function money_validate_field_value in Money field 6

Helper function to validate a money field.

Validates the currency and its relation with the amount. Both fields must be specified, or none.

Parameters

array $field: The field array.

number $amount: The number that should be validated.

number $currency: The currency that should be validated.

Return value

array An array with error messages or empty if value is correct.

1 call to money_validate_field_value()

money_field in ./money.module

Implementation of hook_field().

File

./money.module, line 295

This module defines the Money CCK field.

Code

function money_validate_field_value($field, $amount, $currency) {
  $widget_label = t($field['widget']['label']);
  $errors = array();
  if (empty($currency)) {
    if ($field['required']) {
      $errors[] = t('%name: Currency is required.', array(
        '%name' => $widget_label,
      ));
    }
    else {
      if (is_numeric($amount)) {
        $errors[] = t('%name: Currency is required when an amount is specified.', array(
          '%name' => $widget_label,
        ));
      }
    }
  }
  else {

    // When validating the default value in field settings panel, CCK is giving
    // us the options at field level, not within the widget item of the field.
    if (!empty($field['allowed_currencies'])) {
      $allowed_currencies = isset($field['allowed_currencies']) ? array_filter($field['allowed_currencies']) : array();
      $amount_required = FALSE;
    }
    else {
      $allowed_currencies = isset($field['widget']['allowed_currencies']) ? array_filter($field['widget']['allowed_currencies']) : array();
      $amount_required = TRUE;
    }

    // When no currency is enabled, allow them all.
    if (empty($allowed_currencies)) {
      $allowed_currencies = currency_api_get_list();
    }
    if (!isset($allowed_currencies[$currency])) {
      if (!$field['required']) {
        $errors[] = t('%name: The currency %currency is not allowed.', array(
          '%name' => $widget_label,
          '%currency' => $currency,
        ));
      }
    }
    else {
      if (!is_numeric($amount) && $amount_required) {
        $errors[] = t('%name: A valid amount is required when a currency is specified.', array(
          '%name' => $widget_label,
        ));
      }
    }
  }
  return $errors;
}