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