Prisma Tutorial - Next Gen ORM (with JavaScript & TypeScript)

Prisma Tutorial - Next Gen ORM (with JavaScript & TypeScript)

⌨️ Source Code
https://github.com/hidjou/classsed-orms-prisma

#javascript #typescript #prisma #programming #developer

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Buddha Community

Prisma Tutorial - Next Gen ORM (with JavaScript & TypeScript)

Prisma Tutorial - Next Gen ORM (with JavaScript & TypeScript)

Prisma Tutorial - Next Gen ORM (with JavaScript & TypeScript)

⌨️ Source Code
https://github.com/hidjou/classsed-orms-prisma

#javascript #typescript #prisma #programming #developer

Terry  Tremblay

Terry Tremblay

1602147513

Now Learn JavaScript Programming Language With Microsoft

icrosoft has released a new series of video tutorials on YouTube for novice programmers to get a hands-on renowned programming language — JavaScript.

This isn’t the first attempt by Microsoft to come up with video tutorials by beginner programmers. The company also has a series of YouTube tutorials on Python for beginners.

For JavaScript, Microsoft has launched a series of 51 videos as ‘Beginner’s Series to JavaScript,’ for young programmers, developers and coders who are interested in building browser applications using JavaScript. These video tutorials will also help programmers and coders to use relevant software development kits (SDKs) and JavaScript frameworks, such as Google’s Angular.


“Learning a new framework or development environment is made even more difficult when you don’t know the programming language,” stated on the Microsoft Developer channel on YouTube. “Fortunately, we’re here to help! We’ve created this series of videos to focus on the core concepts of JavaScript.”

It further stated — while the tutorials don’t cover every aspect of JavaScript, it indeed will help in building a foundation from which one can continue to grow. By the end of this series, Microsoft claims that the novice programmers will be able to work through tutorials, quick starts, books, and other resources, continuing to grow on their own.


#news #javascript #javascript tutorial #javascript tutorials #microsoft tutorials on javascript

wp codevo

wp codevo

1608042336

JavaScript Shopping Cart - Javascript Project for Beginners

https://youtu.be/5B5Hn9VvrVs

#shopping cart javascript #hopping cart with javascript #javascript shopping cart tutorial for beginners #javascript cart project #javascript tutorial #shopping cart

Ruth  Nabimanya

Ruth Nabimanya

1641739800

Prisma: Next-generation ORM for Node.js & TypeScript

Prisma

What is Prisma?

Prisma is a next-generation ORM that consists of these tools:

Prisma Client can be used in any Node.js or TypeScript backend application (including serverless applications and microservices). This can be a REST API, a GraphQL API a gRPC API, or anything else that needs a database.

Are you looking for Prisma 1? The Prisma 1 repository has been renamed to prisma/prisma1.

Getting started

The fastest way to get started with Prisma is by following the Quickstart (5 min).

The Quickstart is based on a preconfigured SQLite database. You can also get started with your own database (PostgreSQL and MySQL) by following one of these guides:

How does Prisma work

This section provides a high-level overview of how Prisma works and its most important technical components. For a more thorough introduction, visit the Prisma documentation.

The Prisma schema

Every project that uses a tool from the Prisma toolkit starts with a Prisma schema file. The Prisma schema allows developers to define their application models in an intuitive data modeling language. It also contains the connection to a database and defines a generator:

// Data source
datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

// Generator
generator client {
  provider = "prisma-client-js"
}

// Data model
model Post {
  id        Int     @id @default(autoincrement())
  title     String
  content   String?
  published Boolean @default(false)
  author    User?   @relation(fields:  [authorId], references: [id])
  authorId  Int?
}

model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
  posts Post[]
}

In this schema, you configure three things:

  • Data source: Specifies your database connection (via an environment variable)
  • Generator: Indicates that you want to generate Prisma Client
  • Data model: Defines your application models

The Prisma data model

On this page, the focus is on the data model. You can learn more about Data sources and Generators on the respective docs pages.

Functions of Prisma models

The data model is a collection of models. A model has two major functions:

  • Represent a table in the underlying database
  • Provide the foundation for the queries in the Prisma Client API

Getting a data model

There are two major workflows for "getting" a data model into your Prisma schema:

  • Generate the data model from introspecting a database
  • Manually writing the data model and mapping it to the database with Prisma Migrate

Once the data model is defined, you can generate Prisma Client which will expose CRUD and more queries for the defined models. If you're using TypeScript, you'll get full type-safety for all queries (even when only retrieving the subsets of a model's fields).


Accessing your database with Prisma Client

Generating Prisma Client

The first step when using Prisma Client is installing its npm package:

npm install @prisma/client

Note that the installation of this package invokes the prisma generate command which reads your Prisma schema and generates the Prisma Client code. The code will be located in node_modules/.prisma/client, which is exported by node_modules/@prisma/client/index.d.ts.

After you change your data model, you'll need to manually re-generate Prisma Client to ensure the code inside node_modules/.prisma/client get updated:

prisma generate

Refer to the documentation for more information about "generating the Prisma client".

Using Prisma Client to send queries to your database

Once the Prisma Client is generated, you can import it in your code and send queries to your database. This is what the setup code looks like.

Import and instantiate Prisma Client

You can import and instantiate Prisma Client as follows:

import { PrismaClient } from '@prisma/client'

const prisma = new PrismaClient()

or

const { PrismaClient } = require('@prisma/client')

const prisma = new PrismaClient()

Now you can start sending queries via the generated Prisma Client API, here are few sample queries. Note that all Prisma Client queries return plain old JavaScript objects.

Learn more about the available operations in the Prisma Client docs or watch this demo video (2 min).

Retrieve all User records from the database

// Run inside `async` function
const allUsers = await prisma.user.findMany()

Include the posts relation on each returned User object

// Run inside `async` function
const allUsers = await prisma.user.findMany({
  include: { posts: true },
})

Filter all Post records that contain "prisma"

// Run inside `async` function
const filteredPosts = await prisma.post.findMany({
  where: {
    OR: [
      { title: { contains: 'prisma' } },
      { content: { contains: 'prisma' } },
    ],
  },
})

Create a new User and a new Post record in the same query

// Run inside `async` function
const user = await prisma.user.create({
  data: {
    name: 'Alice',
    email: 'alice@prisma.io',
    posts: {
      create: { title: 'Join us for Prisma Day 2021' },
    },
  },
})

Update an existing Post record

// Run inside `async` function
const post = await prisma.post.update({
  where: { id: 42 },
  data: { published: true },
})

Usage with TypeScript

Note that when using TypeScript, the result of this query will be statically typed so that you can't accidentally access a property that doesn't exist (and any typos are caught at compile-time). Learn more about leveraging Prisma Client's generated types on the Advanced usage of generated types page in the docs.

Community

Prisma has a large and supportive community of enthusiastic application developers. You can join us on Slack and here on GitHub.

Security

If you have a security issue to report, please contact us at security@prisma.io.

Support

Ask a question about Prisma

You can ask questions and initiate discussions about Prisma-related topics in the prisma repository on GitHub.

👉 Ask a question

Create a bug report for Prisma

If you see an error message or run into an issue, please make sure to create a bug report! You can find best practices for creating bug reports (like including additional debugging output) in the docs.

👉 Create bug report

Submit a feature request

If Prisma currently doesn't have a certain feature, be sure to check out the roadmap to see if this is already planned for the future.

If the feature on the roadmap is linked to a GitHub issue, please make sure to leave a +1 on the issue and ideally a comment with your thoughts about the feature!

👉 Submit feature request

Contributing

Refer to our contribution guidelines and Code of Conduct for contributors.

Build Status

  • Prisma Tests Status:
  • E2E Tests Status:

Download Details:
Author: prisma
Source Code: https://github.com/prisma/prisma
License: Apache-2.0 License

#prisma #database #node #typescript #postgresql #mysql #javascript 

Verdie  Murray

Verdie Murray

1646100180

Learn Object Key iteration in JavaScript and TypeScript

Looping through an object by its keys is a common task for many #JavaScript developers. In this lesson we discuss why your assumptions can break when migrating your code to #TypeScript and a quick fix you can use if you trust you code completely 🌹

#typescript #javascript