I would like to know how can I remove all items in table with Prisma2 and Jest ?
I read the CRUD documentation and I try with this :
user.test.js
....
import { PrismaClient } from "@prisma/client"
beforeEach(async () => {
const prisma = new PrismaClient()
await prisma.user.deleteMany({})
})
...
But I have an error :
Invalid `prisma.user.deleteMany()` invocation:
The change you are trying to make would violate the required relation 'PostToUser' between the `Post` and `User` models.
My Database
CREATE TABLE User (
id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL,
name VARCHAR(255),
email VARCHAR(255) UNIQUE NOT NULL,
password VARCHAR(255) NOT NULL
);
CREATE TABLE Post (
id INTEGER PRIMARY KEY AUTO_INCREMENT NOT NULL,
title VARCHAR(255) NOT NULL,
createdAt TIMESTAMP NOT NULL DEFAULT now(),
content TEXT,
published BOOLEAN NOT NULL DEFAULT false,
fk_user_id INTEGER NOT NULL,
CONSTRAINT `fk_user_id` FOREIGN KEY (fk_user_id) REFERENCES User(id) ON DELETE CASCADE
);
schema.prisma
model Post {
content String?
createdAt DateTime @default(now())
fk_user_id Int
id Int @default(autoincrement()) @id
published Boolean @default(false)
title String
author User @relation(fields: [fk_user_id], references: [id])
@@index([fk_user_id], name: "fk_user_id")
}
model User {
email String @unique
id Int @default(autoincrement()) @id
name String?
password String @default("")
Post Post[]
Profile Profile?
}
You are violating the foreign key constraint between Post
and User
.
You can not remove a User
before deleting its Posts
beforeEach(async () => {
const prisma = new PrismaClient()
await prisma.post.deleteMany({where: {...}}) //delete posts first
await prisma.user.deleteMany({})
})
Or set CASCADE deletion on the foreign key, this way when you delete a User its posts will be automatically deleted