rontolisp:query-params

(rontolisp:query-params query)

Parses a query string such as "a=1&b=two&flag" into an alist of (key . value) string pairs. Keys and values are url-decoded with rontolisp:url-decode; a key without = gets the value ""; duplicate keys are preserved in order; empty segments are skipped. nil (a request without a query string) yields nil, so (rontolisp:query-params (getf request :query)) is always safe inside an rontolisp:http-handler handler.

The alist prints readably and works with assoc:

Backend support

Works on every backend and in every WASM mode (Preview 1 included): the library is written in rontolisp itself and is compiled into the program when used. For the common "value of one name" lookup use rontolisp:query-param.