Question

In an existing codebase, one attribute of the discount model is discount_type. Since there are only 2 types of discounts (percentage and cash) used in this system, they are hardcoded as percentage or cash throughout the system, there is no discount_types table or anything to map to.

In the form, there is the following code:

=form_for @discount do |f|
  ...
  =f.select :discount_type, options_for_select(["percentage", "cash"])
  ...

This works great for new discounts, but when pulling up the form to edit a discount, percentage is always selected, no matter what the discount object’s discount_type is. How do we get the form to default to the discount_type of the object being edited?

Answer 1

Wouldn’t simple

= f.select :discount_type, ["percentage", "cash"]

be enough?