Select not maintaining state on nested form with

rubyonrails-talk
1

I am using nested forms with multiple instances of various of the forms. The problem I cant figure out is how to maintain state for the select between postbacks. I am using ‘options_from_collection_for_select’ and in this the last param is to be the selected value, but given the dynamic nature, the value is going to depend on the iteration of the form builder. If I manually force a selected value, it works, so I know this has to be the answer, as if I do not use this last param, I get no maintained state.

What also gets me is that if I use a manual array rather than options_from_collection_for_select, i.e. [ [‘hr’,1], [‘rbi’],2 …], rails maintains the state for me… I guess I could at the controller manually create this from the model but that is disgusting and counter to why there would be a helper… So open to suggestions. I have also tried collection_select with no luck.

<%= s.select :statistic_type_id, options_from_collection_for_select(StatisticType.all, :id, :name, selected_value_here),

This is part of the context:

<%= b.fields_for :players do |p| %>
    <%= p.label :player_id %>
    <%= collection_select :p, :player_id, Player.all, :id, :last_name, :include_blank => true %><br>

     <%= p.fields_for :statistics do |s| %>
            <%= s.label :statistic_id %>
            <%= s.select :statistic_type_id, options_from_collection_for_select(StatisticType.all, :id, :name, selected_value_here), :include_blank => true %>
            <%= s.text_field :value %><br>
     <% end %>

<% end %>