fix

backend/package.json

@@ -31,8 +31,10 @@
     "@nestjs/platform-express": "^11.0.1",
     "@nestjs/platform-socket.io": "^11.1.11",
     "@nestjs/websockets": "^11.1.11",
+    "@prisma/adapter-pg": "^7.2.0",
     "@prisma/client": "^7.2.0",
     "bcrypt": "^6.0.0",
+    "pg": "^8.13.1",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.3",
     "nanoid": "^5.1.6",
@@ -53,6 +55,7 @@
     "@types/jest": "^30.0.0",
     "@types/node": "^22.10.7",
     "@types/passport-jwt": "^4.0.1",
+    "@types/pg": "^8.11.10",
     "@types/supertest": "^6.0.2",
     "eslint": "^9.18.0",
     "eslint-config-prettier": "^10.0.1",

backend/src/prisma/prisma.service.ts

@@ -1,16 +1,14 @@
 import { Injectable, OnModuleInit, OnModuleDestroy } from '@nestjs/common';
 import { PrismaClient } from '@prisma/client';
+import { PrismaPg } from '@prisma/adapter-pg';
+import { Pool } from 'pg';
 
 @Injectable()
 export class PrismaService extends PrismaClient implements OnModuleInit, OnModuleDestroy {
   constructor() {
-    super({
-      datasources: {
-        db: {
-          url: process.env.DATABASE_URL,
-        },
-      },
-    });
+    const pool = new Pool({ connectionString: process.env.DATABASE_URL });
+    const adapter = new PrismaPg(pool);
+    super({ adapter });
   }
 
   async onModuleInit() {