Adding only devise :confirmable to a Model

Question

I need to add a confirmation email functionality to a model in a Rails Application, but nothing else. It is not a User model, it is not authenticable.

I added devise :confirmable to the Model, and ran the migration:

class AddConfirmableToProjects < ActiveRecord::Migration
  def up
    add_column :projects, :confirmation_token, :string
    add_column :projects, :confirmed_at, :datetime
    add_column :projects, :confirmation_sent_at, :datetime
    add_index :projects, :confirmation_token, :unique => true
  end

  def down
    remove_column :projects, :confirmation_token, :confirmed_at, :confirmation_sent_at
  end
end

But when I create a new Project I get: Could not find a valid mapping for #<Project...

[How To: Add :confirmable to Users](https://github.com/plataformatec/devise/wiki/How-To:-Add-:confirmable-to-Users) — Alexander Popov, Sep 30 '13 at 11:21

score 1 · Answer 1 · answered Apr 21 '13 at 00:52

It sounds a bit wierd to add :confirmable to a model that's not your User model. Are you sure about this?

# Confirmable is responsible to verify if an account is already confirmed to
# sign in, and to send emails with confirmation instructions.

If yes, is this an error returning after running your Spec/Tests? If you're running FactoryGirl with RSpec try adding config.cache_classes = true in the test.rb file. This is a bit shady, but looks like the only solution.

If no, please provide some more code (model, controller, view).

I want to do this to verify users' email addresses: people are able to upload something to the app but they need to confirm their email after doing so. One time only. It is failing under normal circumstances, no rspec. — Nicolas, Apr 21 '13 at 02:28

score 0 · Answer 2 · edited Jun 23 '13 at 09:20

Yes, we can setup confirmable to any model. Following are the steps to do this. Lets say I have model a Invitation:

Add devise :confirmable to Invitation
This model should have the attribute :email

Create a migration with the following columns:

t.string   "email"
t.string   "confirmation_token"
t.datetime "confirmed_at"
t.datetime "confirmation_sent_at"

Create a controller which needs to extend Devise::ConfirmationsController. Add the following code in that controller:
```
def create
  self.resource = resource_class.send_confirmation_instructions(params[resource_name])
  if successful_and_sane?(resource)
    respond_with({}, :location => root_url)
  else
    # code your logic
  end
end

def new; end

def show; end
```
- Create an email view confirmation_instruction.html.erb under "app/views/devise/mailer/"
- Following line will create confirmation URL in your email: <%= confirmation_url(@resource, :confirmation_token => @resource.confirmation_token) %>
- Now create new record of your model "Invitation" by Invitation.create(:email => params[:email]
- Now on successful create, record will be saved in DB and email will send to that email as well.

Adding only devise :confirmable to a Model

2 Answers2