Retrieve JSON POST data in CodeIgniter
I have been trying to retrieve JSON data from my php file.Its giving me a hard time.This is my code
Code in my VIEW:
var productDetails = {'id':ISBNNumber,'qty':finalqty,'price':finalprice,'name':bookTitle};
var base_url = '<?php echo site_url() ?>';
$.ajax({
url: "<?php echo base_url() ?>index.php/user/Add_to_cart/addProductsToCart",
type: 'POST',
data:productDetails,
dataType:'JSON',
});
Trying to retrieve in my Controller:
echo $this->input->post("productDetails");
Outputs Nothing.
Here are my headers:
Remote Address:[::1]:80
Request URL:http://localhost/CI/index.php/user/Add_to_cart/addProductsToCart
Request Method:POST
Status Code:200 OK
Request Headersview source
Accept:application/json, text/javascript, */*; q=0.01
Accept-Encoding:gzip, deflate
Accept-Language:en-US,en;q=0.8,fr;q=0.6
Connection:keep-alive
Content-Length:52
Content-Type:application/x-www-form-urlencoded; charset=UTF-8
Cookie:ci_session=3E5SPro57IrJJkjs2feMNlmMrTqEXrTNN8UyEfleeothNnHwNxuCZDSx4a7cJZGjj7fyr2KLpj%2BPNJeGRSzSPVmcFHVEdhSk4D47ziOl4eZcTUAZlQrWa3EYIeQJVWxMpiGZS26MEfbSXNmfel9e8TcsJTreZHipvfisrJovbXEAW4Uv%2BwrJRep1KCi1MMaDCVJb9UEinRVcDtYe%2F86jhn7kOj4kraVmVzx%2FsOaO0rAxLyAUtez%2Feaa4zBwpN3Td153sAoIb3WxVHoEj2oKyH5prVHigbIhIBR6XZqjBkM6hjBuoD2OSZ2wgLbp9DEENMoqui4WYyHROBuS2DYiJajblcS0KiFga5k%2FQOODvE7p6n%2BozN5ciDliVjJ4PnJ5PD1GaPEmec5%2FbQSlOHYWZk%2F2Blzw3Nw0EtLL7wKDzzQY%3Df645c36bb3548eb8de915b73f8763d97a47783ce
Host:localhost
Origin:http://localhost
Referer:http://localhost/CI/index.php/user/view_available_books/viewAvailableBooks/5
User-Agent:Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.111 Safari/537.36
X-Requested-With:XMLHttpRequest
**Form Dataview** sourceview URL encoded
id:234
qty:1
price:0.00
name:dasdadsd2q3e!@!@@
My Response which I can See in Developer tools:
Array
(
[id] => 234
[qty] => 1
[price] => 0.00
[name] => dasdadsd2q3e!@!@@
)
But in browser, the output is nothing. I am trying to solve it for more than 4 hours now but in vain.
print_r($_POST); // outputs nothing
echo $data = file_get_contents('php://input'); //outputs nothing
echo $id = $this->input->post('productDetails');// outputs nothing
My View Code:
<script>
$('#addtoCart').on('click',function(event){
event.preventDefault();
$(this).attr('disabled',"disabled");
finalprice = $.trim($('#price').val());
finalqty = $.trim($('#quantity').val());
var productDetails = JSON.stringify({'id':ISBNNumber,'qty':finalqty,'price':finalprice,'name':bookTitle});
var base_url = '<?php echo site_url() ?>';
// console.log($);
$.ajax({
url: "<?php echo base_url() ?>index.php/user/Add_to_cart/addProductsToCart",
type: 'POST',
contentType: "application/json; charset=utf-8",
data:productDetails,
dataType:'html',
});
});
</script>
Controller Code:
function addProductsToCart(){
var_dump(json_decode(file_get_contents("php://input")));
print_r($_POST);
// $data = json_decode($_POST["productDetails"]);
// var_dump($data);
// echo $data = file_get_contents('php://input');
// print_r(json_decode($data));
// $id = $this->input->post('id');
// $qty = $this
}
I had the exact same problem. CodeIgniter doesn't know how to fetch JSON. I first thought is about the encoding Because I use fetch.js and not jQuery. Whatever I was doing I was getting an notting. $_POST was empty as well as $this->input->post(). Here is how I've solved the problem.
Send request (as object prop -- because your js lib might vary):
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify({
ready: 'ready'
})
Node: I encode my data of type
objectintojson.jQuerydoes this by itself when you set thedataType: 'JSON'option.
CodeIgniter (3.1 in my case):
$stream_clean = $this->security->xss_clean($this->input->raw_input_stream);
$request = json_decode($stream_clean);
$ready = $request->ready;
Note: You need to clean your
$this->input->raw_input_stream. You are not using$this->input->post()which means this is not done automatically by CodeIgniter.
As for the response:
$response = json_encode($request);
header('Content-Type: application/json');
echo $response;
Alternatively you can do:
echo $stream_clean;
Note: It is not required to set the
header('Content-Type: application/json')but I think it is a good practice to do so. Therequestalready set the'Accept': 'application/json'header.
So, the trick here is to use $this->input->raw_input_stream and decode your data by yourself.
I had the same problem but I found the solution.
This is the Json that I am sending [{"name":"JOSE ANGEL", "lastname":"Ramirez"}]
$data = json_decode(file_get_contents('php://input'), true);
echo json_encode($data);
This code was tested and the result is [{"name":"JOSE ANGEL","lastname":"Ramirez"}]
Although OP seems satisfied, choosen answer doesn't tell us the reason and the real solution . (btw that post_array is not an array it's an object indeed ) @jimasun's answer has the right approach. I will just make things clear and add a solution beyond CI.
So the reason of problem is ;
Not CI or PHP, but your server doesn't know how to handle a request which has an application/json content-type. So you will have no $_POST data. Php has nothing to do with this. Read more at : Reading JSON POST using PHP
And the solution is ; Either don't send request as application/json or process request body to get post data.
For CI @jimasun's answer is precise way of that.
And you can also get request body using pure PHP like this.
$json_request_body = file_get_contents('php://input');
General method I use for my Ajax Calls in CI :
JS :
post_array =
{
"myvar" : "value1",
"myvar2": "value2"
}
$.post(baseUrl + "/AjaxController/my_function", post_array,
function(data)
{
var res = jQuery.parseJSON(data);
alert(res.property);
}
Controller :
public function my_function()
{
$myvar = $this->input->post('myvar');
$myvar2 = $this->input->post('myvar2');
//Stuff
echo json_encode($myobject);
}