add splash screen to the casting calls

app/controllers/casting_calls_controller.rb

@@ -4,6 +4,7 @@ class CastingCallsController < ApplicationController
   before_action :set_project
   before_action :build_casting_call, only: [:new, :create]
   before_action :set_casting_call, only: [:show, :edit, :update, :cancel]
+  before_action :show_splash_screen, only: :index
 
   def index
     @casting_calls = casting_calls.order_by_recent.paginate(page: params[:page])
@@ -45,6 +46,10 @@ class CastingCallsController < ApplicationController
 
   private
 
+  def show_splash_screen
+    render :splash if casting_calls.count.zero?
+  end
+
   def casting_call_params
     params.require(:casting_call).permit(:title, :description, :project_description, :interview_instructions, :interview_requirements, :questions)
   end