symfony/symfony — pull request #4222 by willdurand (2012-05-07 18:24:05+00:00)
Title: [Form] [PropertyPath] Avoid to throw exceptions if add/remove methods are not found, in order to use fallbacks (setter for example)

Everything is in the title.

It should be possible to use a setter if there is a adder, and no remover for example. The code after these exceptions is ready to deal with that.