Hooks

The hooks are modules that add functionality to the core. They are loaded during the server boot.

Structure

File structure

module.exports = strapi => {
  const hook = {
    /**
     * Default options
     */

    defaults: {
      // config object
    },

    /**
     * Initialize the hook
     */

    async initialize() {
      // await someAsyncCode()
      // const settings = {...this.defaults, ...strapi.config.hook.settings.**};
    },
  };

  return hook;
};

defaults (object): Contains the default configurations.
initialize (function): Called during the server boot.

The configurations of the hook are accessible through strapi.config.hook.settings.**.

The hooks are accessible through the strapi.hook variable.

Node modules

Every folder that follows this name pattern strapi-hook-* in your ./node_modules folder will be loaded as a hook.

A hook needs to follow the structure below:

/strapi-hook-[...]
└─── lib
     - index.js
- LICENSE.md
- package.json
- README.md

The index.js is the entry point to your hook. It should look like the example above.

Custom hooks

The framework allows to load hooks from the project directly without having to install them from npm. It's a great way to take advantage of the features of the hooks system for code that doesn't need to be shared between apps. To achieve this, you have to create a ./hooks folder at the root of your project and put the hooks into it.

/project
└─── admin
└─── api
└─── config
└─── hooks
│   └─── strapi-documentation
│        - index.js
│   └─── strapi-server-side-rendering
│        - index.js
└─── public
- favicon.ico
- package.json
- server.js

Configuration and activation

To activate and configure your hook with custom options, you need to edit your ./config/environments/**/hook.json file in your Strapi app.

{
  ...
  "hook-name": {
    "enabled": true,
    ...
  }
}

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