I don't seem to be able to pass a variable to my partial template in rails (2.3.5). My code is as follows;

In the main view .html.erb file:

<% f.fields_for :payments do |payment_form| %>
    <%= render 'payment', {:f => payment_form, :t => "test" } %>
<% end %>

and in the _payment.html.erb file:

<%= t %>

produces a wrong number of arguments (0 for 1) error. The payment_form object is being passed to the partial as f without any problems. I've tried a number of variations on the above syntax (e.g. :locals => {:f => payment_form, :t => "test" } without success. I presume I'm doing something pretty basic wrong but just can't see it.