instance method
revision
Ruby on Rails edge
Since edgeSignature
revision()Returns the application’s revision (deployment identifier). Useful for error reporting and deployment verification.
Set via config.revision (string), ENV, or REVISION file. Always either a String or nil.
Source
# File railties/lib/rails/application.rb, line 401
def revision
unless @revision_initialized
@revision = begin
ENV["REVISION"].presence ||
root.join("REVISION").read.strip.presence
rescue SystemCallError
r, w = IO.pipe
success = system("git", "-C", root.to_s, "rev-parse", "HEAD", in: File::NULL, err: File::NULL, out: w)
w.close
rev = r.read.strip
r.close
rev if success
end
@revision_initialized = true
end
@revision
end
Defined in railties/lib/rails/application.rb line 401
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Defined in Rails::Application