public function rules()
{
// NOTE: you should only define rules for those attributes that
// will receive user inputs.
return array(array('city_road, satellite, fast_track, target_postop_refraction, correction_discussed, suitable_for_surgeon_id, supervised, previous_refractive_surgery, vitrectomised_eye, eye_id, reasonForSurgery', 'safe'), array('city_road, satellite, fast_track, target_postop_refraction, correction_discussed, suitable_for_surgeon_id, supervised, previous_refractive_surgery, vitrectomised_eye, eye_id', 'required'), array('id, city_road, satellite, fast_track, target_postop_refraction, correction_discussed, suitable_for_surgeon_id, supervised, previous_refractive_surgery, vitrectomised_eye', 'safe', 'on' => 'search'));
}