I’ve noticed that if I did not include ‘partial:’ before my partial path, like so:
<%= render 'my_partial', :locals => {:class_Name => "Science", :y => 36} %>
I was required to use the hash+symbol in my partial to access the desired values as others have noted.
<div>
<h1> <%= locals[:class_Name] %> has a y value of <%= locals[:y] %></h1>
</div>
However, including ‘partial:’ before my partial path:
<% render partial: 'my_partial', :locals => {:class_Name => 'Science', :y => 36 } %>
…allowed me to simply call the hash values directly.
<div>
<h1><%= class_Name %> has a y value of <%= y %></h1>
</div>
Just something to keep in mind, this issue tripped me up for awhile when trying to send the locals hash to my partial.