JModel: Difference between revisions
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{{Description:JModel}}
===Defined in===
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[[JModel]] is an abstract class which provides the basic functionality for concrete model objects in conjunction with Joomla's MVC pattern. Models that extend the JModel class are often defined in Joomla components and define the business logic of the specific component. See [[Developing_a_Model-View-Controller_Component_-_Part_1 | MVC Development in Joomla]] | |||
===The Joomla MVC Design Pattern=== | |||
Model-View-Controller (MVC) is a set of design patterns, that are used to separate the different layers of your application. | |||
* The '''View''' displays the data of the model by passing it to a template. The view object can therefore access the data of the model. Joomla implements the basic functionality in the abstract JView class. | |||
* The '''Model''' stores the data of the application, and contains the business logic. Joomla implements the basic functionality in the abstract JModel class. | |||
* The '''Controller''' handles the user requests and evokes the model and the views to change it's state. Joomla implements the basic functionality in the JController class. | |||
===Defined in=== | ===Defined in=== | ||
| Line 42: | Line 46: | ||
|Adds to the stack of model table paths in LIFO order. | |Adds to the stack of model table paths in LIFO order. | ||
|} | |} | ||
===Importing=== | ===Importing=== | ||
<source lang="php">jimport( 'joomla.application.component.model' );</source> | <source lang="php">jimport( 'joomla.application.component.model' );</source> | ||
===Examples=== | ===Examples=== | ||
=== Code Examples === | |||
<dpl> | <dpl> | ||
noresultsheader=\n | noresultsheader=\n | ||
category=JModel | category=JModel | ||
namespace=CodeExample | |||
category=ClassExample | category=ClassExample | ||
include=* | include=* | ||
format= ,,, | format= ,,, | ||
</dpl> | </dpl> | ||
Latest revision as of 01:54, 25 March 2017
JModel is an abstract class which provides the basic functionality for concrete model objects in conjunction with Joomla's MVC pattern. Models that extend the JModel class are often defined in Joomla components and define the business logic of the specific component. See MVC Development in Joomla
The Joomla MVC Design Pattern
Model-View-Controller (MVC) is a set of design patterns, that are used to separate the different layers of your application.
- The View displays the data of the model by passing it to a template. The view object can therefore access the data of the model. Joomla implements the basic functionality in the abstract JView class.
- The Model stores the data of the application, and contains the business logic. Joomla implements the basic functionality in the abstract JModel class.
- The Controller handles the user requests and evokes the model and the views to change it's state. Joomla implements the basic functionality in the JController class.
Defined in
libraries/joomla/application/component/model.php
Methods
| Method name | Description |
|---|---|
| __construct | Constructor |
| setState | Method to set model state variables |
| getState | Method to get model state variables |
| getDbo | Method to get the database connector object |
| setDbo | Method to set the database connector object |
| getName | Method to get the model name |
| getTable | Method to get a table object, load it if necessary. |
| getInstance | Returns a Model object, always creating it |
| addIncludePath | Add a directory where JModel should search for models. You may either pass a string or an array of directories. |
| addTablePath | Adds to the stack of model table paths in LIFO order. |
Importing
jimport( 'joomla.application.component.model' );
Examples
Code Examples