function date_sql_handler::arg_range

Use the parsed values from the ISO argument to determine the min and max date for this period.

File

core/modules/date/views/date_sql_handler.inc, line 844

SQL helper for Date API.

Class

date_sql_handler

A class to manipulate date SQL.

Code

function arg_range($arg) {
  // Parse the argument to get its parts.
  $parts = $this->arg_parts($arg);

  // Build a range from a period-only argument (assumes the min date is now.)
  if (empty($parts[0]['date']) && !empty($parts[0]['period']) && (empty($parts[1]))) {
    $min_date = date_now();
    $max_date = clone($min_date);
    foreach ($parts[0]['period'] as $part => $value) {
      date_modify($max_date, "+$value $part");
    }
    date_modify($max_date, '-1 second');
    return array($min_date, $max_date);
  }
  // Build a range from a period to period argument.
  if (empty($parts[0]['date']) && !empty($parts[0]['period']) && !empty($parts[1]['period'])) {
    $min_date = date_now();
    $max_date = clone($min_date);
    foreach ($parts[0]['period'] as $part => $value) {
      date_modify($min_date, "+$value $part");
    }
    date_modify($min_date, '-1 second');
    foreach ($parts[1]['period'] as $part => $value) {
      date_modify($max_date, "+$value $part");
    }
    date_modify($max_date, '-1 second');
    return array($min_date, $max_date);
  }
  if (!empty($parts[0]['date'])) {
    $value = $this->complete_date($parts[0]['date'], 'min');
    $min_date = new BackdropDateTime($value, date_default_timezone(), DATE_FORMAT_DATETIME);
    // Build a range from a single date-only argument.
    if (empty($parts[1]) || (empty($parts[1]['date']) && empty($parts[1]['period']))) {
      $value = $this->complete_date($parts[0]['date'], 'max');
      $max_date = new BackdropDateTime($value, date_default_timezone(), DATE_FORMAT_DATETIME);
      return array($min_date, $max_date);
    }
    // Build a range from start date + period.
    elseif (!empty($parts[1]['period'])) {
      foreach ($parts[1]['period'] as $part => $value) {
        $max_date = clone($min_date);
        date_modify($max_date, "+$value $part");
      }
      date_modify($max_date, '-1 second');
      return array($min_date, $max_date);
    }
  }
  // Build a range from start date and end date.
  if (!empty($parts[1]['date'])) {
    $value = $this->complete_date($parts[1]['date'], 'max');
    $max_date = new BackdropDateTime($value, date_default_timezone(), DATE_FORMAT_DATETIME);
    if (isset($min_date)) {
      return array($min_date, $max_date);
    }
  }
  // Build a range from period + end date.
  if (!empty($parts[0]['period'])) {
    $min_date = date_now();
    foreach ($parts[0]['period'] as $part => $value) {
      date_modify($min_date, "$value $part");
    }
    return array($min_date, $max_date);
  }
  // Intercept invalid info and fall back to the current date.
  $now = date_now();
  return array($now, $now);
}