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68 lines
2.2 KiB
Markdown
68 lines
2.2 KiB
Markdown
# Creating a Custom API Endpoint
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> Custom API Endpoints allow you to extend the core functionality of the platform's API.
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## 1. Setup the Boilerplate
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Custom endpoints are dynamically loaded from within your project's `/extensions/endpoints` folder. Keep in mind that the extensions directory is configurable within your env file, and may be located elsewhere.
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Each endpoint is registered using a registration function within a scoped directory. For example, to create a custom `/custom/my-endpoint/` endpoint, you would add the following function to `/extensions/endpoints/my-endpoint/index.js`.
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```js
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module.exports = function registerEndpoint(router) {
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router.get('/', (req, res) => res.send('Hello, World!'));
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}
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```
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You can also create several scoped endpoints within a single function:
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```js
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// /custom/my-endpoint/
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// /custom/my-endpoint/intro
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// /custom/my-endpoint/goodbye
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module.exports = function registerEndpoint(router) {
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router.get('/', (req, res) => res.send('Hello, World!')),
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router.get('/intro', (req, res) => res.send('Nice to meet you.')),
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router.get('/goodbye', (req, res) => res.send('Goodbye!'));
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}
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```
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## 2. Develop your Custom Endpoint
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The `registerEndpoint` function receives two parameters: `router` and `context`. Router is an express Router instance that is scoped to `/custom/<extension-name>`, while `context` holds the following properties:
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* `services` — All API interal services.
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* `exceptions` — API exception objects that can be used to throw "proper" errors.
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* `database` — Knex instance that is connected to the current database.
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* `env` — Parsed environment variables.
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## 3. Restart the API
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To deploy your endpoint, simply restart the API by running:
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```bash
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npx directus start
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```
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---
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## Full Example:
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```js
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// extensions/endpoints/recipes/index.js
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module.exports = function registerEndpoint(router, { services, exceptions }) {
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const { ItemsService } = services;
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const { ServiceUnavailableException } = exceptions;
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const recipeService = new ItemsService('recipes');
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router.get('/', (req, res) => {
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recipeService
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.readByQuery({ sort: 'name', fields: '*' })
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.then(results => res.json(results))
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.catch(error => { throw new ServiceUnavailableException(error.message) });
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});
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}
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```
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