Rename owned_items to contents, remove user method, update docs.

[arvados.git] / apps / workbench / app / models / collection.rb

diff --git a/apps/workbench/app/models/collection.rb b/apps/workbench/app/models/collection.rb
index bda5523d8cfdd9192aefc7923b9a7ba350f05e4e..5460e9a6e01641192b2ee0c9c0c12d9773e293e3 100644 (file)
--- a/apps/workbench/app/models/collection.rb
+++ b/apps/workbench/app/models/collection.rb
@@ -1,4 +1,12 @@
 class Collection < ArvadosBase
+
+  MD5_EMPTY = 'd41d8cd98f00b204e9800998ecf8427e'
+
+  # Return true if the given string is the locator of a zero-length blob
+  def self.is_empty_blob_locator? locator
+    !!locator.to_s.match("^#{MD5_EMPTY}(\\+.*)?\$")
+  end
+
   def total_bytes
     if files
       tot = 0
@@ -24,4 +32,5 @@ class Collection < ArvadosBase
   def used_by
     $arvados_api_client.api "collections/#{self.uuid}/", "used_by"
   end
+
 end