rails association help from http://stackoverflow.com/questions/6063537/rails-model-association-on-views

gistfile1.rb

class Person
	has_many :groups
	has_many :group_memberships, :foreign_key => "member_id", :through => :groups
	
	scope :owned_groups, where(:is_owner => true).joins(:group_memberships) # gets all groups where this person is owner
end

class Group_Membership
	belongs_to :member, :class_name => 'Person'
	belongs_to :group
	
	# note that these attributes need to be defined
	# is_owner (boolean)
	# member_approved (boolean)
	
	scope :requested, :where(:member_approved => false)
end

class Group
	belongs_to :person
	has_many :group_memberships
	has_many :members, :class_name => "Person", :through => "group_memberships", :foreign_key => "member_id"
end