CMessageSource
| Package | system.i18n |
|---|---|
| Inheritance | abstract class CMessageSource » CApplicationComponent » CComponent |
| Implements | IApplicationComponent |
| Subclasses | CDbMessageSource, CGettextMessageSource, CPhpMessageSource |
| Since | 1.0 |
| Version | $Id: CMessageSource.php 3515 2011-12-28 12:29:24Z mdomba $ |
| Source Code | framework/i18n/CMessageSource.php |
CMessageSource is the base class for message translation repository classes.
A message source is an application component that provides message internationalization (i18n). It stores messages translated in different languages and provides these translated versions when requested.
A concrete class must implement loadMessages or override translateMessage.
A message source is an application component that provides message internationalization (i18n). It stores messages translated in different languages and provides these translated versions when requested.
A concrete class must implement loadMessages or override translateMessage.
Public Properties
| Property | Type | Description | Defined By |
|---|---|---|---|
| behaviors | array | the behaviors that should be attached to this component. | CApplicationComponent |
| forceTranslation | boolean | whether to force message translation when the source and target languages are the same. | CMessageSource |
| isInitialized | boolean | Checks if this application component bas been initialized. | CApplicationComponent |
| language | string | the language that the source messages are written in. | CMessageSource |
Public Methods
| Method | Description | Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | CComponent |
| __get() | Returns a property value, an event handler list or a behavior based on its name. | CComponent |
| __isset() | Checks if a property value is null. | CComponent |
| __set() | Sets value of a component property. | CComponent |
| __unset() | Sets a component property to be null. | CComponent |
| asa() | Returns the named behavior object. | CComponent |
| attachBehavior() | Attaches a behavior to this component. | CComponent |
| attachBehaviors() | Attaches a list of behaviors to the component. | CComponent |
| attachEventHandler() | Attaches an event handler to an event. | CComponent |
| canGetProperty() | Determines whether a property can be read. | CComponent |
| canSetProperty() | Determines whether a property can be set. | CComponent |
| detachBehavior() | Detaches a behavior from the component. | CComponent |
| detachBehaviors() | Detaches all behaviors from the component. | CComponent |
| detachEventHandler() | Detaches an existing event handler. | CComponent |
| disableBehavior() | Disables an attached behavior. | CComponent |
| disableBehaviors() | Disables all behaviors attached to this component. | CComponent |
| enableBehavior() | Enables an attached behavior. | CComponent |
| enableBehaviors() | Enables all behaviors attached to this component. | CComponent |
| evaluateExpression() | Evaluates a PHP expression or callback under the context of this component. | CComponent |
| getEventHandlers() | Returns the list of attached event handlers for an event. | CComponent |
| getIsInitialized() | Checks if this application component bas been initialized. | CApplicationComponent |
| getLanguage() | Returns the language that the source messages are written in. Defaults to application language. | CMessageSource |
| hasEvent() | Determines whether an event is defined. | CComponent |
| hasEventHandler() | Checks whether the named event has attached handlers. | CComponent |
| hasProperty() | Determines whether a property is defined. | CComponent |
| init() | Initializes the application component. | CApplicationComponent |
| onMissingTranslation() | Raised when a message cannot be translated. | CMessageSource |
| raiseEvent() | Raises an event. | CComponent |
| setLanguage() | Sets the language that the source messages are written in. | CMessageSource |
| translate() | Translates a message to the specified language. | CMessageSource |
Protected Methods
| Method | Description | Defined By |
|---|---|---|
| loadMessages() | Loads the message translation for the specified language and category. | CMessageSource |
| translateMessage() | Translates the specified message. | CMessageSource |
Events
| Event | Description | Defined By |
|---|---|---|
| onMissingTranslation | Raised when a message cannot be translated. | CMessageSource |
Property Details
forceTranslation
property
(available since v1.1.4)
public boolean $forceTranslation;
whether to force message translation when the source and target languages are the same. Defaults to false, meaning translation is only performed when source and target languages are different.
language
property
the language that the source messages are written in. Defaults to application language.
Method Details
getLanguage()
method
|
public string getLanguage()
| ||
| {return} | string | the language that the source messages are written in. Defaults to application language. |
Source Code: framework/i18n/CMessageSource.php#52 (show)
public function getLanguage()
{
return $this->_language===null ? Yii::app()->sourceLanguage : $this->_language;
}
loadMessages()
method
|
abstract protected array loadMessages(string $category, string $language)
| ||
| $category | string | the message category |
| $language | string | the target language |
| {return} | array | the loaded messages |
Source Code: framework/i18n/CMessageSource.php#46 (show)
abstract protected function loadMessages($category,$language);
Loads the message translation for the specified language and category.
onMissingTranslation()
method
|
public void onMissingTranslation(CMissingTranslationEvent $event)
| ||
| $event | CMissingTranslationEvent | the event parameter |
Source Code: framework/i18n/CMessageSource.php#124 (show)
public function onMissingTranslation($event)
{
$this->raiseEvent('onMissingTranslation',$event);
}
Raised when a message cannot be translated. Handlers may log this message or do some default handling. The CMissingTranslationEvent::message property will be returned by translateMessage.
setLanguage()
method
|
public void setLanguage(string $language)
| ||
| $language | string | the language that the source messages are written in. |
Source Code: framework/i18n/CMessageSource.php#60 (show)
public function setLanguage($language)
{
$this->_language=CLocale::getCanonicalID($language);
}
translate()
method
|
public string translate(string $category, string $message, string $language=NULL)
| ||
| $category | string | the message category |
| $message | string | the message to be translated |
| $language | string | the target language. If null (default), the application language will be used. |
| {return} | string | the translated message (or the original message if translation is not needed) |
Source Code: framework/i18n/CMessageSource.php#81 (show)
public function translate($category,$message,$language=null)
{
if($language===null)
$language=Yii::app()->getLanguage();
if($this->forceTranslation || $language!==$this->getLanguage())
return $this->translateMessage($category,$message,$language);
else
return $message;
}
Translates a message to the specified language.
Note, if the specified language is the same as
the source message language, messages will NOT be translated.
If the message is not found in the translations, an onMissingTranslation
event will be raised. Handlers can mark this message or do some
default handling. The CMissingTranslationEvent::message
property of the event parameter will be returned.
translateMessage()
method
|
protected string translateMessage(string $category, string $message, string $language)
| ||
| $category | string | the category that the message belongs to |
| $message | string | the message to be translated |
| $language | string | the target language |
| {return} | string | the translated message |
Source Code: framework/i18n/CMessageSource.php#100 (show)
protected function translateMessage($category,$message,$language)
{
$key=$language.'.'.$category;
if(!isset($this->_messages[$key]))
$this->_messages[$key]=$this->loadMessages($category,$language);
if(isset($this->_messages[$key][$message]) && $this->_messages[$key][$message]!=='')
return $this->_messages[$key][$message];
else if($this->hasEventHandler('onMissingTranslation'))
{
$event=new CMissingTranslationEvent($this,$category,$message,$language);
$this->onMissingTranslation($event);
return $event->message;
}
else
return $message;
}
Translates the specified message. If the message is not found, an onMissingTranslation event will be raised.