diff options
Diffstat (limited to 'docs/content/en/functions/collections/Intersect.md')
| -rw-r--r-- | docs/content/en/functions/collections/Intersect.md | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/docs/content/en/functions/collections/Intersect.md b/docs/content/en/functions/collections/Intersect.md new file mode 100644 index 000000000..6a2c131b4 --- /dev/null +++ b/docs/content/en/functions/collections/Intersect.md @@ -0,0 +1,37 @@ +--- +title: collections.Intersect +linkTitle: intersect +description: Returns the common elements of two arrays or slices, in the same order as the first array. +categories: [functions] +keywords: [] +menu: + docs: + parent: functions +function: + aliases: [intersect] + returnType: any + signatures: [collections.Intersect SET1 SET2] +relatedFunctions: + - collections.Complement + - collections.Intersect + - collections.SymDiff + - collections.Union +aliases: [/functions/intersect] +--- +A useful example is to use it as `AND` filters when combined with where: + +## AND filter in where query + +```go-html-template +{{ $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 parameters. + +See [union](/functions/collections/union) for `OR`. + + +[partials]: /templates/partials/ +[single]: /templates/single-page-templates/ |