Notes_actionmailer_devise

TODO

* arriver à envoyer au moins un mail

* config pour prod et push heroku  (voir tutos ci dessous)

* tester letter-opener

* Sur une branche du projet final : 
  
  * (ajout crédential dans figaro/dotenv) sur le site direct

  * envoi mail contact / bourse



##### Gemfile

gem devise
gem mailjet
gem pg
gem figaro... 
letter-opener...

##### Devise

`rails generate devise:install`
"At this point, a number of instructions will appear in the console. Among these instructions, you'll need to 
set up the default URL options for the Devise mailer in each environment. Here is a possible configuration for
 config/environments/development.rb:
config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }" <<< developpment /!\  In production,
 :host should be set to the actual host of your application.
   config.action_mailer.raise_delivery_errors = true >>> pour afficher les erreurs

`rails g devise:views`
(uncomment email stuff in migration)
`rails generate devise User`
(rails generate migration DeviseCreateUser)  

unconfirm  ## Confirmable dans la migration
ajouter dans le model user.rb

`rails db:migrate`
(restart server)

Tester l'envoi de mail de Devise 
dans config de devise, dans initializer>devise.rb : attnetion à renseigner  `config.mailer_sender = 'adresse mail ici'`
(tuto pour custom un mailer devise https://github.com/plataformatec/devise/wiki/How-To:-Use-custom-mailer)

## avec mailjet
rails generate mailjet:initializer
dans l'initializer :

# renseigner les clefs... (a protéger dans dotenv/figaro..)

      Mailjet.configure do |config|
        config.api_key = ''
        config.secret_key = ''
        config.default_from = ''
    

# application.rb
`config.action_mailer.delivery_method = :mailjet_api` (marche aussi avec `mailjet`)
 
###### Action Mailer
devise a donc un mailer intégré (pour les confirm de connexions, les changements sur le profil ou oubli mdp, etc) mais on doit utiliser application_mailer pour les autres mails

# si on veut générer un mailer
`rails generate mailer UserMailer`
on ajoute la méthode welcome_email(user) dans welcome_email.html.erb...bizarre
on fait la view du mail welcome_email.text.erb
on call le mailer dans le controller avec par ex `UserMailer.welcome_email(@user).deliver_later` >>> le deliver_later fonctionne bien en dev et pas en prod (cf deploy 1), sinon on met deliver_now...

`rails generate mailjet:initializer` // ajouter credentials dans initializers/mailjet.rb 
les credentials smtp peuvent être indiqués dans config/dévelopment/environement...



######### Deploy
http://www.bogotobogo.com/RubyOnRails/RubyOnRails_Devise_Authentication_Sending_Confirmation_Email_Heroku_Deploy.php 
https://www.youtube.com/watch?v=YnGuALpJN1M 15:09

penser à faire les bonnes config pour config/environments/production.rb

1. (action mailer : dev vs prod)
 Job's default behavior is to execute jobs via the :async adapter. So, you can use deliver_later now to send 
 emails asynchronously. Active Job's default adapter runs jobs with an in-process thread pool. It's well-suited for 
 the development/test environments, since it doesn't require any external infrastructure, but it's a poor fit for 
 production since it drops pending jobs on restart.
>>>> If you need a persistent backend, you will need to use an Active Job 
 adapter that has a persistent backend (Sidekiq, Resque, etc).


##### Sending Email To Multiple Recipients

It is possible to send email to one or more recipients in one email (e.g., informing all admins of a new signup) by setting the list of emails to the `:to` key. The list of emails can be `an array of email addresses` or a single string with the addresses separated by commas.

class AdminMailer < ApplicationMailer
  default to: Proc.new { Admin.pluck(:email) },
          from: 'notification@example.com'
 
  def new_registration(user)
    @user = user
    mail(subject: "New User Signup: #{@user.email}")
  end
end









###### divers

`rails generate simple_form:install --bootstrap`

Be sure to have a copy of the Bootstrap stylesheet available on your
  application, you can get it on http://getbootstrap.com/.

  Inside your views, use the 'simple_form_for' with one of the Bootstrap form
  classes, '.form-horizontal' or '.form-inline', as the following:

    = simple_form_for(@user, html: { class: 'form-horizontal' }) do |form|