Module: Roda::RodaPlugins::Hooks::ClassMethods

Defined in:
lib/roda/plugins/hooks.rb

Instance Method Summary collapse

Instance Method Details

#after(&block) ⇒ Object

Add an after hook. If there is already an after hook defined, use a proc that instance_execs the existing after proc and then instance_execs the given after proc, so that the given after proc always executes after the previous one.



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# File 'lib/roda/plugins/hooks.rb', line 44

def after(&block)
  if block
    @after = if b = @after
      @after = proc do |res|
        instance_exec(res, &b)
        instance_exec(res, &block)
      end
    else
      block
    end
  end
  @after
end

#before(&block) ⇒ Object

Add a before hook. If there is already a before hook defined, use a proc that instance_execs the give before proc and then instance_execs the existing before proc, so that the given before proc always executes before the previous one.



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# File 'lib/roda/plugins/hooks.rb', line 62

def before(&block)
  if block
    @before = if b = @before
      @before = proc do
        instance_exec(&block)
        instance_exec(&b)
      end
    else
      block
    end
  end
  @before
end

#inherited(subclass) ⇒ Object

Copy the before and after hooks into the subclasses when inheriting



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# File 'lib/roda/plugins/hooks.rb', line 78

def inherited(subclass)
  super
  subclass.instance_variable_set(:@before, @before)
  subclass.instance_variable_set(:@after, @after)
end