def act_as_system_user
if block_given?
- user_was = Thread.current[:user]
- Thread.current[:user] = system_user
- begin
+ act_as_user system_user do
yield
- ensure
- Thread.current[:user] = user_was
end
else
Thread.current[:user] = system_user
end
end
+ def act_as_user user
+ user_was = Thread.current[:user]
+ Thread.current[:user] = user
+ begin
+ yield
+ ensure
+ Thread.current[:user] = user_was
+ end
+ end
+
def anonymous_group
if not $anonymous_group
act_as_system_user do
$anonymous_user
end
+ def empty_collection_uuid
+ 'd41d8cd98f00b204e9800998ecf8427e+0'
+ end
+
+ def empty_collection
+ if not $empty_collection
+ act_as_system_user do
+ ActiveRecord::Base.transaction do
+ $empty_collection = Collection.
+ where(portable_data_hash: empty_collection_uuid).
+ first_or_create!(manifest_text: '', owner_uuid: anonymous_group.uuid)
+ end
+ end
+ end
+ $empty_collection
+ end
end