method

concern

Ruby on Rails latest stable (v6.1.7.7) - 0 notes - Class: Concerning

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What's this?

concern(topic, &module_definition) public

A low-cruft shortcut to define a concern.

concern :EventTracking do
  ...
end

is equivalent to

module EventTracking
  extend ActiveSupport::Concern

  ...
end

Show source

# File activesupport/lib/active_support/core_ext/module/concerning.rb, line 132
    def concern(topic, &module_definition)
      const_set topic, Module.new {
        extend ::ActiveSupport::Concern
        module_eval(&module_definition)
      }
    end

concern

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