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Refactored getModule and hasModule.

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This commit is contained in:
Qiang Xue
2013-10-16 20:27:18 -04:00
parent 71222c1f1f
commit 8293e4d9d7
1 changed files with 24 additions and 32 deletions
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56
framework/yii/base/Module.php
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@@ -326,55 +326,47 @@ abstract class Module extends Component
} }
/** /**
* Checks whether the named module exists. * Checks whether the child module of the specified ID exists.
* @param string $id module ID * This method supports checking the existence of both child and grand child modules.
* @param string $id module ID. For grand child modules, use ID path relative to this module (e.g. `admin/content`).
* @return boolean whether the named module exists. Both loaded and unloaded modules * @return boolean whether the named module exists. Both loaded and unloaded modules
* are considered. * are considered.
*/ */
public function hasModule($id) public function hasModule($id)
{ {
if (strpos($id, '/') === false) { if (($pos = strpos($id, '/')) !== false) {
return isset($this->_modules[$id]); // sub-module
$module = $this->getModule(substr($id, 0, $pos));
return $module === null ? false : $module->hasModule(substr($id, $pos + 1));
} else { } else {
// it's a sub-module return isset($this->_modules[$id]);
$ids = explode('/', $id);
$module = $this;
foreach ($ids as $id) {
if (!isset($module->_modules[$id])) {
return false;
}
$module = $module->getModule($id);
}
return true;
} }
} }
/** /**
* Retrieves the named module. * Retrieves the child module of the specified ID.
* @param string $id module ID (case-sensitive). * This method supports retrieving both child modules and grand child modules.
* @param string $id module ID (case-sensitive). To retrieve grand child modules,
* use ID path relative to this module (e.g. `admin/content`).
* @param boolean $load whether to load the module if it is not yet loaded. * @param boolean $load whether to load the module if it is not yet loaded.
* @return Module|null the module instance, null if the module does not exist. * @return Module|null the module instance, null if the module does not exist.
* @see hasModule() * @see hasModule()
*/ */
public function getModule($id, $load = true) public function getModule($id, $load = true)
{ {
if (strpos($id, '/') === false) { if (($pos = strpos($id, '/')) !== false) {
if (isset($this->_modules[$id])) { // sub-module
if ($this->_modules[$id] instanceof Module) { $module = $this->getModule(substr($id, 0, $pos));
return $this->_modules[$id]; return $module === null ? null : $module->getModule(substr($id, $pos + 1), $load);
} elseif ($load) { }
Yii::trace("Loading module: $id", __METHOD__);
return $this->_modules[$id] = Yii::createObject($this->_modules[$id], $id, $this); if (isset($this->_modules[$id])) {
} if ($this->_modules[$id] instanceof Module) {
return $this->_modules[$id];
} elseif ($load) {
Yii::trace("Loading module: $id", __METHOD__);
return $this->_modules[$id] = Yii::createObject($this->_modules[$id], $id, $this);
} }
} else {
// it's a sub-module
$ids = explode('/', $id);
$module = $this;
foreach ($ids as $id) {
$module = $module->getModule($id);
}
return $module;
} }
return null; return null;
} }