[Jekyll](EN) Make array and add element in liquid

Summarize making array and adding element in Jekyll Liquid

Environment and Prerequisite

• Linux
• Jekyll

Jekyll Array Create and Add

Create

• Use split filter
• It is used to convert comma-separated items from a string to an array but there is no string so it makes empty array.

{% assign ARRAY_NAME = "" | split: ',' %}

Add

• Use push to add element to array and reassign to original variable.
• push does not actually add to current array so it needs to be reassigned.

{% assign ARRAY_NAME = ARRAY_NAME | push: ELEMENT %}

Example

• Example of making new array from specific collections in my blog.
• opensource-contributions: Array
• post: Element

{% assign opensource-contributions = "" | split: ',' %}
{% for post in site.opensource-contributions %}
  {% if post.post_id != page.post_id %}
     {% assign opensource-contributions = opensource-contributions | push: post %}
  {% endif %}
{% endfor %}

Reference

• https://jekyllrb.com/docs/liquid/
• https://shopify.github.io/liquid/filters/split/
• https://jekyllrb.com/docs/liquid/filters/
• https://shopify.github.io/liquid/tags/variable/
• https://shopify.github.io/liquid/tags/iteration/
• https://stackoverflow.com/questions/41263553/how-to-create-an-array-in-a-for-loop-in-liquid