How would I omit zero value decimals in a number format?

Question

Say I have {{ item.width }} and {{ item.height }} which are number fields with 2 decimal places.

In my template I have this:

<p>Dimensions: {{ item.width }} x {{ item.height }} in.</p>

Which will output like this:

Dimensions: 8.50 x 11.00 in.

Dimensions: 5.00 x 7.00 in.

Dimensions: 4.25 x 6.50 in.

How would I drop the decimal places that are not used? Like this:

Dimensions: 8.5 x 11 in.

Dimensions: 5 x 7 in.

Dimensions: 4.25 x 6.5 in.

Answer 1

For all those looking for a zeroes-trimming solution for just a single decimal place, please consider the following:

{{ item.width | replace({".0" : ""}) }}

In our case, the previously posted solution will not work reliably, because…

{{ item.width|trim('0')|trim('.') }}

…will correctly trim down 3.0 to 3, but transform 0.3 to 3 just the same. replace(), instead, does work like a charm.

Answer 2

This can be done with Twig's trim filter. It works just like PHP's trim function.

{{ item.width|trim('0','right')|trim('.','right') }}

Answer 3

I would use the twig number_format filter to make sure there were a known number of decimal places, then trim first the 0s, then the '.':

{{item.width|number_format(4)|trim('0')|trim('.')}}

I would write a macro for this:

{% macro num_format(n) %}
  {{n|number_format(4)|trim('0')|trim('.')}}
{% endmacro %}

Called like so:

{{ num_format(item.width) }}

Answer 4

multiply by 1:

{{ 12.50 * 1 }} == 12.5

{{ 12.0 * 1 }} == 12

Answer 5

This limits it to 4 places and trims only trailing zeroes.

{{ item.width | number_format(4) | trim("0", "right") | trim(".") }}

Answer 6

You can add a filter to twig (adding filters)

And make it sound like this:

$filter = new Twig_SimpleFilter('roundIf', function ($val) {
    return number_format($val, (int)$val == $val ? 0 : 2, ',', ' ');
});

Then use it in your code like

{{ item.width | roundIf }} {{ item.height | roudIf }}

Answer 7

If you don't want to pipe that much, you should be able to use sprintf and do something like this:

{{ '%02g' | format(item.width) }}

https://twig.symfony.com/doc/2.x/filters/format.html

http://fi2.php.net/manual/en/function.sprintf.php