Django에서 model에서 choice값의 value값을 가지고 오는 방법

https://stackoverflow.com/questions/42996853/why-choice-field-displays-keys-instead-of-values-in-django-queryset

https://stackoverflow.com/questions/34781524/django-populate-a-form-choicefield-field-from-a-queryset-and-relate-the-choice-b

https://stackoverflow.com/questions/34781524/django-populate-a-form-choicefield-field-from-a-queryset-and-relate-the-choice-b

https://ssungkang.tistory.com/entry/Django-ChoiceField-%EC%82%AC%EC%9A%A9%ED%95%98%EA%B8%B0