How to escape | for RAILS fields_for in ERB?

Question

In our rails 3.2 app, our view code (in simple_form) is stored in @erb_code and render it with inline as:

<%= simple_form_for @project do |f| %>

    <%= render inline: ERB.new(@erb_code).result(binding) %>

<% end %>

@erb_code is a string which stores the view code. There is a fields_for block in @erb_code which causes error. Here is the fields_for block:

  .........
    <%= f.simple_fields_for :contract do |builder| %>
      <%= render('contract', :f => builder)%>
    <% end %>
  ........

Here is the error:

(erb):17: syntax error, unexpected ')'
...ds_for :contract do |builder| ).to_s); _erbout.concat "     ...
...                               ^
(erb):21: syntax error, unexpected end-of-input, expecting ')'
...ut.force_encoding(__ENCODING__)
...            

) and .to_s were added after |builder| when rendering and those cause the error. Is it escape issue? If it is, how to escape |builder| and/or any other in ERB.new()?

Answer 1

Please try the following:

<%= simple_form_for @project do |f| %>

    <%= render inline: @erb_code, locals: {f: f} %>

<% end %>

i.e., without using ERB.new. Add more locals as the need be.

In past I have used render inline for similar purposes in Rails 3.2.13.