symfony/symfony — pull request #8375 by marekkalnik (2013-06-27 23:48:38+00:00)
Title: [OptionsResolver] Allow giving a callback as an allowedValue to OptionsResolver

I recently had to use an option which was an array and could contain some one or multiple values from a list. As it could contain all possible combinations, it was not possible to validate it with a list of allowed values.

| Q | A
| ------------- | ---
| Bug fix? | no
| New feature? | yes
| BC breaks? | no
| Deprecations? | no
| Tests pass? | yes
| Fixed tickets | --
| License | MIT
| Doc PR | I will write the doc if the feature gets some feedback