InputWithNameAndProp.php
<form item="Blog" target="/blog/{id}/">
<?php
$Blog->real_title = "prop(".$Blog->title.")";
?>
<input type="text" name="title" maxlength="75">
<input type="text" name="title" prop="real_title" maxlength="70">
<input type="text" prop="real_title" maxlength="65">
</form>