Unlike the addon you linked to earlier, the following code changes do NOT add attribute choices to the product listing. Instead, they simply force the cart to add the only one single attribute defined for the given product.
If a product has only ONE attribute, then a buy-now button will appear. If more than one (including choice between DOC vs PDF formats for example), then the default "more info..." will show.
There are quite a few edits to make:
/includes/functions/functions_lookups.php
around line 226, replace the ENTIRE zen_has_product_attributes function declaration with this:```
/*
-
Check if product has attributes
*/
function zen_has_product_attributes($products_id, $not_readonly = 'true', $returnCount = FALSE) {
global $db;
if (PRODUCTS_OPTIONS_TYPE_READONLY_IGNORED == '1' and $not_readonly == 'true') {
// don't include READONLY attributes to determine if attributes must be selected to add to cart
$attributes_query = "select pa.products_attributes_id
from " . TABLE_PRODUCTS_ATTRIBUTES . " pa left join " . TABLE_PRODUCTS_OPTIONS . " po on pa.options_id = po.products_options_id
where pa.products_id = '" . (int)$products_id . "' and po.products_options_type != '" . PRODUCTS_OPTIONS_TYPE_READONLY . "'";
} else {
// regardless of READONLY attributes no add to cart buttons
$attributes_query = "select pa.products_attributes_id
from " . TABLE_PRODUCTS_ATTRIBUTES . " pa
where pa.products_id = '" . (int)$products_id . "'";
}
if ($returnCount == FALSE) {
$attributes_query .= " limit 1";
} else {
$attributes_query = str_replace('select pa.products_attributes_id', 'select count(pa.products_attributes_id) as count', $attributes_query);
}
//die($attributes_query);
$attributes = $db->Execute($attributes_query);
//if ($products_id == 179) die(print_r($attributes->fields, TRUE));
if ($returnCount == TRUE) {
return $attributes->fields['count'];
}
if ($attributes->recordCount() > 0 && $attributes->fields['products_attributes_id'] > 0) {
return true;
} else {
return false;
}
}
/includes/modules/NAME_OF_YOUR_TEMPLATE_IF_ANY/product_listing.php, line 114, edit as shown:```
if (zen_has_product_attributes($listing->fields['products_id'][B], 'false', TRUE) > 1[/B] or PRODUCT_LIST_PRICE_BUY_NOW == '0') {
/includes/classes/shopping_cart.php
in function actionAddProduct(), line 1568 (v1.3.8a), insert the new lines as shown:```
if (isset($_POST['products_id']) && is_numeric($_POST['products_id'])) {
[B] // Add default attribute if not specified and only one attrib exists for this product
if (!isset($_POST['id']) && zen_has_product_attributes($_POST['products_id'], 'true', TRUE) == 1) {
$sql = "select distinct popt.products_options_id, popt.products_options_name
from " . TABLE_PRODUCTS_OPTIONS . " popt, " . TABLE_PRODUCTS_ATTRIBUTES . " patrib
where patrib.products_id='" . (int)$_POST['products_id'] . "'
and patrib.options_id = popt.products_options_id
and popt.language_id = '" . (int)$_SESSION['languages_id'] . "' LIMIT 1";
$products_options_names = $db->Execute($sql);
$sql = "select pov.products_options_values_id, pov.products_options_values_name
from " . TABLE_PRODUCTS_ATTRIBUTES . " pa, " . TABLE_PRODUCTS_OPTIONS_VALUES . " pov
where pa.products_id = '" . (int)$_POST['products_id'] . "'
and pa.options_id = '" . (int)$products_options_names->fields['products_options_id'] . "'
and pa.options_values_id = pov.products_options_values_id
and pov.language_id = '" . (int)$_SESSION['languages_id'] . "' LIMIT 1 ";
$products_options = $db->Execute($sql);
if ($products_options->RecordCount() == 1) {
$_POST['id'][$products_options_names->fields['products_options_id']] = $products_options->fields['products_options_values_id'];
}
}[/B]
// verify attributes and quantity first
line 1673 change this:
function actionBuyNow($goto, $parameters) {
global $messageStack;
if (isset($_GET['products_id'])) {
if (zen_has_product_attributes($_GET['products_id'])) {
zen_redirect(zen_href_link(zen_get_info_page($_GET['products_id']), 'products_id=' . $_GET['products_id']));
} else {
$add_max = zen_get_products_quantity_order_max($_GET['products_id']);
to this:
function actionBuyNow($goto, $parameters) {
global $messageStack;
if (isset($_GET['products_id'])) {
[B] $attribCount = zen_has_product_attributes($_GET['products_id'], 'false', TRUE);
// if product has more than one attrib, go to product page. If has only one, treat as a regular actionAddProduct call
if ($attribCount > 1) {
zen_redirect(zen_href_link(zen_get_info_page($_GET['products_id']), 'products_id=' . $_GET['products_id']));
} elseif ($attribCount == 1) {
$_GET['action'] = 'add_product';
$_POST['products_id'] = $_GET['products_id'];
$_POST['cart_quantity'] = 1;
$this->actionAddProduct($goto, $parameters);
return FALSE;[/B]
} else {
$add_max = zen_get_products_quantity_order_max($_GET['products_id']);
The above edits deal with the main product listing.
If you also want to adjust the products_new, products_all, and products_featured pages, you'll need to make a couple more edits to each of those, respectively:
/includes/templates/NAME_OF_YOUR_TEMPLATE/templates/tpl_modules_products_new_listing.php
line 85:```
if (zen_has_product_attributes($products_new->fields['products_id'][B], 'false', TRUE) > 2[/B]) {
Same with tpl_modules_products_featured_listing.php and tpl_modules_products_all_listing.php
/includes/modules/pages/products_new/header_php.php
line 47:if (zen_has_product_attributes($check_products_all->fields['products_id'][B], 'false', TRUE) > 1[/B]) {and line 55:```
if (zen_has_product_attributes($check_products_all->fields['products_id'][B], 'false', TRUE) < 2[/B]) {
Same with the header_php.php file for the products_all and products_featured folders.
These same edits can be applied to v1.3.9 and v1.5.0; just use care since the line numbers have changed in most cases.
This functionality will be included in v2.0.0
