Deletes now return 204 instead of 404 (better rest compatability)

ref #13

src/controllers/UserGroupController.ts

@@ -5,6 +5,7 @@ import { EntityFromBody, EntityFromParam } from 'typeorm-routing-controllers-ext
 import { UserGroupIdsNotMatchingError, UserGroupNotFoundError } from '../errors/UserGroupErrors';
 import { CreateUserGroup } from '../models/actions/CreateUserGroup';
 import { UserGroup } from '../models/entities/UserGroup';
+import { ResponseEmpty } from '../models/responses/ResponseEmpty';
 
 
 @JsonController('/usergroups')
@@ -71,11 +72,12 @@ export class UserGroupController {
 
 	@Delete('/:id')
 	@ResponseSchema(UserGroup)
-	@ResponseSchema(UserGroupNotFoundError, { statusCode: 404 })
+	@ResponseSchema(ResponseEmpty, { statusCode: 204 })
+	@OnUndefined(204)
 	@OpenAPI({ description: 'Delete a specified usergroup (if it exists).' })
 	async remove(@EntityFromParam('id') group: UserGroup) {
 		if (!group) {
-			throw new UserGroupNotFoundError();
+			return null;
 		}
 
 		await this.userGroupsRepository.delete(group);