x.vweb: accept query params as method arguments (#21201)

vlib/x/vweb/tests/vweb_test.v

@@ -249,6 +249,12 @@ fn test_login_with_multipart_form_data_send_by_fetch() {
 	assert x.body == 'username: xmyusernamex | password: xmypassword123x'
 }
 
+fn test_query_params_are_passed_as_arguments() {
+	x := http.get('http://${localserver}/query_echo?c=3&a="test"&b=20')!
+	assert x.status() == .ok
+	assert x.body == 'a: x"test"x | b: x20x'
+}
+
 fn test_host() {
 	mut req := http.Request{
 		url: 'http://${localserver}/with_host'

vlib/x/vweb/tests/vweb_test_server.v

@@ -114,6 +114,11 @@ pub fn (mut app ServerApp) file_echo(mut ctx ServerContext) vweb.Result {
 	return ctx.text(ctx.files['file'][0].data)
 }
 
+@['/query_echo']
+pub fn (mut app ServerApp) query_echo(mut ctx ServerContext, a string, b int) vweb.Result {
+	return ctx.text('a: x${a}x | b: x${b}x')
+}
+
 // Make sure [post] works without the path
 @[post]
 pub fn (mut app ServerApp) json(mut ctx ServerContext) vweb.Result {

vlib/x/vweb/vweb.v

@@ -824,6 +824,8 @@ fn handle_route[A, X](mut app A, mut user_context X, url urllib.URL, host string
 
 				// Skip if the host does not match or is empty
 				if route.host == '' || route.host == host {
+					can_have_data_args := user_context.Context.req.method == .post
+						|| user_context.Context.req.method == .get
 					// Route immediate matches first
 					// For example URL `/register` matches route `/:user`, but `fn register()`
 					// should be called first.
@@ -836,12 +838,19 @@ fn handle_route[A, X](mut app A, mut user_context X, url urllib.URL, host string
 							}
 						}
 
-						if user_context.Context.req.method == .post && method.args.len > 1 {
-							// Populate method args with form values
+						if method.args.len > 1 && can_have_data_args {
+							// Populate method args with form or query values
 							mut args := []string{cap: method.args.len + 1}
+							data := if user_context.Context.req.method == .get {
+								user_context.Context.query
+							} else {
+								user_context.Context.form
+							}
+
 							for param in method.args[1..] {
-								args << user_context.Context.form[param.name]
+								args << data[param.name]
 							}
+
 							app.$method(mut user_context, args)
 						} else {
 							app.$method(mut user_context)
@@ -857,7 +866,24 @@ fn handle_route[A, X](mut app A, mut user_context X, url urllib.URL, host string
 							}
 						}
 
-						app.$method(mut user_context)
+						if method.args.len > 1 && can_have_data_args {
+							// Populate method args with form or query values
+							mut args := []string{cap: method.args.len + 1}
+
+							data := if user_context.Context.req.method == .get {
+								user_context.Context.query
+							} else {
+								user_context.Context.form
+							}
+
+							for param in method.args[1..] {
+								args << data[param.name]
+							}
+
+							app.$method(mut user_context, args)
+						} else {
+							app.$method(mut user_context)
+						}
 						return
 					}