/**
* Returns an array containing, for each field, the arary key used for that
* field in self::$_fields.
*
* @return array
*/
static function &fieldKeys()
{
if (!self::$_fieldKeys) {
self::$_fieldKeys = array('id' => 'id', 'price_field_id' => 'price_field_id', 'name' => 'name', 'label' => 'label', 'description' => 'description', 'amount' => 'amount', 'count' => 'count', 'max_value' => 'max_value', 'weight' => 'weight', 'membership_type_id' => 'membership_type_id', 'membership_num_terms' => 'membership_num_terms', 'is_default' => 'is_default', 'is_active' => 'is_active', 'financial_type_id' => 'financial_type_id', 'deductible_amount' => 'deductible_amount');
}
return self::$_fieldKeys;
}
