# Package =TWiki::UI::Upload UI delegate for attachment management functions
## [[StaticMethod]] **attach** `($session)` `attach` command handler. This method is designed to be invoked via the `UI::run` method. Generates a prompt page for adding an attachment. ## [[StaticMethod]] **upload** `($session)` `upload` command handler. This method is designed to be invoked via the `UI::run` method. CGI parameters, passed in $query:
hidefile if defined, will not show file in attachment table
filepath  
filename  
filecomment comment to associate with file in attachment table
createlink if defined, will create a link to file at end of topic
changeproperties  
redirectto URL to redirect to after upload. {AllowRedirectUrl} must be enabled in configure. The parameter value can be a TopicName, a Web.TopicName, or a URL. Redirect to a URL only works if it is enabled in configure.
Does the work of uploading a file to a topic. Designed to be useable for a crude RPC (it will redirect to the 'view' script unless the 'noredirect' parameter is specified, in which case it will print a message to STDOUT, starting with 'OK' on success and 'ERROR' on failure.