Define UserGeo#clear_user_geo.

dashboard/app/models/user_geo.rb

@@ -22,4 +22,13 @@
 #
 
 class UserGeo < ActiveRecord::Base
+  def clear_user_geo
+    self.ip_address = nil
+    self.city = nil
+    self.postal_code = nil
+    self.latitude = nil
+    self.longitude = nil
+
+    save!
+  end
 end

dashboard/test/models/user_geo_test.rb

@@ -0,0 +1,24 @@
+require 'test_helper'
+
+class UserGeoTest < ActiveSupport::TestCase
+  test 'clear_user_geo clears data' do
+    user_geo = UserGeo.create(
+      user_id: (create :user).id,
+      ip_address: '127.0.0.1',
+      city: 'Seattle',
+      state: 'Washington',
+      country: 'United States',
+      postal_code: '98104',
+      latitude: 2.123,
+      longitude: 18.123
+    )
+    user_geo.clear_user_geo
+    assert_nil user_geo.ip_address
+    assert_nil user_geo.city
+    assert_nil user_geo.postal_code
+    assert_nil user_geo.latitude
+    assert_nil user_geo.longitude
+    refute_nil user_geo.state
+    refute_nil user_geo.country
+  end
+end