Request
Request for a custom liquid filter that appends/prepends strings (or variables) only if the target object is not null or empty.
This will be useful when we have properties/values we want to conditionally output within it's own HTML structure only when it is present (which is a common task).
Custom Liquid Filter: "wrap_if"
- Liquid
For example, in Menu layouts we only want to render a class value (and it's surrounding attribute) if it exists. Currently we do it like this:
{% if item.itemClass != null and item.itemClass != "" %}class="{{item.itemClass}}"{% endif %}
Which is a lot of code to do a simple thing.
The idea for a custom liquid filter to achieve the same thing in a cleaner way would be like this:
TEMPLATE:
{{ | wrap_if: '', ''}}EXAMPLE:
{{item.itemClass | wrap_if: 'class="', ‘"'}}So behind the scenes, "wrap_if" does the same as
{% if item.itemClass != null and item.itemClass != "" %}