Joomla和JS; 将数据从表单发送到控制器

Question

I am having trouble with a form I created and trying to redirect the data someplace else by a JavaScript method that I call whenever the submit button is clicked.

The first thing that is happening, is that the form is created and filled in, then the user will click on the HTML generated button with this action in it:

onclick="javascript:saveEssayScore(<?php echo $key . "," . $pid; ?>);"

Secondly the script file is read and performed. The code is below:

<script type="text/javascript" language="javascript">
document.body.className = document.body.className.replace("modal", "");

function saveEssayScore(key, pid){

    var user_id = document.getElementById("user-"+key).value;
    console.log("user " + user_id);
    var grade = document.getElementById("grade-"+key).value;
    console.log("grade " + grade);
    var teacher_answer = document.getElementById("feedback-"+key).value;
    console.log("teacher_answer " + teacher_answer);
    var question_id = document.getElementById("question-"+key).value;
    console.log("question_id " + question_id);
    var quiz_id = document.getElementById("quiz-"+key).value;
    console.log("quiz_id " + quiz_id);

    var req = new Request.HTML({
        method: 'post',
        url: "<?php echo JURI::base();?>index.php?option=com_guru&controller=guruAuthor&task=saveFeedback&tmpl=component&format=raw",
        data: { 'pid' : pid, 'user_id' : user_id, 'grade' : grade, 'teacher_answer' : teacher_answer, 'question_id' : question_id, 'quiz_id' : quiz_id},
        onSuccess: function(response, responseElements, responseHTML){
           alert('yeyy');
        }
    }).send();
}

Now in the URL, it is read to run the method (task) saveFeedback() in the controller guruAuthor which is in the component com_guru .

The problem I am having is, how do I read the data that I just send through the HTML request? I am trying stuff like $user_id = JRequest::getVar("user_id"); But whenever I'm trying to echo or dump, it is returned to me but empty. Not the values that I am dumping in JavaScript console.log(user_id);

Answer 1

JRequest is deprecated

Use JInput instead. Read - Retrieving request data using JInput

In your mentioned code - if the controller function is being called, try this code-

$jinput = JFactory::getApplication()->input;
$user_id = $jinput->get('user_id', '', 'INT');

I hope this helps.