Prisma CRUD: A Beginner's Guide

This article dives into Prisma's CRUD functionalities (Create, Read, Update, Delete) using a practical example. It's geared towards beginners who are getting started with Prisma and building server-side applications.

Setting Up the Environment

The video tutorial references a pre-existing setup with a Prisma client and model. If you're new to Prisma, you'll need to set up your project with the necessary tools before following along. Here's a general guideline:

1. Install Prisma: Follow the official documentation to install Prisma for your preferred environment (Node.js, JavaScript, etc.).
2. Define your data model: Create a Prisma schema file (.prisma) to define the structure of your data, including models and their properties.
3. Generate Prisma Client: Run the prisma generate command to generate the Prisma Client library that interacts with your database.

Understanding Prisma CRUD

The video demonstrates CRUD operations using a tasks model. Here's a breakdown of the key concepts:

• Create: This operation adds a new record to the database. You'll typically provide the data for the new record, specifying the values for each property defined in your model.
• Read: This involves retrieving data from the database. You can either fetch all records from a model (find many) or get a specific record using a unique identifier (find unique).
• Update: This operation modifies an existing record. You'll need to specify the record you want to update (usually by ID) and the new data to be applied.
• Delete: This removes a record from the database. Similar to update, you'll identify the record using a unique key.

Code Example

The video showcases these functionalities in code. Here's a simplified example (without error handling) to illustrate the concepts:

// Prisma Client import
const { PrismaClient } = require('@prisma/client');

const prisma = new PrismaClient();

// Function to create a task
async function createTask(content) {
await prisma.task.create({
data: {
content,
},
});
}

// Function to get all tasks
async function getTasks() {
const tasks = await prisma.task.findMany({
orderBy: {
createdAt: 'desc', // Sort by creation date in descending order (optional)
},
});
return tasks;
}

// Example usage
createTask('Wake up!')
.then(() => console.log('Task created'))
.catch((error) => console.error(error));

getTasks()
.then((tasks) => console.log('Tasks:', tasks))
.catch((error) => console.error(error));

Additional Points

• The code uses async/await for asynchronous operations.
• Prisma offers functionalities like filtering and sorting when retrieving data (demonstrated in the getTasks function).
• The video mentions an upsert option for update, which combines update and create functionalities.

Conclusion

This article provides a basic understanding of Prisma CRUD operations. With practice and exploration of Prisma's documentation, you can leverage these functionalities to build powerful server-side applications that interact with your database effectively.