Refactor deprecated in rails 6.1 issues

app/helpers/sorted_country_helper.rb

@@ -0,0 +1,32 @@
+module SortedCountryHelper
+  def all_country_options(selected = nil)
+    quick_options = options_for_select(quick_list, selected: selected)
+
+    # no double select
+    selected = quick_list.map(&:second).include?(selected) ? '' : selected
+
+    all_options = options_for_select([['---', '---']] + all_sorted_truncated,
+                                     selected: selected, disabled: ['---'])
+    quick_options + all_options
+  end
+
+  def quick_list
+    [
+      %w[Estonia EE],
+      %w[Finland FI],
+      %w[Latvia LV],
+      %w[Lithuania LT],
+      ['Russian Federation', 'RU'],
+      %w[Sweden SE],
+      ['United States', 'US'],
+    ]
+  end
+
+  def all_sorted
+    Country.all.sort_by(&:name)
+  end
+
+  def all_sorted_truncated
+    all_sorted.map { |country| [country.name.truncate(26), country.alpha2] }
+  end
+end