ASIHttpRequest - how to convert NSDictionary of params to url-encoded query param string?

Question

What is the preferred way to make a GET request with ASIHttpRequest using query params provided as an NSDictionary. How do I get from NSDictionary *params
to ?param1=value1&param2=value2 (percent-encoded)

Obviously I can construct the query part of the URL manually but it seems like there is probably a better way.

Thanks!

Answer 1

You must pass the query string as part of the URL. From the ASIHTTPRequest interface on GitHub:

// The url for this operation, should include GET params in the query string where appropriate
NSURL *url; 

If you don't want to roll your own dictionary-to-query-string method, take a look at the GTMNSDictionary+URLArguments category in Google Toolbox for Mac (.h, .m). It adds a method, gtm_httpArgumentString, to NSDictionary that should be what you're after.