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<?php |
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/** |
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* Veto. |
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* PHP Microframework. |
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* |
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* @author Damien Walsh <[email protected]> |
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* @copyright Damien Walsh 2013-2014 |
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* @version 0.1 |
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* @package veto |
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*/ |
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namespace Veto\Layer\Router; |
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use Veto\HTTP\Request; |
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/** |
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* Route |
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* Represents a route within the application. |
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* |
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* @since 0.1 |
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*/ |
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class Route |
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{ |
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/** |
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* The pattern to match. |
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* |
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* @var string |
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*/ |
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protected $pattern; |
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/** |
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* Any regex rules to apply to placeholders within $pattern. |
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* |
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* @var string[] |
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*/ |
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protected $rules; |
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/** |
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* The name of the route. |
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* |
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* @var string |
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*/ |
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protected $name; |
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/** |
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* A list of supported methods. |
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* |
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* @var string[] |
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*/ |
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protected $methods; |
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/** |
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* The controller that handles the route. |
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* |
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* @var string |
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*/ |
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protected $controller; |
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/** |
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* The action that handles the route. |
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* |
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* @var string |
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*/ |
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protected $action; |
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/** |
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* Create a new route. |
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* |
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* @param string $name The name of the route. |
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* @param string $pattern The route pattern string. |
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* @param string[] $rules Any regex rules to apply to placeholders in $pattern. |
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* @param string[] $methods The methods that can be used for this route. |
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* @param string $controller The controller that handles the route. |
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* @param string $action The action that handles the route. |
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*/ |
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public function __construct($name, $pattern, array $rules, array $methods, $controller, $action) |
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{ |
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// Validate the rules |
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foreach ($rules as $parameter => $rule) { |
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if (@preg_match('@' . $rule . '@', null) === false) { |
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throw new \InvalidArgumentException( |
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sprintf('Rule for parameter %s of route %s is not a valid regex string.', $name, $parameter) |
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); |
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} |
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} |
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$this->name = $name; |
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$this->pattern = $pattern; |
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$this->rules = $rules; |
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$this->methods = $methods; |
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$this->controller = $controller; |
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$this->action = $action; |
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} |
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/** |
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* Check if the request matches a defined route pattern. |
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* |
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* Returns an array containing any route parameters on a successful match. |
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* Returns false for failed matches. |
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* |
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* @param Request $request The request to check. |
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* @return array|bool |
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*/ |
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public function matches(Request $request) |
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{ |
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// Verify that the method is appropriate |
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if (count($this->methods) > 0 && !in_array($request->getMethod(), $this->methods)) { |
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return false; |
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} |
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// Check if the pattern contains any {...} blocks |
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preg_match_all('@{([A-Za-z_]+)}@', $this->pattern, $placeholders); |
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if ($placeholders && isset($placeholders[1])) { |
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// Build an array of replacement regexes |
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$replacementRegexes = $targetRegexes = array(); |
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foreach ($placeholders[1] as $placeholder) { |
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$targetRegexes[] = '@{[A-Za-z_]+}@'; |
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$replacementRegexes[] = |
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array_key_exists($placeholder, $this->rules) ? '(' . $this->rules[$placeholder] . ')' : '([^/]+)'; |
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} |
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// Convert all {...} blocks into regex groups |
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$pattern = preg_replace($targetRegexes, $replacementRegexes, $this->pattern); |
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// Get the placeholder names |
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$placeholders = $placeholders[1]; |
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// See if the route matches |
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if (preg_match('@^' . $pattern . '$@', $request->getUri()->getPath(), $matches)) { |
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// Merge the placeholder names with their URI values |
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array_shift($matches); |
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return array_combine($placeholders, $matches); |
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} |
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} |
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// Simple matching - check if the URI matches the pattern |
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return $request->getUri() == $this->pattern ? array() : false; |
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} |
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/** |
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* Generate a URL from a route name and parameter set. |
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* |
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* @param array $parameters Optionally the parameters to use. |
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* @throws \Exception |
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* @return string|boolean The URL on success, false on failure. |
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*/ |
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public function generateUrl(array $parameters = array()) |
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{ |
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$url = $this->pattern; |
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// Get each of the {...} blocks in the URL |
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preg_match_all('@{([A-Za-z_]+)}@', $url, $placeholders); |
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// Swap all the parameters |
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foreach ($placeholders[1] as $placeholder) { |
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if (!array_key_exists($placeholder, $parameters)) { |
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throw new \Exception( |
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'Parameter "' . $placeholder . '" must be specified to ' . |
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'generate URL for route "' . $this->name . '"' |
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); |
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} |
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// Replace it with the value from the array |
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$url = str_replace('{' . $placeholder . '}', $parameters[$placeholder], $url); |
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} |
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return $url; |
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} |
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/** |
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* @param string $action |
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*/ |
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public function setAction($action) |
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{ |
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$this->action = $action; |
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} |
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/** |
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* @return string |
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*/ |
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public function getAction() |
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{ |
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return $this->action; |
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} |
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/** |
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* @param string $controller |
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*/ |
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public function setController($controller) |
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{ |
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$this->controller = $controller; |
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} |
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/** |
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* @return string |
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*/ |
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public function getController() |
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{ |
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return $this->controller; |
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} |
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/** |
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* @param string $pattern |
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*/ |
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public function setPattern($pattern) |
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{ |
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$this->pattern = $pattern; |
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} |
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/** |
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* @return string |
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*/ |
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public function getPattern() |
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{ |
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return $this->pattern; |
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} |
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/** |
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* @param string $name |
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*/ |
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public function setName($name) |
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{ |
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$this->name = $name; |
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} |
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/** |
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* @return string |
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*/ |
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public function getName() |
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{ |
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return $this->name; |
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} |
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/** |
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* @param string[] $methods |
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*/ |
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public function setMethods($methods) |
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{ |
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$this->methods = $methods; |
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} |
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/** |
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* @return string[] |
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*/ |
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public function getMethods() |
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{ |
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return $this->methods; |
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} |
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} |
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