protected function CompareTokenWithToken::doEvaluate in Rules Token 8

Same name and namespace in other branches

1. 2.x src/Plugin/Condition/CompareTokenWithToken.php \Drupal\rules_token\Plugin\Condition\CompareTokenWithToken::doEvaluate()
2. 1.x src/Plugin/Condition/CompareTokenWithToken.php \Drupal\rules_token\Plugin\Condition\CompareTokenWithToken::doEvaluate()

Get values of two tokens and compare it with each other.

Parameters

string $token_1: The token to be compared against $token_2.

mixed $token_entity_1: The entity from the context used in token 1.

string $operation: Data comparison operation. Typically one of:

• "=="
• "<"
• ">"
• "contains" (for strings or arrays)
• "IN" (for arrays or lists).

string $token_2: The token to be compared against $token_1.

mixed $token_entity_2: The entity from the context used in token 2.

Return value

bool The evaluation of the condition.

File

src/Plugin/Condition/CompareTokenWithToken.php, line 67

Class

CompareTokenWithToken

Provides a 'Compare Token with Token' condition.

Namespace

Drupal\rules_token\Plugin\Condition

Code

protected function doEvaluate($token_1, $token_entity_1, $operation, $token_2, $token_entity_2) {

  // Set flag for removing token from the final text if no replacement value
  // can be generated.
  // For, instance, if a node body is empty then token [node:body] will return
  // '[node:body]' string. Setting 'clear' to TRUE prevents such behaviour.
  $token_options = [
    'clear' => TRUE,
  ];

  // Get the value of the token 1.
  if ($token_1 && $token_entity_1) {

    // Extract entity name from a token, for instance if token
    // is [node:created] then entity name will be 'node'.
    $entity_name = mb_substr($token_1, 1, strpos($token_1, ':') - 1);
    $token_data = [
      $entity_name => $token_entity_1,
    ];
    $value_1 = \Drupal::token()
      ->replace($token_1, $token_data, $token_options);
  }
  elseif ($token_1) {
    $value_1 = \Drupal::token()
      ->replace($token_1, [], $token_options);
  }

  // Get the value of the token 2.
  if ($token_2 && $token_entity_2) {

    // Extract entity name from a token, for instance if token
    // is [node:created] then entity name will be 'node'.
    $entity_name = mb_substr($token_2, 1, strpos($token_2, ':') - 1);
    $token_data = [
      $entity_name => $token_entity_2,
    ];
    $value_2 = \Drupal::token()
      ->replace($token_2, $token_data, $token_options);
  }
  elseif ($token_2) {
    $value_2 = \Drupal::token()
      ->replace($token_2, [], $token_options);
  }

  // The following code is based on the code from the 'DataComparison'
  // action of 'Rules' module.
  $operation = $operation ? strtolower($operation) : '==';
  switch ($operation) {
    case '<':
      return $value_1 < $value_2;
    case '>':
      return $value_1 > $value_2;
    case 'contains':
      return is_string($value_1) && strpos($value_1, $value_2) !== FALSE || is_array($value_1) && in_array($value_2, $value_1);
    case 'in':
      return is_array($value_2) && in_array($value_1, $value_2);
    case '==':
    default:

      // In case both values evaluate to FALSE, further differentiate between
      // NULL values and values evaluating to FALSE.
      if (!$value_1 && !$value_2) {
        return isset($value_1) && isset($value_2) || !isset($value_1) && !isset($value_2);
      }
      return $value_1 == $value_2;
  }
}