def add_ocena(ucenik, predmet, vrednost_ocene):
check_type(ucenik, Ucenik)
check_type(predmet, Predmet)
if not isinstance(vrednost_ocene,
int) or vrednost_ocene < 1 or vrednost_ocene > 5:
raise ValueError('vrednost_ocene is out of predefined domain')
daos = {'korisnik': None, 'predmet': None}
try:
with session_scope() as session:
daos['korisnik'] = DAOManager.get_korisnik_dao(session)
daos['predmet'] = DAOManager.get_predmet_dao(session)
slusa = daos['korisnik'].get_uceniks_predmets_slusa(
ucenik, predmet)
if slusa is None:
raise UpdateInfoError('Ucenik ne slusa uneti predmet')
ocena = Ocena(vrednost_ocene, slusa)
daos['predmet'].add_ocena(ocena)
return True
except UpdateInfoError:
raise
except:
return False
finally:
for dao in daos.values():
DAOManager.release(dao)
def __get_korisnik_by_pk(korisnik_dao_call, primary_key): dao = None try: with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) return korisnik_dao_call(dao, primary_key) except: return None finally: DAOManager.release(dao)
def get_uceniks_slusa(ucenik): dao = None try: with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) return dao.get_uceniks_slusa(ucenik) except: return None finally: DAOManager.release(dao)
def add_predmet(naziv):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
dao.add_predmet(Predmet(naziv))
return True
except:
return False
finally:
DAOManager.release(dao)
def get_profesors_predmets_slusa(predmet, profesor): dao = None try: with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) slusas = dao.get_profesors_predmets_slusa(predmet, profesor) return slusas except: return None finally: DAOManager.release(dao)
def get_slusa_by_pk(ucenik_id, predmet_id): dao = None try: with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) slusa = dao.get_slusa_by_pk(ucenik_id, predmet_id) return slusa except: return None finally: DAOManager.release(dao)
def get_predmet_by_naziv(naziv):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
predmet = dao.get_predmet_by_name(naziv)
return predmet
except:
return None
finally:
DAOManager.release(dao)
def get_razred_by_godina(godina): dao = None try: with session_scope() as session: dao = DAOManager.get_razred_dao(session) return dao.get_razred_by_godina(godina) except: return None finally: if dao is not None: DAOManager.release(dao)
def delete_latest_ocena(slusa):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
dao.delete_latest_ocena(slusa)
return True
except:
return False
finally:
DAOManager.release(dao)
def get_predmet_by_pk(primary_key):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
predmet = dao.get_predmet_by_pk(primary_key)
predmet.razredi.sort(key=lambda razred: razred.godina)
return predmet
except:
return None
finally:
DAOManager.release(dao)
def get_profesors_predmets(profesor):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
predmeti = dao.get_all_predmet_connected_with_the_profesor(
profesor)
return {predmet.id: predmet for predmet in predmeti}
except:
return None
finally:
DAOManager.release(dao)
def add_razred(godina): dao = None try: with session_scope() as session: dao = DAOManager.get_razred_dao(session) dao.add_razred(Razred(godina)) return True except: return False finally: if dao is not None: DAOManager.release(dao)
def change_password(korisnik, new_password): new_password = new_password.strip() dao = None try: KorisnikLogic.validate_password(new_password) with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) dao.update_korisnik_attribute(korisnik, 'password', new_password) return True except: return False finally: DAOManager.release(dao)
def __get_all_korisnik(korisnik_dao_call):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_korisnik_dao(session)
korisnici = korisnik_dao_call(dao)
if korisnici is None:
return None
else:
return { korisnik.id: korisnik for korisnik in korisnici }
except:
return None
finally:
DAOManager.release(dao)
def change_prezime(korisnik, prezime):
prezime = prezime.strip()
dao = None
try:
KorisnikLogic.validate_name('prezime', prezime)
with session_scope() as session:
dao = DAOManager.get_korisnik_dao(session)
dao.update_korisnik_attribute(korisnik, 'prezime', prezime)
return True
except InvalidKorisnikInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def get_korisnik_by_username(username): dao = None try: with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) korisnik = dao.get_korisnik_by_username(username) if korisnik is not None: session.refresh(korisnik) return korisnik else: return None except: return None finally: DAOManager.release(dao)
def add_profesor_predmet_relation(profesor, predmet):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_korisnik_dao(session)
if predmet in profesor.predmeti:
raise UpdateInfoError('Profesor vec predaje uneti predmet')
dao.add_predmet_to_profesor(profesor, predmet)
return True
except UpdateInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def get_all_razred():
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_razred_dao(session)
razredi = dao.get_all_razred()
if razredi is None:
return None
else:
return { razred.id: razred for razred in razredi}
except:
return None
finally:
if dao is not None:
DAOManager.release(dao)
def get_all_predmet():
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
predmeti = dao.get_all_predmet()
if predmeti is None:
return None
else:
for predmet in predmeti:
predmet.razredi.sort(key=lambda razred: razred.godina)
return {predmet.id: predmet for predmet in predmeti}
except:
return None
finally:
DAOManager.release(dao)
def change_predmet_naziv(predmet, naziv):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
if dao.get_predmet_by_name(naziv) is not None:
raise UpdateInfoError(
'Vec postoji predmet sa unetim imenom')
dao.update_predmet_attribute(predmet, 'naziv', naziv)
return True
except UpdateInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def register_user(**params):
korisnik = None
try:
uloga = params['uloga'].strip().lower()
username = params['username'].strip()
KorisnikLogic.validate_username(username)
password = params['password'].strip()
KorisnikLogic.validate_password(password)
password = bcrypt.hashpw(password.encode(), bcrypt.gensalt())
if uloga in ['admin', 'administrator']:
korisnik = Admin(username, password)
else:
assert uloga in ['ucenik', 'profesor']
ime = params['ime'].strip()
prezime = params['prezime'].strip()
KorisnikLogic.validate_name('ime', ime)
KorisnikLogic.validate_name('prezime', prezime)
if uloga == 'profesor':
korisnik = Profesor(username, password, ime, prezime)
else:
godina = params['razred']
if not isinstance(godina, int):
raise InvalidKorisnikInfoError('Razred mora biti ceo broj')
razred = RazredLogic.get_razred_by_godina(godina)
if razred is None:
raise InvalidKorisnikInfoError('Uneti razred ne postoji')
korisnik = Ucenik(username, password, ime, prezime, razred)
except InvalidKorisnikInfoError:
raise
except:
debug_print('Insufficient params passed to register_user\n', traceback.format_exc())
return False
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_korisnik_dao(session)
if dao.get_korisnik_by_username(korisnik.username) is not None:
raise InvalidKorisnikInfoError('Vec postoji korisnik sa datim username-om')
dao.add_korisnik(korisnik)
return True
except InvalidKorisnikInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def change_username(korisnik, new_username):
new_username = new_username.strip()
dao = None
try:
KorisnikLogic.validate_username(new_username)
with session_scope() as session:
dao = DAOManager.get_korisnik_dao(session)
if dao.get_korisnik_by_username(new_username) is not None:
raise InvalidKorisnikInfoError('Vec postoji korisnik sa datim username-om')
dao.update_korisnik_attribute(korisnik, 'username', new_username)
return True
except InvalidKorisnikInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def add_slusa(ucenik, predmet, profesor):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_korisnik_dao(session)
if profesor not in predmet.profesori:
raise UpdateInfoError('Profesor ne predaje uneti predmet')
if dao.does_slusa_exists(ucenik, predmet):
raise UpdateInfoError('Ucenik vec slusa dati predmet')
dao.add_predmet_to_ucenik(ucenik, predmet, profesor)
return True
except UpdateInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def get_korisnik_by_pk(primary_key): # Ispostavilo se da fali session.refresh da bi radilo sa ostalim podklasama od korisnika (sto sam shvatio tek pri kraju pisanja programa) # ali posto se njihove pojedinacne metode vec koriste u velikom delu programa ostavicu tako da ne bih napravio slucajno neki bug dao = None try: with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) korisnik = dao.get_korisnik_by_pk(primary_key) if korisnik is not None: session.refresh(korisnik) return korisnik else: return None except: return None finally: DAOManager.release(dao)
def get_predmets_avaliable_to_ucenik(ucenik):
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
predmeti = dao.get_predmets_avaliable_to_ucenik(ucenik)
if predmeti is None:
return None
predmeti = list(
filter(lambda predmet: len(predmet.profesori) > 0,
predmeti))
return predmeti
except UpdateInfoError:
raise
except:
return None
finally:
DAOManager.release(dao)
def add_ocena_with_slusa(slusa, vrednost_ocene):
check_type(slusa, Slusa)
if not isinstance(vrednost_ocene,
int) or vrednost_ocene < 1 or vrednost_ocene > 5:
raise ValueError('vrednost_ocene is out of predefined domain')
dao = None
try:
with session_scope() as session:
dao = DAOManager.get_predmet_dao(session)
ocena = Ocena(vrednost_ocene, slusa)
dao.add_ocena(ocena)
return True
except UpdateInfoError:
raise
except:
return False
finally:
DAOManager.release(dao)
def authenticate_user(username, password): dao = None try: username = username.strip() password = password.strip() with session_scope() as session: dao = DAOManager.get_korisnik_dao(session) user = dao.get_korisnik_by_username(username) if user is None: return None if KorisnikLogic.do_passwords_match(user, password): session.refresh(user) return user else: return None except: return None finally: DAOManager.release(dao)
def add_predmet_razred_relation(predmet, godina):
daos = {'predmet': None, 'razred': None}
try:
with session_scope() as session:
daos['predmet'] = DAOManager.get_predmet_dao(session)
daos['razred'] = DAOManager.get_razred_dao(session)
razred = daos['razred'].get_razred_by_godina(godina)
if razred in predmet.razredi:
raise UpdateInfoError(
'Predmet se vec slusa u unetom razredu')
daos['predmet'].add_razred_to_predmet(predmet, razred)
return True
except UpdateInfoError:
raise
except:
return False
finally:
for dao in daos.values():
DAOManager.release(dao)
def get_all_ucenik_from_godina(godina):
razred = None
if isinstance(godina, Razred):
razred = godina
elif not isinstance(godina, int):
return None
daos = {'razred': None, 'korisnik': None}
try:
with session_scope() as session:
daos['razred'] = DAOManager.get_razred_dao(session)
daos['korisnik'] = DAOManager.get_korisnik_dao(session)
if razred is None:
razred = daos['razred'].get_razred_by_godina(godina)
return daos['korisnik'].get_all_ucenik_from_razred(razred)
except:
return None
finally:
for dao in daos.values():
if dao is not None:
DAOManager.release(dao)
