X-Git-Url: https://git.arvados.org/arvados.git/blobdiff_plain/3dccfa028282d8b667a7b447ea061b7eecc8618f..32002eb6e87a391d1fad2b1b206dbc74d6659fc5:/services/api/app/models/group.rb

diff --git a/services/api/app/models/group.rb b/services/api/app/models/group.rb
index f05571651d..0e857ad15c 100644
--- a/services/api/app/models/group.rb
+++ b/services/api/app/models/group.rb
@@ -5,6 +5,9 @@ class Group < ArvadosModel
   include KindAndEtag
   include CommonApiTemplate
   include CanBeAnOwner
+  after_create :invalidate_permissions_cache
+  after_update :maybe_invalidate_permissions_cache
+  before_create :assign_name
 
   api_accessible :user, extend: :common do |t|
     t.add :name
@@ -12,4 +15,26 @@ class Group < ArvadosModel
     t.add :description
     t.add :writable_by
   end
+
+  def maybe_invalidate_permissions_cache
+    if uuid_changed? or owner_uuid_changed?
+      # This can change users' permissions on other groups as well as
+      # this one.
+      invalidate_permissions_cache
+    end
+  end
+
+  def invalidate_permissions_cache
+    # Ensure a new group can be accessed by the appropriate users
+    # immediately after being created.
+    User.invalidate_permissions_cache
+  end
+
+  def assign_name
+    if self.new_record? and (self.name.nil? or self.name.empty?)
+      self.name = self.uuid
+    end
+    true
+  end
+
 end