CallbackChoiceLoader
class CallbackChoiceLoader implements ChoiceLoaderInterface
Loads an {@link ArrayChoiceList} instance from a callable returning an array of choices.
Methods
| __construct(callable $callback) | ||
| ChoiceListInterface | loadChoiceList(null|callable $value = null) Loads a list of choices. | |
| array | loadChoicesForValues(array $values, null|callable $value = null) Loads the choices corresponding to the given values. | |
| string[] | loadValuesForChoices(array $choices, null|callable $value = null) Loads the values corresponding to the given choices. |
Details
__construct(callable $callback)
Parameters
| callable | $callback | The callable returning an array of choices |
ChoiceListInterface loadChoiceList(null|callable $value = null)
Loads a list of choices.
Optionally, a callable can be passed for generating the choice values. The callable receives the choice as first and the array key as the second argument.
Parameters
| null|callable | $value | The callable which generates the values from choices |
Return Value
| ChoiceListInterface | The loaded choice list |
array loadChoicesForValues(array $values, null|callable $value = null)
Loads the choices corresponding to the given values.
The choices are returned with the same keys and in the same order as the corresponding values in the given array.
Optionally, a callable can be passed for generating the choice values. The callable receives the choice as first and the array key as the second argument.
Parameters
| array | $values | An array of choice values. Non-existing values in this array are ignored |
| null|callable | $value | The callable generating the choice values |
Return Value
| array | An array of choices |
string[] loadValuesForChoices(array $choices, null|callable $value = null)
Loads the values corresponding to the given choices.
The values are returned with the same keys and in the same order as the corresponding choices in the given array.
Optionally, a callable can be passed for generating the choice values. The callable receives the choice as first and the array key as the second argument.
Parameters
| array | $choices | An array of choices. Non-existing choices in this array are ignored |
| null|callable | $value | The callable generating the choice values |
Return Value
| string[] | An array of choice values |
© 2004–2017 Fabien Potencier
Licensed under the MIT License.
http://api.symfony.com/4.0/Symfony/Component/Form/ChoiceList/Loader/CallbackChoiceLoader.html