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RobotLoader: comfortable autoloading
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====================================
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[](https://packagist.org/packages/nette/robot-loader)
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[](https://travis-ci.org/nette/robot-loader)
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[](https://coveralls.io/github/nette/robot-loader?branch=master)
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[](https://github.com/nette/robot-loader/releases)
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[](https://github.com/nette/robot-loader/blob/master/license.md)
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Introduction
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------------
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RobotLoader is a tool that gives you comfort of automated class loading for your entire application including third-party libraries.
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- get rid of all `require`
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- requires no strict file naming conventions
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- allows more classes in single file
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- extremely fast
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- no manual cache updates, everything runs automatically
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- highly mature, stable and widely used library
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RobotLoader is incredibly comfortable and addictive!
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If you like Nette, **[please make a donation now](https://nette.org/donate)**. Thank you!
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So we can forget about those famous code blocks:
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```php
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require_once 'Utils/Page.php';
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require_once 'Utils/Style.php';
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require_once 'Utils/Paginator.php';
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...
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```
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Like the Google robot crawls and indexes websites, RobotLoader crawls all PHP scripts and records what classes and interfaces were found in them.
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These records are then saved in cache and used during all subsequent requests.
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Documentation can be found on the [website](https://doc.nette.org/robotloader).
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Installation
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------------
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The recommended way to install is via Composer:
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```
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composer require nette/robot-loader
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```
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It requires PHP version 5.6 and supports PHP up to 7.3.
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Usage
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-----
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You just need to specifiy what directories to index and where to save the cache:
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```php
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$loader = new Nette\Loaders\RobotLoader;
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// Add directories for RobotLoader to index
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$loader->addDirectory(__DIR__ . '/app');
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$loader->addDirectory(__DIR__ . '/libs');
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// And set caching to the 'temp' directory
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$loader->setTempDirectory(__DIR__ . '/temp');
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$loader->register(); // Run the RobotLoader
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```
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And that's all. From now on, you don't need to use `require`. Great, isn't it?
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When RobotLoader encounters duplicate class name during indexing, it throws an exception and informs you about it.
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The `$loader->setAutoRefresh(true or false)` determines whether RobotLoader should reindex files if asked for nonexistent class.
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This feature should be disabled on production server.
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If you want RobotLoader to skip some directory, use `$loader->excludeDirectory('temp')`.
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By default, RobotLoader reports errors in PHP files by throwing exception `ParseError` (since PHP 7.0). It can be disabled via `$loader->reportParseErrors(false)`.
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PHP files analyzer
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------------------
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RobotLoader can also be used to find classes, interfaces, and trait in PHP files without using the autoloading feature:
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```php
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$loader = new Nette\Loaders\RobotLoader;
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$loader->addDirectory(__DIR__ . '/app');
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// Scans directories for classes / intefaces / traits
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$loader->rebuild();
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// Returns array of class => filename pairs
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$res = $loader->getIndexedClasses();
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```
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When scanning files again, we can use the cache and unmodified files will not be analyzed repeatedly:
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```php
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$loader = new Nette\Loaders\RobotLoader;
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$loader->addDirectory(__DIR__ . '/app');
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$loader->setTempDirectory(__DIR__ . '/temp');
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// Scans directories using a cache
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$loader->refresh();
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// Returns array of class => filename pairs
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$res = $loader->getIndexedClasses();
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```
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Enjoy RobotLoader!
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