Make open source

app/helpers/application_helper.rb

@@ -0,0 +1,24 @@
+module ApplicationHelper
+  def flash_class(key)
+    case key
+    when :notice then 'alert alert-info'
+    when :success then 'alert alert-success'
+    when :error then 'alert alert-error'
+    when :alert then 'alert alert-error'
+    end
+  end
+
+  def errors_for(object)
+    return unless object.errors.any?
+    content_tag(:div, class: 'mb-3 card border-danger') do
+      concat(content_tag(:div, class: 'card-header bg-danger text-white') do
+        concat "Oops, #{pluralize(object.errors.count, 'problem')}:"
+      end)
+      concat(content_tag(:ul, class: 'mb-0 list-group list-group-flush') do
+        object.errors.full_messages.each do |msg|
+          concat content_tag(:li, msg, class: 'list-group-item')
+        end
+      end)
+    end
+  end
+end