/**
* public function isValid()
* Checks that the feedback recieved is valid, by checking each field.
* Returns TRUE IFF all fields are valid.
* @return boolean
*/
public function isValid()
{
$validConversationIDFlag = FALSE;
$validGradeFlag = FALSE;
$validCommentsFlag = FALSE;
$validFeedback = FALSE;
$validConversationIDFlag = $this->isConversationIDValid();
$validGradeFlag = $this->isGradeValid($this->m_feedBackObject->getGrade());
$validCommentsFlag = $this->isCommentsValid($this->m_feedBackObject->getComments());
if ($validConversationIDFlag && $validGradeFlag && $validCommentsFlag) {
$validFeedback = TRUE;
}
return $validFeedback;
}
