Rails 4 - passing variable to partial

Question

I am following the Ruby on Rails tutorial and have come across a problem while trying to pass variables to partials.

My _user partial is as follows

Answer 1

You need the full render partial syntax if you are passing locals

<%= render @users, :locals => {:size => 30} %>

Becomes

<%= render :partial => 'users', :collection => @users, :locals => {:size => 30} %>

Or to use the new hash syntax

<%= render partial: 'users', collection: @users, locals: {size: 30} %>

Which I think is much more readable