Whilst this discussion was started quite a few years ago, it is still or again relevant, now that Rails 5 has deprecated `alias_method_chain` and in the meantime we've entered the realm of Rails 6.
There is no good way to prepend a concern to an existing class in Rails. This while there are quite a few cases in which it would make sense to wrap user-defined code in some concern-defined (e.g. library-defined) way.
What are your current thoughts about this?
~Wiebe-Marten ("Marten") Wijnja / Qqwy