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<?php |
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namespace Consolidation\Config\Inject; |
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use Consolidation\Config\Util\ConfigMerge; |
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/** |
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* Given an object that contains configuration methods, inject any |
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* configuration found in the configuration file. |
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* |
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* The proper use for this method is to call setter methods of the |
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* provided object. Using configuration to call methods that do work |
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* is an abuse of this mechanism. |
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*/ |
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class ConfigForSetters |
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{ |
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protected $config; |
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public function __construct($config, $group, $prefix = '', $postfix = '') |
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{ |
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if (!empty($group) && empty($postfix)) { |
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$postfix = '.'; |
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} |
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$this->config = new ConfigMerge($config, $group, $prefix, $postfix); |
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} |
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public function apply($object, $configurationKey) |
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{ |
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$settings = $this->config->get($configurationKey); |
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foreach ($settings as $setterMethod => $args) { |
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$fn = [$object, $setterMethod]; |
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if (is_callable($fn)) { |
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$result = call_user_func_array($fn, (array)$args); |
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// We require that $fn must only be used with setter methods. |
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// Setter methods are required to always return $this so that |
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// they may be chained. We will therefore throw an exception |
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// for any setter that returns something else. |
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if ($result != $object) { |
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$methodDescription = get_class($object) . "::$setterMethod"; |
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$propertyDescription = $this->config->describe($configurationKey); |
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throw new \Exception("$methodDescription did not return '\$this' when processing $propertyDescription."); |
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} |
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} |
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} |
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} |
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} |
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consolidation /
config
