feat(mailers): add NotificationMailer, new_post

examples/blog/app/mailers/notification_mailer.rb

@@ -0,0 +1,34 @@
+class NotificationMailer < Prism::Mailer::Base
+  self.template_roots = [File.join(APP_ROOT, 'app', 'views', 'mailers')]
+  default from: 'blog@prism.example'
+
+  def new_post(post_id)
+    @post = Post.find(post_id)
+    @post_url = "/posts/#{@post.to_param}"
+    mail(to: 'editors@prism.example', subject: "New post: #{@post.title}")
+  end
+
+  def welcome(user_id)
+    @user = User.find(user_id)
+    mail(to: @user.email, subject: 'Welcome to Prism Blog')
+  end
+
+  # `token` is generated by the caller (User#generate_token_for(:password_reset),
+  # see PasswordResetsController#create) rather than here - keeps this
+  # mailer, like the others, a pure "given the data, render+send" step with
+  # no signing concerns of its own.
+  def password_reset(user_id, token)
+    @user = User.find(user_id)
+    @reset_url = url_for(:edit_password_reset, token: token)
+    mail(to: @user.email, subject: 'Reset your Prism Blog password')
+  end
+
+  # `token` is generated by the caller, same reasoning as password_reset
+  # above - either User's own after_commit(on: :create) at signup time, or
+  # EmailConfirmationsController#create for a resend.
+  def confirmation_instructions(user_id, token)
+    @user = User.find(user_id)
+    @confirmation_url = url_for(:email_confirmation, token: token)
+    mail(to: @user.email, subject: 'Confirm your Prism Blog email address')
+  end
+end