Shopify themeの開発をしていて、liquidでURLのクエリを取りたかったので調べてみました
{% comment %} theme-check-disable ContentForHeaderModification {% endcomment %}
{%- capture contentForQuerystring -%}{{ content_for_header }}{%- endcapture -%}
{% comment %} theme-check-enable ContentForHeaderModification {% endcomment %}
{%- assign url = contentForQuerystring
| split: '"pageurl":"'
| last
| split: '"'
| first
| replace: '\/', '/'
| replace: '%20', ' '
| replace: '\u0026', '&'
-%}
{%- assign params = url | split: '?' | last | split: '&' -%}
<script>
console.log("{{ url }}", "{{ params }}")
</script>すると
https://sample.myshopify.com/productions/demo?param1=1¶m2=2
["param1=1", "param2=2"]という感じで取れました
reference: https://freakdesign.com.au/blogs/news/get-the-url-querystring-values-with-liquid-in-shopify