Auth: Allow inviting existing users when login form is disabled (#19048)

Allow api to accept inviting existing users when login form is disabled.
UI shows invite button when login form is disabled.

pkg/api/org_invite.go

@@ -27,10 +27,6 @@ func GetPendingOrgInvites(c *m.ReqContext) Response {
 }
 
 func AddOrgInvite(c *m.ReqContext, inviteDto dtos.AddInviteForm) Response {
-	if setting.DisableLoginForm {
-		return Error(400, "Cannot invite when login is disabled.", nil)
-	}
-
 	if !inviteDto.Role.IsValid() {
 		return Error(400, "Invalid role specified", nil)
 	}
@@ -45,6 +41,10 @@ func AddOrgInvite(c *m.ReqContext, inviteDto dtos.AddInviteForm) Response {
 		return inviteExistingUserToOrg(c, userQuery.Result, &inviteDto)
 	}
 
+	if setting.DisableLoginForm {
+		return Error(400, "Cannot invite when login is disabled.", nil)
+	}
+
 	cmd := m.CreateTempUserCommand{}
 	cmd.OrgId = c.OrgId
 	cmd.Email = inviteDto.LoginOrEmail

public/app/features/users/state/reducers.ts

@@ -6,7 +6,7 @@ export const initialState: UsersState = {
   invitees: [] as Invitee[],
   users: [] as OrgUser[],
   searchQuery: '',
-  canInvite: !config.disableLoginForm && !config.externalUserMngLinkName,
+  canInvite: !config.externalUserMngLinkName,
   externalUserMngInfo: config.externalUserMngInfo,
   externalUserMngLinkName: config.externalUserMngLinkName,
   externalUserMngLinkUrl: config.externalUserMngLinkUrl,