I am trying to write a WP function to work with both ajax and direct calls, something like this:
PHP
function some_function($var){
$var = !empty($var) ? $var : $_POST['var'];
echo $var;
//or even
$var = null;
echo 'something';
if(!empty($_POST['action'])) wp_die();
}
AJAX CALL
let ajaxurl = '███';
let data = {'action': 'somefunction','var':'foo')};
$.post(ajaxurl, data, function(response) {console.log(response);});
WP use
add_action( 'wp_ajax_somefunction', 'some_function',10,1);
add_action( 'wp_ajax_nopriv_somefunction', 'some_function',10,1);
Another WP use
some_function('bar');
However, any time I place $var as an accepted function argument, some_function($var), my ajax calls start returning a 500 error. So, something like this
function some_function(){
$var = !empty($var) ? $var : $_POST['var'];
echo $var;
}
works for ajax.
I tried looking up wp ajax & arguments, but the search results are always about the variables we pass through ajax, not the callback function arguments. The only thing I learned is that we have to add a number of accepted arguments into add_action()
What am I doing wrong?
Thank you.
...P.S. I found a funny workaround:
function some_function_ajax(){
$var = $_POST['var'];
some_function($var);
}
function some_function($var){
echo $var;
} // =)
but still, what is the right way?
Jackob Peattie, thanks for the hint! So, the working code looks like this, then:
//JS (jQuery):
let data = {
'action' : 'func',
'var' : 'something',
'nonce' : nonce
};
$.post(ajaxurl, data);
//add_action:
add_action( 'wp_ajax_func', 'func_ajax');
add_action( 'wp_ajax_nopriv_func', 'func_ajax');
//PHP:
function func_ajax(){
//verify nonce
if(empty($_POST['nonce']) || !wp_verify_nonce( $_POST['nonce'], 'myajax-nonce' ) ) wp_die();
$var = $_POST['var'];
func($var);
//end ajax call
wp_die();
}
function func($var){
echo $var;
}
I am trying to write a WP function to work with both ajax and direct calls, something like this:
PHP
function some_function($var){
$var = !empty($var) ? $var : $_POST['var'];
echo $var;
//or even
$var = null;
echo 'something';
if(!empty($_POST['action'])) wp_die();
}
AJAX CALL
let ajaxurl = '███';
let data = {'action': 'somefunction','var':'foo')};
$.post(ajaxurl, data, function(response) {console.log(response);});
WP use
add_action( 'wp_ajax_somefunction', 'some_function',10,1);
add_action( 'wp_ajax_nopriv_somefunction', 'some_function',10,1);
Another WP use
some_function('bar');
However, any time I place $var as an accepted function argument, some_function($var), my ajax calls start returning a 500 error. So, something like this
function some_function(){
$var = !empty($var) ? $var : $_POST['var'];
echo $var;
}
works for ajax.
I tried looking up wp ajax & arguments, but the search results are always about the variables we pass through ajax, not the callback function arguments. The only thing I learned is that we have to add a number of accepted arguments into add_action()
What am I doing wrong?
Thank you.
...P.S. I found a funny workaround:
function some_function_ajax(){
$var = $_POST['var'];
some_function($var);
}
function some_function($var){
echo $var;
} // =)
but still, what is the right way?
Jackob Peattie, thanks for the hint! So, the working code looks like this, then:
//JS (jQuery):
let data = {
'action' : 'func',
'var' : 'something',
'nonce' : nonce
};
$.post(ajaxurl, data);
//add_action:
add_action( 'wp_ajax_func', 'func_ajax');
add_action( 'wp_ajax_nopriv_func', 'func_ajax');
//PHP:
function func_ajax(){
//verify nonce
if(empty($_POST['nonce']) || !wp_verify_nonce( $_POST['nonce'], 'myajax-nonce' ) ) wp_die();
$var = $_POST['var'];
func($var);
//end ajax call
wp_die();
}
function func($var){
echo $var;
}
1 Answer
Reset to default 1No arguments are passed to the AJAX callback function. Variables passed with the request are available in $_GET or $_POST. So if your function expects an argument, it can’t be used as the hooked callback directly.
Your workaround is the correct way to use a function that accepts arguments in an AJAX request.