Same name in other branches

1. 9 core/lib/Drupal/Core/Config/StorableConfigBase.php \Drupal\Core\Config\StorableConfigBase::castValue()
2. 10 core/lib/Drupal/Core/Config/StorableConfigBase.php \Drupal\Core\Config\StorableConfigBase::castValue()
3. 11.x core/lib/Drupal/Core/Config/StorableConfigBase.php \Drupal\Core\Config\StorableConfigBase::castValue()

Casts the value to correct data type using the configuration schema.

Parameters

string $key: A string that maps to a key within the configuration data.

string $value: Value to associate with the key.

Return value

mixed The value cast to the type indicated in the schema.

Throws

\Drupal\Core\Config\UnsupportedDataTypeConfigException If the value is unsupported in configuration.

1 call to StorableConfigBase::castValue()

Config::save in core/lib/Drupal/Core/Config/Config.php

Saves the configuration object.

File

core/lib/Drupal/Core/Config/StorableConfigBase.php, line 178

Class

StorableConfigBase

Provides a base class for configuration objects with storage support.

Namespace

Drupal\Core\Config

Code

protected function castValue($key, $value) {
    $element = $this->getSchemaWrapper()
        ->get($key);
    // Do not cast value if it is unknown or defined to be ignored.
    if ($element && ($element instanceof Undefined || $element instanceof Ignore)) {
        // Do validate the value (may throw UnsupportedDataTypeConfigException)
        // to ensure unsupported types are not supported in this case either.
        $this->validateValue($key, $value);
        return $value;
    }
    if (is_scalar($value) || $value === NULL) {
        if ($element && $element instanceof PrimitiveInterface) {
            // Special handling for integers and floats since the configuration
            // system is primarily concerned with saving values from the Form API
            // we have to special case the meaning of an empty string for numeric
            // types. In PHP this would be casted to a 0 but for the purposes of
            // configuration we need to treat this as a NULL.
            $empty_value = $value === '' && ($element instanceof IntegerInterface || $element instanceof FloatInterface);
            if ($value === NULL || $empty_value) {
                $value = NULL;
            }
            else {
                $value = $element->getCastedValue();
            }
        }
    }
    else {
        // Throw exception on any non-scalar or non-array value.
        if (!is_array($value)) {
            throw new UnsupportedDataTypeConfigException("Invalid data type for config element {$this->getName()}:{$key}");
        }
        // Recurse into any nested keys.
        foreach ($value as $nested_value_key => $nested_value) {
            $value[$nested_value_key] = $this->castValue($key . '.' . $nested_value_key, $nested_value);
        }
        if ($element instanceof Sequence) {
            $data_definition = $element->getDataDefinition();
            if ($data_definition instanceof SequenceDataDefinition) {
                // Apply any sorting defined on the schema.
                switch ($data_definition->getOrderBy()) {
                    case 'key':
                        ksort($value);
                        break;
                    case 'value':
                        // The PHP documentation notes that "Be careful when sorting
                        // arrays with mixed types values because sort() can produce
                        // unpredictable results". There is no risk here because
                        // \Drupal\Core\Config\StorableConfigBase::castValue() has
                        // already cast all values to the same type using the
                        // configuration schema.
                        sort($value);
                        break;
                }
            }
        }
    }
    return $value;
}

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