more forum stuff

app/models/forum.rb

@@ -1,6 +1,10 @@
 class Forum < ActiveRecord::Base
   belongs_to :forumgroup
   has_many :forumthreads
+  belongs_to :role_read, class_name: "Role", foreign_key: "role_read_id"
+  belongs_to :role_write, class_name: "Role", foreign_key: "role_write_id"
+
+  attr_accessible :name, :position, :role_read, :role_write, :role_read_id, :role_write_id, :forumgroup, :forumgroup_id
 
   def to_s
     name

app/models/forumgroup.rb

@@ -1,5 +1,13 @@
 class Forumgroup < ActiveRecord::Base
   has_many :forums
+  belongs_to :role_read, class_name: "Role", foreign_key: "role_read_id"
+  belongs_to :role_write, class_name: "Role", foreign_key: "role_write_id"
+  accepts_nested_attributes_for :forums
+
+  attr_accessible :name, :position, :role_read, :role_write, :role_read_id, :role_write_id
+
+  validates_presence_of :name, :position
+  validates_length_of :name, in: 2..20
 
   def to_s
     name

app/models/role.rb

@@ -35,4 +35,10 @@ class Role < ActiveRecord::Base
     end
   end
 
+  def self.all_from(role)
+    Role.all.select do |r|
+      r >= role
+    end
+  end
+
 end