has at least one role specified, false otherwise.

Usage: g_user.hasRoles('itil','admin')

It is often necessary to determine if a user is a member of a given group from the client as well. Although there is no convenience method for determining this from the client, you can get the information by performing a GlideRecord query. Heres an example&
//Check to see if assigned to is a member of selected group
var grpName = 'YOURGROUPNAMEHERE';
var usrID = g_form.userID; //Get current user ID
var grp = new GlideRecord('sys_user_grmember');
grp.addQuery('group.name', grpName);
grp.addQuery('user', usrID);
grp.query(groupMemberCallback);

function groupMemberCallback(grp){
//If user is a member of selected group
if(grp.next()){
//Do something
alert('Is a member');
}
else{
alert('Is not a member');
}
}

To get any additional information about the currently logged-in user from a client-script or UI policy, you need to use a GlideRecord query. If at all possible, you should use a server-side technique described above since GlideRecord queries can have performance implications when initiated from a client script. For the situations where theres no way around it, you could use a script similar to the one shown below to query from the client for more information about the currently logged in user.
//This script gets the user's title
var gr = new GlideRecord('sys_user');
gr.get(g_user.userID);
var title = gr.title;
alert(title);

Useful Scripts

There are quite a few documented examples of some common uses of these script methods. These scripts can be found on the ServiceNow wiki.