Rails pluralize count when zero, does not work with number_with_delimiter method

Question

I am trying to make a pluralization work with zero case and also using number_with_delimiter to make it readable with bigger numbers.

So, I have in my YAML file:

count:
  zero: no counts
  one: 1 count
  other %{count} counts

And in the view:

t 'count', number_with_delimiter(count)

The problem is, it does not work with the zero case. It handle it as other case. But, if I leave out the number_with_delimiter method it work as expected.

It is possible to pluralize with a number format handling also the zero case?

Answer 1

Rails already have helpers to pluralize the string according to the count given.

2.1.5 :037 > helper.pluralize(0,'count')
 => "0 counts" 
2.1.5 :038 > helper.pluralize(1,'count')
 => "1 count" 
2.1.5 :039 > helper.pluralize(2,'count')
 => "2 counts" 

Answer 2

Yes, it's possible to I18n pluralize a number with format handling.

That being said, the count has to be a Number in order to work so we can't use it. The trick is to pass an extra variale to your translation.

Let's say we have a points variable.

t 'total_points', count: points, formatted_points: number_with_delimiter(points)

And in your YAML file:

total_points:
  zero: '0 points'
  one: '1 point'
  other: '%{formatted_points} points'

count variable will be used to determine which translation to pick and formatted_points will be used for interpolation.

Here is another alternative: https://github.com/ruby-i18n/i18n/issues/328#issuecomment-260217071