1 files changed, 24 insertions, 0 deletions
diff --git a/app/models/group_permission.rb b/app/models/group_permission.rb
new file mode 100644
index 0000000..fe988ba
--- /dev/null
+++ b/app/models/group_permission.rb
@@ -0,0 +1,24 @@
+class GroupPermission < ActiveRecord::Base
+  attr_accessible :group_id, :permission, :target_group_id
+
+  PERMISSION_TYPES = ['pickup']
+  
+  belongs_to :group
+  belongs_to :target_group, :class_name => "Group"
+
+  validates :target_group_id,
+            :presence => true,
+            :uniqueness => { :scope => [:group_id, :permission] }
+
+  validates :target_group,
+            :presence => true
+
+  validates :permission,
+            :presence => true,
+            :uniqueness => { :scope => [:group_id, :target_group_id] },
+            :inclusion => { :in => PERMISSION_TYPES }
+
+  def to_s
+    "#{self.permission} => #{self.target_group}"
+  end
+end