Which variable can be used in the blank?Beginner

<%= @topic_view.topic.title %>
<%= @topic_view.topic.average_rating %> <%= @topic_view.topic.posts.count { |p| !!p.custom_fields['rating'] } %>

Can somebody explain such a solution?

you should have just seen something about scope of variables, if you return there to reread that prt, can yu figure it out on your own?

please apply Read-Search-Ask

Your answers are useless.If u dont want to help-dont help,why to write anything?Just ignore the question !