Handle empty fields correctly

diff --git a/libs/cbi/luasrc/cbi.lua b/libs/cbi/luasrc/cbi.lua
index 2d439b8..c1e4a76 100644 (file)
--- a/libs/cbi/luasrc/cbi.lua
+++ b/libs/cbi/luasrc/cbi.lua
@@ -1174,7 +1174,12 @@ function AbstractValue.parse(self, section)
        if fvalue and #fvalue > 0 then -- If we have a form value, write it to UCI
                fvalue = self:transform(self:validate(fvalue, section))
                if not fvalue then
-                       self.tag_invalid[section] = true
+                       if self.error then
+                               self.error[section] = "invalid"
+                       else
+                               self.error = { [section] = "invalid" }
+                       end
+                       self.map.save = false
                end
                if fvalue and not (fvalue == cvalue) then
                        if self:write(section, fvalue) then
@@ -1190,8 +1195,14 @@ function AbstractValue.parse(self, section)
                                self.section.changed = true
                                --luci.util.append(self.map.events, self.events)
                        end
-               elseif self.track_missing and (not fvalue or fvalue ~= cvalue) then
-                       self.tag_missing[section] = true
+               elseif cvalue ~= fvalue then
+                       self:write(section, fvalue)
+                       if self.error then
+                               self.error[section] = "missing"
+                       else
+                               self.error = { [section] = "missing" }
+                       end
+                       self.map.save = false
                end
        end
 end