Why this ajax request is successful when request method is GET but fails in POST method

Question

When I set the request type to "GET",(and also use $_GET on server side), it successfully fetches the response, but gives a 400 error, Missing required parameters: student_id when I set the type to POST.

Here's the code :

$.ajax({
        type: "GET",
        url: "?r=fees/fees/transactions",
        dataType: "json",
        data: { student_id: student_id },           
        success:function( msg ) { 
            console.log(msg);
        },
        error: function(xhr, ajaxOptions, thrownError){
            console.log("failed");
            console.log(xhr.responseText);
            console.log(ajaxOptions);
            console.log(thrownError);    
        }
});

Here is the request URL when I set the request method to GET:

http://localhost/demo.git/index.php?r=fees/fees/transactions&_csrf=bEJJWVowdl8jBwQjaUMsAA52eT8MXBMLJigwHTxeKSlVKyxoD2o5KQ%3D%3D&student_id=10115".

why doesn't this work when I set the above request type to POST and receive the variable on server side by POST method?

Here is the server side action (I am using Yii2 MVC framework)

public function actionTransactions($student_id){
    $student_id = $_POST['student_id'];
        ...
        ...   
    echo json_encode($response);

}

You Can use $_REQUEST if you dont know the method is $_GET or $_POST — Yasin Patel, Jul 21 '17 at 13:11
@YasinPatel, that does not relates at all to what I asked? Did I say that I don't know the method? I am working on localhost you see. I know by which method I am calling. — Ramesh Pareek, Jul 21 '17 at 13:13
Its not fare, why are you give down vote. I solved your problem. — Anand Pandey, Jul 21 '17 at 13:16
Mat hata chutiye mujhe koi fark nhi padta me to bas help karta hu logo ki kuch tujh jaise bhi milte hai or aage bhi milenge or downvote kar de mere baap ka kya jaa rha. HAHAHA — Anand Pandey, Jul 22 '17 at 05:24

score 2 · Accepted Answer · answered Jul 21 '17 at 14:55

2

Your function need param $student_id from GET method. If youre using AJAX to send request, using data: { 'student_id': student_id }, - it will be added to your URL where AJAX is sent.

If you want to use POST method, you have to modify your URL:

url: "?r=fees/fees/transactions?student_id=" + student_id,

And remove data key.

Second solution is to remove $student_id param from your actionTransactions, then system will accept requests without $student_id in GET, but you will have to ensure, that it's in $_REQUEST.

answered Jul 21 '17 at 14:55

Yupik

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Though the answer was a bit late, as I already figured it out, this is definitely a complete solution. Also, don't you think the question deserves an upvote? If you do please upvote, because personally I think that I made every effort to clearly and completely describe the problem which can be reproduced. and documentation about this is also not so common, at least I could not find. – Ramesh Pareek Jul 21 '17 at 16:34

Why this ajax request is successful when request method is GET but fails in POST method

1 Answers1