Create modules,providers, services for bd

backend/src/db_service/post.service.ts

@@ -0,0 +1,15 @@
+import { Injectable, Inject } from '@nestjs/common';
+import { Repository } from 'typeorm';
+import { Post } from '../db.entity';
+import { postRep } from '../constants';
+@Injectable()
+export class PostService {
+    constructor(
+        @Inject(postRep)
+        private photoRepository: Repository<Post>,
+    ) {}
+
+    async findAll(): Promise<Post[]> {
+        return this.photoRepository.find();
+    }
+}