Module: ArcWeld::Relationship::ClassMethods

Defined in:
lib/arc_weld/relationship.rb

Instance Method Summary collapse

Instance Method Details

#class_relationship_types ⇒ Object 



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# File 'lib/arc_weld/relationship.rb', line 52

def class_relationship_types
  class_variable_get :@@RELATIONSHIPS
end

#has_relationship(*args) ⇒ Object 



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# File 'lib/arc_weld/relationship.rb', line 38

def has_relationship(*args)
  #puts format('defining relationship on %s', self.name)
  options=case args[-1]
    when Hash
      args.pop
    else
      Hash.new(false)
  end

  args.each do |sym|
    register_relationship(sym,options[:multiple])
  end
end

#register_relationship(name, multiple = false) ⇒ Object 



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# File 'lib/arc_weld/relationship.rb', line 56

def register_relationship(name, multiple=false)
  unless class_relationship_types.include?(name)
    class_relationship_types << name

    if ArcWeld::Relationships.const_defined? constantize(name)
      self.class_eval "include ArcWeld::Relationships::#{constantize(name)}"
    end
    # TODO: this is a horrible mess
    unless self.method_defined? name
      if multiple
        self.class_eval do
          define_method("#{name}") do
            val = self.instance_variable_get("@#{name}")
            if val.nil?
              self.instance_variable_set("@#{name}",[])
            end
            self.instance_variable_get("@#{name}")
          end
        end
      else
        self.class_eval do
          define_method("#{name}") do
            self.instance_variable_get("@#{name}")
          end
        end
      end
    end
    unless self.method_defined? "#{name}="
      self.class_eval do
        define_method("#{name}=") do |val|
          self.instance_variable_set("@#{name}",val)
        end
      end
    end


  end
end