将自定义字段外部链接添加到存档类别页面 [英] Adding a custom field external link to archives category pages

问题描述

我有一个woocommerce网站。首先，我想在管理产品页面上添加一个自定义字段，以设置要在档案类别产品页面上使用的外部网址。

I have a woocommerce web site. First I would like to add a custom field on admin product pages to set an exernal url that I will use on my Archives category product pages.

我也希望在管理产品页面设置metabox上具有此自定义字段。但是我更改了所有档案页面上的链接的代码。

Also I would like ideally to have this custom field on my admin product pages settings metabox. But the code I have change the link on all archives pages.

现在，我的代码没有满足我的需要：

For now I have this code that is not doing what I need:

remove_action( 'woocommerce_before_shop_loop_item', 'woocommerce_template_loop_product_link_open', 10 );
add_action( 'woocommerce_before_shop_loop_item', 'mycode_woocommerce_template_loop_product_link_open', 20 );
function mycode_woocommerce_template_loop_product_link_open() {

    $url = 'https://www.some_domain.com/';

    echo '<a href="' . $url . '">';

}

如何使它在类别存档页面上工作

How can I do to make it work on category archives pages only?

谢谢

推荐答案

第一步-创建自定义字段在管理产品页面的设置metabox中：

Step1 - Creation of a custom field in the admin product pages setting metabox:

// Inserting a Custom Admin Field
add_action( 'woocommerce_product_options_general_product_data', 'add_custom_text_field_create' );
function add_custom_text_field_create() {
    echo '<div class="options_group">';

    woocommerce_wp_text_input( array(
        'type'              => 'text',
        'id'                => 'extern_link',
        'label'             => __( 'External Link', 'woocommerce' ),
        'placeholder'       => '',
        'description'       => __( 'Insert url', 'woocommerce' ),
    ) );

    echo '</div>';
}

// Saving the field value when submitted
add_action( 'woocommerce_process_product_meta', 'add_custom_field_text_save' );
function add_custom_field_text_save( $post_id ){
$wc_field = $_POST['extern_link'];
if( !empty( $wc_field ) )
    update_post_meta( $post_id, 'extern_link', esc_attr( $wc_field ) );
} 

---

步骤2-更换

---

Step 2 - Replacing the link by a custom meta value in product category archives pages only.

remove_action( 'woocommerce_before_shop_loop_item', 'woocommerce_template_loop_product_link_open');
add_action( 'woocommerce_before_shop_loop_item', 'custom_wc_template_loop_product_link_open', 10 );
function custom_wc_template_loop_product_link_open() {
    // For product category archives pages only.
    if (is_product_category()) {
        // You get here your custom link
        $link = get_post_meta(get_the_ID(), 'extern_link', true);
        echo '<a href="' . $link . '" class="woocommerce-LoopProduct-link">';
    //For the other woocommerce archives pages
    } else {
        echo '<a href="' . get_the_permalink() . '" class="woocommerce-LoopProduct-link">';
    }
}

代码进入function.php文件

此代码已通过测试并有效

This code is tested annd works

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