Adding an attribute to an ActiveRecord

Yii 1.1 General Discussion
1

Is it OK to add an attribute to an ActiveRecord model if that attribute does not correspond to a field in the database?

2

I am going to answer my own question. Yes, it’s all right to add an attribute to AR even if it does not correspond to a database field. It is called a “virtual attribute” and it is declared in the model class as follows:


public helperVariable;

It can be accessed in the following way:


$model->helperVariable

More info:

http://www.yiiframework.com/wiki/167/understanding-virtual-attributes-and-get-set-methods/

3

If that attribute is new column then what to do?.i have that problem.please help me regarding my issue.

4

you dont need to declare any variables explicitly since AR recognize it automatically. so you can use your new colum attribute without any problem like this


echo $model->new_column_attribute;

if you want to customize labels and validation rules you can provide it on its corresponding model