[mech7]

What is the best way to set a file for validate only on create.. now I have in my model:

public function rules() {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            array('title, pdf', 'required'),
            array('title', 'length', 'max'=>125),
            array('description', 'safe'),
            array('pdf', 'file',
                'types'=> 'pdf',
                'maxSize' => 1024 * 1024 * 10, // 10MB
                'tooLarge' => 'The file was larger than 10MB. Please upload a smaller file.',
            ),
        );
    }

But this will require to upload a new file at update..

[Matt Kelliher]

You can use scenarios in your validation rules, such as

array('pdf', 'file',
    'types'=> 'pdf',
    'maxSize' => 1024 * 1024 * 10, // 10MB
    'tooLarge' => 'The file was larger than 10MB. Please upload a smaller file.',
    'on' => 'insert',
),

[Er. Shiva K. Shrestha]

Thank you, It worked for me.