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Sort function names in templates documentation
The documentation on the functions is long. It is easier to find a function name when they are sorted within the sections. Fixes #981
This commit is contained in:
mdhender
bep
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6b50c8fb82
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@ -26,17 +26,36 @@ and other basic tools; these are listed in the
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## General
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### isset
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Return true if the parameter is set.
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Takes either a slice, array or channel and an index or a map and a key as input.
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### delimit
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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.
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Maps will be sorted by the keys, and only a slice of the values will be returned, keeping a consistent output order.
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Works on [lists](/templates/list/), [taxonomies](/taxonomies/displaying/), [terms](/templates/terms/), [groups](/templates/list/)
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e.g.
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// Front matter
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+++
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tags: [ "tag1", "tag2", "tag3" ]
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+++
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// Used anywhere in a template
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Tags: {{ delimit .Params.tags ", " }}
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// Outputs Tags: tag1, tag2, tag3
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// Example with the optional "last" parameter
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Tags: {{ delimit .Params.tags ", " " and " }}
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// Outputs Tags: tag1, tag2 and tag3
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e.g. `{{ if isset .Params "project_url" }} {{ index .Params "project_url" }}{{ end }}`
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### echoParam
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If parameter is set, then echo it.
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e.g. `{{echoParam .Params "project_url" }}`
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### eq
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Return true if the parameters are equal.
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@ -44,6 +63,7 @@ e.g.
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{{ if eq .Section "blog" }}current{{ end }}
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### first
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Slices an array to only the first X elements.
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@ -55,6 +75,93 @@ e.g.
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{{ .Render "summary" }}
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{{ end }}
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### in
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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.
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e.g.
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{{ if in .Params.tags "Git" }}Follow me on GitHub!{{ end }}
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or
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{{ if in "this string contains a substring" "substring" }}Substring found!{{ end }}
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### intersect
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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).
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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.
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e.g.
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<ul>
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{{ $page_link := .Permalink }}
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{{ $tags := .Params.tags }}
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{{ range .Site.Recent }}
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{{ $page := . }}
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{{ $has_common_tags := intersect $tags .Params.tags | len | lt 0 }}
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{{ if and $has_common_tags (ne $page_link $page.Permalink) }}
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<li><a href="{{ $page.Permalink }}">{{ $page.Title }}</a></li>
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{{ end }}
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{{ end }}
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</ul>
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### isset
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Return true if the parameter is set.
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Takes either a slice, array or channel and an index or a map and a key as input.
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e.g. `{{ if isset .Params "project_url" }} {{ index .Params "project_url" }}{{ end }}`
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### sort
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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.
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Works on [lists](/templates/list/), [taxonomies](/taxonomies/displaying/), [terms](/templates/terms/), [groups](/templates/list/)
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e.g.
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// Front matter
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+++
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tags: [ "tag3", "tag1", "tag2" ]
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+++
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// Site config
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+++
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[params.authors]
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[params.authors.Derek]
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"firstName" = "Derek"
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"lastName" = "Perkins"
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[params.authors.Joe]
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"firstName" = "Joe"
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"lastName" = "Bergevin"
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[params.authors.Tanner]
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"firstName" = "Tanner"
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"lastName" = "Linsley"
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+++
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// Use default sort options - sort by key / ascending
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Tags: {{ range sort .Params.tags }}{{ . }} {{ end }}
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// Outputs Tags: tag1 tag2 tag3
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// Sort by value / descending
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Tags: {{ range sort .Params.tags "value" "desc" }}{{ . }} {{ end }}
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// Outputs Tags: tag3 tag2 tag1
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// Use default sort options - sort by value / descending
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Authors: {{ range sort .Site.Params.authors }}{{ .firstName }} {{ end }}
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// Outputs Authors: Derek Joe Tanner
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// Use default sort options - sort by value / descending
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Authors: {{ range sort .Site.Params.authors "lastName" "desc" }}{{ .lastName }} {{ end }}
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// Outputs Authors: Perkins Linsley Bergevin
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### where
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Filters an array to only elements containing a matching value for a given field.
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@ -104,105 +211,6 @@ Following operators are now available
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{{ .Content }}
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{{ end }}
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### delimit
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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.
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Maps will be sorted by the keys, and only a slice of the values will be returned, keeping a consistent output order.
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Works on [lists](/templates/list/), [taxonomies](/taxonomies/displaying/), [terms](/templates/terms/), [groups](/templates/list/)
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e.g.
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// Front matter
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+++
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tags: [ "tag1", "tag2", "tag3" ]
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+++
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// Used anywhere in a template
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Tags: {{ delimit .Params.tags ", " }}
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// Outputs Tags: tag1, tag2, tag3
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// Example with the optional "last" parameter
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Tags: {{ delimit .Params.tags ", " " and " }}
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// Outputs Tags: tag1, tag2 and tag3
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### sort
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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.
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Works on [lists](/templates/list/), [taxonomies](/taxonomies/displaying/), [terms](/templates/terms/), [groups](/templates/list/)
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e.g.
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// Front matter
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+++
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tags: [ "tag3", "tag1", "tag2" ]
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+++
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// Site config
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+++
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[params.authors]
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[params.authors.Derek]
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"firstName" = "Derek"
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"lastName" = "Perkins"
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[params.authors.Joe]
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"firstName" = "Joe"
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"lastName" = "Bergevin"
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[params.authors.Tanner]
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"firstName" = "Tanner"
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"lastName" = "Linsley"
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+++
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// Use default sort options - sort by key / ascending
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Tags: {{ range sort .Params.tags }}{{ . }} {{ end }}
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// Outputs Tags: tag1 tag2 tag3
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// Sort by value / descending
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Tags: {{ range sort .Params.tags "value" "desc" }}{{ . }} {{ end }}
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// Outputs Tags: tag3 tag2 tag1
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// Use default sort options - sort by value / descending
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Authors: {{ range sort .Site.Params.authors }}{{ .firstName }} {{ end }}
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// Outputs Authors: Derek Joe Tanner
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// Use default sort options - sort by value / descending
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Authors: {{ range sort .Site.Params.authors "lastName" "desc" }}{{ .lastName }} {{ end }}
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// Outputs Authors: Perkins Linsley Bergevin
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### in
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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.
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e.g.
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{{ if in .Params.tags "Git" }}Follow me on GitHub!{{ end }}
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or
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{{ if in "this string contains a substring" "substring" }}Substring found!{{ end }}
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### intersect
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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).
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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.
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e.g.
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<ul>
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{{ $page_link := .Permalink }}
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{{ $tags := .Params.tags }}
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{{ range .Site.Recent }}
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{{ $page := . }}
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{{ $has_common_tags := intersect $tags .Params.tags | len | lt 0 }}
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{{ if and $has_common_tags (ne $page_link $page.Permalink) }}
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<li><a href="{{ $page.Permalink }}">{{ $page.Title }}</a></li>
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{{ end }}
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{{ end }}
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</ul>
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## Math
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@ -222,18 +230,6 @@ e.g.
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<td><code>{{add 1 2}}</code> → 3</td>
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</tr>
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<tr>
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<td><code>sub</code></td>
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<td>Subtracts two integers.</td>
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<td><code>{{sub 3 2}}</code> → 1</td>
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</tr>
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<tr>
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<td><code>mul</code></td>
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<td>Multiplies two integers.</td>
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<td><code>{{mul 2 3}}</code> → 6</td>
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</tr>
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<tr>
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<td><code>div</code></td>
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<td>Divides two integers.</td>
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@ -251,16 +247,65 @@ e.g.
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<td>Boolean of modulus of two integers. <code>true</code> if modulus is 0.</td>
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<td><code>{{modBool 15 3}}</code> → true</td>
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</tr>
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<tr>
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<td><code>mul</code></td>
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<td>Multiplies two integers.</td>
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<td><code>{{mul 2 3}}</code> → 6</td>
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</tr>
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<tr>
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<td><code>sub</code></td>
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<td>Subtracts two integers.</td>
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<td><code>{{sub 3 2}}</code> → 1</td>
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</tr>
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</tbody>
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</table>
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## Strings
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### urlize
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Takes a string and sanitizes it for usage in URLs, converts spaces to "-".
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### chomp
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Removes any trailing newline characters. Useful in a pipeline to remove newlines added by other processing (including `markdownify`).
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e.g., `{{chomp "<p>Blockhead</p>\n"` → `"<p>Blockhead</p>"`
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### dateFormat
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Converts the textual representation of the datetime into the other form or returns it of Go `time.Time` type value. These are formatted with the layout string.
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e.g. `{{ dateFormat "Monday, Jan 2, 2006" "2015-01-21" }}` →"Wednesday, Jan 21, 2015"
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### highlight
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Take a string of code and a language, uses Pygments to return the syntax highlighted code in HTML. Used in the [highlight shortcode](/extras/highlighting/).
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### lower
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Convert all characters in string to lowercase.
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e.g. `{{lower "BatMan"}}` → "batman"
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### markdownify
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This will run the string through the Markdown processesor. The result will be declared as "safe" so Go templates will not filter it.
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e.g. `{{ .Title | markdownify }}`
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### ref, relref
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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" %}}).
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e.g. {{ ref . "about.md" }}
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### replace
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Replace all occurences of the search string with the replacement string.
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e.g. `{{ replace "Batman and Robin" "Robin" "Catwoman" }}` → "Batman and Catwoman"
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e.g. `<a href="/tags/{{ . | urlize }}">{{ . }}</a>`
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### safeHTML
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Declares the provided string as a "safe" HTML document fragment
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@ -299,6 +344,7 @@ Example: Given a site-wide `config.toml` that contains this menu entry:
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* `<a {{ printf "href=%q" .URL | safeHTMLAttr }}>` ⇒ `<a href="irc://irc.freenode.net/#golang">` (Good!)
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-->
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### safeCSS
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Declares the provided string as a known "safe" CSS string
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so Go html/templates will not filter it.
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@ -317,6 +363,7 @@ Example: Given `style = "color: red;"` defined in the front matter of your `.md`
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Note: "ZgotmplZ" is a special value that indicates that unsafe content reached a
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CSS or URL context.
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### safeURL
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Declares the provided string as a "safe" URL or URL substring (see [RFC 3986][]).
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A URL like `javascript:checkThatFormNotEditedBeforeLeavingPage()` from a trusted
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@ -355,54 +402,30 @@ To fix this, add ` | safeURL` after `.URL` on the 3rd line, like this:
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With this change, we finally get `<li><a href="irc://irc.freenode.net/#golang">IRC: #golang at freenode</a></li>`
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as intended.
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### markdownify
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This will run the string through the Markdown processesor. The result will be declared as "safe" so Go templates will not filter it.
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e.g. `{{ .Title | markdownify }}`
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### lower
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Convert all characters in string to lowercase.
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e.g. `{{lower "BatMan"}}` → "batman"
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### upper
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Convert all characters in string to uppercase.
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e.g. `{{upper "BatMan"}}` → "BATMAN"
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### title
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Convert all characters in string to titlecase.
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e.g. `{{title "BatMan"}}` → "Batman"
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### chomp
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Removes any trailing newline characters. Useful in a pipeline to remove newlines added by other processing (including `markdownify`).
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e.g., `{{chomp "<p>Blockhead</p>\n"` → `"<p>Blockhead</p>"`
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### trim
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Trim returns a slice of the string with all leading and trailing characters contained in cutset removed.
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e.g. `{{ trim "++Batman--" "+-" }}` → "Batman"
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### replace
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Replace all occurences of the search string with the replacement string.
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e.g. `{{ replace "Batman and Robin" "Robin" "Catwoman" }}` → "Batman and Catwoman"
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### upper
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Convert all characters in string to uppercase.
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### dateFormat
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Converts the textual representation of the datetime into the other form or returns it of Go `time.Time` type value. These are formatted with the layout string.
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e.g. `{{upper "BatMan"}}` → "BATMAN"
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e.g. `{{ dateFormat "Monday, Jan 2, 2006" "2015-01-21" }}` →"Wednesday, Jan 21, 2015"
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### highlight
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Take a string of code and a language, uses Pygments to return the syntax highlighted code in HTML. Used in the [highlight shortcode](/extras/highlighting/).
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### urlize
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Takes a string and sanitizes it for usage in URLs, converts spaces to "-".
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### ref, relref
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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" %}}).
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e.g. `<a href="/tags/{{ . | urlize }}">{{ . }}</a>`
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e.g. {{ ref . "about.md" }}
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## Advanced
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