Hooks

Definition of Hooks in FeathersJS:

Hooks are functions that can be run before or after a service method is executed. They are used to perform additional operations, such as data validation, authentication, or transforming data, before the main service method is executed.

Creating and Configuring Hooks:

To create a hook in FeathersJS, you first need to create a new file in the /src/hooks directory. This file should contain the hook function and any additional configurations. You can then register the hook in the service that you want to use it with. For example:

// src/hooks/validate-user.js

module.exports = function (options = {}) {

  return async context => {

    const { data } = context;

    // Validate the user data

    if (!data.email) {

      throw new Error('Email is required.');

    }

    return context;

  };

};

// src/services/users.js

const validateUser = require('../hooks/validate-user');

module.exports = {

  before: {

    create: [

      validateUser()

    ]

  },

  ...

};

hook_export_example.js

module.exports = (options = {}) => {

    return async context => {

        console.log('==============>', context);

        return context;

    };

};