DimDul One Page Product Checkout for WooCommerce

This guide covers installation, configuration and customization of DimDul One Page Product Checkout for WooCommerce.

1. Introduction

This plugin turns any WooCommerce product into a single-page checkout funnel. A visitor sees the product, selects options, adds to cart over AJAX and completes the embedded checkout — all without leaving the page. WooCommerce's native variation form is preserved, so swatch plugins keep working.

2. Requirements

WordPress 6.0 or higher
PHP 7.4 or higher
WooCommerce 7.0 or higher

3. Installation

Go to Plugins → Add New → Upload Plugin.
Upload dimdul-one-page-product-checkout.zip and click Install Now.
Click Activate.
Make sure WooCommerce is installed and active.

Prefer manual installation? Unzip the package and copy the dimdul-one-page-product-checkout folder into wp-content/plugins/.

4. Settings

Open WooCommerce → One Page Checkout. These defaults apply whenever a shortcode attribute is omitted.

Setting	Description
Landing template	Classic, Stacked, Detail First, Express, or Sticky Sidebar. Override per page with `template="…"`.
Show product summary	Display the image/title/description column.
Auto-add simple products	Add one unit on load for simple products.
Clear cart on load	Empty the cart before rendering (single-product funnels).
Accent colour / hover	Button and highlight colours.
Add to cart button text	Custom button label.
Checkout heading	Heading shown above the checkout form.
Load bundled styles	Disable if your theme styles the layout.

5. Shortcode

[one_page_product_checkout product_id="123"]

Attribute	Values	Default
`product_id`	integer	required
`template`	classic / stacked / detail-first / express / sidebar	from settings
`clear_cart`	yes / no	from settings
`auto_add_simple`	yes / no	from settings
`show_product_summary`	yes / no	from settings

5b. Templates

Slug	Layout
`classic`	Two columns: summary left, purchase controls and checkout right.
`stacked`	Single column: image, summary, purchase, checkout, description, reviews.
`detail-first`	Summary and purchase on top, then description, reviews, checkout.
`express`	Narrow funnel: summary, purchase, and checkout only.
`sidebar`	Scrolling content with a sticky checkout card.

6. Examples

Dedicated funnel (only this product in cart):

[one_page_product_checkout product_id="456" clear_cart="yes"]

Variable product, keep existing cart items:

[one_page_product_checkout product_id="789" show_product_summary="yes"]

Simple product with a manual quantity field:

[one_page_product_checkout product_id="321" auto_add_simple="no"]

7. Variable products

The visitor sees the standard WooCommerce variation selector.
Choosing options sets variation_id and attribute_* fields.
Clicking Add to cart sends those fields over AJAX.
The server validates the combination, stock and purchasability, then merges into any existing line.
The checkout section appears and totals refresh.

8. Variation Swatches for WooCommerce

The plugin keeps the native variation form, so swatch plugins attach normally. If a swatch fails, open the browser network tab and confirm admin-ajax.php?action=oppcl_add_to_cart returns success with a cart_item_key.

9. Developer hooks

oppcl_load_assets — force asset loading when the shortcode is stored outside post_content (page builders):

add_filter( 'oppcl_load_assets', function ( $load, $post ) {
    if ( $post && (int) $post->ID === 123 ) {
        return true;
    }
    return $load;
}, 10, 2 );

10. Troubleshooting

Symptom	Check
"WooCommerce is required"	Activate WooCommerce.
Scripts missing / checkout frozen	Shortcode stored outside post_content — use the `oppcl_load_assets` filter.
Variation add always errors	Confirm attributes match a variation; check stock; test with core dropdowns.
Layout looks unstyled	"Load bundled styles" is off and the theme has no matching styles — re-enable it.
Duplicate cart items	Use `clear_cart="yes"` on strict single-product landers.

11. Support

For help, use the plugin's support forum on WordPress.org. Please include your WordPress and WooCommerce versions and any console/network errors.