Rails 3. How to display two decimal places in edit form?

Question

I have this edit form.

But when I store something such as 1.5, I would like to display it as 1.50.

How could I do that with the form helper? <%= f.

Answer 1

Alternatively, you can use the format string "%.2f" % 1.5. http://ruby-doc.org/docs/ProgrammingRuby/html/ref_m_kernel.html#Kernel.sprintf