La chiamata Ajax restituisce sempre 0

Potrestiinserire l'azione (ajaxConversion)nei tuoi datie controllare?

 jQuery.ajax({
  type:"POST",
  url: ajaxurl,
  data: {
      action: "ajaxConversion",
      amount: amountToConvert
  },
  success:function(data){
  alert(data);
  },
  error: function(errorThrown){
      alert(errorThrown);
  } 

});
 

Could you place the action (ajaxConversion) in your Data and check?

jQuery.ajax({
  type:"POST",
  url: ajaxurl,
  data: {
      action: "ajaxConversion",
      amount: amountToConvert
  },
  success:function(data){
  alert(data);
  },
  error: function(errorThrown){
      alert(errorThrown);
  } 

});

utilizzando wp_die(); allafine dellafunzione AJAX ha risoltoilproblemaperme.

adesempio

 add_action( 'wp_ajax_my_ajax_function', 'my_ajax_function' );

function my_ajax_function(){      
    echo json_encode($myvar);
    wp_die(); 
}
 

using wp_die(); at the end of AJAX function fixed the issue for me.

e.g

add_action( 'wp_ajax_my_ajax_function', 'my_ajax_function' );

function my_ajax_function(){      
    echo json_encode($myvar);
    wp_die(); 
}

Perme iltruccoera aggiungere l'azione wp_ajax_nopriv.Hotestato lo script su unbrowser quando hoeffettuato l'accesso all'amministratore di WP,quindi hoprovato lo stesso scriptin Chromee mi sono reso conto che lo scriptnonfunziona.Dopo averinserito wp_ajax_nopriv,tutto hainiziato afunzionare.:)

 add_action( 'wp_ajax_nopriv_erase_uploaded_images', 'erase_uploaded_images' );
add_action( 'wp_ajax_erase_uploaded_images', 'erase_uploaded_images' );

function erase_uploaded_images() {
    $attach_id = filter_input( INPUT_POST, 'attach_id' );
    wp_delete_attachment( $attach_id );
    if ( isset( $_SESSION['uploaded_images'] ) ) {
        $array_attachments = $_SESSION['uploaded_images'];
        if ( ( $key = array_search( $attach_id, $array_attachments ) ) !== false ) {
            unset( $array_attachments[$key] );
        }
        $_SESSION['uploaded_images'] = $array_attachments;
    }
    wp_die();
}
 

For me the trick was to add wp_ajax_nopriv action. I tested the script on one browser when I was logged in WP admin, and then I tried same script in Chrome and realized that the script doesn't work. After I put wp_ajax_nopriv, everything started to work. :)

add_action( 'wp_ajax_nopriv_erase_uploaded_images', 'erase_uploaded_images' );
add_action( 'wp_ajax_erase_uploaded_images', 'erase_uploaded_images' );

function erase_uploaded_images() {
    $attach_id = filter_input( INPUT_POST, 'attach_id' );
    wp_delete_attachment( $attach_id );
    if ( isset( $_SESSION['uploaded_images'] ) ) {
        $array_attachments = $_SESSION['uploaded_images'];
        if ( ( $key = array_search( $attach_id, $array_attachments ) ) !== false ) {
            unset( $array_attachments[$key] );
        }
        $_SESSION['uploaded_images'] = $array_attachments;
    }
    wp_die();
}

Suggerirei di utilizzare wp_send_json_success () e wp_send_json_error () sul lato server. Non devipreoccuparti di die ()ecce la variabile "status" vieneinviata automaticamente,èmoltopiùpulitain questomodo. Adesempio

 function ajaxConversion(){
    // ...
    wp_send_json_success(array(
      'amount' => $amount
    ));
}
 

Risulteràin qualcosa delgenere:

 {
 "success":true,
 "data":{"amount":125}
}
 

Quindipuoiestrarrefacilmentei valorinellatua chiamata ajax:

 jQuery.ajax({
    type       : 'post',
    data       : {
                  action: 'ajaxConversion', 
                  //nonce : ajax.nonce                              
                 },
    dataType   : 'json',
    url        : ajax.ajaxurl,
    success    : function(data){
         if(data.success) {
            alert(data.amount);                         
         } else {
            alert(data.data.message);
         }

    }
}); 
 

Un'altra cosa comunein cuimi sonoimbattuto sonoglierrori dibattituranelnome dell'azione. Dovrebberoessere wp_ajax_nopriv_ {action} o wp_ajax_ {action} dopo avereffettuato l'accesso. Adesempio,wp-ajax_nopriv,è uno che hofattopiù voltein passato.

I would recommend using wp_send_json_success() and wp_send_json_error() on server side. You don't need to worry about die() etc and the "status" variable is sent automatically, it's much cleaner this way. For example

function ajaxConversion(){
    // ...
    wp_send_json_success(array(
      'amount' => $amount
    ));
}

Will result in something like this:

{
 "success":true,
 "data":{"amount":125}
}

So then you can do easily extract the values in your ajax call:

jQuery.ajax({
    type       : 'post',
    data       : {
                  action: 'ajaxConversion', 
                  //nonce : ajax.nonce                              
                 },
    dataType   : 'json',
    url        : ajax.ajaxurl,
    success    : function(data){
         if(data.success) {
            alert(data.amount);                         
         } else {
            alert(data.data.message);
         }

    }
}); 

Another common thing i've ran into are typos in the action name. They should be wp_ajax_nopriv_{action} or wp_ajax_{action} when logged in. For example, wp-ajax_nopriv, is one I've done several times in the past.

Perme erailfatto che stavo usando returninvece di echonellamiafunzione PHP.Modificandoloin echo è stato risolto.

 function doAjax() {
    $result = getPosts();
    echo json_encode($result, true);
    die();
}
 

For me it was the fact that I was using return instead of echo in my PHP function. Changing it to echo fixed it.

function doAjax() {
    $result = getPosts();
    echo json_encode($result, true);
    die();
}