class JoinedGroupsFinder < UnionFinder
def initialize(user)
@user = user
end
# Finds the groups of the source user, optionally limited to those visible to
# the current user.
def execute(current_user = nil)
segments = all_groups(current_user)
find_union(segments, Group).order_id_desc
end
private
def all_groups(current_user)
groups = []
groups << @user.authorized_groups.visible_to_user(current_user) if current_user
groups << @user.authorized_groups.public_to_user(current_user)
groups
end
end