The result you want

When you press the "Easy Login" button, Installation of a button to log in as a registered guest user.

Prerequisites

A web app based on the Rails tutorial.

things to do

Create an easy_login action separately from the create action of sessions_controller for registered guest users. Pass the email.
Describe the routing of easy_login in routs.rb.
Install the Easy Login button in view.
Created and registered in sessions_controller.rb (seeds.rb) Add an easy_login action so that you can log in as a guest user.

`sessions_controller.rb`


    def easy_login
      user = User.find_by(email: "[email protected]")
          log_in user　#session_Predefined with helper.
          redirect_back_or user #session_Predefined with helper.
    end

Add the following in config / routes.rb

`config/routes.rb`


  post   '/easy_login',   to: 'sessions#easy_login'

Add the following to any place in ʻapp / views / sessions / new.html.erb`

`app/views/sessions/new.html.erb`


<p><%= link_to "Easy login", easy_login_path, method: :post, class: 'btn btn-primary' %></p>

result

For the time being, I was able to log in as a guest user from the easy login button.

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