@startuml
actor User as u
boundary View as v
control Controller as c
entity Model as m

u->v: Request Friends Page
v->c: Get /Friends
c->m: getFriends(userId)
alt successful retrieval
    m-->c: friendsList: User[]
else retrieval failed
    m-->c: error
end
c-->v: renderView(friendsList)
v-->u: Display Friends

u->v: clickDeleteFriend(idUser)
v->c: Post: deleteFriend(idUser)
c->m: deleteFriend(idUser)
alt successful deletion
    m-->c: updatedFriendsList: User[]
else deletion failed
    m-->c: error
end
c-->v: renderView(updatedFriendsList)
v-->u: Display Updated Friends
@enduml