feat: relation migration for sample custom relation support

prisma/migrations/20241102021258_init/migration.sql

@@ -0,0 +1,11 @@
+-- CreateTable
+CREATE TABLE "todo" (
+    "id" UUID NOT NULL DEFAULT gen_random_uuid(),
+    "name" TEXT NOT NULL,
+    "user_id" UUID NOT NULL,
+
+    CONSTRAINT "todo_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "todo" ADD CONSTRAINT "todo_user_id_fkey" FOREIGN KEY ("user_id") REFERENCES "account"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

prisma/schema.prisma

@@ -18,6 +18,16 @@ datasource db {
 model User {
   id   String @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
   name String
+  Todo Todo[]
 
   @@map("account")
 }
+
+model Todo {
+  id     String @id @default(dbgenerated("gen_random_uuid()")) @db.Uuid
+  name   String
+  user   User   @relation(fields: [userId], references: [id])
+  userId String @map("user_id") @db.Uuid
+
+  @@map("todo")
+}