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Liquid – Convert Array to Lowercase – Shopify

I’m using Shopify and want to hook into customer tags, however they are case sensitive. So {% if customer.tags contains "wholesale" %} is not the same as {% if customer.tags contains "Wholesale" %}. My client may or may not stick to one case when applying tags so I want to guard against that in the future.

I would like to take an array, customer.tags, and convert all of the values to lowercase. I’m trying to work out the logic but am having trouble.

I want to put customer.tags into a new array which isn’t working.

{% assign newArray = customer.tags %}
{{ newArray }}

What am I doing wrong?

Tags:

3

Answers


  1. 0

    You could use the downcase filter for this:

    {% assign contains_wholesale = false %} 

{% for tag in customer.tags %}
  {% assign lowercase_tag = tag | downcase %}
    {% if lowercase_tag == 'wholesale' %}
      {% assign contains_wholesale = true %}
    {% endif %}
{% endfor %}

    Note: downcase just works for ASCII characters. If you need to search for strings with accented letters or other Unicode characters then this won’t be enough.

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  2. 0

    Another solution as you use the “contains” operator would be to skip the “w”.

    Something like {% if customer.tags contains ‘holesale’ %} should work.

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  3. 0

    if you would like to keep customer.tags as an array so you can keep using contains in a simple if statement (like your example). You could also chain a couple of liquid filters together to turn all of the strings within the array to lowercase.

    Example:

      {% assign lowercaseTags = customer.tags | join: ',' | downcase | split: ',' %}
  {% assign randomString = 'WholeSale' | downcase %}

  {% if lowerCaseTags contains randomString %}
    {% comment %}
    Will now match regardless of case sensitivity
    {% endcomment %}
  {% endif %

    Explanation:

    • Join filter: Turn the array into a string seperated by ,
    • Downcase filter: make the whole string lowercase
    • Split filter: opposite of join, recreates the array from the string based on the character used in join ,
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