Adding user settings (model and mailer), no form yet

app/mailers/notification_mailer.rb

@@ -1,11 +1,11 @@
 class NotificationMailer < ApplicationMailer
   helper StreamEntriesHelper
-  helper AtomBuilderHelper
 
   def mention(mentioned_account, status)
     @me     = mentioned_account
     @status = status
 
+    return unless @me.user.settings(:notification_emails).mention
     mail to: @me.user.email, subject: "You were mentioned by #{@status.account.acct}"
   end
 
@@ -13,6 +13,7 @@ class NotificationMailer < ApplicationMailer
     @me      = followed_account
     @account = follower
 
+    return unless @me.user.settings(:notification_emails).follow
     mail to: @me.user.email, subject: "#{@account.acct} is now following you"
   end
 
@@ -21,6 +22,7 @@ class NotificationMailer < ApplicationMailer
     @account = from_account
     @status  = target_status
 
+    return unless @me.user.settings(:notification_emails).favourite
     mail to: @me.user.email, subject: "#{@account.acct} favourited your status"
   end
 
@@ -29,6 +31,7 @@ class NotificationMailer < ApplicationMailer
     @account = from_account
     @status  = target_status
 
+    return unless @me.user.settings(:notification_emails).reblog
     mail to: @me.user.email, subject: "#{@account.acct} reblogged your status"
   end
 end

app/models/user.rb

@@ -9,4 +9,8 @@ class User < ApplicationRecord
   scope :prolific, -> { joins('inner join statuses on statuses.account_id = users.account_id').select('users.*, count(statuses.id) as statuses_count').group('users.id').order('statuses_count desc') }
   scope :recent,   -> { order('created_at desc') }
   scope :admins,   -> { where(admin: true) }
+
+  has_settings do |s|
+    s.key :notification_emails, defaults: { follow: true, reblog: true, favourite: true, mention: true }
+  end
 end