Module: Rooftop::Coercions

Defined in:
lib/rooftop/coercions.rb,
lib/rooftop/coercions/title_coercion.rb,
lib/rooftop/coercions/author_coercion.rb,
lib/rooftop/coercions/parent_coercion.rb

Defined Under Namespace

Modules: AuthorCoercion, ClassMethods, ParentCoercion, TitleCoercion

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/rooftop/coercions.rb', line 3

def self.included(base)
  # Include Rooftop::HookCalls to allow us to push things into a list of hooks in the right order
  base.include Rooftop::HookCalls
  base.extend ClassMethods

  # Add the call to the :after_find hook to the list of hook calls, to be processed later.
  # This is where we iterate over our previously established list of coercions, and call each
  # in turn
  base.send(:add_to_hook, :after_find, ->(r){
    r.coercions.each do |field,coercion|
      if r.respond_to?(field)
        r.send("#{field}=",coercion.call(r.send(field)))
      end
    end
  })
  base.send(:before_save, ->(r) {
    r.coercions.each do |field,coercion|
      r.send(:"restore_#{field}!") unless r.new?
    end
  })
end

Instance Method Details

#coercions ⇒ Object

Instance method to get the class’s coercions



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# File 'lib/rooftop/coercions.rb', line 40

def coercions
  self.class.instance_variable_get(:"@coercions") || {}
end