CODEWITHSUNDEEP
ruby-on-railsruby-on-rails-3google-analytics
iCyborg
iCyborg

Reputation: 4728

How to track users in Rails using Google Analytics

I am using the following google analytics code to track users in my Ruby on Rails 4 app 

    // ga('create', 'UA-1234567-1', 'auto');
    ga('create', 'UA-1234567-1', 'auto', { 'userId': <%= current_user.id %> });
    // ga('set', '&uid', <%= current_user.id %>); // Set the user ID using signed-in user_id.
    ga('send', 'pageview');

but I am getting the error

undefined method `id' for nil:NilClass

for the line 

ga('create', 'UA-1234567-1', 'auto', { 'userId': <%= current_user.id %> });

I am following this thread How do I set USER_ID in Google Universal Analytics tracking code in Rails? and official doc https://developers.google.com/analytics/devguides/collection/analyticsjs/cookies-user-id but not sure what is going wrong as it is almost same code.

Upvotes: 0

Views: 916

Answers (2)

NM Pennypacker
NM Pennypacker

Reputation: 6942

I'd recommend sending a zero in the case of an anonymous user since this condition will never exist in your production database. That way you can still track those users if you ever decide you need to.

If you're fine doing that then this should do the trick:

ga('create', 'UA-1234567-1', 'auto', {'userId': <%= user_signed_in? ? current_user.id : 0 %>})

Here's a link to the documentation for user_signed_in? https://github.com/plataformatec/devise#controller-filters-and-helpers

Upvotes: 0

Anand
Anand

Reputation: 6531

Add a check condition for logged_in user only - 

<% if current_user.present? %>
 <script>
  //analytics stuffs

   ga('create', 'UA-1234567-1', 'auto', { 'userId': <%= current_user.id %> }); // Set the user ID using signed-in user_id.
   ga('send', 'pageview');
 </script>
<% end %>

Or 

 <script>
  //analytics stuffs

   ga('create', 'UA-1234567-1', 'auto', { 'userId': <%= current_user.present? ? current_user.id : nil %> }); // Set the user ID using signed-in user_id.
   ga('send', 'pageview');
 </script>

Upvotes: 1

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