Add api/v1 base controller

app/controllers/api/v1/parks_controller.rb

@@ -1,31 +1,24 @@
-class Api::V1::ParksController < ApplicationController
-  DEFAULT_PAGE_SIZE = 10
-  before_action :set_park, only: :show
+module Api::V1
+  class ParksController < BaseController
+    before_action :set_park, only: :show
 
-  def index
-    parks = Park.all
-    if params[:state].present?
-      parks = parks.where("states like '%' || ? || '%'", params[:state])
+    def index
+      parks = Park.all
+      if params[:state].present?
+        parks = parks.where("states like '%' || ? || '%'", params[:state])
+      end
+      render json: parks.limit(per_page).offset((page - 1) * per_page)
     end
-    render json: parks.limit(per_page).offset((page - 1) * per_page)
-  end
 
-  def show
-    render json: @park
-  end
+    def show
+      render json: @park
+    end
 
-  private
+    private
 
-  def per_page
-    (params[:per_page].presence || DEFAULT_PAGE_SIZE).to_i
-  end
-
-  def page
-    (params[:page].presence || 1).to_i
-  end
-
-  def set_park
-    @park = Park.find_by(code: params[:code])
-    head :not_found unless @park.present?
+    def set_park
+      @park = Park.find_by(code: params[:code])
+      head :not_found unless @park.present?
+    end
   end
 end