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#5745 ✓invalid
Diego Plentz

Deprecation problem with Errors#invalid?(attribute)

Reported by Diego Plentz | September 30th, 2010 @ 06:29 PM

It happens just with the "id" attribute. If I comment it out, it renders correctly

NoMethodError in Territories#show

Showing /xpto/app/views/territories/_form.html.erb where line #32 raised:

undefined method `invalid?' for {:id=>[]}:ActiveModel::Errors
Extracted source (around line #32):

30:               <div class="three-column">
31:                 <%= f.label :id %>
32:                 <%= f.text_field :id, :class => "txt" %>
33:               </div>
35:               <div class="three-column">

PS: using Rails 3, it's just give me a warning: DEPRECATION WARNING: Errors#invalid?(attribute) has been deprecated, use Errors#[attribute].any? instead. (called from block in app_views_regionsform_html_erb2157815937372262069_2170992780_2129561860386323192 at /xpto/app/views/regions/_form.html.erb:32)

Comments and changes to this ticket

  • David Trasbo

    David Trasbo October 9th, 2010 @ 04:14 PM

    • State changed from “new” to “invalid”
    • Importance changed from “” to “Low”

    Unable to reproduce on edge Rails:

    $ script/rails g controller territories new 
    $ script/rails g model territory 
    $ rake db:migrate


    <%= form_for @territory do |f| %>
      <%= f.label :id %>
      <%= f.text_field :id %>
    <% end %>


    class TerritoriesController < ApplicationController
      def new
        @territory =


    Ticket5745::Application.routes.draw do
      resources :territories

    A request to http://localhost:3000/territories/new renders correctly with no error messages:

    $ script/rails s
    => Booting WEBrick
    => Rails 3.1.0.beta application starting in development on
    => Call with -d to detach
    => Ctrl-C to shutdown server
    [2010-10-09 17:06:23] INFO  WEBrick 1.3.1
    [2010-10-09 17:06:23] INFO  ruby 1.9.2 (2010-08-18) [x86_64-darwin10.4.0]
    [2010-10-09 17:06:23] INFO  WEBrick::HTTPServer#start: pid=14814 port=3000
    Started GET "/territories/new" for at 2010-10-09 17:07:22 +0200
      Processing by TerritoriesController#new as HTML
    Rendered territories/new.html.erb within layouts/application (7.2ms)
    Completed 200 OK in 19ms (Views: 10.4ms | ActiveRecord: 0.0ms)

    Besides: Making the id column a user input is, mildly speaking, an extremely bad idea, and you should expect to encounter problems.

  • Diego Plentz

    Diego Plentz October 30th, 2010 @ 08:10 PM

    David, you're right. These messages are being displayed because of a gem I'm using (delocalize_it). Sorry for the inconvenience.

  • bingbing

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