- Laravel Application Development Cookbook
- Terry Matula
- 236字
- 2021-07-23 15:33:32
Creating advanced Autoloaders with namespaces and directories
If we want to be sure that our custom classes don't conflict with any other class in our app, we will need to add them to a namespace. Using the PSR-0 standard and Composer, we can easily autoload these classes into Laravel.
Getting ready
For this recipe, we need to set up a standard Laravel installation.
How to do it...
To complete this recipe, follow these steps:
- Inside the
/appdirectory, create a new directory namedcustom, and inside ofcustom, create a directory namedCustom, and inCustom, create a directory namedShapes. - Inside the
/app/custom/Custom/Shapesdirectory, create a file namedMyShapes.phpand add this code:<?php namespace Custom\Shapes; class MyShapes { public function triangle() { return 'I am a triangle'; } } - In the root of the application, open the
composer.jsonfile and locate theautoloadsection. Update it so it looks like this:"autoload": { "classmap": [ "app/commands", "app/controllers", "app/models", "app/database/migrations", "app/database/seeds", "app/tests/TestCase.php", ], "psr-0": { "Custom": "app/custom" } } - Open the command line and run
dump-autoloadon Composer:php composer.phar dump-autoload - Now we can call that class by using its namespace. For example, if we create a route:
Route::get('shape', function() { $shape = new Custom\Shapes\MyShapes; return $shape->triangle(); });
How it works...
Namespaces are a powerful addition to PHP, and they allow our classes to be used without us having to worry about their class names interfering with other class names. By autoloading namespaces in Laravel, we could create a complex group of classes and never have to worry about class names conflicting with other namespaces.
For our purposes, we're loading the custom class through composer, and the PSR-0 standard of autoloading.
There's more...
To further extend the use of our namespaced class, we could use the IoC to bind it to our app. More information can be found in the Laravel documentation at http://laravel.com/docs/ioc.
See also
- The Using Autoloader to map a class name to its file recipe