How to send magic link after user registrated

[no1-knows]

Is there any way to send magic link after user registered like sign_in @user for security?

[no1-knows]

Did I make myself clear? Let me explain more.

I would like to make the flow, from signup to signin, like slack.
The flow like below.

1. Input email for signup.
2. check email and click.

Could you let me know how to do this?
I think it will work if I could use module Passwordless properly...but I didn't.

As far as I know, this gem has 2 flows.

First: It is a pain in input twice.

1. Input email for signup.
2. Input email for signin.
3. check email and click.

Second: It is not good for security because the email might not valid.

1. Input email for signup and signin.(using sign_in @user)

[mikker]

Something like this...

# registrations_controller.rb
include Passwordless::ControllerHelpers

def create
  user = User.new(email: params[:email])

  if user.save
    pwless_session = build_passwordless_session(user)
    pwless_session.save!

    YourOwnRegistrationsMailer.signup(token: pwless_session.token).deliver_now
    # ... redirect back or whatever
  end
end

[no1-knows]

Thank you for your help!!
I did it like below!

def create
  @user = User.new(user_params)

    respond_to do |format|

      if @user.save
        pwless_session = build_passwordless_session(@user)
        pwless_session.save!
        RegistrationMailer.with(token: pwless_session.token, user: @user).welcome_email.deliver_now
        # ... redirect back or whatever
  end
end

[no1-knows]

I want you to add this way at README.md if you can.
Anyway, please enjoy a cup of coffee, maybe for one year!!

[fa11enangel]

This is wrong

I've deleted the message due to wrong content - some local issue on my machine.

[mikker]

I'm not sure that's right. save! calls callbacks: https://guides.rubyonrails.org/active_record_callbacks.html#running-callbacks

[fa11enangel]

You are right, but this is a case for my small test project using your gem. I'll create a new issue with all information.