'000000000000000'].join('-')
end
+ def anonymous_group_uuid
+ [Server::Application.config.uuid_prefix,
+ Group.uuid_prefix,
+ 'anonymouspublic'].join('-')
+ end
+
+ def anonymous_user_uuid
+ [Server::Application.config.uuid_prefix,
+ User.uuid_prefix,
+ 'anonymouspublic'].join('-')
+ end
+
def system_user
if not $system_user
real_current_user = Thread.current[:user]
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
+ ActiveRecord::Base.transaction do
+ $anonymous_group = Group.
+ where(uuid: anonymous_group_uuid).first_or_create do |g|
+ g.update_attributes(name: "Anonymous group",
+ description: "Anonymous group")
+ end
+ end
+ end
+ end
+ $anonymous_group
+ end
+
+ def anonymous_user
+ if not $anonymous_user
+ act_as_system_user do
+ $anonymous_user = User.where('uuid=?', anonymous_user_uuid).first
+ if !$anonymous_user
+ $anonymous_user = User.new(uuid: anonymous_user_uuid,
+ is_active: false,
+ is_admin: false,
+ email: 'anonymouspublic',
+ first_name: 'anonymouspublic',
+ last_name: 'anonymouspublic')
+ $anonymous_user.save!
+ $anonymous_user.reload
+ end
+
+ group_perms = Link.where(tail_uuid: anonymous_user_uuid,
+ head_uuid: anonymous_group_uuid,
+ link_class: 'permission',
+ name: 'can_read')
+
+ if !group_perms.any?
+ group_perm = Link.create!(tail_uuid: anonymous_user_uuid,
+ head_uuid: anonymous_group_uuid,
+ link_class: 'permission',
+ name: 'can_read')
+ end
+ end
+ end
+ $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