Move method from view into cell. [#47]

app/cells/state_selector/show.haml

@@ -1,7 +1,6 @@
 = form_with url: url, local: true, class: 'state-selector' do |form|
   %p
     = label_tag :states, _('Choose one or more states:')
-    - locale_state_options = states_for_menu.sort_by {|state| _(state.name)}.map {|state| [_(state.name), state.abbr]}
     = select_tag :states, options_for_select(locale_state_options, @states&.map(&:abbr)), multiple: true
   %p
     = submit_tag _('Go')

app/cells/state_selector_cell.rb

@@ -16,6 +16,10 @@ def show
 
   private
 
+  def locale_state_options
+    @locale_state_options ||= states_for_menu.sort_by {|state| _(state.name)}.map {|state| [_(state.name), state.abbr]}
+  end
+
   def states_for_menu
     @states_for_menu ||= State.all
   end