Created
May 11, 2021 16:39
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null_object_fix.rb
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| class Config | |
| def self.emailer | |
| if email_disabled? then NullMailer else | |
| if has_amiko? then Amiko else MailerMonkey end | |
| end | |
| end | |
| end | |
| class NullMailer | |
| def initialize ; end | |
| def send_email_to(*args) ; true ; end | |
| end | |
| def advertise_discount_for_movie | |
| moviegoers = Moviegoer.interested_in(params[:movie_id]) | |
| EmailList.new(Config.emailer).send_email_to(moviegoers) | |
| end | |
| end |
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