luci-app-statistics: check that uci config sections exist

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

diff --git a/applications/luci-app-statistics/luasrc/statistics/datatree.lua b/applications/luci-app-statistics/luasrc/statistics/datatree.lua
index 806b054..5176a19 100644 (file)
--- a/applications/luci-app-statistics/luasrc/statistics/datatree.lua
+++ b/applications/luci-app-statistics/luasrc/statistics/datatree.lua
@@ -13,9 +13,17 @@ local sections = uci:get_all("luci_statistics")
 Instance = util.class()
 
 function Instance.__init__( self, host )
-       self._host    = host or sections.collectd.Hostname or sys.hostname()
-       self._libdir  = sections.collectd.PluginDir        or "/usr/lib/collectd"
-       self._rrddir  = sections.collectd_rrdtool.DataDir  or "/tmp/rrd"
+       self._host    = host or sys.hostname()
+       self._libdir  = "/usr/lib/collectd"
+       self._rrddir  = "/tmp/rrd"
+
+       if sections and sections.collectd then
+               self._host    = host or sections.collectd.Hostname or sys.hostname()
+               self._libdir  = sections.collectd.PluginDir        or "/usr/lib/collectd"
+       end
+       if sections and sections.collectd_rrdtool then
+               self._rrddir  = sections.collectd_rrdtool.DataDir  or "/tmp/rrd"
+       end
 
        self._libdir  = self._libdir:gsub("/$","")
        self._rrddir  = self._rrddir:gsub("/$","")