actionpack/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb
<header>
<h1>
<%= @exception_wrapper.exception_class_name %>
<% if params_valid? && @request.parameters['controller'] %>
in <%= @request.parameters['controller'].camelize %>Controller<% if @request.parameters['action'] %>#<%= @request.parameters['action'] %><% end %>
<% end %>
</h1>
</header>
<main role="main" id="container">
<%= render "rescues/message_and_suggestions", exception: @exception, exception_wrapper: @exception_wrapper %>
<%= render "rescues/actions", exception: @exception, request: @request, exception_wrapper: @exception_wrapper %>
<%= render "rescues/source", source_extracts: @source_extracts, show_source_idx: @show_source_idx, error_index: 0 %>
<%= render "rescues/trace", traces: @traces, trace_to_show: @trace_to_show, error_index: 0 %>
<% if @exception_wrapper.has_cause? %>
<h2>Exception Causes</h2>
<% end %>
<% @exception_wrapper.wrapped_causes.each.with_index(1) do |wrapper, index| %>
<div class="details">
<a class="summary" href="#" onclick="return toggle(<%= wrapper.exception_id %>)">
<%= wrapper.exception_class_name %>: <%= h wrapper.message %>
</a>
</div>
<div id="<%= wrapper.exception_id %>" class="hidden">
<%= render "rescues/source", source_extracts: wrapper.source_extracts, show_source_idx: wrapper.source_to_show_id, error_index: index %>
<%= render "rescues/trace", traces: wrapper.traces, trace_to_show: wrapper.trace_to_show, error_index: index %>
</div>
<% end %>
<%= render template: "rescues/_request_and_response" %>
</main>