Category:Application - Revision history

Hutchy68: cat info template bottom category

2012-11-04T17:08:48Z

cat info template bottom category

Mvangeest: Merged into Application (CMS)

2011-07-12T20:43:48Z

Merged into Application (CMS)

Mvangeest: Broke category loop

2011-06-20T14:29:37Z

Broke category loop

Chuckl at 00:00, 14 November 2010

2010-11-14T00:00:47Z

Chuckl at 23:59, 13 November 2010

2010-11-13T23:59:45Z

Chuckl at 23:56, 13 November 2010

2010-11-13T23:56:20Z

Chuckl: Accessing Application properties and methods

2010-11-13T23:52:41Z

Accessing Application properties and methods

New page

In Joomla! there are three possible applications: '''Administrator''', '''Site''', and '''Installation'''. Each application extends the abstract base class '''JApplication''' with objects '''JAdministrator''', '''JSite''', and '''JInstallation''' respectively. 

JApplication
|
|---> JAdministrator
|
|---> JSite
|
|---> JInstallation
 
The Joomla! 1.5 framework uses the global variable '''$mainframe''' to reference the [[Application]] object. '''$mainframe''' is an object of type '''JAdministrator''', '''JSite''' or '''JInstallation''' depending on the application currently running.

This provides an easy way for extensions to reference global application properties and methods without having to be concerned with which Application object is currently being referenced. When a component is operating in the backend, '''$mainframe''' will be pointing to the '''JAdministrator''' Application object. When a component is operating in the frontend, '''$mainframe''' will be pointing to the '''JSite''' Application object. During installation, '''$mainframe''' will be pointing to the '''JInstallation''' Application object.

'''JAdministrator''', JSite and '''JInstallation''' are not documented or found on api.joomla.org because they are extended classes of '''JApplication''' and not the framework. The '''JApplication''' class is documented on api.joomla.org since it is part of the core. The '''JSite''' and '''JAdministrator''' classes extend '''JApplication''' with methods and properties specific to their frontend or backend requirements.

'''NOTE:'''
The use of the global variable '''$mainframe''' has been deprecated as of 1.5 and has been removed in 1.6. 

<source lang='php'>
global $mainframe;
</source>
 
Instead, use:
 
<source lang='php'>
$app = JFactory::getApplication();
</source>
 
Please note that the variable '''''$app''''' is totally arbitrary. You could use '''''$mainframe''''' if it reduces the number of changes required throughout your code, for example:
 
<source lang='php'>
$mainframe = JFactory::getApplication();
</source>

[[Category:Application]] [[Category:Glossary]]

@@ Line 1: / Line 1: @@
-{{:Application}}
+{{cat info|{{:Application}}}}
-−
 [[Category:Framework]]

← Older revision		Revision as of 14:29, 20 June 2011
Line 34:		Line 34:
	</source>		</source>

−	~~[[Category:Application]]~~ [[Category:Framework]] [[Category:Glossary]]	+	[[Category:Framework]] [[Category:Glossary]]

← Older revision		Revision as of 00:00, 14 November 2010
Line 34:		Line 34:
	</source>		</source>

−	[[Category:Application]] [[Category:~~Development~~]] [[Category:Glossary]]	+	[[Category:Application]] [[Category:Framework]] [[Category:Glossary]]

← Older revision		Revision as of 23:59, 13 November 2010
Line 34:		Line 34:
	</source>		</source>

−	[[Category:Application]] [[Category:Glossary]]	+	[[Category:Application]] [[Category:Development]] [[Category:Glossary]]

@@ Line 14: / Line 14: @@
 '''JAdministrator''', <strong>JSite</strong> and '''JInstallation''' are not documented or found on api.joomla.org because they are extended classes of '''JApplication''' and not the framework.  The '''JApplication''' class is documented on api.joomla.org since it is part of the core.  The '''JSite''' and '''JAdministrator''' classes extend '''JApplication''' with methods and properties specific to their frontend or backend requirements.
+<br /><br /><br />
 '''NOTE:'''
 The use of the global variable '''$mainframe''' has been deprecated as of 1.5 and has been removed in 1.6.<br /><br />
+<br />
 <source lang='php'>
      global $mainframe;