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What is the `macro` method in Laravel? - Code Stap
What is the `macro` method in Laravel?

What is the `macro` method in Laravel?

In Laravel, the macro method is a powerful feature that allows you to extend existing classes or components dynamically by adding new methods at runtime. This is particularly useful when you want to add functionality to classes that you don’t control directly, such as Laravel’s built-in components.

How It Works

The macro method is available on many classes in Laravel, particularly on collections and other components, and it can be used to define a new method that can be called on instances of that class.

Defining a Macro

To define a macro, you typically use the Macroable trait, which provides the necessary functionality. Here’s how to define a macro in a service provider or anywhere else in your application:

Example

<?php
use Illuminate\Support\Facades\Route;

// Define a new macro for the Route facade
Route::macro('apiResourceWithCustom', function ($name, $controller) {
    Route::get("{$name}", "{$controller}@index");
    Route::get("{$name}/{id}", "{$controller}@show");
    Route::post("{$name}", "{$controller}@store");
    Route::put("{$name}/{id}", "{$controller}@update");
    Route::delete("{$name}/{id}", "{$controller}@destroy");
});
?>

Using a Macro

After defining a macro, you can use it just like any other method on the class:

Example

<?php
Route::apiResourceWithCustom('posts', 'PostController');
?>

This will create routes for a RESTful API resource for posts, using the custom logic defined in the macro.

Example with Collections

You can also define macros for Laravel collections. Here’s an example of adding a custom macro to a collection:

Example

<?php
use Illuminate\Support\Collection;

Collection::macro('sumOfSquares', function () {
    return $this->map(function ($item) {
        return $item * $item;
    })->sum();
});

// Usage
$collection = collect([1, 2, 3]);
$squareSum = $collection->sumOfSquares(); // Returns 14 (1^2 + 2^2 + 3^2)
?>

Benefits of Using Macros

  1. Reusability: Define commonly used methods once and reuse them throughout your application.
  2. Clarity: Improve code readability by providing descriptive method names that encapsulate common functionality.
  3. Flexibility: Add methods to existing classes without modifying their source code, which can be particularly useful when working with third-party libraries or frameworks.

Related Questions & Topics