How can I sort and paginate blog posts effectively?

[jao]

(asking again because I didn't get any replies on my previous 2 posts and Shopify support staff refuses to provide support)

I'm trying to create a paginated list with blog articles that are sorted by time of update.

But it results in this error:

Liquid error (sections/blog-template.liquid line 72): Array 'blog_posts_sorted' is not paginateable.

This is the relevant liquid code:

{% assign blog_posts_sorted = blog.articles | sort: "updated_at" %}

{%- paginate blog_posts_sorted by articles_per_page -%}

How do I paginate a sorted list of blog articles?

[jao]

BUMP

[gina-gregory]

You can't mess with the pagination/sort of blog posts with liquid. You can do some hacky things with javascript though.

[jao]

Thanks, that is good to know. Do you perhaps have any links to the docs that would guide me in the general direction?

[gina-gregory · Accepted solution]

Generally speaking, you can gather all your posts into a JSON array by fetching the results of each paginated page, then sort that by the updated_at field. Then output the articles and add a javascript-based pagination system. If you have a ton of posts, this could get slow, but you can try to cache the results in localStorage or something so only the first load is slow.

[jao]

Awesome! Thanks, I’ll dig into that and see what I can find.

[shopdev4711]

Could you please get into more detail? I tried the same as Jao and did not succeed. My goal is to create a dictionary with blog articles. Currently 80 articles so far, but slowly expanding. Currently I only get 50 "random" articles, when fetching {% assign sorted_articles = blog.articles | sort: 'title' %}

My goal is to display the first 50 articles on one page, then the next 50, etc. in alphabetical order. Javascript pagination is only a viable solution if it may be crawlable by google.

I tried it with tagging, so that the search crawler at least gets all of the articles and not only a subset, which seems to be random or maybe based on update-date?