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AJAX Post to PHP with JSON Object containing a File


AJAX Post to PHP with JSON Object containing a File

By : user2949644
Date : November 17 2020, 01:00 AM
Hope this helps $_FILES superglobal will only be created when multipart/form-data content-type is set for the POST and would include the actual file being POSTed, not a local reference to that file. Instead you are sending a JSON request (hopefully with an appropriate application/json content-type). This is not going to populate $_FILES. Unless your receiving script has the ability to take the path information provided and access the file in question, your POSTing script will actually need to send the file as part of the POST.
Uploading files via AJAX is best handled using specific AJAX upload libraries that are meant to do this, which basically utilize workarounds to the fact that you really can't POST a file asynchronously natively in browsers.
code :


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Creating JSON object from DB results to post back into jquery UI Dialog, using ajax post method

Creating JSON object from DB results to post back into jquery UI Dialog, using ajax post method


By : Tonmoy
Date : March 29 2020, 07:55 AM
Any of those help You need to pass in your $.ajax the id of the category you want to detail.
code :
$.ajax({
    type:"POST",
    url:"/includes/json.php",
    data:['cat_id': cat_id], // passing var cat_id from the link... 
<?php
header('X-Robots-Tag: noindex, noarchive');
$a = session_id();
if(empty($a)) session_start();
if($_SERVER['HTTP_REFERER']){

  $cat_id = $_POST['cat_id']; // Grab the Id of the category you want to detail...

   // Here you have to fetch the info from the DB...
   $samples = '... WHERE cat_id = :cat'; // Create the sql here!
   $res = $db->prepare($samples);
   $res->execute(array(':cat' => $cat_id));
   $count = $res->rowCount();
   $htmlToDisplay = '';
   if($count > 0) 
   while ($row = $res -> fetch()){
    $htmlToDisplay += $row['...']; // format yout output...
  }

  $resp_dialog = array(
    'status' => 1,
    'html' => $htmlToDisplay,
  );
  echo json_encode($resp_dialog);
  }else{
      header('HTTP/1.1 403 Forbidden');
      exit;
      }
?>
echo "<div class='sample'>";
/* ... */
// Passing $row[id] to user_notice() function!
echo "<br /><a class=\"button\" onClick=\"user_notice(this,". $row[id] ."); return false;\">More Details</a>";
echo "</div>";
function user_notice(a,cat_id){ // New parameter cat_id!
    download_link=$(a).attr("href");
    $.ajax({
        type:"POST",
        url:"/includes/json.php",
        data:{ cat_id: cat_id }, // Passing cat_id to json.php... don't forget to pass your other variables
        /* ... */
JSON to MVC Object from an Ajax Post

JSON to MVC Object from an Ajax Post


By : Lalie
Date : March 29 2020, 07:55 AM
To fix this issue I have this json array-ish variable which gets values from a table: , You ajax options needs to include
code :
type: 'POST'
$.ajax({
    url: '/Ajax/SendGrades',
    type: 'POST', // add this
    data: JSON.stringify(data),
    contentType: "application/json; charset=utf-8",
    success: function (dt) {
        console.log(dt);
    }
});
public ActionResult SendGrades(List<grade> model)
sending JSON object along with file using FormData in ajax call and accessing the json object in PHP

sending JSON object along with file using FormData in ajax call and accessing the json object in PHP


By : Kiron Bikash Rudra
Date : March 29 2020, 07:55 AM
wish of those help Firstly, note that you can only append binary data or a string through the FormData.append() method. Providing an object as you are means that toString() will be called on it, so the value will actually become "[object Object]".
To fix this you'll need to manually JSON.stringify the object before you append() it:
code :
let obj = {
    'label1':'value1'
};
form_data.append('file', file_data);
form_data.append('json', JSON.stringify(obj));
form_data.append('file', file_data);
form_data.append('label1', 'value1');
form_data.append('foo', 'bar');
var label = $_POST['label'];
var foo = $_POST['foo'];
Can I use AJAX 'POST' to post data to a JSON file on my server?

Can I use AJAX 'POST' to post data to a JSON file on my server?


By : Milad
Date : March 29 2020, 07:55 AM
it fixes the issue Ajax file directly can not write to a file in your server. But you can achieve this by creating simple php script say savejson.php on your server.
Your form:
JSON object in AJAX 'post' request

JSON object in AJAX 'post' request


By : user309432
Date : March 29 2020, 07:55 AM
it fixes the issue If the API really supports JSON parameters, you should set the correct Content-type::
code :
request2.setRequestHeader("Content-type", "application/json");
var dataArray = [];
myNewData.forEach(obj => Object.keys(obj).forEach(key => dataArray.push(encodeURIComponent(key + "[]") + "=" + encodeURIComponent(obj[key]))));
request2.send(dataArray.join("&");
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