robinbortlik/validates_overlap — pull request #9 by lagrangemartin (2013-08-03 22:34:45+00:00)
Title: Update overlap_validator.rb to allow to provide a custom validation mess...

...age and title

It is now possible to provide a custom validation message and a custom message title
eg :
validates :starts_at, :ends_at, :overlap => {message_content: "Two meetings cannot happen at the same time",message_title: "Start time and end time of the meeting"}