Ruby complex validation
- by pcasa
Have a product that belongs to a category. Want to create a promotion for a short period of time (lets say a week or two), but their can be only one promotion per category during that time.
How can I create a custom validation for this?
product class
belongs_to :categories
name:string
desc:text
reg_price:decimal
category_id:integer
promo_active:boolean
promo_price:decimal
promo_start:datetime
promo_end:datetime
end
category class
has_many :products
name:string
end
