Why are hyphens invalid in JS-like syntax for hashes in Ruby

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0

Going through Hartl's Rails tutorial, and he mentions that while:

stylesheet_link_tag "application", { media: "all",
                                 "data-turbolinks-track" => true } 

is valid

stylesheet_link_tag "application", { media: "all",
                                 data-turbolinks-track: true }

is not valid because "invalid because of hyphens." Can anyone explain this further for me? Why do hyphens make this invalid?

asked 5 mins ago

avinj86

1