Parse params

main.rb

@@ -18,7 +18,12 @@ end
 
 get '/examples' do
   $DB_POOL.with do |db_conn|
-    ids = params[:ids]
+    ids =
+      case params[:ids]
+      when Array then params[:ids].map { |id| Integer id }
+      when String then params[:ids].split(',').map { |id| Integer id }
+      else raise 'Invalid param "ids"'
+      end
 
     examples = db_conn.exec_params(
       (