Loops through any array, slice or map and returns a string of all the values separated by the delimiter. There is an optional third parameter that lets you choose a different delimiter to go between the last two values.
Maps will be sorted by the keys, and only a slice of the values will be returned, keeping a consistent output order.
Works on [lists](/templates/list/), [taxonomies](/taxonomies/displaying/), [terms](/templates/terms/), [groups](/templates/list/)
e.g.
// Front matter
+++
tags: [ "tag1", "tag2", "tag3" ]
+++
// Used anywhere in a template
Tags: {{ delimit .Params.tags ", " }}
// Outputs Tags: tag1, tag2, tag3
// Example with the optional "last" parameter
Tags: {{ delimit .Params.tags ", " " and " }}
// Outputs Tags: tag1, tag2 and tag3
### sort
Sorts maps, arrays and slices, returning a sorted slice. A sorted array of map values will be returned, with the keys eliminated. There are two optional arguments, which are `sortByField` and `sortAsc`. If left blank, sort will sort by keys (for maps) in ascending order.
Works on [lists](/templates/list/), [taxonomies](/taxonomies/displaying/), [terms](/templates/terms/), [groups](/templates/list/)
e.g.
// Front matter
+++
tags: [ "tag3", "tag1", "tag2" ]
+++
// Site config
+++
[params.authors]
[params.authors.Derek]
"firstName" = "Derek"
"lastName" = "Perkins"
[params.authors.Joe]
"firstName" = "Joe"
"lastName" = "Bergevin"
[params.authors.Tanner]
"firstName" = "Tanner"
"lastName" = "Linsley"
+++
// Use default sort options - sort by key / ascending
Tags: {{ range sort .Params.tags }}{{ . }} {{ end }}
// Outputs Tags: tag1 tag2 tag3
// Sort by value / descending
Tags: {{ range sort .Params.tags "value" "desc" }}{{ . }} {{ end }}
// Outputs Tags: tag3 tag2 tag1
// Use default sort options - sort by value / descending
Authors: {{ range sort .Site.Params.authors }}{{ .firstName }} {{ end }}
// Outputs Authors: Derek Joe Tanner
// Use default sort options - sort by value / descending
Authors: {{ range sort .Site.Params.authors "lastName" "desc" }}{{ .lastName }} {{ end }}
Checks if an element is in an array (or slice) and returns a boolean. The elements supported are strings, integers and floats (only float64 will match as expected). In addition, it can also check if a substring exists in a string.
{{ if in "this string contains a substring" "substring" }}Substring found!{{ end }}
### intersect
Given two arrays (or slices), this function will return the common elements in the arrays. The elements supported are strings, integers and floats (only float64).
A useful example of this functionality is a 'similar posts' block. Create a list of links to posts where any of the tags in the current post match any tags in other posts.
Looks up a content page by relative path or logical name to return the permalink (`ref`) or relative permalink (`relref`). Requires a Node or Page object (usually satisfied with `.`). Used in the [`ref` and `relref` shortcodes]({{% ref "extras/crossreferences.md" %}}).