1 files changed, 26 insertions, 0 deletions
diff --git a/app/models/user_group_membership.rb b/app/models/user_group_membership.rb
new file mode 100644
index 0000000..18a8d48
--- /dev/null
+++ b/app/models/user_group_membership.rb
@@ -0,0 +1,26 @@
+class UserGroupMembership < ActiveRecord::Base
+  belongs_to :user
+  belongs_to :user_group
+  
+  validates_uniqueness_of :user_id, :scope => :user_group_id
+  validates_presence_of :user
+  validates_presence_of :user_group
+  
+  validate :user_belongs_to_the_tenant_of_the_user_group
+  
+  # State Machine stuff
+  default_scope where(:state => 'active')
+  state_machine :initial => :active do
+  end
+
+  def to_s
+    "#{self.user} / #{self.user_group}"
+  end
+
+  private
+  def user_belongs_to_the_tenant_of_the_user_group
+    if !self.user_group.tenant.users.include?(self.user)
+      errors.add(:user_id, "not a member of the tenant which this group belongs to")
+    end
+  end
+end