Initial commit of foodsoft 2

app/models/membership.rb

@@ -0,0 +1,16 @@
+class Membership < ActiveRecord::Base
+  
+  # gettext-option
+  untranslate_all
+  
+  belongs_to :user
+  belongs_to :group
+  
+  # messages
+  ERR_NO_ADMIN_MEMBER_DELETE = "Mitgliedschaft kann nicht beendet werden. Du bist die letzte Administratorin"
+  
+  # check if this is the last admin-membership and deny
+  def before_destroy
+    raise ERR_NO_ADMIN_MEMBER_DELETE if self.group.role_admin? && self.group.memberships.size == 1 && Group.find_all_by_role_admin(true).size == 1 
+  end
+end