问题
I have added Custom Post Fields (a list of check-boxes) to the Custom Taxonomy 'product_cat'.
Also I have a drop-down with this Custom Taxtonimies ('product_cat') on my Custom Post Type ('product') Add/Edit page.
How I can get a metadata from these Custom Fields with using jQuery when the Custom Taxonomy drop-down was changed?
<script type="text/javascript">
jQuery(document).ready(function() {
jQuery('#prodcatoptions').change(function() {
var productsubcut = jQuery('#prodcatoptions').val();
if ( productsubcut == '') {
} else {
var data = {
/* I don't know what I need to type here */
};
jQuery.post(ajaxurl, data, function(response){
console.log(response);
});
}
});
});
</script>
回答1:
In order to do that, you will have to issue an ajax request to the wordpress backend. For example:
In the backend you will have the following function in your functions.php file
<?php
function get_custom_meta() {
global $post; // This only works for admin site
$meta_key = $_GET['key']; # 'key' is the value of the option selected on the selected
$data = get_post_meta( $post->ID, $meta_key, true ); # true returns a single value
echo $data;
exit;
}
add_action( 'wp_ajax_get_custom_meta', 'get_custom_meta' );
?>This will return the metadata about the selected taxonomy.
Change your javascript as follows:
<script type="text/javascript">
jQuery(document).ready(function() {
jQuery('#prodcatoptions').change(function() {
var productsubcut = jQuery('#prodcatoptions').val();
if ( productsubcut == '') {
} else {
var data = {
action: 'get_custom_meta',
key: productsubcut
};
jQuery.get(ajaxurl, data, function(response){
console.log(response);
});
}
});
});
</script>来源：https://stackoverflow.com/questions/36747463/wordpress-how-to-get-metadata-of-custom-fields-from-custom-taxonomy-with-using