change attachment custom field onChange event

Question

change attachment custom field onChange event

Mindau

2022年5月21日 22:07

The form is in post creating window. Ajax is posting values, but the values doenst renews. Where can be problem ?

Ajax

    script
function dynamic_Select(field, aid, value)
  {
console.log(field, aid,value);
  jQuery.ajax({
    type: "POST",
    url: ajaxurl,
    data:{
             field:    field,
             aid:      aid, 
             value:    value,
         },

    error: function(){alert('Error!')},
    success: function(){alert(value)}     

  }); 
 }
 /script

functions.php

add_action('wp_ajax_dynselect', 'update_dynamic_select');
add_filter("attachment_fields_to_save", " update_dynamic_select", null , 2);

 function update_dynamic_select($field, $aid, $value) { 

 update_post_meta($aid, $field, $value);

}

HTML:

select aid="104" name="_image_matmenys" onchange="dynamic_Select(this.getAttribute('name'), this.getAttribute('aid') ,this.value)"
   option value="10x10"10x10/option
   option value="20x20" selected="selected"20x20/option
   option value="30x30"30x30/option
/select

Topic post-meta ajax filters hooks custom-field Wordpress

Category Web

Domain · Accepted Answer · 2014年9月11日 06:52

Replace the function into your functions.php file -

function update_dynamic_select() { 

 update_post_meta($_POST['aid'], $_POST['field'], $_POST['value']);

echo  $_POST['value'];

die();
}

Replace options in your HTML part -

<?php
$val = get_post_meta( 104, '_image_matmenys', true );

$s1 = ($val == "10x10") ? 'selected="selected"' : '';

$s2 = ($val == "20x20") ? 'selected="selected"' : '';

$s3 = ($val == "30x30") ? 'selected="selected"' : '';

?>

<option value="10x10" <?php echo $s1;?>>10x10</option>

<option value="20x20" <?php echo $s2;?>>20x20</option>

<option value="30x30" <?php echo $s3;?>>30x30</option>

EDIT:

Also, add one more hook -

add_action( 'wp_ajax_nopriv_dynselect', 'update_dynamic_select' );

and make sure that variable ajaxurl has value admin_url('admin-ajax.php') i.e. var ajaxurl = '<?php echo admin_url("admin-ajax.php");?>'

change attachment custom field onChange event

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