add page register/2

app/controllers/users/registrations_controller.rb

@@ -10,9 +10,18 @@ class Users::RegistrationsController < Devise::RegistrationsController
     render :infomation
   end
 
+  def send_mail; end
+
   protected
 
   def update_resource(resource, params)
     resource.update_without_password(params)
   end
+
+  def after_inactive_sign_up_path_for(resource)
+    scope = Devise::Mapping.find_scope!(resource)
+    router_name = Devise.mappings[scope].router_name
+    context = router_name ? send(router_name) : self
+    context.respond_to?(:send_signup_mail_path) ? context.send_signup_mail_path : "/"
+  end
 end

app/views/users/registrations/infomation.html.slim

@@ -9,6 +9,12 @@
       = form_for(resource, as: resource_name, url: registration_path(resource_name), html: { method: :put }) do |f|
         = render 'users/shared/error_messages', resource: resource
         .field.row.mb-2.form-group
+          .col-3
+            = f.label :email, class: 'form-label'
+          .col-9
+            = f.email_field :email, autofocus: true, autocomplete: 'email', class: 'form-control mb-2'
+            span.form-msg
+        .field.row.mb-2.form-group
         - if devise_mapping.confirmable? && resource.pending_reconfirmation?
           div
             | Currently waiting confirmation for: 

app/views/users/registrations/send_mail.html.slim

+.container.text-center
+  h2.my-5 
+    | Register
+  p 
+    | Thank you for register our service, an confirmation email with registration link has been sent to your email. Please check your email within 24 hours.
+  p 
+    | Please note that the registration link is only valid for 24 hours.
+  p
+    | Over that period, you will have to register your email again.
\ No newline at end of file

config/locales/devise.en.yml

@@ -41,7 +41,8 @@ en:
       signed_up: "Welcome! You have signed up successfully."
       signed_up_but_inactive: "You have signed up successfully. However, we could not sign you in because your account is not yet activated."
       signed_up_but_locked: "You have signed up successfully. However, we could not sign you in because your account is locked."
-      signed_up_but_unconfirmed: "A message with a confirmation link has been sent to your email address. Please follow the link to activate your account."
+      # signed_up_but_unconfirmed: "A message with a confirmation link has been sent to your email address. Please follow the link to activate your account."
+      signed_up_but_unconfirmed: ""
       update_needs_confirmation: "You updated your account successfully, but we need to verify your new email address. Please check your email and follow the confirmation link to confirm your new email address."
       updated: "Your account has been updated successfully."
       updated_but_not_signed_in: "Your account has been updated successfully, but since your password was changed, you need to sign in again."

config/routes.rb

@@ -10,6 +10,7 @@ Rails.application.routes.draw do
     get '/forgot_password', to: 'devise/passwords#new',             as: :forgot_password
     get '/reset_password',  to: 'devise/passwords#edit',            as: :reset_password
     get '/register/1',      to: 'devise/registrations#new',         as: :signup
+    get '/register/2',      to: 'users/registrations#send_mail',    as: :send_signup_mail
     get '/register/3',      to: 'users/registrations#information',  as: :signup_infomation
   end
   root 'top#index'

create.html.slim

+.container.text-center
+  h2.my-5 
+    | Register
+  p 
+    | Thank you for register our service, an confirmation email with registration link has been sent to your email. Please check your email within 24 hours.
+  p 
+    | Please note that the registration link is only valid for 24 hours.
+  p
+    | Over that period, you will have to register your email again.
\ No newline at end of file