About validate

Rails
1

hello…

I am new to Ruby on Rails… (2.2)
I am currently following steps from the book “agile web delopment with
Rails” building depot application.

It says I need to edit “app/models/product.rb” file and add the
following lines to check the price to be at least a cent… that’s 0.01

def price_must_be_at_least_a_cent
errors.add(:price, ‘should be at least 0.01’ ) if price.nil? ||
price < 0.01
end

after this, I typed 0.1 and 0.10, and get the error… saying “should
be at least 0.01”…
if I type 1, or 0.01… I don’t get the error.

am I the only one with this problem? if so, i’d like to know what I
need to do to fix the problem.

thanks

2

i just tried it for myself. it’s working correctly. so i advice to put
a debugger at the beginning of your action and look what you are
getting for price and where the error occurrs (whether it’s inside
that method or even before).

3

thank you for trying it out for me… and for the advice too…

I ran over the steps again… and it works fine now…
I found out why too…
when I added a new column “price” to the table… I forgot to write
its :precesion and :scale …
I hope I don’t make mistakes like that no more…

thank u MaD