PLM_demo/IT_service/model_handler.py

from .models import *
from Info.func import delete_file
from Info.model_handler import UserHandler


class SettingHandler():

    @staticmethod
    def get_by_company(company: Company):
        try:
            setting = Setting.objects.get(company=company)
            return setting
        except:
            return None


class CaseAttachmentHandler():

    @staticmethod
    def del_by_id(ID):
        try:
            attachment = CaseAttachment.objects.get(id=ID)
            delete_file(attachment.url)
            attachment.delete()
            return True
        except:
            return False