Merge pull request #5976 from luisramos0/address_form

Fix address state selector and "use billing address" checkbox in order customer details page

app/controllers/api/states_controller.rb

@@ -0,0 +1,44 @@
+# frozen_string_literal: true
+
+module Api
+  class StatesController < Api::BaseController
+    respond_to :json
+
+    skip_authorization_check
+
+    def index
+      render json: states, each_serializer: Api::StateSerializer, status: :ok
+    end
+
+    def show
+      @state = scope.find(params[:id])
+      render json: @state, serializer: Api::StateSerializer, status: :ok
+    end
+
+    private
+
+    def scope
+      if params[:country_id]
+        @country = Spree::Country.find(params[:country_id])
+        @country.states
+      else
+        Spree::State.all
+      end
+    end
+
+    def states
+      states = scope.ransack(params[:q]).result.
+        includes(:country).order('name ASC')
+
+      if pagination?
+        states = states.page(params[:page]).per(params[:per_page])
+      end
+
+      states
+    end
+
+    def pagination?
+      params[:page] || params[:per_page]
+    end
+  end
+end