function commerce_autosku_generate_sku in Commerce AutoSKU 7

Generates a SKU for the product passed in using the given pattern.

Parameters

$product: The product whose SKU should be generated.

$pattern: The pattern to use to determine the product SKU.

$case: String indicating the casing to use for letters in the SKU, one of:

• 'original': do not change the casing used in any of the tokens.
• 'uppercase': convert the SKU to all upper case letters.
• 'lowercase': convert the SKU to all lower case letters.

Return value

A string containing a unique SKU for the product pass in using the given pattern with a numeric suffix in the event of a pre-existing matching SKU.

1 call to commerce_autosku_generate_sku()

commerce_autosku_commerce_product_presave in ./commerce_autosku.commerce.inc

Implements hook_commerce_product_presave().

File

./commerce_autosku.module, line 258

Module hooks and helper functions for commerce_autosku

Code

function commerce_autosku_generate_sku($product, $pattern, $case = 'original') {

  // Create the new SKU using token replacement, clean out illegitimate values,
  // and trim it to the maximum SKU length - 255 characters.
  $sku = token_replace($pattern, array(
    'commerce-product' => $product,
  ), array(
    'clear' => TRUE,
  ));
  $sku = commerce_autosku_cleanstring($sku);
  $sku = drupal_substr($sku, 0, 255);

  // Adjust the casing as specified.
  switch ($case) {
    case 'uppercase':
      $sku = drupal_strtoupper($sku);
      break;
    case 'lowercase':
      $sku = drupal_strtolower($sku);
      break;
  }

  // Check to ensure the current SKU is unique...
  if (!commerce_product_validate_sku_unique($sku, $product->product_id)) {

    // If not, retain the originally generated SKU and begin to append numerals
    // to it in search of a unique SKU.
    $original_sku = $sku;
    $i = 0;
    do {
      $sku = drupal_substr($original_sku, 0, 255 - drupal_strlen(COMMERCE_AUTOSKU_REPLACEMENT . $i));
      $sku = commerce_autosku_cleanstring($sku . COMMERCE_AUTOSKU_REPLACEMENT . $i);
      $i++;
    } while (!commerce_product_validate_sku_unique($sku, $product->product_id));
  }
  return $sku;
}