Add a REST endpoint - Vendure

REST-style endpoints can be defined as part of a plugin.

:::info REST endpoints are implemented as NestJS Controllers. For comprehensive documentation, see the NestJS controllers documentation. :::

In this guide we will define a plugin that adds a single REST endpoint at http://localhost:3000/products which returns a list of all products.

Create a controller

First let's define the controller:

// products.controller.ts
import { Controller, Get } from '@nestjs/common';
import { Ctx, ProductService, RequestContext } from '@vendure/core';

@Controller('products')
export class ProductsController {
    constructor(private productService: ProductService) {
    }

    @Get()
    findAll(@Ctx() ctx: RequestContext) {
        return this.productService.findAll(ctx);
    }
}

The key points to note here are:

The @Controller() decorator defines the base path for all endpoints defined in this controller. In this case, all endpoints will be prefixed with /products.
The @Get() decorator defines a GET endpoint at the base path. The method name findAll is arbitrary.
The @Ctx() decorator injects the RequestContext which is required for all service methods.

Register the controller with the plugin

import { PluginCommonModule, VendurePlugin } from '@vendure/core';
import { ProductsController } from './api/products.controller';

@VendurePlugin({
  imports: [PluginCommonModule],
  controllers: [ProductsController],
})
export class RestPlugin {}

:::info Note: The PluginCommonModule should be imported to gain access to Vendure core providers - in this case it is required in order to be able to inject ProductService into our controller. :::

The plugin can then be added to the VendureConfig:

import { VendureConfig } from '@vendure/core';
import { RestPlugin } from './plugins/rest-plugin/rest.plugin';

export const config: VendureConfig = {
    // ...
    plugins: [
        // ...
        RestPlugin, // [!code highlight]
    ],
};

Controlling access to REST endpoints

You can use the @Allow() decorator to declare the permissions required to access a REST endpoint:

import { Controller, Get } from '@nestjs/common';
import { Allow, Permission, Ctx, ProductService, RequestContext } from '@vendure/core';

@Controller('products')
export class ProductsController {
    constructor(private productService: ProductService) {}

    @Allow(Permission.ReadProduct) // [!code highlight]
    @Get()
    findAll(@Ctx() ctx: RequestContext) {
        return this.productService.findAll(ctx);
    }
}

:::tip The following Vendure API decorators can also be used with NestJS controllers: @Allow(), @Transaction(), @Ctx().

Additionally, NestJS supports a number of other REST decorators detailed in the NestJS controllers guide :::