fascinating-indigo•5mo ago

A Package or implementation example for NestJS

Hello, I want to adopt the simple rest and I want to modify my API to comply with the simple-rest data provider. Do you know any package in JavaScript that implements json-server querying standards to TypeORM

5 Replies

kapa.ai•5mo ago

Hi @Onder. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To adopt the Simple REST data provider in your project and modify your API to comply with its standards, you can use the nestjsx/crud package. This package simplifies the creation of CRUD RESTful APIs and can be integrated with TypeORM, which is a popular ORM for Node.js and works well with NestJS. Here are the steps to set up nestjsx/crud with TypeORM in your NestJS project: 1. Install Required Packages: First, you need to install the necessary packages. Run the following command to install nestjsx/crud, nestjsx/crud-typeorm, and other required dependencies:

   npm i @nestjsx/crud @nestjsx/crud-typeorm class-transformer class-validator

   npm i @nestjsx/crud @nestjsx/crud-typeorm class-transformer class-validator

If you encounter any issues with @nestjs/typeorm, you can install it using:

   npm install @nestjs/typeorm

   npm install @nestjs/typeorm

2. Create a New NestJS Project: If you don't already have a NestJS project, you can create one using the Nest CLI:

   npm i -g @nestjs/cli
   nest new api

   npm i -g @nestjs/cli
   nest new api

3. Set Up TypeORM: Install TypeORM and the MySQL driver (or any other database driver you prefer):

   npm install --save @nestjs/typeorm @nestjs/config typeorm mysql2

   npm install --save @nestjs/typeorm @nestjs/config typeorm mysql2

Create an ormconfig.json file in your project root with the following content:

   {
     "type": "mysql",
     "host": "localhost",
     "port": 3306,
     "username": "test",
     "password": "test",
     "database": "test",
     "entities": ["dist/**/*.entity.js"],
     "synchronize": true
   }

   {
     "type": "mysql",
     "host": "localhost",
     "port": 3306,
     "username": "test",
     "password": "test",
     "database": "test",
     "entities": ["dist/**/*.entity.js"],
     "synchronize": true
   }

4. Create an Entity: Create an entity class in src/vehicles/entities/vehicle.entity.ts:

   import { Entity, PrimaryGeneratedColumn, Column } from "typeorm";

   @Entity()
   export class Vehicle {
     @PrimaryGeneratedColumn()
     id: number;

     @Column()
     make: string;

     @Column()
     model: string;
@Column()
     year: number;

     @Column()
     color: string;
   }

   import { Entity, PrimaryGeneratedColumn, Column } from "typeorm";

   @Entity()
   export class Vehicle {
     @PrimaryGeneratedColumn()
     id: number;

     @Column()
     make: string;

     @Column()
     model: string;
@Column()
     year: number;

     @Column()
     color: string;
   }

5. Create a Service: Create a service to handle the business logic in src/vehicles/vehicles.service.ts:

   import { Injectable } from "@nestjs/common";
   import { InjectRepository } from "@nestjs/typeorm";
   import { Repository, FindOneOptions } from "typeorm";
   import { Vehicle } from "./entities/vehicle.entity";

   @Injectable()
   export class VehiclesService {
     constructor(
       @InjectRepository(Vehicle)
       private vehicleRepository: Repository<Vehicle>,
     ) {}

     async findAll(): Promise<Vehicle[]> {
       return this.vehicleRepository.find();
     }

     async findOne(id: number): Promise<Vehicle> {
       const options: FindOneOptions<Vehicle> = { where: { id } };
       return this.vehicleRepository.findOne(options);
     }

     async create(vehicle: Vehicle): Promise<Vehicle> {
       return this.vehicleRepository.save(vehicle);
     }

     async update(id: number, vehicle: Vehicle): Promise<Vehicle> {
       await this.vehicleRepository.update(id, vehicle);
       const options: FindOneOptions<Vehicle> = { where: { id } };
       return this.vehicleRepository.findOne(options);
     }

     async remove(id: number): Promise<void> {
       await this.vehicleRepository.delete(id);
     }
   }

   import { Injectable } from "@nestjs/common";
   import { InjectRepository } from "@nestjs/typeorm";
   import { Repository, FindOneOptions } from "typeorm";
   import { Vehicle } from "./entities/vehicle.entity";

   @Injectable()
   export class VehiclesService {
     constructor(
       @InjectRepository(Vehicle)
       private vehicleRepository: Repository<Vehicle>,
     ) {}

     async findAll(): Promise<Vehicle[]> {
       return this.vehicleRepository.find();
     }

     async findOne(id: number): Promise<Vehicle> {
       const options: FindOneOptions<Vehicle> = { where: { id } };
       return this.vehicleRepository.findOne(options);
     }

     async create(vehicle: Vehicle): Promise<Vehicle> {
       return this.vehicleRepository.save(vehicle);
     }

     async update(id: number, vehicle: Vehicle): Promise<Vehicle> {
       await this.vehicleRepository.update(id, vehicle);
       const options: FindOneOptions<Vehicle> = { where: { id } };
       return this.vehicleRepository.findOne(options);
     }

     async remove(id: number): Promise<void> {
       await this.vehicleRepository.delete(id);
     }
   }

6 ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@238969575289389057> kapa.ai is still learning and improving, please let us know how it did by reacting below

fascinating-indigoOP•5mo ago

@kapa.ai hey sorry i'm already implementing it but i face too many restrictions

kapa.ai•5mo ago

Let me check the knowledge base for you. One moment! :books: ---------------------- If you're facing too many restrictions with your current implementation and are looking for a more straightforward way to comply with the Simple REST data provider standards, you might consider customizing the data provider directly in your Refine application. This approach allows you to tailor the data provider to fit your specific API requirements without being constrained by external packages. Here’s how you can customize the Simple REST data provider in Refine: 1. Install the Simple REST Data Provider: First, ensure you have the Simple REST data provider installed in your project:

   npm i @refinedev/simple-rest

   npm i @refinedev/simple-rest

2. Customize the Data Provider: You can use the swizzle command to customize the Simple REST data provider. This allows you to modify the data provider to fit your API's specific needs. Run the swizzle command in your project directory:

   npm run refine swizzle

   npm run refine swizzle

Select @refinedev/simple-rest from the list of available data providers. This will create a customizable version of the data provider in your project. 3. Edit the Data Provider: Edit the /rest-data-provider/index.ts file to customize the data provider. For example, if you need to change the pagination strategy or handle a custom response format, you can modify the relevant methods. Here’s an example of how you might override the getList method to handle a custom pagination strategy:

   import { DataProvider } from "@refinedev/core";
   import axios from "axios";

   const apiUrl = "YOUR_API_URL";
   const httpClient = axios.create();
const customDataProvider: DataProvider = {
     ...dataProvider(apiUrl, httpClient),
     getList: async ({ resource, pagination, sort, filters }) => {
       const { current = 1, pageSize = 10 } = pagination ?? {};
       const offset = (current - 1) * pageSize;

       const response = await httpClient.get(`${apiUrl}/${resource}`, {
         params: {
           _start: offset,
           _end: offset + pageSize,
           _sort: sort?.[0]?.field,
           _order: sort?.[0]?.order,
           ...filters,
         },
       });

       return {
         data: response.data,
         total: parseInt(response.headers["x-total-count"], 10),
       };
     },
   };

   export default customDataProvider;

   import { DataProvider } from "@refinedev/core";
   import axios from "axios";

   const apiUrl = "YOUR_API_URL";
   const httpClient = axios.create();
const customDataProvider: DataProvider = {
     ...dataProvider(apiUrl, httpClient),
     getList: async ({ resource, pagination, sort, filters }) => {
       const { current = 1, pageSize = 10 } = pagination ?? {};
       const offset = (current - 1) * pageSize;

       const response = await httpClient.get(`${apiUrl}/${resource}`, {
         params: {
           _start: offset,
           _end: offset + pageSize,
           _sort: sort?.[0]?.field,
           _order: sort?.[0]?.order,
           ...filters,
         },
       });

       return {
         data: response.data,
         total: parseInt(response.headers["x-total-count"], 10),
       };
     },
   };

   export default customDataProvider;

4. Use the Customized Data Provider: Finally, pass the customized data provider to the Refine component in your application:

   import { Refine } from "@refinedev/core";
   import customDataProvider from "./rest-data-provider";

   const App = () => {
     return (
       <Refine
         dataProvider={customDataProvider}
         /* ... */
       />
     );
   };

   export default App;

   import { Refine } from "@refinedev/core";
   import customDataProvider from "./rest-data-provider";

   const App = () => {
     return (
       <Refine
         dataProvider={customDataProvider}
         /* ... */
       />
     );
   };

   export default App;

By customizing the data provider, you can ensure it fits your API's specific requirements without being limited by external packages. For more detailed information, you can refer to the Refine documentation on customizing the data provider (https://refine.dev/docs/data/packages/simple-rest/#customizing-the-data-provider-). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•5mo ago

<@238969575289389057> kapa.ai is still learning and improving, please let us know how it did by reacting below

A Package or implementation example for NestJS

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