scaffold question

I have a 2 tables, 1 table is called master and another one is called reference. The reference table has id and description. In the master table, there is one column which refers to the reference table. I have created a foreign key and is good.

I created scaffold for both the table. I first went to the reference table and entered all the reference data. Now what I would like to do is to enter data in the master table using scaffold. Is there a way, I can show a dropdown combo box which referes to the description from reference table and when inserting, it should insert the correct id (instead of description) into the master table.

Is there a easy way to do this?

Thanks.