/**
* Validates that a value is numeric.
*
* <code>
* class Person extends ActiveRecord\Model {
* static $validates_numericality_of = array(
* array('salary', 'greater_than' => 19.99, 'less_than' => 99.99)
* );
* }
* </code>
*
* Available options:
*
* <ul>
* <li><b>only_integer:</b> value must be an integer (e.g. not a float)</li>
* <li><b>even:</b> must be even</li>
* <li><b>odd:</b> must be odd"</li>
* <li><b>greater_than:</b> must be greater than specified number</li>
* <li><b>greater_than_or_equal_to:</b> must be greater than or equal to specified number</li>
* <li><b>equal_to:</b> ...</li>
* <li><b>less_than:</b> ...</li>
* <li><b>less_than_or_equal_to:</b> ...</li>
* <li><b>allow_blank:</b> allow blank strings</li>
* <li><b>allow_null:</b> allow null strings</li>
* </ul>
*
* @param array $attrs Validation definition
*/
public function validates_numericality_of($attrs)
{
$configuration = array_merge(self::$DEFAULT_VALIDATION_OPTIONS, array('only_integer' => false));
// Notice that for fixnum and float columns empty strings are converted to nil.
// Validates whether the value of the specified attribute is numeric by trying to convert it to a float with Kernel.Float
// (if only_integer is false) or applying it to the regular expression /\A[+\-]?\d+\Z/ (if only_integer is set to true).
foreach ($attrs as $attr) {
$options = array_merge($configuration, $attr);
$attribute = $options[0];
$var = $this->model->{$attribute};
$numericalityOptions = array_intersect_key(self::$ALL_NUMERICALITY_CHECKS, $options);
if ($this->is_null_with_option($var, $options)) {
continue;
}
$not_a_number_message = isset($options['message']) ? $options['message'] : Errors::$DEFAULT_ERROR_MESSAGES['not_a_number'];
if (true === $options['only_integer'] && !is_integer($var)) {
if (!preg_match('/\\A[+-]?\\d+\\Z/', (string) $var)) {
$this->record->add($attribute, $not_a_number_message);
continue;
}
} else {
if (!is_numeric($var)) {
$this->record->add($attribute, $not_a_number_message);
continue;
}
$var = (double) $var;
}
foreach ($numericalityOptions as $option => $check) {
$option_value = $options[$option];
$message = isset($options['message']) ? $options['message'] : Errors::$DEFAULT_ERROR_MESSAGES[$option];
if ('odd' != $option && 'even' != $option) {
$option_value = (double) $options[$option];
if (!is_numeric($option_value)) {
throw new ValidationsArgumentError("{$option} must be a number");
}
$message = str_replace('%d', $option_value, $message);
if ('greater_than' == $option && !($var > $option_value)) {
$this->record->add($attribute, $message);
} elseif ('greater_than_or_equal_to' == $option && !($var >= $option_value)) {
$this->record->add($attribute, $message);
} elseif ('equal_to' == $option && !($var == $option_value)) {
$this->record->add($attribute, $message);
} elseif ('less_than' == $option && !($var < $option_value)) {
$this->record->add($attribute, $message);
} elseif ('less_than_or_equal_to' == $option && !($var <= $option_value)) {
$this->record->add($attribute, $message);
}
} else {
if ('odd' == $option && !Utils::is_odd($var) || 'even' == $option && Utils::is_odd($var)) {
$this->record->add($attribute, $message);
}
}
}
}
}
