Problem with Gem "confirmable" module "Developer" in Rubyonrails

Question

I was implementing the Gem Devise in the Rubyonrails and everything was working perfectly.

Then I went to add the "confirmable" module. I took the following steps:

I added :confirmable in Usuarios.rb:

class Usuario < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable,
         # adicionado por mim
         :confirmable
end

I created the Migration file:

class AddConfirmableToUsuarios < ActiveRecord::Migration
  def change
    change_table(:usuarios) do |t|
      t.string :confirmation_token
      t.datetime :confirmed_at
      t.datetime :confirmation_sent_at
      t.string :unconfirmed_email
    end
  end
end

In the views I had to fix some urls by adding usuario in helpers, for example:

new_confirmation_path(resource_name)
# para
new_usuario_confirmation_path(resource_name)

However, when sending the form to views/devise/confirmation/new.html.erb i get 406 code "not accptable" and error ActionController::UnknownFormat in Devise::ConfirmationsController#create. Despite this the confirmation email is sent and the link sent is validated and the account can be validated.

Follow the form below:

<h2>Resend confirmation instructions</h2>

<%= form_for(resource, as: resource_name, url: usuario_confirmation_path(resource_name), html: { method: :post }) do |f| %>
  <%= devise_error_messages! %>

  <div><%= f.label :email %><br />
  <%= f.email_field :email, autofocus: true %></div>

  <div><%= f.submit "Resend confirmation instructions" %></div>
<% end %>

Answer 1

Make your form like this:

<%= form_for(resource, as: resource_name, url: confirmation_path(resource_name), html: { method: :post }) do |f| %>

The problem lies in the route, I believe.