Module: Rooftop::FieldAliases

Defined in:
lib/rooftop/field_aliases.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/rooftop/field_aliases.rb', line 7

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 field aliases.
  base.send(:add_to_hook, :after_find, ->(r){
    r.field_aliases.each do |old, new|
      if r.respond_to?(old)
        r.send("#{new}=",r.send(old))
      end
    end
  })

  base.send(:before_save, ->(r) {
    r.field_aliases.each do |old,new|
      r.send(:"restore_#{new}!") unless r.new?
    end
  })

end

Instance Method Details

#field_aliases ⇒ Object

Class method to get the class’s field aliases



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# File 'lib/rooftop/field_aliases.rb', line 43

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