Creating First Extension

Here we introduce IceHrm extensions and covers the steps needed to create a basic extension
Introduction
IceHrm extensions allow developers to extend the features offered by IceHrm without making changes to the IceHrm core. Here we will start building an extension to list some tasks for employees
Create the directory icehrm/extensions if it doesn't exist
Create a directory named tasks inside icehrm/extensions
Code for this extension is here: https://github.com/gamonoid/icehrm/tree/feature/custom-extentions-example/extensions/tasks​
Add meta.json file
icehrm
    |--extnsions
          |--tasks
               |--meta.json
The meta.json file for this extension should look like:
{
    "label": "My Tasks",
    "menu": ["Tasks", "fa-list"],
    "icon": "fa-tasks",
    "user_levels": [
        "Admin",
        "Manager",
        "User"
    ],
    "model_namespace": "\\Tasks\\Model",
    "manager": "\\Tasks\\Extension",
    "headless": false
}
menu: the name of the main menu and the icon for the main menu
label: the name of the menu item that will be created by this extension
icon: the icon for the menu that will hold the extension
user_levels: which types of users will be able to see and use the extension (in this case Admins / Managers and Employees)
headless: if true this extension will not have any UI visibility. It'll just function as a background module
manager: the main class which will control the extension
model_namespace: the namespace which will hold all the database model classes
Add Extension Manager Class
icehrm
    |--extnsions
          |--tasks
               |--src
                  |--Tasks
                       |--Extension.php
               |--meta.json
Extension.php
<?php
namespace Tasks;
​
use Classes\IceExtension;
​
class Extension extends IceExtension
{
​
    public function install() {
​
    }
​
    public function uninstall() {
​
    }
​
    public function setupModuleClassDefinitions()
    {
​
    }
​
    public function setupRestEndPoints()
    {
​
    }
}
Adding Extension Include File
Every extension should have an include file with the same name as the extension. In our example, it will be tasks.php
icehrm
    |--extnsions
          |--tasks
               |--src
                  |--Tasks
                       |--Extension.php
               |--meta.json
               |--tasks.php
tasks.php
<?php
​
require_once __DIR__.'/src/Tasks/Extension.php';
Adding the View file
Every extension must have a view file if it's not running on headless mode. File should always be <extension_dir>/web/index.php
icehrm
    |--extnsions
          |--tasks
               |--src
                  |--Tasks
                       |--Extension.php
               |--web
                   |--index.php
               |--meta.json
               |--tasks.php
web/index.php
<?php
$user = \Classes\BaseService::getInstance()->getCurrentUser();
echo "Welcome ".$user->username;
Here we use a core class from Icehrm to get the currently logged in user
Load the Extension in IceHrm
Visit http://icehrm.os and you should see the My Tasks menu
Developer Guide - Previous
Setup Development Environment
Next - Developer Guide
Adding a DB Migration
Last updated 4 months ago