WooCommerce单品添加图片文件上传字段

问题描述

我创建了一个自定义插件，可在 woocommerce 单个产品页面中动态显示自定义字段.字段显示、添加到购物车和添加到订单数据和电子邮件.但是，我尝试了好几天来添加文件上传字段，但没有运气.该字段显示在前端，如:

i have created a custom plugin which dynamically displays custom fields in woocommerce single product page. Fields are displayed, added to cart and added to order data and emails. However i'm trying for days to add a file upload field with no luck. The field is displayed in the frontend like:

add_action( 'woocommerce_before_add_to_cart_button', 'display_custom_fields' );
function display_custom_fields() {
?>
    <p class="form-row validate-required" id="image" >
        <span class="woocommerce-input-wrapper">
        <label for="image" class=""><?php echo $stamp_welcome_text; ?> </label> 
        
        <input type="file" name="image" accept="image/*" >
        </span>
    </p>
<?php
}

然后添加到购物车中:

add_filter( 'woocommerce_add_cart_item_data', 'add_cart_item_data', 10,3 );
function add_cart_item_data( $cart_item_data, $product_id ) {
    if ($_FILES['image'] ) {
        require_once( ABSPATH . 'wp-admin/includes/image.php' );
        require_once( ABSPATH . 'wp-admin/includes/file.php' );
        require_once( ABSPATH . 'wp-admin/includes/media.php' );
        $attachment_id = media_handle_upload( 'image', 0 );
        if ( is_wp_error( $attachment_id ) AND $_FILES['image']['size'] > 0) {
            die($attachment_id->get_error_message().'. Παρακαλώ επικοινωνήστε μαζί μας.');
        } else $cart_item_data['image'] = $attachment_id;
    }
    return $item_cart_data;
}

当然，这只是代码的一部分.其余字段工作正常.是的，如果有人想知道，我只尝试过代码本身.

Of course this is only part of the code.The rest of the fields are working perfect. Yes, i have tried the code only by itself if anyone wonders.

我一直在玩"用了几天，我不知道出了什么问题.非常感谢任何帮助:)

I have been "playing" around with it for days and i can't figure out what's wrong. Any help is highly appreciated :)

推荐答案

您可以尝试以下操作，将上传的图像数据存储为自定义购物车项目数据并将其保存为自定义订单项目元数据:

You could try the following, that will store uploaded image data as custom cart item data and save it as custom order item meta data:

// Display additional product fields (+ jQuery code)
add_action( 'woocommerce_before_add_to_cart_button', 'display_additional_product_fields', 9 );
function display_additional_product_fields(){
    ?>
    <p class="form-row validate-required" id="image" >
        <label for="file_field"><?php echo __("Upload Image") . ': '; ?>
            <input type='file' name='image' accept='image/*'>
        </label>
    </p>
    <?php
}


// Add custom fields data as the cart item custom data
add_filter( 'woocommerce_add_cart_item_data', 'add_custom_fields_data_as_custom_cart_item_data', 10, 2 );
function add_custom_fields_data_as_custom_cart_item_data( $cart_item, $product_id ){
    if( isset($_FILES['image']) && ! empty($_FILES['image']) ) {
        $upload       = wp_upload_bits( $_FILES['image']['name'], null, file_get_contents( $_FILES['image']['tmp_name'] ) );
        $filetype     = wp_check_filetype( basename( $upload['file'] ), null );
        $upload_dir   = wp_upload_dir();
        $upl_base_url = is_ssl() ? str_replace('http://', 'https://', $upload_dir['baseurl']) : $upload_dir['baseurl'];
        $base_name    = basename( $upload['file'] );

        $cart_item['file_upload'] = array(
            'guid'      => $upl_base_url .'/'. _wp_relative_upload_path( $upload['file'] ), // Url
            'file_type' => $filetype['type'], // File type
            'file_name' => $base_name, // File name
            'title'     => ucfirst( preg_replace('/.[^.]+$/', '', $base_name ) ), // Title
        );
        $cart_item['unique_key'] = md5( microtime().rand() ); // Avoid merging items
    }
    return $cart_item;
}

// Display custom cart item data in cart (optional)
add_filter( 'woocommerce_get_item_data', 'display_custom_item_data', 10, 2 );
function display_custom_item_data( $cart_item_data, $cart_item ) {
    if ( isset( $cart_item['file_upload']['title'] ) ){
        $cart_item_data[] = array(
            'name' => __( 'Image uploaded', 'woocommerce' ),
            'value' =>  str_pad($cart_item['file_upload']['title'], 16, 'X', STR_PAD_LEFT) . '…',
        );
    }
    return $cart_item_data;
}

// Save Image data as order item meta data
add_action( 'woocommerce_checkout_create_order_line_item', 'custom_field_update_order_item_meta', 20, 4 );
function custom_field_update_order_item_meta( $item, $cart_item_key, $values, $order ) {
    if ( isset( $values['file_upload'] ) ){
        $item->update_meta_data( '_img_file',  $values['file_upload'] );
    }
}

// Admin orders: Display a linked button + the link of the image file
add_action( 'woocommerce_after_order_itemmeta', 'backend_image_link_after_order_itemmeta', 10, 3 );
function backend_image_link_after_order_itemmeta( $item_id, $item, $product ) {
    // Only in backend for order line items (avoiding errors)
    if( is_admin() && $item->is_type('line_item') && $file_data = $item->get_meta( '_img_file' ) ){
        echo '<p><a href="'.$file_data['guid'].'" target="_blank" class="button">'.__("Open Image") . '</a></p>'; // Optional
        echo '<p><code>'.$file_data['guid'].'</code></p>'; // Optional
    }
}

// Admin new order email: Display a linked button + the link of the image file
add_action( 'woocommerce_email_after_order_table', 'wc_email_new_order_custom_meta_data', 10, 4);
function wc_email_new_order_custom_meta_data( $order, $sent_to_admin, $plain_text, $email ){
    // On "new order" email notifications
    if ( 'new_order' === $email->id ) {
        foreach ($order->get_items() as $item ) {
            if ( $file_data = $item->get_meta( '_img_file' ) ) {
                echo '<p>
                    <a href="'.$file_data['guid'].'" target="_blank" class="button">'.__("Download Image") . '</a><br>
                    <pre><code style="font-size:12px; background-color:#eee; padding:5px;">'.$file_data['guid'].'</code></pre>
                </p><br>';
            }
        }
    }
}

此代码位于活动子主题(或活动主题)的 functions.php 文件中.

This code goes in functions.php file of your active child theme (or active theme).

在 Woocommerce 4.3.x 版中进行测试，可与所有类型的默认 WooCommerce 产品配合使用.

Tested in Woocommerce version 4.3.x and working with default WooCommerce products from all types.

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