[Rails] Notice Message 建立方式

建立方式

加入 helper

# [path] app/helpers/application_helper.rb
module ApplicationHelper
  def notice_message
    alert_types = { notice: :success, alert: :danger }

    close_button_options = { class: "close", "data-dismiss" => "alert", "aria-hidden" => true }
    close_button = content_tag(:button, "×", close_button_options)

    alerts = flash.map do |type, message|
      alert_content = close_button + message

      alert_type = alert_types[type.to_sym] || type
      alert_class = "alert alert-#{alert_type} alert-dismissable"

      content_tag(:div, alert_content, class: alert_class)
    end

    alerts.join("\n").html_safe
  end
end

到要放置的地方加入<%= notice_message %> 例如：

<!-- [path] app/view/layout/application.html.erb -->
<div class="container">
  <%= notice_message %>
  <%= yield %>
</div>

參考

1. http://kakas-blog.logdown.com/posts/286448-rails101-chapter3-notice-message