public ActionResult QuitMembership(UserGroup userGroup, UserGroupMembership userGroupMembership, User currentUser)
{
Require.NotNull(userGroup, "userGroup");
Require.NotNull(userGroupMembership, "userGroupMembership");
Require.IsTrue(() => userGroupMembership.UserGroup.Equals(userGroup), "userGroupMembership");
Require.IsFalse(() => userGroupMembership.MembershipType == UserGroupMembershipType.Quit, "userGroupMembership");
if (!ModelState.IsValid)
{
return(QuitMembershipForm(userGroup, userGroupMembership, currentUser));
}
UserGroupService.QuitOrRemoveMemberships(new[] { userGroupMembership }, currentUser);
return(RedirectToAction("AllMemberships", "UserGroup"));
}