How to use multiple arguments in an if statement with Liquid

Question

I want to use an if statement in Liquid with multiple conditionals. Something like:

{% if (include.featured == "true" and product.featured == "true") or (include.featured == "false" and product.featured == "false") %}

Multiple conditionals don't seem to work. Have I got the syntax wrong or can Liquid not handle this sort of if statement?

In your particular example you can just use `{% if include.featured == product.featured %}` — Devon Parsons, Nov 25 '15 at 13:43

score 47 · Accepted Answer · answered Apr 15 '14 at 10:51

47

Unfortunately, Liquid has a poor implementation of boolean algebra.

Using Liquid's operators and tags, here is a dirty way to achieve it:

{% if include.featured == true and product.featured == true %}
      {% assign test = true %}
{% endif %}

{% if include.featured == false and product.featured == false %}
      {% assign test = true %}
{% endif %}

{% if test %}
      Yepeeee!
{% endif %}

answered Apr 15 '14 at 10:51

You could also use an if/elsif to keep everything together. – Owen Dec 11 '14 at 15:42
'||' becomes 'or' too :~) – dawn May 05 '18 at 21:43

score 11 · Answer 2 · edited Jul 02 '16 at 02:19

11

Another way you can condense this is to combine else if statements, and booleans don't necessarily need the "==" when evaluating true:

{% if include.featured and product.featured %}
      {% assign test = true %}
{% elsif include.featured == false and product.featured == false %}
      {% assign test = false %}
{% endif %}

edited Jul 02 '16 at 02:19

Freedom_Ben

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answered Jan 11 '16 at 19:12

Daniel

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elseif is spelled elsif for jekyll - otherwise this was helpful to me. – Ron Jan 20 '16 at 06:14

How to use multiple arguments in an if statement with Liquid

2 Answers2

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