Class: Bigamy::HasOne

Inherits:
Proxy
  • Object
show all
Defined in:
lib/bigamy/proxy.rb

Direct Known Subclasses

ARHasOne, MongoHasOne

Instance Attribute Summary

Attributes inherited from Proxy

#me, #methods_added, #name, #options, #primary_key

Instance Method Summary collapse

Methods inherited from Proxy

#create_accessors, #divorce_everyone, #initialize, #root_klass, #root_klass_name, #serialize_foreign_key, #target_klass, #target_klass_name

Constructor Details

This class inherits a constructor from Bigamy::Proxy

Instance Method Details

#add_getter ⇒ Object 



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# File 'lib/bigamy/proxy.rb', line 74

def add_getter 
  me.class_eval <<-EOF
    def #{name}
      self.#{primary_key}.nil? ? nil : #{target_klass}.first(:conditions => {:#{foreign_key} => export_id_val(self.#{primary_key})})
    end
  EOF
end

#add_setter ⇒ Object 



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# File 'lib/bigamy/proxy.rb', line 82

def add_setter
  me.class_eval <<-EOF
    def #{name}= v
      if v.nil?
        new_id = nil
      else
        raise NewRecordAssignment.new('Child must be saved') if v.new_record?
        raise NewRecordAssignment.new('Parent must be saved') if self.new_record?
        raise TypeError unless v.is_a? #{klass}
        new_id = export_id_val(self.#{primary_key})
      end

      if #{name}
        #{name}.update_attributes :#{foreign_key} => nil
      end

      v.#{foreign_key} = new_id
      v.save!
    end
  EOF
end

#foreign_key ⇒ Object 



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# File 'lib/bigamy/proxy.rb', line 70

def foreign_key
  options[:foreign_key] || :"#{root_klass_name}_id"
end