- Getting Started
- Fundamentals
- Working with Forms
- Working with Databases
- Caching
- Extending Yii
- Testing
- Special Topics
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Model
A model is an instance of CModel or its child class. Models are used to keep data and their relevant business rules.
A model represents a single data object. It could be a row in a database table or a form of user inputs. Each field of the data object is represented as an attribute of the model. The attribute has a label and can be validated against a set of rules.
Yii implements two kinds of models: form model and active record. They both extend from the same base class CModel.
A form model is an instance of CFormModel. Form model is used to keep data collected from user inputs. Such data are often collected, used and then discarded. For example, on a login page, we can use a form model to represent the username and password information that are provided by an end user. For more details, please refer to Working with Form
Active Record (AR) is a design pattern used to abstract database access in an object-oriented fashion. Each AR object is an instance of CActiveRecord or its child class, representing a single row in a database table. The fields in the row are represented as properties of the AR object. Details about AR can be found in Active Record.
$Id: basics.model.txt 162 2008-11-05 12:44:08Z weizhuo $
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Total 2 comments:
#37
Magic __autoload()
by
Brabby at 1:11am on January 5, 2009.
A: for your Question look inside http://www.php.net/spl_autoload This was registred at 361:yiilite.php and 569:Yiibase.php
In the example code, I just saw "new LoginForm" inside the actionLogin() function of "controllers/SiteController.php". In the file "config/main.php", we can see the words 'import'=>array('application.models.', 'application.components.'). But how could Yii Framework load those model files?