Groups & Users

Site groups and users can be requested via Web's .SiteGroups() and .SiteUsers() queriable collections correspondingly.
Getting users sample
users, err := sp.Web().SiteUsers().
	Select("Email,Id").
	Filter("Email ne ''").
	OrderBy("Id", true).
	Get()
​
if err != nil {
	log.Fatal(err)
}
​
for _, user := range users.Data() {
	fmt.Printf("%d: %s\n", user.Data().ID, user.Data().Email)
}
Getting groups sample
groups, err := sp.Web().SiteGroups().Get()
if err != nil {
	log.Fatal(err)
}
​
for _, group := range groups.Data() {
	fmt.Printf("%d: %s\n", user.Data().ID)
}
Ensuring a user
You can't add new user via SharePoint API, but a user who exists in AD/AAD can be added to a site by ensuring him/her by a logon name.
user, err := sp.Web().EnsureUser("[email protected]")
if err != nil {
	log.Fatal(err)
}
​
fmt.Printf("User: %+v\n", user)
Associated groups
We love the "power of defaults". Each web by default has three predefined groups: Owners, Members and Visitors. But their IDs and names are different from web to web. Luckily there is a helper for getting associated groups.
// .Members() and .Owners() correspondingly
group, err := sp.Web().AssociatedGroups().Visitors().Get()
if err != nil {
	log.Fatal(err)
}
​
fmt.Printf(
  "Visitors group ID %d, Title \"%s\"\n",
  group.Data().ID,
  group.Data().Title,
)
Creating groups
group, err := sp.Web().SiteGroups().Add("My group", nil)
if err != nil {
	log.Fatal(err)
}
​
fmt.Printf("New group ID: %d\n", group.Data().ID)
Deleting groups
// or .RemoveByID(groupID)
if err := sp.Web().SiteGroups().RemoveByLoginName("My group"); err != nil {
	log.Fatal(err)
}
Adding user to a group
user, err := sp.Web().EnsureUser("[email protected]")
if err != nil {
	log.Fatal(err)
}
​
fmt.Printf("User login: %s\n", user.LoginName)
// User login: i:0#.f|membership|[email protected]
​
visitorGroup := sp.Web().AssociatedGroups().Visitors()
if err := visitorGroup.AddUser(user.LoginName); err != nil {
	log.Fatal(err)
}
In group's .AddUser method the argument should be full and valid login name including  security provider membership prefix. For instance, while you can ensure Jane using [email protected] the same as an .AddUser method will fail as Jane's login is actually different i:0#.f|membership|[email protected].
If you already know UserID but not sure about LoginName .AddUserByID helper is at the disposal.
Removing users from a group
Similarly as with adding users:
user, err := sp.Web().EnsureUser("[email protected]")
if err != nil {
	log.Fatal(err)
}
​
memberGroup := sp.Web().AssociatedGroups().Members()
if err := memberGroup.RemoveUser(user.LoginName); err != nil {
	log.Fatal(err)
}
​
// or
​
if err := memberGroup.RemoveUserByID(user.ID); err != nil {
	log.Fatal(err)
}
Managing group owner
memberGroup := sp.Web().AssociatedGroups().Members()
if err := memberGroup.SetAsOwner(user.ID); err != nil {
	log.Fatal(err)
}
Getting group's users
users, err := sp.Web().AssociatedGroups().Visitors().
	Users().Select("Id,Title").Get()
​
if err != nil {
	log.Fatal(err)
}
​
for _, user := range users.Data() {
	fmt.Printf("%d: %s\n", user.Data().ID, user.Data().Title)
}
Summary
That's it, most of the common actions with groups and users are covered.
You'd probably will be interested with the connected topics:
Permissions
Search API
User Profiles

Samples - Previous

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Next - Samples

Search API

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On this page

Getting users sample

Getting groups sample

Ensuring a user

Associated groups

Creating groups

Deleting groups

Adding user to a group

Removing users from a group

Managing group owner

Getting group's users

Summary