* Remove slash characters from user supplied user search input
Prevents an error when the search term includes '\'
PG::SyntaxError: ERROR: syntax error in tsquery
https://app.honeybadger.io/projects/66984/faults/79391397
I had originally thought to add this cleanup to Search::Username but
decided to move it as close to the generated (invalid) query as
possible to prevent alternate paths finding their way here.
* Add spec
Since there's no existing tests for the scope - I put the test code on
the caller (Search::Username) rather than the model (User), this seems reasonable.
* When the term is empty (or only slashes) just return null relation
* Handle nil input (search for nothing) correctly
One of the request specs sends a username search with no query, so we
can't call nil.delete or nil.empty?, use blank? of empty?
c879c5b3d8