no perder las coordenadas al guardar!

app/models/metadata_geo.rb

@@ -7,7 +7,7 @@ class MetadataGeo < MetadataTemplate
   end
 
   def empty?
-    self[:value].nil? || value == default_value
+    value == default_value
   end
 
   def to_param
@@ -17,10 +17,7 @@ class MetadataGeo < MetadataTemplate
   def save
     return true if empty?
 
-    self[:value] = {
-      'lat' => self[:value]['lat'].to_f,
-      'lng' => self[:value]['lng'].to_f
-    }
+    self[:value] = value.transform_values(&:to_f)
 
     true
   end