Edit json value before output

[Tone87]

hi,

i need to catch a json from ajax call with an hook before output, edit the json and return json edited for a translation service. 

i tried to set  return but not works in output, the output it's the same at original.. how i can return the content to output ?

this is an example: 

 

public function hookActionAjaxDieOrderControllerdisplayAjaxAddressFormBefore($params)
{ 
    $jsonOriginal  = $params['value'] ;

    $jsonEdited =  $this->prepareForTranslate($jsonOriginal); // return to page json edited
    $params['value'] = $jsonEdited;

   return $params;
}

 

public function prepareForTranslate($json) {
        
        $array= json_decode($json);
        $output = array();
        foreach($array as $key => $data)
        {
             $output[$key] = $data;
            $output['gt_translate_keys'][] = $key;
            $output['gt_translate_keys'][] = array('key'=>$key,'format' =>'html');
            
        }

          $jsonEdited =  json_encode($output);  

        return $jsonEdited
    }
    
}