Iteratively creating multiple file input fields in Rails

Question

I have a column of product views in a database (e.g. top, bottom, front, back). I'm trying to generate a series of file inputs to allow the user to upload an image for each view. This is the result I'm after:

...
<label>Top</label>
<input type="file" name="image[Top]"><br>
<label>Bottom</label>
<input type="file" name="image[Bottom]"><br>
<label>Front</label>
<input type="file" name="image[Front']"><br>
...

This is what I'm trying:

<%= views = View.order('name ASC').all.map { |view| [view.name, view.id] } %>
<%= views.each { |view| label(view); file_field('image', view) } %>

However, all this does is print out the views array a couple of times. Hopefully you Rails experts can point me in the right direction. (I apologize in advance if I'm butchering Ruby.)

I don't have a suggestion, but the first line in your try shouldn't have <%=, change it to <% views = ... — 244an
– 244an, Commented Nov 20, 2012 at 22:47

R Milushev · Accepted Answer · 2012-11-21 07:57:35Z

2

I'd suggest to move your logic out of the view into controller or helper method . Your views_controller.rb :

@views = View.all.order('name ASC')

This gives you an array of instance objects , which means you can access the view name simply by :

@views.each do |v|
   var = v.name
# other code for iterating on View ...
end

Now , in your view (which should be a form_for or form_tag , so you can choose images and upload them ), you can :

<%= form_for(@catalogue) do |f| %>
  <%= @views.each do |v| %>
    <%= f.label v.name %>    < br/ >  
    <%= f.file_field v.name %>
  <% end %>

  <% f.submit %>

<% end %>

edited Nov 21, 2012 at 7:57

answered Nov 20, 2012 at 22:57

R Milushev

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