campo que no existe localmente

app/controllers/readings_controller.rb

@@ -6,13 +6,14 @@ class ReadingsController < ActionController::API
 
   # @see {https://docutopia.tupale.co/sutty:nodemecu:api}
   def create
+    Reading.transaction do
       reading = raspberry.readings.build reading_params
       reading.id = params[:transaction_uuid]
       # TODO: Verificar firma
       reading.signature = headers[:'X-Signature']
 
       params[:arduinos]&.each do |a|
-      arduino = reading.arduinos.build local_id: a[:id]
+        arduino = reading.arduinos.build local_id: a[:id], raspberry: raspberry
 
         a[:sensores]&.each do |s|
           arduino.sensors.build(sensor_params s)
@@ -20,11 +21,12 @@ class ReadingsController < ActionController::API
       end
 
       if reading.save
-      render plain: reading.uuid, status: :ok
+        render plain: reading.id, status: :ok
       else
         head :bad_request
       end
     end
+  end
 
   private
 
@@ -33,13 +35,12 @@ class ReadingsController < ActionController::API
   end
 
   def raspberry
-    @raspberry ||= Raspberry.find_or_create_by! params[:controller_id]
+    @raspberry ||= Raspberry.find_or_create_by! name: params[:controller_id]
   end
 
   # Procesa la transacción
   def reading_params
-    @reading_params ||= params.permit(:controller_id,
+    @reading_params ||= params.permit(:timestamp,
-                                      :timestamp,
                                       :error_code,
                                       :battery_status,
                                       :sample,
@@ -49,7 +50,9 @@ class ReadingsController < ActionController::API
 
   # Procesa los parámetros de un sensor
   def sensor_params(sensor)
-    sensor.permit(:timestamp, :type, :value, :unit, :error)
+    sensor.permit(:timestamp, :type, :value, :unit, :error).tap do |p|
+      p[:local_type] = p.delete :type
+    end
   end
 end
 

app/models/arduino.rb

@@ -3,5 +3,5 @@
 class Arduino < ApplicationRecord
   belongs_to :raspberry
   belongs_to :reading
-  has_many :sensores
+  has_many :sensors
 end

db/migrate/20220303170429_change_local_id_to_string.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class ChangeLocalIdToString < ActiveRecord::Migration[6.1]
+  def change
+    change_column :arduinos, :local_id, :string
+  end
+end

db/migrate/20220303170706_change_type.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class ChangeType < ActiveRecord::Migration[6.1]
+  def change
+    rename_column :sensors, :type, :local_type
+  end
+end

db/migrate/20220303170801_add_error_to_sensor.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class AddErrorToSensor < ActiveRecord::Migration[6.1]
+  def change
+    add_column :sensors, :error, :integer
+  end
+end