wp_verfy_nonce keeps giving false - wordpress

Question

i have a form somthing like this
<form id="sample_docs" method="post" action="<?php echo admin_url('admin-ajax.php'); ?>">
<?php wp_nonce_field('nonce_action_sample_docs', 'nonce_sample_docs'); ?>
<input type="hidden" name="action" value="sample_docs">
</form>
and then i have a ajax for this like so
$('form#sample_docs').on('submit', function(e){
e.preventDefault();
id = $(this).attr('id');
url = $(this).attr('action');
$.ajax({
url: url,
type: "POST",
data: formData,
cache: false,
processData: false,
contentType: false,
async: true,
headers: {
"cache-control": "no-cache"
},
success: function(data){
data = $.parseJSON(data);
console.log('data', data);
}
});
return false;
});
and then in my php side to handle the ajax m doing this
function sample_docs()
{
var_dump(wp_verify_nonce($_POST['nonce_sample_docs'],'nonce_action_sample_docs));
die();
if(wp_verify_nonce($_POST['nonce_sample_docs'],'nonce_action_sample_docs'))
{
//do something
}
} add_action('wp_ajax_sample_docs', 'sample_docs'); add_action('wp_ajax_nopriv_sample_docs', 'sample_docs');
the wp_verify_nonce() function (in built WordPress function)
function wp_verify_nonce( $nonce, $action = -1 ) {
$nonce = (string) $nonce;
$user = wp_get_current_user();
$uid = (int) $user->ID;
if ( ! $uid ) {
/**
* Filters whether the user who generated the nonce is logged out.
*
* #since 3.5.0
*
* #param int $uid ID of the nonce-owning user.
* #param string $action The nonce action.
*/
$uid = apply_filters( 'nonce_user_logged_out', $uid, $action );
}
if ( empty( $nonce ) ) {
return false;
}
$token = wp_get_session_token();
$i = wp_nonce_tick();
// Nonce generated 0-12 hours ago
$expected = substr( wp_hash( $i . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 );
if ( hash_equals( $expected, $nonce ) ) {
return 1;
}
// Nonce generated 12-24 hours ago
$expected = substr( wp_hash( ( $i - 1 ) . '|' . $action . '|' . $uid . '|' . $token, 'nonce' ), -12, 10 );
if ( hash_equals( $expected, $nonce ) ) {
return 2;
}
/**
* Fires when nonce verification fails.
*
* #since 4.4.0
*
* #param string $nonce The invalid nonce.
* #param string|int $action The nonce action.
* #param WP_User $user The current user object.
* #param string $token The user's session token.
*/
do_action( 'wp_verify_nonce_failed', $nonce, $action, $user, $token );
// Invalid nonce
return false;
}
so when i do this i get false
i have checked if the value $_POST['nonce_sample_doc'], goes to the function
and it does i have also checked that if it goes inside the wp_verify_nonce() function and it does what i found odd was that
in side the wp_verify_nonce() function when i checked the value of $expected and $nonce it was different
so my question is how to make the value true
inside my sample_doc function

Answer 1

You have a typo in your sample_doc function, the input name is nonce_sample_docs, but you are using nonce_sample_doc in $_POST.
Fixed code:
function sample_doc()
{
var_dump(wp_verify_nonce($_POST['nonce_sample_docs'],'nonce_action_sample_docs));
die();
if(wp_verify_nonce($_POST['nonce_sample_doc'],'nonce_action_sample_docs'))
{
//do something
}
} add_action('wp_ajax_sample_doc', 'sample_doc'); add_action('wp_ajax_nopriv_sample_doc', 'sample_doc');