Render value to tenths place in nunjucks template?

Question

Using the round() filter I can achieve the correct precision to the tenths place as in

{{ value | round(1) }}

however I still want to display the tenths place if value is zero or a whole integer. (0.0 instead of 0, 3.0 instead of 3)

Is there a different method or other way to render all values to the tenths place?

score 0 · Answer 1 · answered May 23 '17 at 11:44

0

Add you own filter

var env = nunjucks.configure(...

env.addFilter('round1', function(num) {
    if (!isNaN(num))
        return '???';

    return parseFloat(num).toFixed(1);    
});

Usage

{{ value | round1 }}

answered May 23 '17 at 11:44

Aikon Mogwai

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The above logic will return '???' for everything because the if statement is not enclosed, and the logic is reversed for isNaN. – Don May 23 '17 at 23:49
1

Yeah. It's a bug. `if (isNaN(num)) ...` is correct check, of course. – Aikon Mogwai May 24 '17 at 00:03

score 0 · Accepted Answer · answered May 23 '17 at 23:47

Here is the logic for the custom filter since the round filter will not maintain a tenths place for zero or whole integers:

nunjucks.configure().addFilter('tenths', function(num) {
        return parseFloat(num).toFixed(1);
    });

Then usage is the same as any filter:

{{ num | tenths }}

Render value to tenths place in nunjucks template?

2 Answers2