libs/web: Added luci.web.dispatcher.registered

diff --git a/libs/web/luasrc/dispatcher.lua b/libs/web/luasrc/dispatcher.lua
index 735e2a7150c6e6bb28255217882e989ef0d15056..756f3cc7d50f1f4dabf50dcc735666bb6a141518 100644 (file)
--- a/libs/web/luasrc/dispatcher.lua
+++ b/libs/web/luasrc/dispatcher.lua
@@ -324,6 +324,20 @@ function entry(path, target, title, order)
        return c
 end
 
+-- Checks whether a node exists
+function registered(...)
+       local c = context.tree
+
+       for k,v in ipairs(arg) do
+               if not c.nodes[v] then
+                       return false
+               end
+
+               c = c.nodes[v]
+       end
+       return true
+end
+
 -- Fetch a dispatching node
 function node(...)
        local c = context.tree