I tried to do it by myself, I've a model named Entry with a field named type_id (added via migration) and a model named EntryType with a field named description.
class Entry < ActiveRecord::Base belongs_to :entry_type ... end > class EntryType < ActiveRecord::Base has_many :entries end I added the following code line to my /_form.erb: <%= f.select('entry', 'type_id', EntryType.all.collect {|t| [t.description, > t.id]}, {:include_blanks => 'None'}) %> but when I try to load the page I get this exception: NoMethodError in Entries#new Showing *I:/Labs/RailsProjects/sisingresos/app/views/entries/_form.html.erb* where line *#18* raised: undefined method `merge' for [["Ordinario", 1], ["Especial", 2], ["Concejo Comunal", 3]]:Array Extracted source (around line *#18*): 15: </div> 16: <div class="field"> 17: <%= f.label t('entries.fields.type') %><br /> 18: <%= f.select('entry', 'type_id', EntryType.all.collect {|t| [t.description, t.id]}, {:include_blanks => 'None'}) %> 19: </div> 20: <div class="field"> 21: <%= f.label t('entries.fields.generalentrydate') %><br /> Trace of template inclusion: app/views/entries/new.html.erb Rails.root: I:/Labs/RailsProjects/sisingresos Application Trace <http://localhost:3000/entries/new#> | Framework Trace<http://localhost:3000/entries/new#> | Full Trace <http://localhost:3000/entries/new#> app/views/entries/_form.html.erb:18:in `block in _app_views_entries__form_html_erb__326164559_25362852_503356076' app/views/entries/_form.html.erb:1:in `_app_views_entries__form_html_erb__326164559_25362852_503356076' app/views/entries/new.html.erb:3:in `_app_views_entries_new_html_erb___750658673_25375572__1012098428' app/controllers/entries_controller.rb:23:in `new' Regards, -- TSU. Amador Cuenca -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To post to this group, send email to rubyonrails-talk@googlegroups.com. To unsubscribe from this group, send email to rubyonrails-talk+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.