Save data only if given field has a valid value according to Field::hasValue() -method.

Return value

$this

Arguments

$field

String: Field name. Save if field has value.

Bool: Save, if TRUE

Full documentation

Save page, if amount has a value.

$this->get('page','order')
  ->setValue('customer',$customer->getId())
  ->setValue('amount'  ,$amount)
  ->saveIf('amount');

This is shorthand for:

$Order = $this->get('page','order')
  ->setValue('customer',$customer->getId())
  ->setValue('amount'  ,$amount);

if ( $Order->amount->hasValue() ){
    $Order->save();
}

Save changes if user is office worker:

$isOffice = $this->get('user')->isProfile('office') ? true : false ;

$Order->saveIf($isOffice);