Question

I feel like this should be really really simple, but I’m completely stuck!

In a form I might have a field like:

<%= f.text_field :name, :class => "text" %>

On edit, this pulls back in the value submitted on create, that’s fine. But I want to prevent certain fields from being edited. I know I can disable the field or hide it, but I’d like to be able to pull in the values to display and use in other ways. How do I access them?

In this case I’ve tried things like:

<%= f.track.name %>

<%= track.name %>

<%= @track.name %>

But none of the above work!

Any ideas folks?

EDIT: (I’m using nested forms for this)

<%= form_for(@release, :html => { :multipart => true }) do |f| %>
    <h3>Upload Tracks for <%= @release.title %></h3>

    <%= f.fields_for :tracks do |builder| %>
    <%= render 'upload_track_fields', :f => builder %>
    <% end %>

<%= f.submit "Upload Tracks", :class => "submit" %>    
<% end %>

And the upload_track_fields that are rendered:

<%= f.text_field :position, :class => "text" %>
<%= f.text_field :name, :class => "text" %>
<%= f.text_field :isrc, :class => "text" %>
<%= f.text_field :version, :class => "text" %>
<%= f.file_field :track, :class => "text" %>
<%= f.hidden_field :primary_genre_id %>
<%= f.hidden_field :secondary_genre_id %>
<%= f.hidden_field :alt_primary_genre %>
<%= f.hidden_field :alt_secondary_genre %>
<%= f.hidden_field :asset_tier %>
<%= f.hidden_field :preview_start %>
<%= f.hidden_field :parental_advisory %>
<%= f.hidden_field :available_separately %>
<%= f.hidden_field :_destroy %>

I’ve hidden most of the fields to prevent editing, but still need to see some of the fields so they’re left as text fields. I tried to disable them, but that stops any changes (specifically the file upload) working.

In short, i’d prefer to display most of the above as text rather than form fields.

Answer 1

In the main form:

<% index = 0 %>
<% f.fields_for :tracks do |builder| %>
  <%= @release.tracks[index].name %>
  <%= render 'upload_track_fields', :f => builder %>
  <% index += 1 %>
<% end %>

In the nested form:

<%= f.text_field :position, :class => "text" %>
# Notice that there's no "name" attribute
<%= f.text_field :isrc,     :class => "text" %>
<%= f.text_field :version,  :class => "text" %>
<%= f.file_field :track,    :class => "text" %>

What I did in the first snippet is dirty, but I never used fields_for so I don’t know how to get the actual index. I looked in Google, but I didn’t find a solution so far.

I can’t try it right now, I’ll do it when I’ll be home.
I suggest using this while finding a way to get the index.

Good luck!