mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-14 20:37:55 -05:00
ba45da9d03
32356e4e Fix typo in header of shortcode-templates.md c8f1a2d2 Correct code example for index template function bfa6a55d Escape code fencing ff8b2f99 Fix typos in deployment with wercker tutorial 557c36e8 theme: Merge commit '7fbb4bed25001182bfeb91f79db0f0c1936582ee' 7fbb4bed Squashed 'themes/gohugoioTheme/' changes from 7dd8a302..ca53082d ce31cee0 Add "See Also" config 158cee1b Make the tags into keywords 61600be6 Add a note to the related section 49edb5a2 Relase 0.27.1 c9bbc001 releaser: Add release notes to /docs for release of 0.27.1 213c6c3b Add bugs poster 8b4590cd Add KeyCDN integration tutorial 2b277859 Add tutorial videos to several docs pages 950fef1f Update roadmap to link to the correct milestones page 496f5bf6 Rename relnotes d6f9378d Bump Netlify versions to 0.27 087fde7f Update 0.27 release notes 603f94ae docs: Document Related Content 3790f6a3 releaser: Bump versions for release of 0.27 0948868c releaser: Add release notes to /docs for release of 0.27 git-subtree-dir: docs git-subtree-split: 32356e4eabe357ae914f4d1d59e8ae31ce936723
1.8 KiB
1.8 KiB
| title | linktitle | description | godocref | date | publishdate | lastmod | categories | menu | keywords | signature | workson | hugoversion | relatedfuncs | deprecated | aliases | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| intersect | intersect | Returns the common elements of two arrays or slices. | 2017-02-01 | 2017-02-01 | 2017-02-01 |
|
|
|
false |
The elements supported are strings, integers, and floats (only float64).
A useful example of intersect functionality is a "related posts" block. isset allows us to create a list of links to other posts that have tags that intersect with the tags in the current post.
The following is an example of a "related posts" partial template that could be added to a single page template:
{{< code file="layouts/partials/related-posts.html" download="related-posts.html" >}}
-
{{ $page_link := .Permalink }}
{{ $tags := .Params.tags }}
{{ range .Site.Pages }}
{{ $page := . }}
{{ $has_common_tags := intersect $tags .Params.tags | len | lt 0 }}
{{ if and $has_common_tags (ne $page_link $page.Permalink) }}
- {{ $page.Title }} {{ end }} {{ end }}
This is also very useful to use as AND filters when combined with where:
{{ $pages := where .Site.RegularPages "Type" "not in" (slice "page" "about") }}
{{ $pages := $pages | union (where .Site.RegularPages "Params.pinned" true) }}
{{ $pages := $pages | intersect (where .Site.RegularPages "Params.images" "!=" nil) }}
The above fetches regular pages not of page or about type unless they are pinned. And finally, we exclude all pages with no images set in Page params.
See union for OR.