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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 CViewContainer implements \Anax\DI\IInjectionAware |
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{ |
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use \Anax\TConfigure, |
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\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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/** |
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* Convert template to path to template file. |
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* |
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* @param string $template the name of the template file to include |
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* |
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* @throws Anax\View\Exception when template file is missing |
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* |
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* @return string as path to the template file |
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*/ |
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public function getTemplateFile($template) |
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{ |
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$paths = $this->config["path"]; |
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$suffix = $this->config["suffix"]; |
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foreach ($paths as $path) { |
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$file = $path . "/" . $template . $suffix; |
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if (is_file($file)) { |
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return $file; |
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} |
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} |
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throw new Exception("Could not find template file '$template'."); |
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} |
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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", $sort = 0) |
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{ |
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if (empty($template)) { |
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return $this; |
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} |
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$view = $this->di->get("view"); |
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if (is_string($template)) { |
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$tpl = $this->getTemplateFile($template); |
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$type = "file"; |
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} elseif (is_array($template)) { |
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// Can be array with complete view or array with callback |
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$tpl = $template; |
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$type = null; |
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$region = isset($tpl["region"]) |
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? $tpl["region"] |
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: $region; |
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if (isset($tpl["callback"])) { |
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// Need to test the callback! |
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$tpl["template"] = $template; |
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$tpl["type"] = "callback"; |
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} elseif (isset($tpl["template"])) { |
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if (!isset($tpl["type"]) || $tpl["type"] === "file") { |
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$tpl["type"] = "file"; |
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$tpl["template"] = $this->getTemplateFile($tpl["template"]); |
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} |
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} |
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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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* 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: