Does this commit for Foreman 1.6.0 implement overwrite? @isratrade
https://github.com/theforeman/foreman/commit/c980e9a8917cc9fdee5835732428462e22fa3f5b

Actually, I found that I had to set {"overwrite":"true"} in quotes, because of this:

https://github.com/theforeman/foreman/blob/develop/app/models/host/managed.rb#L611-614

  # We have to coerce the value back to boolean. It is not done for us by the framework.
  def overwrite=(value)
    @overwrite = value == "true" 
  end

Is there some way to put a flexible truthiness test into the API or Controller, rather than in the model?

Ah. It could be at the controller level, but it'd be much less duplication in the model - you could simply use value.to_s == "true" instead. Generally Rails does string/bool stuff at the ActiveRecord layer, which isn't applicable for a setter.

I will submit a PR shortly!