method

included

v7.0.0 - Show latest stable - Class: ActiveSupport::Concern

included(base = nil, &block)

public

Evaluate given block in context of base class, so that you can write class macros here. When you define more than one included block, it raises an exception.

# File activesupport/lib/active_support/concern.rb, line 156
    def included(base = nil, &block)
      if base.nil?
        if instance_variable_defined?(:@_included_block)
          if @_included_block.source_location != block.source_location
            raise MultipleIncludedBlocks
          end
        else
          @_included_block = block
        end
      else
        super
      end
    end

included

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