Question

I have an Invoice to which Items can be added using some jQuery magic.

Controller:

def new    
  @invoice = Invoice.new
  @invoice.with_blank_items(current_user) 
  @title = "New invoice"
end

Model:

def with_blank_items(user, n = 1)
  n.times do
    items.build(:price => user.preference.hourly_rate)
  end
  self
end

View:

<%= f.text_field number_with_precision(:price, :strip_insignificant_zeros => true) %>

Now the problem is that the price of a newly added item is always displayed in the format XX.X, i.e. with one decimal place, no matter if it is zero or not.

I don’t like that and I want a price of 50 to be displayed as 50 and not as 50.0.

Once the invoice gets saved to the database, unnecessary zeros get dropped and that’s perfect.

How can I strip insignificant zeros on newly added items as well?

Answer 1

You can try to format the values the right way before assigning:

items.build(:price => '%g' % user.preference.hourly_rate)