method

class_collisions

v1.2.6 - Show latest stable - 0 notes - Class: Rails::Generator::Commands::Create

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What's this?

class_collisions(*class_names) public

Check whether the given class names are already taken by Ruby or Rails. In the future, expand to check other namespaces such as the rest of the user’s app.

Show source

# File railties/lib/rails_generator/commands.rb, line 157
        def class_collisions(*class_names)
          class_names.flatten.each do |class_name|
            # Convert to string to allow symbol arguments.
            class_name = class_name.to_s

            # Skip empty strings.
            next if class_name.strip.empty?

            # Split the class from its module nesting.
            nesting = class_name.split('::')
            name = nesting.pop

            # Extract the last Module in the nesting.
            last = nesting.inject(Object) { |last, nest|
              break unless last.const_defined?(nest)
              last.const_get(nest)
            }

            # If the last Module exists, check whether the given
            # class exists and raise a collision if so.
            if last and last.const_defined?(name.camelize)
              raise_class_collision(class_name)
            end
          end
        end

class_collisions

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