# Template logic for Related posts
**URL:** https://discourse.gohugo.io/t/template-logic-for-related-posts/2947
**Category:** support
**Created:** [March 19, 2016, 11:11pm UTC](https://discourse.gohugo.io/t/template-logic-for-related-posts/2947 "2016-03-19T23:11:30Z")
**Posts on this page:** 3
**Page:** 1
Taking code from [http://justindunham.net/blog-bells-and-whistles-in-hugo/](http://justindunham.net/blog-bells-and-whistles-in-hugo/)
How can I first build the slice of related posts, and then decide if length greater than 0, then show “Related articles” block, and render first 5 in the list.
Code: -
```auto
```
I tried `{{ range first 5 (where ...)}}`, but this will filter out first 5 post which may not contain the related post.
Is there any way to initialize a slice/array, add related to it and then apply `range first N` over this new array/slice.
---
I found a more performant code snippet [dropped last August](https://novelist.xyz/tech/related-posts-in-hugo/). I’ve adapted it in [After Dark](https://github.com/comfusion/after-dark) to support conditional list display. Here’s the end result:
```
{{ range first 1 (where (where .Site.Pages ".Params.tags" "intersect" .Params.tags) "Permalink" "!=" .Permalink) }}
{{ $.Scratch.Set "has_related" true }}
{{ end }}
{{ if $.Scratch.Get "has_related" }}
{{ end }}
```
This uses uses `range` to loop over pages until it finds its first match, setting a Boolean in `$.Scratch`, which is then used to conditionally output 7 related pages, with optional limit override, in reverse chronological order (the Hugo default). Note this will grab pages across sections and not just posts.
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