Add validations

app/models/hydrant.rb

@@ -1,4 +1,5 @@
 class Hydrant < ActiveRecord::Base
+  validates_presence_of :lat, :lng
   belongs_to :user
 
   def self.find_closest(lat, lng, limit=50)

app/models/user.rb

@@ -1,5 +1,6 @@
 class User < ActiveRecord::Base
   devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable
   attr_accessible :email, :name, :organization, :voice_number, :sms_number, :password, :password_confirmation, :remember_me
+  validates_presence_of :name
   has_many :hydrants
 end