FIX: UserProfileView: Do not log IP of logged-in users

app/models/user_profile_view.rb

@@ -1,5 +1,5 @@
 class UserProfileView < ActiveRecord::Base
-  validates_presence_of :user_profile_id, :ip_address, :viewed_at
+  validates_presence_of :user_profile_id, :viewed_at
 
   belongs_to :user_profile
 
@@ -9,6 +9,7 @@ class UserProfileView < ActiveRecord::Base
     if user_id
       return if user_id < 1
       redis_key << ":user-#{user_id}"
+      ip = nil
     else
       redis_key << ":ip-#{ip}"
     end
@@ -59,13 +60,12 @@ end
 #  id              :integer          not null, primary key
 #  user_profile_id :integer          not null
 #  viewed_at       :datetime         not null
-#  ip_address      :inet             not null
+#  ip_address      :inet
 #  user_id         :integer
 #
 # Indexes
 #
 #  index_user_profile_views_on_user_id          (user_id)
 #  index_user_profile_views_on_user_profile_id  (user_profile_id)
-#  unique_profile_view_ip                       (viewed_at,ip_address,user_profile_id) UNIQUE
-#  unique_profile_view_user                     (viewed_at,user_id,user_profile_id) UNIQUE
+#  unique_profile_view_user_or_ip               (viewed_at,user_id,ip_address,user_profile_id) UNIQUE
 #

db/migrate/20180521191418_allow_null_ip_user_profile_view.rb

@@ -0,0 +1,25 @@
+class AllowNullIpUserProfileView < ActiveRecord::Migration[5.1]
+  def up
+    begin
+      Migration::SafeMigrate.disable!
+      change_column :user_profile_views, :ip_address, :inet, null: true
+    ensure
+      Migration::SafeMigrate.enable!
+    end
+
+    remove_index :user_profile_views,
+      column: [:viewed_at, :ip_address, :user_profile_id],
+      name: :unique_profile_view_ip,
+      unique: true
+    remove_index :user_profile_views,
+      column: [:viewed_at, :user_id, :user_profile_id],
+      name: :unique_profile_view_user,
+      unique: true
+    add_index :user_profile_views, [:viewed_at, :user_id, :ip_address, :user_profile_id],
+      name: :unique_profile_view_user_or_ip,
+      unique: true
+  end
+
+  def down
+  end
+end

spec/models/user_profile_view_spec.rb

@@ -34,6 +34,8 @@ RSpec.describe UserProfileView do
     ['1.1.1.1', '2.2.2.2'].each do |ip|
       add(user_profile_id, ip, other_user.id, time)
       expect(described_class.count).to eq(1)
+      # should not actually log IPs
+      expect(UserProfileView.where(user_id: other_user.id).count(:ip_address)).to eq(0)
     end
   end