为什么我的JQuery AJAX功能无法正常工作？

Question

Trying to insert a car image from one of my databases into my webpage

get_new_car_pictures:

$make = $_REQUEST['make'];
$model = $_REQUEST['model'];

$query = "SELECT * FROM database_new WHERE make = $make AND model = $model";
$car = $db->get_row($query);

$img = $car['img_url'];


echo "<img src=".$img." />";

ajax function:

  function insertImageAJAX(){
      return $.ajax({
         type: 'GET',
         url: '/ajax/get_new_car_pictures.php',
         data: "model=" + params.model + "&make=" + params.make,
         success: function(data){
            $("#car-image".html(data));
         }
     }
  });

car-image is the div where I want the image to appear

I have tried to follow Ajax tutuorials online but for whatever reason, this is not working...

Answer 1

use concatenation on query and varchar has to be in single quotation

$query = "SELECT * FROM database_new WHERE make = '".$make."' AND model = '".$model."'";

and also fix js

function insertImageAJAX(){
  return $.ajax({
     type: 'GET',
     url: '/ajax/get_new_car_pictures.php',
     data: {'model':params.model, 'make': params.make},
     success: function(data){
        $("#car-image").html(data);
     }
 }
 });