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I am trying to learn Ruby on rails following the “Agile Web Development with Rails” book.
In the book it says how to create a doc file for your project:
rails_apps> rails new dummy_app
rails_apps> cd dummy_app
dummy_app> rake doc:rails
but I get this error:
rake aborted!
Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.
(See full trace by running task with --trace)
why? and how can i fix it?
You need to install a Javascript runtime. There are a few options listed in the URL in the error message (https://github.com/sstephenson/execjs). If you don’t have a strong preference, I’d recommend therubyracer (Google V8).
Just add this to your
Gemfile:and run