assetManager`. * * You can modify its configuration by adding an array to your application config under `components` * as shown in the following example: * * ```php * 'assetManager' => [ * 'bundles' => [ * // you can override AssetBundle configs here * ], * ] * ``` * * @property AssetConverterInterface $converter The asset converter. Note that the type of this property * differs in getter and setter. See [[getConverter()]] and [[setConverter()]] for details. * * @author Qiang Xue * @since 2.0 */ class AssetManager extends Component { /** * @var array|boolean list of asset bundle configurations. This property is provided to customize asset bundles. * When a bundle is being loaded by [[getBundle()]], if it has a corresponding configuration specified here, * the configuration will be applied to the bundle. * * The array keys are the asset bundle names, which typically are asset bundle class names without leading backslash. * The array values are the corresponding configurations. If a value is false, it means the corresponding asset * bundle is disabled and [[getBundle()]] should return null. * * If this property is false, it means the whole asset bundle feature is disabled and [[getBundle()]] * will always return null. * * The following example shows how to disable the bootstrap css file used by Bootstrap widgets * (because you want to use your own styles): * * ~~~ * [ * 'yii\bootstrap\BootstrapAsset' => [ * 'css' => [], * ], * ] * ~~~ */ public $bundles = []; /** * @return string the root directory storing the published asset files. */ public $basePath = '@webroot/assets'; /** * @return string the base URL through which the published asset files can be accessed. */ public $baseUrl = '@web/assets'; /** * @var array mapping from source asset files (keys) to target asset files (values). * * This property is provided to support fixing incorrect asset file paths in some asset bundles. * When an asset bundle is registered with a view, each relative asset file in its [[AssetBundle::css|css]] * and [[AssetBundle::js|js]] arrays will be examined against this map. If any of the keys is found * to be the last part of an asset file (which is prefixed with [[AssetBundle::sourcePath]] if available), * the corresponding value will replace the asset and be registered with the view. * For example, an asset file `my/path/to/jquery.js` matches a key `jquery.js`. * * Note that the target asset files should be either absolute URLs or paths relative to [[baseUrl]] and [[basePath]]. * * In the following example, any assets ending with `jquery.min.js` will be replaced with `jquery/dist/jquery.js` * which is relative to [[baseUrl]] and [[basePath]]. * * ```php * [ * 'jquery.min.js' => 'jquery/dist/jquery.js', * ] * ``` */ public $assetMap = []; /** * @var boolean whether to use symbolic link to publish asset files. Defaults to false, meaning * asset files are copied to [[basePath]]. Using symbolic links has the benefit that the published * assets will always be consistent with the source assets and there is no copy operation required. * This is especially useful during development. * * However, there are special requirements for hosting environments in order to use symbolic links. * In particular, symbolic links are supported only on Linux/Unix, and Windows Vista/2008 or greater. * * Moreover, some Web servers need to be properly configured so that the linked assets are accessible * to Web users. For example, for Apache Web server, the following configuration directive should be added * for the Web folder: * * ~~~ * Options FollowSymLinks * ~~~ */ public $linkAssets = false; /** * @var integer the permission to be set for newly published asset files. * This value will be used by PHP chmod() function. No umask will be applied. * If not set, the permission will be determined by the current environment. */ public $fileMode; /** * @var integer the permission to be set for newly generated asset directories. * This value will be used by PHP chmod() function. No umask will be applied. * Defaults to 0775, meaning the directory is read-writable by owner and group, * but read-only for other users. */ public $dirMode = 0775; /** * @var callback a PHP callback that is called before copying each sub-directory or file. * This option is used only when publishing a directory. If the callback returns false, the copy * operation for the sub-directory or file will be cancelled. * * The signature of the callback should be: `function ($from, $to)`, where `$from` is the sub-directory or * file to be copied from, while `$to` is the copy target. * * This is passed as a parameter `beforeCopy` to [[\yii\helpers\FileHelper::copyDirectory()]]. */ public $beforeCopy; /** * @var callback a PHP callback that is called after a sub-directory or file is successfully copied. * This option is used only when publishing a directory. The signature of the callback is the same as * for [[beforeCopy]]. * This is passed as a parameter `afterCopy` to [[\yii\helpers\FileHelper::copyDirectory()]]. */ public $afterCopy; /** * @var boolean whether the directory being published should be copied even if * it is found in the target directory. This option is used only when publishing a directory. * You may want to set this to be `true` during the development stage to make sure the published * directory is always up-to-date. Do not set this to true on production servers as it will * significantly degrade the performance. */ public $forceCopy = false; /** * @var boolean whether to append a timestamp to the URL of every published asset. When this is true, * the URL of a published asset may look like `/path/to/asset?v=timestamp`, where `timestamp` is the * last modification time of the published asset file. * You normally would want to set this property to true when you have enabled HTTP caching for assets, * because it allows you to bust caching when the assets are updated. * @since 2.0.3 */ public $appendTimestamp = false; private $_dummyBundles = []; /** * Initializes the component. * @throws InvalidConfigException if [[basePath]] is invalid */ public function init() { parent::init(); $this->basePath = Yii::getAlias($this->basePath); if (!is_dir($this->basePath)) { throw new InvalidConfigException("The directory does not exist: {$this->basePath}"); } elseif (!is_writable($this->basePath)) { throw new InvalidConfigException("The directory is not writable by the Web process: {$this->basePath}"); } else { $this->basePath = realpath($this->basePath); } $this->baseUrl = rtrim(Yii::getAlias($this->baseUrl), '/'); } /** * Returns the named asset bundle. * * This method will first look for the bundle in [[bundles]]. If not found, * it will treat `$name` as the class of the asset bundle and create a new instance of it. * * @param string $name the class name of the asset bundle (without the leading backslash) * @param boolean $publish whether to publish the asset files in the asset bundle before it is returned. * If you set this false, you must manually call `AssetBundle::publish()` to publish the asset files. * @return AssetBundle the asset bundle instance * @throws InvalidConfigException if $name does not refer to a valid asset bundle */ public function getBundle($name, $publish = true) { if ($this->bundles === false) { return $this->loadDummyBundle($name); } elseif (!isset($this->bundles[$name])) { return $this->bundles[$name] = $this->loadBundle($name, [], $publish); } elseif ($this->bundles[$name] instanceof AssetBundle) { return $this->bundles[$name]; } elseif (is_array($this->bundles[$name])) { return $this->bundles[$name] = $this->loadBundle($name, $this->bundles[$name], $publish); } elseif ($this->bundles[$name] === false) { return $this->loadDummyBundle($name); } else { throw new InvalidConfigException("Invalid asset bundle configuration: $name"); } } /** * Loads asset bundle class by name * * @param string $name bundle name * @param array $config bundle object configuration * @param boolean $publish if bundle should be published * @return AssetBundle * @throws InvalidConfigException if configuration isn't valid */ protected function loadBundle($name, $config = [], $publish = true) { if (!isset($config['class'])) { $config['class'] = $name; } /* @var $bundle AssetBundle */ $bundle = Yii::createObject($config); if ($publish) { $bundle->publish($this); } return $bundle; } /** * Loads dummy bundle by name * * @param string $name * @return AssetBundle */ protected function loadDummyBundle($name) { if (!isset($this->_dummyBundles[$name])) { $this->_dummyBundles[$name] = $this->loadBundle($name, [ 'sourcePath' => null, 'js' => [], 'css' => [], 'depends' => [], ]); } return $this->_dummyBundles[$name]; } /** * Returns the actual URL for the specified asset. * The actual URL is obtained by prepending either [[baseUrl]] or [[AssetManager::baseUrl]] to the given asset path. * @param AssetBundle $bundle the asset bundle which the asset file belongs to * @param string $asset the asset path. This should be one of the assets listed in [[js]] or [[css]]. * @return string the actual URL for the specified asset. */ public function getAssetUrl($bundle, $asset) { if (($actualAsset = $this->resolveAsset($bundle, $asset)) !== false) { $asset = $actualAsset; $basePath = $this->basePath; $baseUrl = $this->baseUrl; } else { $basePath = $bundle->basePath; $baseUrl = $bundle->baseUrl; } if (!Url::isRelative($asset)) { return $asset; } if ($this->appendTimestamp && ($timestamp = @filemtime("$basePath/$asset")) > 0) { return "$baseUrl/$asset?v=$timestamp"; } else { return "$baseUrl/$asset"; } } /** * Returns the actual file path for the specified asset. * @param AssetBundle $bundle the asset bundle which the asset file belongs to * @param string $asset the asset path. This should be one of the assets listed in [[js]] or [[css]]. * @return string|boolean the actual file path, or false if the asset is specified as an absolute URL */ public function getAssetPath($bundle, $asset) { if (($actualAsset = $this->resolveAsset($bundle, $asset)) !== false) { return Url::isRelative($actualAsset) ? $this->basePath . '/' . $actualAsset : false; } else { return Url::isRelative($asset) ? $bundle->basePath . '/' . $asset : false; } } /** * @param AssetBundle $bundle * @param string $asset * @return string|boolean */ protected function resolveAsset($bundle, $asset) { if (isset($this->assetMap[$asset])) { return $this->assetMap[$asset]; } if ($bundle->sourcePath !== null && Url::isRelative($asset)) { $asset = $bundle->sourcePath . '/' . $asset; } $n = mb_strlen($asset); foreach ($this->assetMap as $from => $to) { $n2 = mb_strlen($from); if ($n2 <= $n && substr_compare($asset, $from, $n - $n2, $n2) === 0) { return $to; } } return false; } private $_converter; /** * Returns the asset converter. * @return AssetConverterInterface the asset converter. */ public function getConverter() { if ($this->_converter === null) { $this->_converter = Yii::createObject(AssetConverter::className()); } elseif (is_array($this->_converter) || is_string($this->_converter)) { if (is_array($this->_converter) && !isset($this->_converter['class'])) { $this->_converter['class'] = AssetConverter::className(); } $this->_converter = Yii::createObject($this->_converter); } return $this->_converter; } /** * Sets the asset converter. * @param array|AssetConverterInterface $value the asset converter. This can be either * an object implementing the [[AssetConverterInterface]], or a configuration * array that can be used to create the asset converter object. */ public function setConverter($value) { $this->_converter = $value; } /** * @var array published assets */ private $_published = []; /** * Publishes a file or a directory. * * This method will copy the specified file or directory to [[basePath]] so that * it can be accessed via the Web server. * * If the asset is a file, its file modification time will be checked to avoid * unnecessary file copying. * * If the asset is a directory, all files and subdirectories under it will be published recursively. * Note, in case $forceCopy is false the method only checks the existence of the target * directory to avoid repetitive copying (which is very expensive). * * By default, when publishing a directory, subdirectories and files whose name starts with a dot "." * will NOT be published. If you want to change this behavior, you may specify the "beforeCopy" option * as explained in the `$options` parameter. * * Note: On rare scenario, a race condition can develop that will lead to a * one-time-manifestation of a non-critical problem in the creation of the directory * that holds the published assets. This problem can be avoided altogether by 'requesting' * in advance all the resources that are supposed to trigger a 'publish()' call, and doing * that in the application deployment phase, before system goes live. See more in the following * discussion: http://code.google.com/p/yii/issues/detail?id=2579 * * @param string $path the asset (file or directory) to be published * @param array $options the options to be applied when publishing a directory. * The following options are supported: * * - beforeCopy: callback, a PHP callback that is called before copying each sub-directory or file. * This overrides [[beforeCopy]] if set. * - afterCopy: callback, a PHP callback that is called after a sub-directory or file is successfully copied. * This overrides [[afterCopy]] if set. * - forceCopy: boolean, whether the directory being published should be copied even if * it is found in the target directory. This option is used only when publishing a directory. * This overrides [[forceCopy]] if set. * * @return array the path (directory or file path) and the URL that the asset is published as. * @throws InvalidParamException if the asset to be published does not exist. */ public function publish($path, $options = []) { $path = Yii::getAlias($path); if (isset($this->_published[$path])) { return $this->_published[$path]; } if (!is_string($path) || ($src = realpath($path)) === false) { throw new InvalidParamException("The file or directory to be published does not exist: $path"); } if (is_file($src)) { return $this->_published[$path] = $this->publishFile($src); } else { return $this->_published[$path] = $this->publishDirectory($src, $options); } } /** * Publishes a file. * @param string $src the asset file to be published * @return array the path and the URL that the asset is published as. * @throws InvalidParamException if the asset to be published does not exist. */ protected function publishFile($src) { $dir = $this->hash(dirname($src) . filemtime($src)); $fileName = basename($src); $dstDir = $this->basePath . DIRECTORY_SEPARATOR . $dir; $dstFile = $dstDir . DIRECTORY_SEPARATOR . $fileName; if (!is_dir($dstDir)) { FileHelper::createDirectory($dstDir, $this->dirMode, true); } if ($this->linkAssets) { if (!is_file($dstFile)) { symlink($src, $dstFile); } } elseif (@filemtime($dstFile) < @filemtime($src)) { copy($src, $dstFile); if ($this->fileMode !== null) { @chmod($dstFile, $this->fileMode); } } return [$dstFile, $this->baseUrl . "/$dir/$fileName"]; } /** * Publishes a directory. * @param string $src the asset directory to be published * @param array $options the options to be applied when publishing a directory. * The following options are supported: * * - beforeCopy: callback, a PHP callback that is called before copying each sub-directory or file. * This overrides [[beforeCopy]] if set. * - afterCopy: callback, a PHP callback that is called after a sub-directory or file is successfully copied. * This overrides [[afterCopy]] if set. * - forceCopy: boolean, whether the directory being published should be copied even if * it is found in the target directory. This option is used only when publishing a directory. * This overrides [[forceCopy]] if set. * * @return array the path directory and the URL that the asset is published as. * @throws InvalidParamException if the asset to be published does not exist. */ protected function publishDirectory($src, $options) { $dir = $this->hash($src . filemtime($src)); $dstDir = $this->basePath . DIRECTORY_SEPARATOR . $dir; if ($this->linkAssets) { if (!is_dir($dstDir)) { symlink($src, $dstDir); } } elseif (!empty($options['forceCopy']) || ($this->forceCopy && !isset($options['forceCopy'])) || !is_dir($dstDir)) { $opts = [ 'dirMode' => $this->dirMode, 'fileMode' => $this->fileMode, ]; if (isset($options['beforeCopy'])) { $opts['beforeCopy'] = $options['beforeCopy']; } elseif ($this->beforeCopy !== null) { $opts['beforeCopy'] = $this->beforeCopy; } else { $opts['beforeCopy'] = function ($from, $to) { return strncmp(basename($from), '.', 1) !== 0; }; } if (isset($options['afterCopy'])) { $opts['afterCopy'] = $options['afterCopy']; } elseif ($this->afterCopy !== null) { $opts['afterCopy'] = $this->afterCopy; } FileHelper::copyDirectory($src, $dstDir, $opts); } return [$dstDir, $this->baseUrl . '/' . $dir]; } /** * Returns the published path of a file path. * This method does not perform any publishing. It merely tells you * if the file or directory is published, where it will go. * @param string $path directory or file path being published * @return string the published file path. False if the file or directory does not exist */ public function getPublishedPath($path) { $path = Yii::getAlias($path); if (isset($this->_published[$path])) { return $this->_published[$path][0]; } if (is_string($path) && ($path = realpath($path)) !== false) { $base = $this->basePath . DIRECTORY_SEPARATOR; if (is_file($path)) { return $base . $this->hash(dirname($path) . filemtime($path)) . DIRECTORY_SEPARATOR . basename($path); } else { return $base . $this->hash($path . filemtime($path)); } } else { return false; } } /** * Returns the URL of a published file path. * This method does not perform any publishing. It merely tells you * if the file path is published, what the URL will be to access it. * @param string $path directory or file path being published * @return string the published URL for the file or directory. False if the file or directory does not exist. */ public function getPublishedUrl($path) { $path = Yii::getAlias($path); if (isset($this->_published[$path])) { return $this->_published[$path][1]; } if (is_string($path) && ($path = realpath($path)) !== false) { if (is_file($path)) { return $this->baseUrl . '/' . $this->hash(dirname($path) . filemtime($path)) . '/' . basename($path); } else { return $this->baseUrl . '/' . $this->hash($path . filemtime($path)); } } else { return false; } } /** * Generate a CRC32 hash for the directory path. Collisions are higher * than MD5 but generates a much smaller hash string. * @param string $path string to be hashed. * @return string hashed string. */ protected function hash($path) { return sprintf('%x', crc32($path . Yii::getVersion())); } }