CASE: allow false in default statement

[sven]

We’ve seen how we can create a default statement, where we take the default value whenever our statement proves to be nil, false or empty:

CASE: use default in a variable

Let’s say we want to display the name of the street of the file. As you know, both name and number is saved into one field {{ company.street }}. We can use the remove-tag however to strip any number that is saved into that object, by doing this: {% assign company_city = company.street | remove:"1" | remove:"2" | remove:"3" | remove:"4" | remove:"5" | remove:"6" | remove:"7" | remove:"8" | remove:"9" | remove:"0" %} Street = {{ company_city }} This will work in 95% of the cases, but if your …

So if you have this for example:

{% comment %}create var with output FALSE{% endcomment %}
{% assign my_check = false %}

{% comment %}create var with either a database variable OR the default TRUE{% endcomment %}
{% assign question_a = my_check | default:true %}

{% comment %}display output var{% endcomment %}
{{ question_a }}  

then you’ll see the output of the variable question_a will be true. And that’s because the default attribute skips the value of the var my_check (as that is false) and goes to the default value instead.

If you ever face this situation, in which you want the value ‘false’ be taken into the variable you create with the default attribute, you can by adding allow_false:true like this:

{% assign question_a = my_check | default:true, allow_false:true %}

which will now result in the output of false instead of true.

Perhaps not many use-cases in here, but it avoids reversing your code if you ever face this situation.