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並前往https://www.appsloveworld.com/ruby-on-rails/100/79/if-statement-to-hide-notification-when-nil

[Solved]-if statement to hide notification when nil-ruby-on-rails

You have to use nil? method of the Object class of ruby <% unless notice.nil? %> <div class="alert alert-success"> <a href="#" class="alert-link"><%= notice ...

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