Is there a way to extends a base module when I use thor?

Question

I want to make a batch under a rails project.

I have created a base batch module:

# lib/tasks/batch_base.rb
module Tasks
  class BatchBase
    def run
      # Run something
    end
  end
end

Now I want to make a batch with thor.

# lib/tasks/another_batch.rb
require 'thor'
module Tasks
  class AnotherBatch < Thor
    desc 'test', 'sample'
    def hello(name)
      # Do something
    end
  end
end

Here I want to extends the base batch, but when I try:

class AnotherBatch < BatchBase < Thor
# or
class AnotherBatch < Thor < BatchBase

It doesn't work. Error:

superclass must be a Class (NilClass given) (TypeError)

How can I do it?

Answer 1

If I understand your concerns correctly you should declare your BatchBase as a module and you'll have something like that

 
module Tasks
  module BatchBase
    def run
    ...
    end
  end
end 


require 'thor'
module Tasks
  class AnotherBatch < Thor
    include BatchBase
  end
end

Ruby does not have multiple inheritance, you should use mixins instead. You can read more about it here