Error in accessing post json data in yii2

Question

Am passing data to yii2 using ajax request but i keep on getting a 500 error

This is the ajax request code:

<?php 
 $script = <<< JS

     $('form#forward_pr').on('beforeSubmit', function(e){
    var keys = $('#grid').yiiGridView('getSelectedRows');
     $.post({
       url: "forwardpr", // your controller action
       dataType: 'json',
       data: {keylist: keys},
       success: function(data) {
          alert('I did it! Processed checked rows.')
       },
     error: function(err){
       console.log("server error");
       }
    });
       return false;
    }  ) ;

    JS;
    $this->registerJS($script);
 ?>

When i do console.log(keys) this returns

[0, 1]

This is my controller code:

if (Yii::$app->request->post()) {
         echo $post = json_encode($_POST['keys']);
          if (isset($_POST['keylist'])) {
                $keys = \yii\helpers\Json::decode($_POST['keylist']);
              print_r($keys);
            }else{
              echo "1";
          }

The above always executes the error part of post request, What could be wrong;

Try to change ajax url like controller/method and try once please. — Manikandan S, Aug 05 '16 at 21:27

score 14 · Accepted Answer · answered Aug 08 '16 at 09:04

You are sending your JSON as encoded (post) data body, not key value pairs. So your approach is not working this way.

There are two options to fix this:

refactor your controller into a RESTful service
in your controller use the JSON body rather than POST parameters

While the first option is preferred in the long run, the second option is pretty simple as a quick fix.

First, make sure you configure your app to parse JSON body conten. IN config.php add this to the components array:

'request' => [
    'parsers' => [
        'application/json' => 'yii\web\JsonParser',
    ]
]

Then in your controller use this to get the JSON parameters:

$model->load(Yii::$app->getRequest()->getBodyParams());

Thanks i had to change it to rest api form – Geoff Sep 07 '16 at 12:54 — Geoff, Sep 07 '16 at 12:54
Great answer!! Worked for me! – Alexandre Justino Oct 09 '17 at 00:13 — Alexandre Justino, Oct 09 '17 at 00:13

score 1 · Answer 2 · answered Sep 06 '16 at 13:38

I'm a newbie.. But I also want use checkboxcoloumns in gridview (Kartik version). 1st thing.

Instead of writing

var keys = $('#grid').yiiGridView('getSelectedRows');

I have to write

var keys = $('#w4').yiiGridView('getSelectedRows');

2nd thing. In the controller you can process the keylist, but don't try to decode it, simple use it int this way:

        $keys = $_POST['keylist'];

and it seems it works for me!

Sorry for my english..

Error in accessing post json data in yii2

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