validaciones

app/models/arduino.rb

@@ -4,4 +4,6 @@ class Arduino < ApplicationRecord
   belongs_to :raspberry
   belongs_to :reading
   has_many :sensors
+
+  validates_presence_of :local_id
 end

app/models/raspberry.rb

@@ -3,4 +3,7 @@
 class Raspberry < ApplicationRecord
   has_many :readings
   has_many :arduinos
+
+  validates_presence_of :name
+  validates_uniqueness_of :name
 end

app/models/sensor.rb

@@ -2,4 +2,6 @@
 
 class Sensor < ApplicationRecord
   belongs_to :arduino
+
+  validates_presence_of :timestamp, :local_type, :value, :unit
 end