基于Woocommerce中产品类别的条件自定义结帐字段 [英] Conditional custom checkout fields based on product category in Woocommerce

问题描述

我正在将woocommerce用于一个非营利性网站，该网站出售课程门票和活动门票。当某人报名参加课程时，需要列出其紧急联系信息并同意免除责任。当他们购买活动门票时，非营利组织不需要紧急联系信息或责任解除。所以...他们只希望这些字段出现在woocommerce结帐上，但前提是该人正在使用课程票进行结帐。

I am using woocommerce for a site for a nonprofit that sells tickets to classes and tickets to events. When someone is signing up for a class then need to list their emergency contact information and agree to a liability release. When they are buying a ticket to an event the nonprofit doesn't need the emergency contact info or the liability release. So... they want those fields to appear on the woocommerce checkout only on the condition that the person is checking out with a ticket for a class. Make sense?

我想出了如何添加自定义字段，几个月前，当他们首次将类添加到网站时，他们就发布了自定义责任。我在woocommerce中创建了一个类产品类别，并创建了一个功能来测试购物车中该类别中的任何产品，因此我可以有条件地显示这些字段。

I figured out how to add the custom fields and the custom liability releases a few months ago when they first added the classes to the website. I created a "class" product category in woocommerce and a function to test for any products in the shopping cart that are in that category, so I can conditionally show the fields.

所有这些函数都在我的functions.php文件中，现在我正在运行条件语句来检查每个函数中的类类别。我需要帮助来学习如何一次检查类类别，然后运行显示字段，验证字段，将数据添加到数据库并生成新订单电子邮件的功能。

All of these functions are in my functions.php file and I right now I am running the conditional statement to check for the "class" category in each of the functions. I need help learning how to check for the "class" category once, then run the functions that display the fields, validated the fields, add the data to the database and generate the new order emails. Make sense?

这是我目前的状态：

// Add fields for Emergency Contact & Medical Information to the checkout page
add_action('woocommerce_after_order_notes', 'customise_checkout_field');

function customise_checkout_field($checkout)
{

    // Check to see if there is a class in the cart
    // function is at the end
    $class_in_cart = is_conditional_product_in_cart( 'class' );

    // There is a class in the cart so show additional fields
    if ( $class_in_cart === true ) {

    echo '<div id="customise_checkout_field"><h3>' . __('Emergency Contact & Medical Information') . '</h3>';
    woocommerce_form_field('emergency_contact', array(
        'type' => 'text',
        'class' => array(
            'emergency-contact form-row-wide'
        ) ,
        'label' => __('Emergency Contact') ,
        'placeholder' => __('Please enter first & last name') ,
        'required' => true,
    ) , $checkout->get_value('emergency_contact'));
    woocommerce_form_field('emergency_contact_relationship', array(
        'type' => 'text',
        'class' => array(
            'emergency-contact-relationship form-row-wide'
        ) ,
        'label' => __('What is your relationship with this person?') ,
        'placeholder' => __('Example: Mother') ,
        'required' => true,
    ) , $checkout->get_value('emergency_contact_relationship'));
    woocommerce_form_field('emergency_contact_phone', array(
        'type' => 'text',
        'class' => array(
            'emergency-contact-phone form-row-wide'
        ) ,
        'label' => __('What is their phone number?') ,
        'placeholder' => __('[phone]') ,
        'required' => true,
    ) , $checkout->get_value('emergency_contact_phone'));
    woocommerce_form_field('medical_medicine', array(
        'type' => 'textarea',
        'class' => array(
            'medical-medicine form-row-wide'
        ) ,
        'label' => __('Do you have any medical conditions and are you taking any medications we need to be aware of?') ,
        'placeholder' => __('If not please write in "none"') ,
        'required' => true,
    ) , $checkout->get_value('medical_medicine'));
    echo '</div>';
    }
}

// Process emergency contact fields

add_action('woocommerce_checkout_process', 'custom_checkout_fields_process');

function custom_checkout_fields_process() {
    // Check to see if there is a class in the cart
    $class_in_cart = is_conditional_product_in_cart( 'class' );

    // There is a class in the cart so show additional fields
    if ( $class_in_cart === true ) {

        // if the field is set, if not then show an error message.
        if (!$_POST['emergency_contact']) wc_add_notice(__('Please list an emergency contact.') , 'error');
        if (!$_POST['emergency_contact_relationship']) wc_add_notice(__('Please indicate your relationship with your emergency contact.') , 'error');
        if (!$_POST['emergency_contact_phone']) wc_add_notice(__('Please list a phone number for your emergency contact.') , 'error');
        if (!$_POST['medical_medicine']) wc_add_notice(__('Please list any medications or write in "none".') , 'error');
    }
}

// Add emergency contact information to the database

add_action('woocommerce_checkout_update_order_meta', 'custom_checkout_fields_update_order_meta');

function custom_checkout_fields_update_order_meta($order_id) {
    // Check to see if there is a class in the cart
    $class_in_cart = is_conditional_product_in_cart( 'class' );

    // There is a class in the cart so show additional fields
    if ( $class_in_cart === true ) {
        if (!empty($_POST['emergency_contact'])) {
            update_post_meta($order_id, 'emergency_contact', sanitize_text_field($_POST['emergency_contact']));
        }
        if (!empty($_POST['emergency_contact_relationship'])) {
            update_post_meta($order_id, 'emergency_contact_relationship', sanitize_text_field($_POST['emergency_contact_relationship']));
        }
        if (!empty($_POST['emergency_contact_phone'])) {
            update_post_meta($order_id, 'emergency_contact_phone', sanitize_text_field($_POST['emergency_contact_phone']));
        }
        if (!empty($_POST['medical_medicine'])) {
            update_post_meta($order_id, 'medical_medicine', sanitize_text_field($_POST['medical_medicine']));
        }
    }
}

// Add the emergency contact fields to order email

add_filter( 'woocommerce_email_order_meta_keys', 'my_custom_checkout_field_order_meta_keys' );
function my_custom_checkout_field_order_meta_keys( $keys ) {
    // Check to see if there is a class in the cart
    $class_in_cart = is_conditional_product_in_cart( 'class' );

    // There is a class in the cart so show additional fields
    if ( $class_in_cart === true ) {
        echo '<h2>Emergency Contact & Medical Information:</h2>';
        $keys['Emergency Contact'] = 'emergency_contact';
        $keys['Emergency Contact Relationship'] = 'emergency_contact_relationship';
        $keys['Emergency Contact Phone'] = 'emergency_contact_phone';
        $keys['Medical Conditions & Medications'] = 'medical_medicine';
        return $keys;
    } // end class in cart condition
}

/*-----------------------------------------------------------------------------------------------------------------------------------------------*/

// Add custom checkboxes to woocommerce checkout page for Photo Release, Mailing List & Release of Liability
// add_action( 'woocommerce_after_order_notes', 'custom_checkout_fields' );
add_action( 'woocommerce_review_order_before_submit', 'custom_checkout_fields' );
function custom_checkout_fields() {
    echo '<div id="custom_checkout_fields">
    <h3>Mailing Lists</h3>
    <p>Mailing List boilerplate';

    woocommerce_form_field( 'mailing_consent', array(
        'type'      => 'checkbox',
        'class'     => array('input-checkbox'),
        'label'     => __('Please add me to Nonprofit\'s electronic and paper mailing lists.'),
        'required'  => false,
        'clear'     => true,
        'default'   => 1 //This will pre-select the checkbox
    ),  WC()->checkout->get_value( 'mailing_consent' ) );

    // Check to see if there is a class in the cart
    $class_in_cart = is_conditional_product_in_cart( 'class' );

    // There is a class in the cart so show additional fields
    if ( $class_in_cart === true ) {

        echo '<h3>Photo Release</h3>
        <p>Photo Release Boilerplate</p>';

        woocommerce_form_field( 'photo_consent', array(
            'type'      => 'checkbox',
            'class'     => array('input-checkbox'),
            'label'     => __('I agree to the Photo Release as outlined above.'),
            'required'  => false,
            'clear'     => true,
            'default'   => 1 //This will pre-select the checkbox
        ),  WC()->checkout->get_value( 'photo_consent' ) );

        echo '<h3>Release of Liability</h3>
        <p>Release of Liability Boilerplate</p>';

        woocommerce_form_field( 'liability_release', array(
            'type'      => 'checkbox',
            'class'     => array('input-checkbox'),
            'label'     => __('I agree to the Photo Release as outlined above.'),
            'required'  => true,
            'clear'     => true,
            'default'   => 1 //This will pre-select the checkbox
        ),  WC()->checkout->get_value( 'liability_release' ) );

    } // end class in cart condition

    echo '</div>';
}

// Show notice if customer doesn't check the Release of Liability checkbox
add_action( 'woocommerce_checkout_process', 'liability_release_not_given' );

function liability_release_not_given() {
    // Check to see if there is a class in the cart
    $class_in_cart = is_conditional_product_in_cart( 'class' );

    // There is a class in the cart so show additional fields
    if ( $class_in_cart === true ) {
        if ( ! (int) isset( $_POST['liability_release'] ) ) {
            wc_add_notice( __( 'You must agree to the Release of Liability to register for this class.  Please contact us with any questions.' ), 'error' );
        }
    } // end class in cart condition
}

// Save the custom checkout field in the order meta, when checkbox has been checked
add_action( 'woocommerce_checkout_update_order_meta', 'custom_checkout_field_update_order_meta', 10, 1 );
function custom_checkout_field_update_order_meta( $order_id ) {

    if ( ! empty( $_POST['mailing_consent'] ) )
        update_post_meta( $order_id, 'mailing_consent', $_POST['mailing_consent'] );

    if ( ! empty( $_POST['photo_consent'] ) )
        update_post_meta( $order_id, 'photo_consent', $_POST['photo_consent'] );

    if ( ! empty( $_POST['liability_release'] ) )
        update_post_meta( $order_id, 'liability_release', $_POST['liability_release'] );
}

/*-----------------------------------------------------------------------------------------------------------------------------------------------*/

// Display custom field results on the order edit page (backend)
// for various liability fields

add_action( 'woocommerce_admin_order_data_after_billing_address', 'display_custom_field_on_order_edit_pages', 10, 1 );
function display_custom_field_on_order_edit_pages( $order ){

    $mailing_consent = get_post_meta( $order->get_id(), 'mailing_consent', true );
    if( $mailing_consent == 1 )
        echo '<p>' . $order->billing_first_name . ' ' . $order->billing_last_name . ' agreed to the be added to Nonprofit\'s mailing lists.</p>';

    $photo_consent = get_post_meta( $order->get_id(), 'photo_consent', true );
    if( $photo_consent == 1 )
        echo '<p>' . $order->billing_first_name . ' ' . $order->billing_last_name . ' agreed to the Photo Release.</p>';

    $liability_release = get_post_meta( $order->get_id(), 'liability_release', true );
    if( $liability_release == 1 )
        echo '<p>' . $order->billing_first_name . ' ' . $order->billing_last_name . ' agreed to the Release of Liability.</p>';
}


/**
 * Check if Class is In cart
 *
 * https://wordimpress.com/create-conditional-checkout-fields-woocommerce/
 * https://businessbloomer.com/woocommerce-check-product-category-cart/
 *
 * @param $product_id
 *
 * @return bool
 */
function is_conditional_product_in_cart( $category_name ) {
    //Check to see if user has a class in their cart
    global $woocommerce;

    //flag no class in cart
    $class_in_cart = false;

    foreach ( $woocommerce->cart->get_cart() as $cart_item_key => $values ) {
        $_product = $values['data'];

    //  if ( $_product->cat === $category_id ) {
        //  //class is in cart!
            //$class_in_cart = true;

        if (has_term ( $category_name, 'product_cat', $_product->get_id() ) ) {
            //class is in cart!
            $class_in_cart = true;
        }
    }

    return $class_in_cart;

}

如您所知，我从各种来源将其拼凑而成在网络上，我意识到这有点混乱。当前条件语句：

As you can probably tell I pieced this together from various sources on the web and I realize it is a bit of a mess. Currently the conditional statement:

// Check to see if there is a class in the cart
$class_in_cart = is_conditional_product_in_cart( 'class' );

// There is a class in the cart so show additional fields
if ( $class_in_cart === true ) {

每个功能重复一次。我知道这样做效率不高，但不确定如何解决。我想做的是：

Is repeated for each function. I know this isn't efficient but I'm not sure how to fix it. What I would like to do is this:

1. 测试类别类别中的产品


2. 如果为 class，则运行所有功能以显示和处理紧急联系人字段以及照片发布和责任发布字段


3. 显示加入邮件列表协议，无论是否无论如何，购物车中都有一个类，并处理该字段。

我尝试将所有内容包装在另一个函数中，但这破坏了代码。也许最好将其移动到插件中？

I tried just wrapping everything in another function but that broke the code. Maybe it would be best to move this into a plugin?

感谢您提供任何想法和帮助。

Thanks for any ideas and help you can give.

推荐答案

首先，您使用的条件函数代码确实很旧，过时并且无法正常工作当购物车商品是产品变体（因此，可变商品）。以下是紧凑而有效的条件函数…
它可以与任何产品类别术语ID，段，名称或值数组一起使用：

First the conditional function code that you are using is really old, outdated and will not work when cart items are product variations (so for variable products). Here below is the compact and working conditional function…
It can work with any product category term ID, slug, name or an array of values:

function is_product_cat_in_cart( $categories ) {
    foreach ( WC()->cart->get_cart() as $cart_item ) {
        if (has_term ( $categories, 'product_cat', $cart_item['product_id'] ) )
            return true;
    }
    return false;
}

现在，其余的代码有很多错误或几乎没有错误。

Now the rest of your code has a lot of mistakes or little errors.

它也使用过时或不推荐使用的钩子，例如：

It also use outdated or deprecated hooks like:

• woocommerce_checkout_update_order_meta 取而代之的是一个很合适的钩子。


• woocommerce_email_order_meta_keys 已被弃用。

• woocommerce_checkout_update_order_meta replaced by a much appropriated hook.
• woocommerce_email_order_meta_keys is deprecated since a lot of time.

您也可以在相同的挂钩函数中将一些代码合并在一起。

You can also merge some code together in the same hooked functions.

您不需要到处都有条件函数。

You don't need the conditional function everywhere. It's just needed for checkout fields conditional display.

这是您重新访问的代码（适用于woocommerce 3及更高版本）：

Here is your revisited code (for woocommerce version 3 and above):

// Add fields for Emergency Contact & Medical Information to the checkout page
add_action('woocommerce_after_order_notes', 'customise_checkout_field', 20, 1 );
function customise_checkout_field( $checkout ){
    $domain = 'woocommerce';

    // There is a class in the cart so show additional fields
    if ( is_product_cat_in_cart( 'class' ) ):

    echo '<div id="customise_checkout_field">
    <h3>' . __( 'Emergency Contact & Medical Information', $domain ) . '</h3>';

    woocommerce_form_field( 'emergency_contact', array(
        'type'          => 'text',
        'class'         => array( 'emergency-contact form-row-wide' ),
        'label'         => __( 'Emergency Contact', $domain ) ,
        'placeholder'   => __( 'Please enter first & last name', $domain ),
        'required'      => true,
    ), $checkout->get_value('emergency_contact') );

    woocommerce_form_field( 'emergency_contact_relationship', array(
        'type'          => 'text',
        'class'         => array( 'emergency-contact-relationship form-row-wide' ),
        'label'         => __( 'What is your relationship with this person?', $domain ),
        'placeholder'   => __( 'Example: Mother', $domain ) ,
        'required'      => true,
    ), $checkout->get_value('emergency_contact_relationship') );

    woocommerce_form_field( 'emergency_contact_phone', array(
        'type'          => 'text',
        'class'         => array( 'emergency-contact-phone form-row-wide' ),
        'label'         => __( 'What is their phone number?', $domain ),
        'placeholder'   => __( '[phone]', $domain ),
        'required'      => true,
    ), $checkout->get_value('emergency_contact_phone') );

    woocommerce_form_field( 'medical_medicine', array(
        'type'          => 'textarea',
        'class'         => array( 'medical-medicine form-row-wide' ) ,
        'label'         => __( 'Do you have any medical conditions and are you taking any medications we need to be aware of?', $domain ),
        'placeholder'   => __( 'If not please write in "none"', $domain ),
        'required'      => true,
    ) , $checkout->get_value('medical_medicine') );
    echo '</div>';

    endif;
}

// Add custom checkboxes to woocommerce checkout page for Photo Release, Mailing List & Release of Liability
add_action( 'woocommerce_review_order_before_submit', 'custom_checkout_fields' );
function custom_checkout_fields() {
    $checkout = WC()->checkout;
    $domain   = 'woocommerce';

    echo '<div id="custom_checkout_fields">
    <h3>'.__( 'Mailing Lists', $domain ).'</h3>
    <p>'.__( 'Mailing List boilerplate', $domain ).'</p>';

    woocommerce_form_field( 'mailing_consent', array(
        'type'      => 'checkbox',
        'class'     => array('input-checkbox'),
        'label'     => __( 'Please add me to Nonprofit\'s electronic and paper mailing lists.', $domain ),
        'required'  => false,
        'clear'     => true,
        'default'   => 1 //This will pre-select the checkbox
    ),  $checkout->get_value( 'mailing_consent' ) );

    // There is a class in the cart so show additional fields
    if ( is_product_cat_in_cart( 'class' ) ):

    echo '<h3>'.__( 'Photo Release', $domain ).'</h3>
    <p>'.__( 'Photo Release Boilerplate', $domain ).'</p>';

    woocommerce_form_field( 'photo_consent', array(
        'type'      => 'checkbox',
        'class'     => array('input-checkbox'),
        'label'     => __( 'I agree to the Photo Release as outlined above.', $domain ),
        'required'  => false,
        'clear'     => true,
        'default'   => 1 //This will pre-select the checkbox
    ),  $checkout->get_value( 'photo_consent' ) );

    echo '<h3>'.__( 'Release of Liability', $domain ).'</h3>
    <p>'.__( 'Release of Liability Boilerplate', $domain ).'</p>';

    woocommerce_form_field( 'liability_release', array(
        'type'      => 'checkbox',
        'class'     => array('input-checkbox'),
        'label'     => __( 'I agree to the Photo Release as outlined above.', $domain ),
        'required'  => true,
        'clear'     => true,
        'default'   => 1 //This will pre-select the checkbox
    ),  $checkout->get_value( 'liability_release' ) );

    endif;

    echo '</div>';
}

// Custom checkout fields validation
add_action('woocommerce_checkout_process', 'custom_checkout_fields_process');
function custom_checkout_fields_process() {
    $domain = 'woocommerce';

    if ( isset($_POST['emergency_contact']) && empty($_POST['emergency_contact']) )
        wc_add_notice( __( 'Please list an emergency contact.', $domain ) , 'error' );

    if ( isset($_POST['emergency_contact_relationship']) && empty($_POST['emergency_contact']) )
        wc_add_notice( __( 'Please indicate your relationship with your emergency contact.', $domain ), 'error' );

    if ( isset($_POST['emergency_contact_phone']) && empty($_POST['emergency_contact']) )
        wc_add_notice( __( 'Please list a phone number for your emergency contact.', $domain ), 'error' );

    if ( isset($_POST['medical_medicine']) && empty($_POST['emergency_contact']) )
        wc_add_notice( __( 'Please list any medications or write in "none".', $domain ), 'error' );

    // Other checkout fields
    if ( ! isset( $_POST['liability_release'] ) && ! $_POST['liability_release'] && isset($_POST['photo_consent']) )
        wc_add_notice( __( 'You must agree to the Release of Liability to register for this class.  Please contact us with any questions.', $domain ), 'error' );
}

// Save custom checkout fields in the order meta data
add_action( 'woocommerce_checkout_create_order', 'custom_checkout_fields_in_order_meta_data', 20, 2 );
function custom_checkout_fields_in_order_meta_data( $order, $data ) {

    if ( isset($_POST['emergency_contact']) && ! empty($_POST['emergency_contact']) )
        $order->update_meta_data( 'emergency_contact', sanitize_text_field($_POST['emergency_contact']) );

    if ( isset($_POST['emergency_contact_relationship']) && ! empty($_POST['emergency_contact_relationship']) )
        $order->update_meta_data( 'emergency_contact_relationship', sanitize_text_field($_POST['emergency_contact_relationship']) );

    if ( isset($_POST['emergency_contact_phone']) && ! empty($_POST['emergency_contact_phone']) )
        $order->update_meta_data( 'emergency_contact_phone', sanitize_text_field($_POST['emergency_contact_phone']) );

    if ( isset($_POST['medical_medicine']) && ! empty($_POST['medical_medicine']) )
        $order->update_meta_data( 'medical_medicine', sanitize_text_field($_POST['medical_medicine']) );

    if ( isset($_POST['mailing_consent']) && ! empty($_POST['mailing_consent']) )
        $order->update_meta_data( 'mailing_consent', '1' );

    if ( isset( $_POST['photo_consent']) && ! empty($_POST['photo_consent']) )
        $order->update_meta_data( 'photo_consent', '1' );

    if ( isset( $_POST['liability_release']) && ! empty($_POST['liability_release']) )
        $order->update_meta_data( 'liability_release', '1' );
}

// Add the emergency contact fields to email notifications
add_filter( 'woocommerce_email_order_meta_fields', 'custom_checkout_field_email_order_meta', 20, 3 );
function custom_checkout_field_email_order_meta( $fields, $sent_to_admin, $order ) {
    $domain = 'woocommerce';

    if( ! $order->get_meta( 'emergency_contact' ) )
        return $fields; // Exit if not set in the order

    echo '<h2>'.__( 'Emergency Contact & Medical Information', $domain ).'</h2>';

    $fields[] = array( 'label' => __( 'Emergency contact', $domain ),
        'value' => $order->get_meta( 'emergency_contact' ) );

    $fields[] = array( 'label' => __( 'Emergency Contact Relationship', $domain ),
        'value' => $order->get_meta( 'emergency_contact_relationship' ) );

    $fields[] = array( 'label' => __( 'Emergency Contact Phone', $domain ),
        'value' => $order->get_meta( 'emergency_contact_phone' ) );

    $fields[] = array( 'label' => __( 'Medical Conditions & Medications', $domain ),
        'value' => $order->get_meta( 'medical_medicine' ) );

    return $fields;
}

// Display some custom checkout fields in Order edit pages
add_action( 'woocommerce_admin_order_data_after_billing_address', 'display_custom_field_on_order_edit_pages', 20, 1 );
function display_custom_field_on_order_edit_pages( $order ){
    $domain = 'woocommerce';

    $billing_name = $order->get_billing_first_name().' '.$order->get_billing_last_name();

    if( $order->get_meta('mailing_consent') )
        echo '<p>' . $billing_name . __( ' agreed to the be added to Nonprofit\'s mailing lists.', $domain ).'</p>';

    if( $order->get_meta('photo_consent') )
        echo '<p>' . $billing_name . __( ' agreed to the Photo Release.', $domain ).'</p>';

    if( $order->get_meta('liability_release') )
        echo '<p>' . $billing_name . __( ' agreed to the Release of Liability.', $domain ).'</p>';
}

代码进入活动子主题（或活动主题）的function.php文件）。经过测试，可以正常工作。

Code goes in function.php file of your active child theme (or active theme). Tested and works.

结论：如果function.php文件中的某些代码无法正常工作，则在插件中无法更好地工作。但是，如果愿意，可以根据需要将其添加到插件中。

Conclusion: If some code doesn't work in function.php file, it will not work better in a plugin. But if you want you can add it in a plugin, if you prefer.

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