Custom form field to model field mapping.

MyForm.php

<?php

class MyForm extends Form{

	/**
	 * Override saveInto to allow custom form field to model field mapping.
	 */
	function saveInto($dataObject,$fieldList = null){
		$this->mapFieldNames($fieldList);
		parent::saveInto($dataObject,$fieldList);
		$this->restoreFieldNames($fieldList);
	}
	
	/**
	 * Override loadDataFrom to allow custom form field to model field mapping.
	 */
	function loadDataFrom($data,$clearMissingFields = false, $fieldList = null){
		$this->mapFieldNames($fieldList);
		parent::loadDataFrom($data,$clearMissingFields,$fieldList);
		$this->restoreFieldNames($fieldList);
	}
	
	protected function mapFieldNames($fieldList){
		if(!is_array($fieldList) || empty($fieldList))
			return false;
		//rename other fields temporarly, incase they get overwritten
		$savableFields = $this->fields->saveableFields();
		foreach($savableFields as $field){
			$field->originalFieldName = $field->Name();
			$field->setName($field->originalFieldName."_renamed");
		}
		foreach($fieldList as $formfield => $modelfield){
			if(!is_int($formfield) && isset($savableFields[$formfield]) && $field = $savableFields[$formfield]){
				$field->originalFieldName = $formfield;
				$field->setName($modelfield);
			}
		}
	}
	
	protected function restoreFieldNames($fieldList){
		if(!is_array($fieldList) || empty($fieldList))
			return false;
		foreach($this->fields->saveableFields() as $field){
			if($field->originalFieldName){
				$field->setName($field->originalFieldName);
				$field->originalFieldName = null;
			}
		}
	}

}