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<?php |
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namespace WPEmerge\View; |
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use Exception; |
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use View as ViewService; |
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/** |
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* Render view files with php. |
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*/ |
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class PhpViewEngine implements ViewEngineInterface { |
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/** |
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* {@inheritDoc} |
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*/ |
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public function exists( $view ) { |
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$file = $this->resolveFilepath( $view ); |
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return strlen( $file ) > 0; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function canonical( $view ) { |
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$file = $this->resolveFilepath( $view ); |
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return $file; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function make( $views, $context = [] ) { |
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foreach ( $views as $view ) { |
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if ( $this->exists( $view ) ) { |
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$filepath = $this->resolveFilepath( $view ); |
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return $this->makeView( $view, $filepath, $context ); |
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} |
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} |
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throw new Exception( 'View not found for "' . implode( ', ', $views ) . '"' ); |
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} |
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/** |
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* Create a view instance. |
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* |
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* @param string $name |
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* @param string $filepath |
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* @param array $context |
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* @return string |
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*/ |
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protected function makeView( $name, $filepath, $context = [] ) { |
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return (new PhpView()) |
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->setName( $name ) |
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->setFilepath( $filepath ) |
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->with( $context ); |
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} |
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/** |
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* Resolve a view or a view array to an absolute filepath |
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* |
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* @param string $view |
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* @return string |
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*/ |
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protected function resolveFilepath( $view ) { |
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$file = locate_template( $view, false ); |
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if ( ! $file ) { |
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// locate_template failed to find the view - try adding a .php extension |
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$file = locate_template( $view . '.php', false ); |
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} |
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if ( ! $file ) { |
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// locate_template failed to find the view - test if a valid absolute path was passed |
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$file = $this->resolveFilepathFromFilesystem( $view ); |
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} |
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if ( $file ) { |
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$file = realpath( $file ); |
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} |
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return $file; |
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} |
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/** |
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* Resolve the view if it exists on the filesystem |
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* |
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* @param string $view |
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* @return string |
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*/ |
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protected function resolveFilepathFromFilesystem( $view ) { |
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return file_exists( $view ) ? $view : ''; |
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} |
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} |
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htmlburger /
wpemerge
Loading history...
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: