++ edited to change the question to call partial recursively ++
I am writing this question after a lot of days of frustration about this simple piece of code which isn't working. I have read numerous issues with passing partials on stackoverflow and tried all the solutions I could but it doesn't work. Calling the partial works for the first loop but from second onwards it bombs with an error "undefined local variable or method `count' for #<#:0x2f12670>" Notice here that the error contains a class within a class, so something fishy is happening when the partial is being called recursively.
I have a partial called _form.html.erb which calls another partial _rule_action_fields.html.erb. I need to pass a variable from the form partial to the rule_action_field partial and here is the code:
_form.html.erb: (Please note that the builder object here is being passed from code I have not pasted)
<% @folder_count = 1 %>
<% @rule.rule_actions.each do |ruleaction| %>
<%= f.fields_for :rule_actions, ruleaction do |builder| %>
<%= render( :partial => 'rule_action_fields', :locals => { :f => builder, :count => @folder_count } ) %>
<% end %>
<% @folder_count = @folder_count + 1 %>
<% end %>
_rule_action_fields.html.erb
<p id="folder_fields">
<%= count %>
<label class="form_label">Move the files to </label>
<%= f.select(:folder_id, current_user.folders.collect { |p| [p.name,p.id] }, {:include_blank => true } ) %>
</p>
Unfortunately I cant call this partial with a collection of rule_actions because of some logic which is partially in the calling code and partially in the rule_action_fields partial.
Other syntax I have tried:
<%= render :partial => 'rule_action_fields',:f => builder, :locals => { :count => folder_count } %>
<%= render :partial => 'rule_action_fields', locals => { :count => folder_count } %>
<%= render 'rule_action_fields', :count => folder_count %>
Any ideas?