Files
TijdVoorDeTest/tvdt/quiz/converters.py

42 lines
1.2 KiB
Python

import base64
import binascii
from .models import Season, Candidate
class SeasonCodeConverter:
regex = r"[A-Za-z\d]{5}"
def to_python(self, value: str) -> Season:
try:
return Season.objects.get(season_code=value.upper())
except Season.DoesNotExist:
raise ValueError
def to_url(self, value: Season) -> str:
return value.season_code
class CandidateConverter:
regex = r"[A-Za-z\d]{5}\/[\w\-=]+"
def to_python(self, value: str) -> Candidate:
season_code, base64_name = value.split("/")
try:
name = base64.urlsafe_b64decode(base64_name).decode()
except binascii.Error:
raise ValueError
try:
season = Season.objects.get(season_code=season_code)
candidate = Candidate.objects.get(name=name, season=season)
return candidate
except [Season.DoesNotExist, Candidate.DoesNotExist]:
raise ValueError
def to_url(self, candidate: Candidate) -> str:
base64_candidate = base64.urlsafe_b64encode(candidate.name.encode()).decode()
return f"{candidate.season.season_code}/{base64_candidate}"