feat: deleteIfNoRelations

packages/server/src/common/exceptions/ModelHasRelations.exception.ts

@@ -0,0 +1,9 @@
+export class ModelHasRelationsError extends Error {
+  type: string;
+
+  constructor(type: string = 'ModelHasRelations', message?: string) {
+    message = message || `Entity has relations`;
+    super(message);
+    this.type = type;
+  }
+}

packages/server/src/common/filters/model-has-relations.filter.ts

@@ -0,0 +1,27 @@
+import {
+  ExceptionFilter,
+  Catch,
+  ArgumentsHost,
+  HttpStatus,
+} from '@nestjs/common';
+import { Response } from 'express';
+import { ModelHasRelationsError } from '../exceptions/ModelHasRelations.exception';
+
+@Catch(ModelHasRelationsError)
+export class ModelHasRelationsFilter implements ExceptionFilter {
+  catch(exception: ModelHasRelationsError, host: ArgumentsHost) {
+    const ctx = host.switchToHttp();
+    const response = ctx.getResponse<Response>();
+    const status = HttpStatus.CONFLICT;
+
+    response.status(status).json({
+      errors: [
+        {
+          statusCode: status,
+          type: exception.type || 'MODEL_HAS_RELATIONS',
+          message: exception.message,
+        },
+      ],
+    });
+  }
+}

packages/server/src/common/types/Objection.d.ts

@@ -0,0 +1,7 @@
+import { QueryBuilder, Model } from 'objection';
+
+declare module 'objection' {
+  interface QueryBuilder<M extends Model, R = M[]> {
+    deleteIfNoRelations(this: QueryBuilder<M, R>, ...args: any[]): Promise<any>;
+  }
+}