How to invoke rake with non-rake parameters

Question

I have a rake task that creates diagrams:

task :diagram do
  `rake erd filetype=dot disconnected=true`
end

The execution of this task is quite slow and I guess it is because in the nested rake-invoke statement the whole rails environment is loaded again.

I wanted to use Rake::Task['...'].invoke instead. But the erd task has some non-rake arguements (filetype=dot etc.), which don't seem to work with the invoke method.

Is there a way to pass those arguments to rake so that I can use the proper rake invoke syntax.

http://stackoverflow.com/a/5050412/784318 gave me some pointers towards environment varables — Besi, Jun 30 '14 at 13:58

score 4 · Accepted Answer · answered Jun 30 '14 at 13:53

4

Try setting the ENV variables in your code:

task :diagram do
  ENV['filetype']='dot'
  ENV['disconnected'='true'

  Rake::Task['erd'].invoke
end

answered Jun 30 '14 at 13:53

Uri Agassi

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This does the trick. It saves me valuable 7.7 seconds each time. – Besi Jun 30 '14 at 13:57

How to invoke rake with non-rake parameters

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