我正在研究WordPress插件。在插件中有一个复选框,当用户选中复选框时,一个值将通过ajax保存在数据库中,当取消选中时,该值将通过ajax从数据库中删除。所以我创建了一个复选框并编写了一个 ajax 代码。
这是我的代码:
网页代码
<?php
$cart_items = get_cart_contents();
$cart_info = array();
foreach ($cart_items as $_data) {
$prod_id = $_data['id'];
$cart_info[] = array(
'prod_id' => $prod_id,
);
}
$_cart_sr = serialize($cart_info);
?>
<label class="label" for="purchase">
<?php _e('Purchase', 'product'); ?>
<input type="checkbox" id="purchase" />
</label>
<input type="hidden" class="cart_info" value='<?php echo $_cart_sr; ?>'>
这是我的Ajax和PHP代码:
add_action('wp_ajax_values_save', 'save_check_value');
add_action('wp_ajax_nopriv_values_save', 'save_check_value');
add_action('wp_ajax_values_delete', 'delete_check_value');
add_action('wp_ajax_nopriv_values_delete', 'delete_check_value');
add_action("wp_head", "edd_gift_email_ajax");
function edd_gift_email_ajax() {
?>
<script type="text/javascript">
jQuery(document).ready(function () {
jQuery("#purchase").click(function () {
if(jQuery(this).is(":checked")) {
var cart_info_save = jQuery('.cart_info').val();
var data_save = {
action: 'values_save',
cart_info_save: cart_info_save
}
jQuery.post('<?php echo admin_url('admin-ajax.php'); ?>', data_save, function (save_result) {
alert(save_result);
});
} else {
var cart_info_delete = jQuery('.cart_info').val();
var data_delete = {
action: 'values_delete',
cart_info_delete: cart_info_delete
}
jQuery.post('<?php echo admin_url('admin-ajax.php'); ?>', data_delete, function (delete_result) {
alert(delete_result);
});
}
});
});
</script>
<?php
}
这是我的保存和删除查询
function save_check_value() {
global $wpdb;
$info_save = stripcslashes($_REQUEST['cart_info_save']);
$cart_info_un_sr_save = unserialize($info_save);
foreach ($cart_info_un_sr_save as $user_gift_cart_save) {
$prod_user_id_save = $user_cart_save['prod_id'];
echo $prod_user_id_save . " _ Add This";
//update_post_meta($prod_user_id_save, 'this_product', '1');
}
}
function delete_check_value() {
global $wpdb;
$info_delete = stripcslashes($_REQUEST['cart_info_delete']);
$cart_info_un_sr_delete = unserialize($info_delete);
foreach ($cart_info_un_sr_delete as $user_cart_delete) {
$prod_user_id_delete = $user_cart_delete['prod_id'];
echo $prod_user_id_delete . " _ Delete This";
//delete_post_meta($prod_user_id_delete, 'this_product', '1');
}
}
因此,当我选中该复选框时,警报会168 _ Add This
给我此值(这是我想要的),但是当我取消选中该复选框时,警报会0
给我此值(我希望此值168 _ Delete This
)。
我检查了每件事,但我感到困惑,为什么条件没有给我正确的价值。
任何建议。
不是直接的解决方案,但我忍不住认为有很多代码重复,可以稍微简化一下。
最初的javascript函数可能是这样的:
<script type="text/javascript">
jQuery( document ).ready(function() {
jQuery("#purchase").click( function() {
var action=jQuery(this).is(":checked") ? 'save' : 'delete';
var cart_info=jQuery('.cart_info').val();
var data={
action:'value_'+action,
cart_info:cart_info
};
jQuery.post('<?php echo admin_url('admin-ajax.php'); ?>', data, function( result ) {
alert( result );
});
}
});
});
</script>
而不是两个共享几乎相同代码的不同函数,你可以做:
<?php
function check_value() {
global $wpdb;
$info = stripcslashes( $_REQUEST['cart_info'] );
$cart_info = unserialize( $info );
/* To find the `action` analyse the following */
exit( print_r( $cart_info ) );
foreach( $cart_info as $gift ) {
list( $junk, $action ) = explode( '_', $gift['action'] );
$product = $gift['prod_id'];
echo $product . " _ ".$action." this";
switch( $action ){
case 'save':
update_post_meta($product, 'this_product', '1');
break;
case 'delete':
delete_post_meta($product, 'this_product', '1');
break;
}
}
}
?>
@RamRaider的答案很好,但是您仍然可以减少更多代码,并且可能它也适合您:)
这是jQuery:
<script type="text/javascript">
jQuery(document).ready(function() {
jQuery("#purchase").click( function() {
// Method variable will be using to define which
// function should trigger later in our PHP
var cart_method = jQuery(this).is(":checked") ? 'save' : 'delete';
var cart_info = jQuery('.cart_info').val();
var data = {
action: 'modify_cart',
cart_method: cart_method,
cart_info: cart_info
};
jQuery.post('<?php echo admin_url('admin-ajax.php'); ?>', data, function( result ) {
alert( result );
});
}
});
});
</script>
然后这是我们的PHP代码:
<?php
function modify_cart_func() {
global $wpdb;
// Get method from our jQuery
$method = $_POST['cart_method'];
$info = stripcslashes( $_REQUEST['cart_info'] );
$cart_info = unserialize( $info );
foreach( $cart_info as $gift ) {
// If method is save
if ($method == 'save') {
update_post_meta($gift['product_id'], 'this_product', 1);
// If method is delete
} else if ($method == 'delete') {
delete_post_meta($gift['product_id'], 'this_product', 1);
}
}
}
?>
最后是你的 ajax 调用:
<?php
add_action('wp_ajax_modify_cart', 'modify_cart_func');
add_action('wp_ajax_nopriv_modify_cart', 'modify_cart_func');
?>
希望这对你有意义;)
我不确定这是否会导致问题,但是如果您在未登录时调用 ajax,它会尝试使用操作调用 wp-ajax email_values_delete而不是values_delete我猜您正在尝试调用。当然,对于其他一些功能,您也可以执行该操作。
如果不是这种情况,请更改此内容
add_action('wp_ajax_nopriv_email_values_delete', 'delete_check_value');
对此
add_action('wp_ajax_nopriv_values_delete', 'delete_check_value');
您还应该在通过 wp-ajax 调用的每个 php 函数的末尾添加 wp_die()。
希望这有帮助。
编辑:
抱歉,它尝试调用values_delete但由于只定义了email_values_delete(对于未登录的用户),我猜 ajax 请求可能会返回类似 0 的内容。