预览 devise 邮件未找到

Question

I try to have a preview of devise mailer but when it doesn't work.

I have followed this rails guide and it doesn't seems difficult and many things to do.

Devise already have a mailer class here

So I should only have to create a preview file so here is what I have done so far.

I generated my devise views in the repository app/views/users/mailer/

I have my devise.rb which look like that

Devise.setup do |config|
# ==> Mailer Configuration
  # Configure the e-mail address which will be shown in Devise::Mailer,
  # note that it will be overwritten if you use your own mailer class
  # with default "from" parameter.
  config.mailer_sender = 'please-change-me-at-config-initializers-devise@example.com'

  # Configure the class responsible to send e-mails.
  config.mailer = 'Devise::Mailer'
  # Configure the parent class responsible to send e-mails.
  #config.parent_mailer = 'ActionMailer::Base'
end

I have my test/mailers/previews/devise_mailer_preview.rb

class DeviseMailerPreview< ActionMailer::Preview

  def confirmation_instructions
    Devise::Mailer.confirmation_instructions(User.first, "faketoken")
  end

  def reset_password_instructions
    Devise::Mailer.reset_password_instructions(User.first, "faketoken")
  end

end

I didn't change the path config.action_mailer.preview_path in my application.rb because test/mailers/previews is the default path

So now when I try to access to http://localhost:3000/rails/mailers I have a white empty page and if I try http://localhost:3000/rails/mailers/users/mailer/confirmation_instructions I have this error Mailer preview 'users/mailer/confirmation_instructions' not found

I tried many different link but still have the same error, I also tried to followed this stackoverflow answer but no success.

It's seems so easy but I can't succeed...

Answer 1

Ok I found out why.

Because I'm using the gem rspec-rails the repository test is replaced tp spec I just needed to move my test/mailers/previews/devise/mailer_preview.rb to spec/mailers/previews/devise/mailer_preview.rb and still not need to change the configuration of config/application.rb

Hope it will help some people

also note that in rails 6 your devise mailer preview should be wrote with a module

module Devise
class MailerPreview< ActionMailer::Preview

  def confirmation_instructions
    Devise::Mailer.confirmation_instructions(User.first, "faketoken")
  end

  def reset_password_instructions
    Devise::Mailer.reset_password_instructions(User.first, "faketoken")
  end

end
end

Answer 2

Given config.mailer = 'Devise::Mailer' ...

Your mailer preview should be found in the test/mailers/previews/devise directory.

So, you can create a mailer_preview.rb file in that directory (not users directory)...

$ mkdir test/mailers/previews/devise
$ touch test/mailers/previews/devise/mailer_preview.rb

Then your class name for mailer_preview.rb should be Devise::MailerPreview < ActionMailer::Preview

Answer 3

Moving the mailers folder worked for me!