CODEWITHSUNDEEP
ruby-on-railsvalidationruby-on-rails-4inputdisplay
J Edward Ellis
J Edward Ellis

Reputation: 1348

Rounding in a rails number_field

I have a number_field thus:

<%= ff.number_field :total_cost_savings, {class: 'form-control number', :step => 0.01} %>

I enter the value 1.1, save and refresh and it displays the value "1.100000023841858". I understand that this is because the underlying database field is a float and that I could change the database field to be a decimal, but isn't there some way to control the display formatting of the number_field instead?

Upvotes: 0

Views: 746

Answers (2)

J Edward Ellis
J Edward Ellis

Reputation: 1348

The answer is:

<%= ff.number_field :total_cost_savings, {value: number_with_precision(ff.object.total_cost_savings, precision: 2), class: 'form-control number', :step => 0.01} %>

Upvotes: 1

Petro Yakubiv
Petro Yakubiv

Reputation: 101

For prices you can do like this:

    f.number_field :total_cost_savings, value: number_to_currency(f.object.total_cost_savings, delimiter: '', unit: ''), step: 0.01

Also, you can overwrite the active record getter, by adding this to your model file:

    def total_cost_savings
      read_attribute(:total_cost_savings).round(2)
    end

Upvotes: 0

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