This example shows how to use Prisma with MongoDB and use Prisma Client in a Node.js script to read and write data in a MongoDB database. You can find the database schema in ./prisma/schema.prisma.

The example consists of two parts:

• tests/prisma.test.ts: Jest test (in TypeScript) with a variety of Prisma Client queries and assertions to showcase access patterns
• src/prisma-examples: TypesScript files containing different Prisma Client queries

Download this example:

npx try-prisma@latest --template databases/mongodb

Then, navigate into the project directory:

cd mongodb

git clone git@github.com:prisma/prisma-examples.git --depth=1

cd prisma-examples/databases/mongodb
npm install

Run the following command from the mongodb folder to start MongoDB:

docker compose up -d

Note: The docker-compose.yml is where the root username and password are set with the MONGO_INITDB_ROOT_USERNAME MONGO_INITDB_ROOT_PASSWORD env vars

Prisma uses the DATABASE_URL environment variable defined in the .env file (in the same folder as package.json) to connect to the database.

Create the file:

touch .env

Then add the following line:

DATABASE_URL="mongodb://root:prisma@localhost:27017/prisma-mongo?authSource=admin&retryWrites=true&w=majority"

Generate Prisma Client using the following command:

npx prisma generate

To run the test in tests/prisma.test.ts, run the following command:

npm run test

To run the example scripts in src/prisma-examples, run the following commands:

npm run script:create-user
npm run script:find-user
npm run script:update-user
npm run script:delete-user
npm run script:create-user-post
npm run script:find-posts

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