ggallon / prisma-server-components

Demo app of React Server Components.

React Server Components Demo with Prisma

This is a fork of the official React Server Components Demo. You can learn more about how Prisma and React Server Components fit together in this video.

Instead of sending raw SQL queries, this repo uses Prisma as an ORM to communicate with the database. This approach has a number of benefits:

• More intuitive querying (no SQL knowledge required)
• Better developer experience (e.g. through autocompletion)
• Safer database queries (e.g. prevents SQL injections)
• Easier to query relations
• Human-readable data model + generated (but customizable) SQL migration scripts

Prisma	SQL
// A database query sent with Prisma const notes = prisma.note.findMany({ where: { title: { contains: searchText, }, }, });	// A database query sent with plain SQL const notes = db.query( `select * from notes where title ilike $1 order by id desc`, ['%' + searchText + '%'] ).rows;

This demo also uses a plain SQLite database file instead of requiring a PostgreSQL server. This enables you to explore the awesome benefits of Server Components without any additional setup.

Usage

git clone [email protected]:prisma/server-components-demo.git
cd server-components-demo
npm install
npm start

This demo features an experimental package, react-prisma. You can see react-prisma in action in src/NoteList.server.js.

Switch to another database (e.g. PostgreSQL, MySQL, SQL Server)

If you want to try this example with another database than SQLite, you can adjust the the database connection in prisma/schema.prisma by reconfiguring the datasource block.

Learn more about the different connection configurations in the docs.

Expand for an overview of example configurations with different databases

PostgreSQL

For PostgreSQL, the connection URL has the following structure:

datasource db {
  provider = "postgresql"
  url      = "postgresql://USER:PASSWORD@HOST:PORT/DATABASE?schema=SCHEMA"
}

Here is an example connection string with a local PostgreSQL database:

datasource db {
  provider = "postgresql"
  url      = "postgresql://janedoe:mypassword@localhost:5432/notesapi?schema=public"
}

MySQL

For MySQL, the connection URL has the following structure:

datasource db {
  provider = "mysql"
  url      = "mysql://USER:PASSWORD@HOST:PORT/DATABASE"
}

Here is an example connection string with a local MySQL database:

datasource db {
  provider = "mysql"
  url      = "mysql://janedoe:mypassword@localhost:3306/notesapi"
}

Microsoft SQL Server (Preview)

Here is an example connection string with a local Microsoft SQL Server database:

datasource db {
  provider = "sqlserver"
  url      = "sqlserver://localhost:1433;initial catalog=sample;user=sa;password=mypassword;"
}

Because SQL Server is currently in Preview, you need to specify the previewFeatures on your generator block:

generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["microsoftSqlServer"]
}

Evolving the app

Prisma enables you to run migrations based on the declarative Prisma schema. Assume you want to add more functionality to the app and add a second table to the database to associate every note with an "author", here's the workflow that you can apply with Prisma.

First adjust the data model in prisma/schema.prisma:

// prisma/schema.prisma

model Note {
   id        Int      @id @default(autoincrement())
   createdAt DateTime @default(now())
   updatedAt DateTime @updatedAt
   title     String?
   body      String?
+  author    User?    @relation(fields: [authorId], references: [id])
+  authorId  Int?
}

+model User {
+   id    Int     @id @default(autoincrement())
+   name  String?
+   email String  @unique
+   notes Note[]
+}

Then run the following command to create the new User table and its relation to the Note table in the database:

npx prisma migrate dev --preview-feature

You can now read and write data into the User table using Prisma as well:

// Create a new note
prisma.user.create({
  name: "Dan",
  email: "[email protected]",
  notes: {
    create: {
      title: "I did not make ReactJS"
    }
  }
})

// Query all notes with their authors
prisma.note.findMany({
  include: {
    author: true
  }
})

View and edit the data in Prisma Studio

Prisma Studio is a "database browser" that lets you view and edit the data in your database. You can either download it for your operating system or run the following command to run it in your browser:

npx prisma studio

Here's a screenshot of Prisma Studio that shows the seeded data:

License

This demo is MIT licensed.