Merge pull request rails#47715 from adrianna-chang-shopify/ac-pg-fix-conn-param

PostgreSQL adapter uses :host instead of :hostname for connection params

Author: matthewd

activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb

@@ -72,8 +72,8 @@ def new_client(conn_params)
             raise ActiveRecord::NoDatabaseError.db_error(conn_params[:dbname])
           elsif conn_params && conn_params[:user] && error.message.include?(conn_params[:user])
             raise ActiveRecord::DatabaseConnectionError.username_error(conn_params[:user])
-          elsif conn_params && conn_params[:hostname] && error.message.include?(conn_params[:hostname])
-            raise ActiveRecord::DatabaseConnectionError.hostname_error(conn_params[:hostname])
+          elsif conn_params && conn_params[:host] && error.message.include?(conn_params[:host])
+            raise ActiveRecord::DatabaseConnectionError.hostname_error(conn_params[:host])
           else
             raise ActiveRecord::ConnectionNotEstablished, error.message
           end