字符串"false"转化为boolean值时为true引发的bug

think\Model.php

protected function writeTransform($value, $type)
protected function readTransform($value, $type)

case 'boolean':
$value = (bool) $value;
break;

改为
case 'boolean':
if ($value === "false") {
$value = false;
} else {
$value = (bool) $value;
}
break;