Yii Dropdownlist - showing the column values from a table - php

Question

I want to add a dropdown list in my page which should show the values from a table column, How can I do this using Yii framework?
I have a table(table name is program) with columns
id, program_name, is_active
I have created a new controller and a view associated with it, I need to show a dropdown list in that view with the values populated from program_name

Answer 1

I would solve this at model level. e.g.
In Machine model, I would define a getter :
public function getCompleteMachineName ()
{
return $this->merk->name.' '.$this->name;
}
And, in your listData :
Chtml::listData(Machine::model()->with('merk')->findAll(...),
'machine_id', 'completeMachineName')

Answer 2

All you need to do is use CHtml::dropDownList, possibly with CHtml::listData to ease the process of creating a value=>display array for the <options> tag.
Example (see comments in code):
echo CHtml::dropDownList(
'somename',// for "name" attribute of <select> html tag,
// this also becomes the "id" attribute, incase you don't specify
// it explicitly in the htmlOptions array
'', // the option element that is to be selected by default
CHtml::listData( // listData helps in generating the data for <option> tags
Program::model()->findAll(), // a list of model objects. This parameter
// can also be an array of associative arrays
// (e.g. results of CDbCommand::queryAll).
'id', // the "value" attribute of the <option> tags,
// here will be populated with id column values from program table
'program_name' // the display text of the <option> tag,
// here will be populated with program_name column values from table
),
array('id'=>'someid'), // the htmlOptions array, whose values will be
// generated as html attributes of <select> and <option> tags
);
Edit Incase you don't have a CActiveRecord model for program table, you could use direct sql, replace Program::model()->findAll() in the above sample with:
Yii::app()->db->createCommand()->select('id, program_name')->from('program')->queryAll()
Also if you want to use program_name column values as the value attribute for the option tag, then you can use:
CHtml::listData($data,'program_name','program_name') // replaced the 'id' with 'program_name'