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I have a model with an array column (box_ids). In my view I would like to have a field for each of the values in the array and three extra empty fields to be able to add new values to the array. How to go about this? I have the following:

  <%= f.fields_for "box_ids[]", @shop do |bid| %>
    <div class="form-group">
      <%= bid.label :box_id %> Box ID: <%= bid.text_field [WHAT HERE] %>
    </div>
  <% end %>

I don't know if this is the right approach but in any case I have no method to supply to text_field.

Any suggestions?

Edit:

This works:

  <% @shop.box_ids.each  do |bid| %>
    <div class="form-group">
      <%= label_tag :box_id %> Box ID: <%= text_field_tag "box_ids[]", bid %>
    </div>
  <% end %>
  <% 3.times do %>
    <div class="form-group">
      <%= label_tag :box_id %> Box ID: <%= text_field_tag "box_ids[]" %>
    </div>
  <% end %>

But that requires special handling in the controller - I would like to avoid that if possible.

share|improve this question
    
can you inspect bid? –  emaillenin Jun 18 at 9:38
    
Yes - it is an ActionView::Helpers::FormBuilder –  jriff Jun 18 at 9:40
    
And bid.object is a Shop class. –  jriff Jun 18 at 9:41

1 Answer 1

up vote 0 down vote 
  <%= f.fields_for "box_ids[]", @shop do |bid| %>
    <div class="form-group">
      <%= bid.label :box_id %> Box ID: <%= bid.text_field :box_ids %>
    </div>
  <% end %>
share|improve this answer
    
Thanks for your suggestion. But that just gives: undefined method `1' for #<Shop:0x007faf763f3720> –  jriff Jun 18 at 9:48
    
try box_ids directly –  emaillenin Jun 18 at 10:04
    
That just gives me {1,2,3} in the text field. –  jriff Jun 18 at 10:07
    
try updating that single textbox value to {4,5,6} and save. check in DB if it works. –  emaillenin Jun 18 at 10:08
    
It works. BTW. see my edit to the OQ. –  jriff Jun 18 at 10:09

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