Question

I have three const in controller:

const TEST1 = 1;
const TEST2 = 2;
const TEST3 = 3;

How I can call these values in view as a dropDown?

Answer 1

If you will get messy with all constants you have in diferent models, you can use code snippet I wrote to manage them. Please see Managing constants easily (yii wiki article)

I will copy just function and one example, but for full wiki and details please go visit link above.

Put this method in parent class or your model class directly:

class ActiveRecord extends CActiveRecord {
    const TEST_1 = 1;
    const TEST_2 = 2;
    const TEST_3 = 3;


    /*
        Get class constants by token.
        If you set constants with same prefix, like:
        TEST_1
        TEST_2
        TEST_3

        , you can get it by calling
        Class::getConstants('TEST_');
    */
    public static function getConstants($token,$objectClass) {
        $tokenLen = strlen($token);

        $reflection = new ReflectionClass($objectClass); //php built-in 
        $allConstants = $reflection->getConstants(); //constants as array

        $tokenConstants = array(); 
        foreach($allConstants as $name => $val) {
        if ( substr($name,0,$tokenLen) != $token ) continue;
        $tokenConstants[ $val ] = $val;
        }
        return $tokenConstants;
    }

}

And after that you can use this method to get specific constants (from one group) in array:

self::getConstants('TEST_',__CLASS__); //inside same class
ActiveRecord::getConstants('TEST_','ActiveRecord'); //outside, somewhere else in view or controller

For dropdown it would be looking as (if MyModel have parent ActiveRecord)

echo CHtml::dropDownList('name','selected',
    MyModel::getConstants('TEST_','MyModel'),
    array(// for htmlOptions
    )
);

Now you can forget to edit all places in code if you adding new constant. It will automaticaly added to all your dropdowns or whatever.