casl-ability.factory.ts

interface CaslPermission {
  action: PermissionAction;
  subject: string;
  condition?: PermissionCondition;
}
@Injectable()
export class CaslAbilityFactory {
  constructor(private authoService: AuthzService) {}
  async createForUser(user: User): Promise<AppAbility> {
    const dbPermissions: Permission[] = await this.authoService.findAllPermissionsOfUser(user);
    const caslPermissions: CaslPermission[] = dbPermissions.map(p => ({
      action: p.action,
      subject: p.permissionObject.name,
      conditions: Permission.parseCondition(p.condition, user),
    }));
    return new Ability<[PermissionAction, PermissionObjectType]>(caslPermissions);
  }
}