* luci/statistics: implement a more advanced diagram generator in rrdtool.lua, simpli...

[project/luci.git] / applications / luci-statistics / luasrc / statistics / datatree.lua

diff --git a/applications/luci-statistics/luasrc/statistics/datatree.lua b/applications/luci-statistics/luasrc/statistics/datatree.lua
index 957b230..82e7a28 100644 (file)
--- a/applications/luci-statistics/luasrc/statistics/datatree.lua
+++ b/applications/luci-statistics/luasrc/statistics/datatree.lua
@@ -123,11 +123,13 @@ function Instance.data_types( self, plugin, instance )
        return rv
 end
 
-function Instance.data_instances( self, plugin, instance, type )
+function Instance.data_instances( self, plugin, instance, dtype )
        local rv = { }
 
-       for i, instance in ipairs( self._plugins[plugin][instance][type] ) do
-               table.insert( rv, instance )
+       if type(self._plugins[plugin][instance][dtype]) == "table" then
+               for i, instance in ipairs( self._plugins[plugin][instance][dtype] ) do
+                       table.insert( rv, instance )
+               end
        end
 
        return rv