Clarification on how to use “thumbs_up” voting gem with Rails 3

Question

I am attempting to implement the thumbs_up voting gem on a Rails 3 app, however the instructions are unclear on the actual implementation. After requiring the gem [g

Answer 1

Routing Error

No route matches {:action=>"vote_up", :controller=>"microposts", :id=>nil}

this is the link I am using and assume this is where the routing isn't being specified correctly. I ran rake routes and there is a route called vote_up_micropost. Is there anything else I should look into. Thank you

here is the link I added

<%= link_to('vote for this post!',
    vote_up_micropost_path(@microposts),
    :method => :post) %>