update / (site's index page) route and nav. menu update feature.

I hard-coded redirects to the pages which can't be deleted into the
site's index ('/' route). This allows them to be set as the home page
in the site's settings.

I, also, updated the data which is passed to
nera:update-nav-menu. This change is part of the Nav. Menu settings in
the site's settings.

src/web.lisp

@@ -34,18 +34,26 @@
 ;; Routing rules
 
 (defroute "/" ()
-  (if (not (uiop:file-exists-p (ritherdon-archive.config:database-name)))
-      (redirect "/setup")
-      (render #P"index.html"
-	      (append (if (hermetic:logged-in-p)
-			  (auth:auth-user-data))
-		      `(:alert ,(utils:get-and-reset-alert)
-			:nav-menu ,(nera:nav-menu-slugs)
-			:system-data ,(nera:system-data)
-			:content ,(storage:open-text-file
-				   "" "pages"
-				   (site-settings::home-page-of
-				    (nera:get-site-settings))))))))
+  (cond ((not (uiop:file-exists-p (ritherdon-archive.config:database-name)))
+	 (redirect "/setup"))	
+	((string= "archive" (site-settings::home-page-of (nera:get-site-settings)))
+	 (redirect "/archive"))
+	((string= "login" (site-settings::home-page-of (nera:get-site-settings)))
+	 (redirect "/login"))
+	((string= "pages" (site-settings::home-page-of (nera:get-site-settings)))
+	 (redirect "/pages"))
+	((string= "sign-up" (site-settings::home-page-of (nera:get-site-settings)))
+	 (redirect "/sign-up"))
+	(t (render #P"index.html"
+		   (append (if (hermetic:logged-in-p)
+			       (auth:auth-user-data))
+			   `(:alert ,(utils:get-and-reset-alert)
+			     :nav-menu ,(nera:nav-menu-slugs)
+			     :system-data ,(nera:system-data)
+			     :content ,(storage:open-text-file
+					"" "pages"
+					(site-settings::home-page-of
+					 (nera:get-site-settings)))))))))
 
 (defroute "/setup" ()
   ;; If there is no database, there is no user, hence no more checks.
@@ -226,8 +234,7 @@
 	 (hermetic:auth (:administrator)
 			;; Authorised
 			(progn
-			  (format t "~a" (cdr (assoc "page" _parsed :test #'string=)))
-			  (nera:update-nav-menu _parsed)
+			  (nera:update-nav-menu (cdr (assoc "NAV-MENU" _parsed :test #'string=)))
 			  (utils:set-alert "Nav. menu updated.")
 			  (redirect "/site-settings"))
 			;; Not Authorised