/**
* Replase field expression with value from $bizObj
*
* @param string $expression
* @param BizDataObj $bizObj
* @return mixed
*/
protected static function replaceFieldsExpr($expression, $bizObj)
{
$script = "";
$start = 0;
// replace [field] with field value
while (true) {
$pos0 = strpos($expression, "[", $start);
$pos1 = strpos($expression, "]", $start);
if ($pos0 === false) {
$script .= substr($expression, $start);
break;
}
if ($pos0 >= 0 && $pos1 > $pos0) {
$script .= substr($expression, $start, $pos0 - $start);
$start = $pos1 + 1;
$fieldName = substr($expression, $pos0 + 1, $pos1 - $pos0 - 1);
// get field value
$fieldValue = $bizObj->getField($fieldName)->value;
if ($fieldValue == null) {
$fieldValue = $bizObj->getFieldValue($fieldName);
}
if ($fieldValue !== null) {
$script .= $fieldValue;
} else {
//$script .= substr($expression, $pos0, $pos1 - $pos0);
//return "fail to evaluate $expression";
return "";
}
} elseif ($pos0 >= 0 && $pos1 <= $pos0) {
break;
}
}
return $script;
}
