src/Db/DbDef.php
protected function columnDef($type, $nullDefault = false) {
        $column = ['type' => $type];

        if ($nullDefault === null || $nullDefault == true) {
            $column['required'] = false;
        }
        if ($nullDefault === false) {
            $column['required'] = true;
        } else {
            $column['required'] = true;
            $column['default'] = $nullDefault;
        }

        return $column;
    }
protected function columnDef($type, $nullDefault = false) {
        $column = ['type' => $type];

        if ($nullDefault === null || $nullDefault == true) {
            $column['required'] = false;
        }
        if ($nullDefault === false) {
            $column['required'] = true;
        } else {
            $column['required'] = true;
            $column['default'] = $nullDefault;
        }

        return $column;
    }
Get an array column def from a structured function call.

@param string $type The database type of the column.
@param mixed $nullDefault Whether or not to allow null or the default value.

null|true
: The column is not required.
false
: The column is required.
Anything else
: The column is required and this is its default.

@return array Returns the column def as an array.