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+--- Thread: is_ajax_request does not recognized XMLHttpRequest (/showthread.php?tid=71874)
is_ajax_request does not recognized XMLHttpRequest - tecthon - 10-04-2018
Dear All,
I got issue, below php code is in controller, when i do jquery ajax requests it works but when i make a call with JS Code mentioned below it wont work. if remove (!$this->input->is_ajax_request()) check. below js code work. please anyone can suggest me what i am doing wrong or what i should do to keep (!$this->input->is_ajax_request())check, this check is important.
PHP Code:
if (!$this->input->is_ajax_request()) {
redirect('backend');
exit();
}else{
// Continue to process
}
Javascript
Code:
var ajax = new XMLHttpRequest();
ajax.open("POST", ajaxUrl, true);
ajax.onreadystatechange = function () {
if (this.readyState == 4) {
if (this.status == 200) {
console.log(this.response);
console.log(typeof this.response); // should be a blob
var blob = new Blob([this.response], {type: "application/octet-stream"});
//saveAs(blob, file_name);
} else if (this.responseText != "") {
console.log(this.responseText);
}
} else if (this.readyState == 2) {
if (this.status == 200) {
this.responseType = "blob";
} else {
this.responseType = "text";
}
}
};
ajax.send(null);RE: is_ajax_request does not recognized XMLHttpRequest - InsiteFX - 10-04-2018
Not sure what JavaScript or framework your using some do not send the HTTP_X_REQUESTED_WITH header. jQuery doe's send it.
You can try this and see what you get this is the old way that we use to do it.
Code:
define('IS_AJAX', isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
if(IS_AJAX) {
... it's an AJAX request so do something ...
}
else {
... it's not an AJAX request so do something else ...
}You can place the define in your ./application/config/constants.php file or were you want.
You may need to send the header yourself.
RE: is_ajax_request does not recognized XMLHttpRequest - jreklund - 10-04-2018
You need to manually specify the requested-with method with plain JS. jQuery and other libraries does it for it like InsiteFX said.
Code:
//Send the proper header information along with the request
ajax.setRequestHeader("X-Requested-With",'xmlhttprequest');RE: is_ajax_request does not recognized XMLHttpRequest - dave friend - 10-04-2018
(10-04-2018, 10:02 AM)InsiteFX Wrote: You can try this and see what you get this is the old way that we use to do it.
[code]define('IS_AJAX', isset($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
The above (more or less) what CI_Input does
From /system/core/Input.php
PHP Code:
public function is_ajax_request()
{
return ( ! empty($_SERVER['HTTP_X_REQUESTED_WITH']) && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest');
}
I think there is something in the JavaScript that is producing a non-standard XMLHttpRequest.