Magento将总应付款和总付款添加到PDF发票

Question

您好我正在尝试在我的Magento PDF发票上添加总付费和总预付款。我在sales / etc / config.xml中的配置文件中添加了这些行。

onNext

这为我提供了PDF发票中我需要的行，但值为0.这些值在数据库表sales_flat_order中，但它在sales_flat_invoice中查找它们。我还在sales_flat_invoice中创建了一个mysql列，并手动输入一个数字，它显示在发票上，所以我知道这样可行。我的问题是如何从配置文件中的另一个表调用列，或者如何将总付费和总到期值输入到我的数据库中的两个新列中？

这是订单页面中块的代码，显示总到期和总付款。

<pdf>
        <invoice>
            <default>sales/order_pdf_items_invoice_default</default>
            <grouped>sales/order_pdf_items_invoice_grouped</grouped>
        </invoice>
        <shipment>
            <default>sales/order_pdf_items_shipment_default</default>
        </shipment>
        <creditmemo>
            <default>sales/order_pdf_items_creditmemo_default</default>
            <grouped>sales/order_pdf_items_creditmemo_grouped</grouped>
        </creditmemo>
        <totals>
            <subtotal translate="title">
                <title>Subtotal</title>
                <source_field>subtotal</source_field>
                <font_size>7</font_size>
                <display_zero>1</display_zero>
                <sort_order>100</sort_order>
            </subtotal>
            <discount translate="title">
                <title>Discount</title>
                <source_field>discount_amount</source_field>
                <amount_prefix></amount_prefix>
                <title_source_field>discount_description</title_source_field>
                <font_size>7</font_size>
                <display_zero>0</display_zero>
                <sort_order>200</sort_order>
            </discount>
            <shipping translate="title">
                <title>Shipping</title>
                <source_field>shipping_amount</source_field>
                <font_size>7</font_size>
                <display_zero>0</display_zero>
                <sort_order>400</sort_order>
            </shipping>
            <adjustment_positive translate="title">
                <title>Adjustment Refund</title>
                <source_field>adjustment_positive</source_field>
                <font_size>7</font_size>
                <display_zero>0</display_zero>
                <sort_order>500</sort_order>
            </adjustment_positive>
            <adjustment_negative translate="title">
                <title>Adjustment Fee</title>
                <source_field>adjustment_negative</source_field>
                <font_size>7</font_size>
                <display_zero>0</display_zero>
                <sort_order>600</sort_order>
            </adjustment_negative>
            <grand_total translate="title">
                <title>Grand Total</title>
                <source_field>grand_total</source_field>
                <font_size>8</font_size>
                <display_zero>0</display_zero>
                <sort_order>700</sort_order>
            </grand_total>
            <base_total_due translate="title">
                <title>Total Due</title>
                <source_field>base_total_due</source_field>
                <font_size>8</font_size>
                <display_zero>1</display_zero>
                <sort_order>800</sort_order>
            </base_total_due>
            <total_paid translate="title">
                <title>Total Paid</title>
                <source_field>total_paid</source_field>
                <font_size>8</font_size>
                <display_zero>1</display_zero>
                <sort_order>900</sort_order>
            </total_paid>
        </totals>
    </pdf>

非常感谢任何帮助！