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<?php |
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namespace Anax\View; |
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/** |
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* A view container, store all views per region, render at will. |
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* |
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*/ |
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class CViewContainerBasic implements \Anax\DI\IInjectionAware |
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{ |
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use \Anax\DI\TInjectionAware; |
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/** |
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* Properties |
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* |
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*/ |
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private $views = []; // Array for all views |
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private $suffix; // Template file suffix |
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private $path; // Base path for views |
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/** |
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* Add a view to be included as a template file. |
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* |
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* @param string $template the name of the template file to include |
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* @param array $data variables to make available to the view, default is empty |
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* @param string $region which region to attach the view |
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* @param int $sort which order to display the views |
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* |
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* @return $this |
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*/ |
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public function add($template, $data = [], $region = 'main', $sort = 0) |
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{ |
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$view = $this->di->get('view'); |
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if (is_string($template)) { |
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$tpl = $this->path . $template . $this->suffix; |
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$type = 'file'; |
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} elseif (is_array($template)) { |
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$tpl = $template; |
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$type = 'callback'; |
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} |
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$view->set($tpl, $data, $sort, $type); |
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$view->setDI($this->di); |
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$this->views[$region][] = $view; |
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return $this; |
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} |
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/** |
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* Add a callback to be rendered as a view. |
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* |
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* @param string $callback function to call to get the content of the view |
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* @param array $data variables to make available to the view, default is empty |
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* @param string $region which region to attach the view |
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* @param int $sort which order to display the views |
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* |
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* @return $this |
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*/ |
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View Code Duplication |
public function addCallback($callback, $data = [], $region = 'main', $sort = 0) |
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{ |
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$view = $this->di->get('view'); |
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$view->set(['callback' => $callback], $data, $sort, 'callback'); |
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$view->setDI($this->di); |
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$this->views[$region][] = $view; |
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return $this; |
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} |
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/** |
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* Add a string as a view. |
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* |
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* @param string $content the content |
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* @param string $region which region to attach the view |
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* @param int $sort which order to display the views |
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* |
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* @return $this |
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*/ |
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View Code Duplication |
public function addString($content, $region = 'main', $sort = 0) |
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{ |
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$view = $this->di->get('view'); |
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$view->set($content, [], $sort, 'string'); |
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$view->setDI($this->di); |
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$this->views[$region][] = $view; |
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return $this; |
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} |
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/** |
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* Set the suffix of the template files to include. |
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* |
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* @param string $suffix file suffix of template files, append to filenames for template files |
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* |
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* @return $this |
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*/ |
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public function setFileSuffix($suffix) |
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{ |
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$this->suffix = $suffix; |
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} |
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/** |
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* Set base path where to find views. |
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* |
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* @param string $path where all views reside |
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* |
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* @return $this |
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* @throws \Exception |
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*/ |
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View Code Duplication |
public function setBasePath($path) |
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{ |
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if (!is_dir($path)) { |
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throw new \Exception("Base path for views is not a directory: " . $path); |
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} |
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$this->path = rtrim($path, '/') . '/'; |
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} |
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/** |
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* Check if a region has views to render. |
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* |
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* @param string $region which region to check |
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* |
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* @return $this |
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*/ |
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public function hasContent($region) |
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{ |
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return isset($this->views[$region]); |
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} |
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/** |
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* Render all views for a specific region. |
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* |
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* @param string $region which region to use |
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* |
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* @return $this |
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*/ |
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public function render($region = 'main') |
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{ |
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if (!isset($this->views[$region])) { |
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return $this; |
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} |
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mergesort($this->views[$region], function ($a, $b) { |
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$sa = $a->sortOrder(); |
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$sb = $b->sortOrder(); |
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if ($sa == $sb) { |
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return 0; |
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} |
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return $sa < $sb ? -1 : 1; |
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}); |
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foreach ($this->views[$region] as $view) { |
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$view->render(); |
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} |
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return $this; |
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} |
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} |
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If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: