loguear errores

app/controllers/readings_controller.rb

@@ -12,7 +12,6 @@ class ReadingsController < ActionController::API
     end
 
     Reading.transaction do
-      reading = raspberry.readings.build reading_params
       reading.id = params[:transaction_uuid]
       reading.signature = request.headers[:'X-Signature']
       reading.raw_transaction  = request.raw_post
@@ -79,10 +78,20 @@ class ReadingsController < ActionController::API
                                       end
   end
 
+  def reading
+    @reading ||= raspberry.readings.build reading_params
+  end
+
   # Procesa los parámetros de un sensor
   def sensor_params(sensor)
     sensor.permit(:timestamp, :type, :value, :unit, :error).tap do |p|
       p[:local_type] = p.delete :type
     end
   end
+
+  def append_info_to_payload(payload)
+    super
+
+    payload[:errors] = reading.try(:errors).try(:full_messages)
+  end
 end

config/environments/production.rb

@@ -76,6 +76,12 @@ Rails.application.configure do
   # Log Rage
   config.lograge.enabled = true
 
+  config.lograge.custom_options = lambda do |event|
+    next {} unless event.payload[:errors].present?
+
+    { errors: event.payload[:errors].try(:join, ', ') }
+  end
+
   # Use default logging formatter so that PID and timestamp are not suppressed.
   config.log_formatter = ::Logger::Formatter.new