在 Woocommerce 中添加带有表单的自定义支付网关

Question

在 Woocommerce 中，我想要一个带有完整表格的自定义支付网关。该表格的答案显示在验证页面（我认为这是英文的感谢页面）和后台，按顺序显示。

我在 PHP 方面还不够好，无法创建这个，完全靠我自己。但我学会了变得更好，试图理解代码是如何工作的。

所以我试图找到一些接近我的问题的东西我找到了这个很好的答案：
Add a custom payment gateway with additional radio buttons in Woocommerce

哪个回答了我问题的 90%。

我发现自己如何添加其他类型的表单元素，如文本、复选框...

      /**
     * Output the "payment type" radio buttons fields in checkout.
     */
    public function payment_fields(){
        if ( $description = $this->get_description() ) {
            echo wpautop( wptexturize( $description ) );
        }

        /**echo '<style>#transaction_type_field label.radio { display:inline-block; margin:0 .8em 0 .4em}</style>';**/

        $option_keys = array_keys($this->options);

        woocommerce_form_field( 'transaction_type-1', array(
            'type'          => 'checkbox',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Espèces', $this->domain),
        ), reset( $option_keys ) );

        woocommerce_form_field( 'transaction_type-2', array(
            'type'          => 'checkbox',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Tickets restaurants', $this->domain),
        ), reset( $option_keys ) );

        woocommerce_form_field( 'transaction_type-3', array(
            'type'          => 'checkbox',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Chèques vacances', $this->domain),
        ), reset( $option_keys ) );

        woocommerce_form_field( 'transaction_type-4', array(
            'type'          => 'radio',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Payment Information - Test', $this->domain),
            'options'       => $this->options,
        ), reset( $option_keys ) );


    }

但我不明白如何 "stock" 答案并显示出来。我尝试使用第一个复选框并尝试了这个：

       /**
     * Save the chosen payment type as order meta data.
     *
     * @param object $order
     * @param array $data
     */
    public function save_order_payment_type_meta_data( $order, $data ) {
        if ( $data['payment_method'] === $this->id && isset($_POST['transaction_type-1']) )
            $order->update_meta_data('_transaction_type', esc_attr($_POST['transaction_type-1']) );
    }

但它不起作用。我想我错过了一些我不明白的东西，也许是关于这个的：

reset( $option_keys )

因此，如果您对我的问题有解决方案和解释，或者至少有线索，那将对我有很大帮助。

Answer 1

尝试以下替换代码函数（对于多个复选框）：

    /**
     * Output the "payment type" fields in checkout.
     */
    public function payment_fields(){
        if ( $description = $this->get_description() ) {
            echo wpautop( wptexturize( $description ) );
        }

        woocommerce_form_field( 'transaction_type-1', array(
            'type'          => 'checkbox',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Espèces', $this->domain),
        ), '' );

        woocommerce_form_field( 'transaction_type-2', array(
            'type'          => 'checkbox',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Tickets restaurants', $this->domain),
        ), '' );

        woocommerce_form_field( 'transaction_type-3', array(
            'type'          => 'checkbox',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Chèques vacances', $this->domain),
        ), '' );

        $option_keys = array_keys($this->options);

        woocommerce_form_field( 'transaction_type-4', array(
            'type'          => 'radio',
            'class'         => array('transaction_type form-row-wide'),
            'label'         => __('Payment Information - Test', $this->domain),
            'options'       => $this->options,
        ), reset( $option_keys ) );
    }

    /**
     * Save the chosen payment type as order meta data.
     *
     * @param object $order
     * @param array $data
     */
    public function save_order_payment_type_meta_data( $order, $data ) {
        if ( $data['payment_method'] === $this->id ) {
            $meta_value = array(); // Initializing

            if ( isset($_POST['transaction_type-1']) ) {
                $meta_value[1] = __('Espèces', $this->domain);
            }

            if ( isset($_POST['transaction_type-2']) ) {
                $meta_value[2] = __('Tickets restaurants', $this->domain);
            }

            if ( isset($_POST['transaction_type-3']) ) {
                $meta_value[3] = __('Chèques vacances', $this->domain);
            }

            // Save transaction type (from fields 1 to 3) as an array
            if( sizeof($meta_value) > 0 ) {
                $order->update_meta_data('_transaction_type', $meta_value );
            }

            // Save transaction type test (from fields 4) as a string
            if ( isset($_POST['transaction_type-4']) ) {
                $order->update_meta_data('_transaction_type_test', esc_attr($_POST['transaction_type-4']) );
            }
        }
    }

    /**
     * Display the chosen payment type on order totals table
     *
     * @param array    $total_rows
     * @param WC_Order $order
     * @param bool     $tax_display
     * @return array
     */
    public function display_transaction_type_order_item_totals( $total_rows, $order, $tax_display ){
        if( is_a( $order, 'WC_Order' ) && $order->get_meta('_transaction_type') ) {
            $new_rows = []; // Initializing
            $options  = $this->options;

            // Loop through order total lines
            foreach( $total_rows as $total_key => $total_values ) {
                $new_rows[$total_key] = $total_values;
                if( $total_key === 'payment_method' ) {
                    // Get transaction type array
                    if( $meta_data = $order->get_meta('_transaction_type') ) {
                        $new_rows['payment_type'] = [
                            'label' => __("Transaction type", $this->domain) . ':',
                            'value' => implode(',', $meta_data),
                        ];
                    }
                }
            }

            $total_rows = $new_rows;
        }
        return $total_rows;
    }

它应该更好用……

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