tpl/strings: Add strings.FirstUpper

Fixes #5174

diff --git a/docs/content/en/content-management/taxonomies.md b/docs/content/en/content-management/taxonomies.md
index 8260cfc1f2b02b2f314cd3373a22f521c9cd8f63..c06b2385b2b64de134eeb120476b0dea7fe3c2dd 100644 (file)
--- a/docs/content/en/content-management/taxonomies.md
+++ b/docs/content/en/content-management/taxonomies.md
@@ -150,9 +150,9 @@ Much like regular pages, taxonomy list [permalinks](/content-management/urls/) a
 {{% /note %}}
 
 {{% warning "`preserveTaxonomyNames` behaviour change" %}}
-Before 0.49, Hugo would title-ize the taxonomy values for titles even if `preserveTaxonomyNames` was active. This no longer the case, which (for instance) makes it possible to have fully lower-case values.
+Before 0.49, Hugo would make the first character upper case for the taxonomy values for titles even if `preserveTaxonomyNames` was active. This no longer the case, which (for instance) makes it possible to have fully lower-case values.
 
-If you actually need to title-ize these values, you can do so using the [`title` template function][].
+If you actually need to title-ize these values, you can do so using the `strings.FirstUpper` template function.
 {{% /warning %}}
 
 ## Add Taxonomies to Content
@@ -211,7 +211,6 @@ If you need to add custom metadata to your taxonomy terms, you will need to crea
 
 You can later use your custom metadata as shown in the [Taxonomy Terms Templates documentation](/templates/taxonomy-templates/#displaying-custom-metadata-in-taxonomy-terms-templates).
 
-[`title` template function]: /functions/title/
 [`urlize` template function]: /functions/urlize/
 [content section]: /content-management/sections/
 [content type]: /content-management/types/

diff --git a/tpl/strings/init.go b/tpl/strings/init.go
index 8ff4cf98f5960d32a77808b91dc7afe29244adcf..7e638e6fc6a2b2c0060303726cacf5a4fd310f2d 100644 (file)
--- a/tpl/strings/init.go
+++ b/tpl/strings/init.go
@@ -155,6 +155,13 @@ func init() {
                        },
                )
 
+               ns.AddMethodMapping(ctx.FirstUpper,
+                       nil,
+                       [][2]string{
+                               {`{{ "hugo rocks!" | strings.FirstUpper }}`, `Hugo rocks!`},
+                       },
+               )
+
                ns.AddMethodMapping(ctx.Truncate,
                        []string{"truncate"},
                        [][2]string{

diff --git a/tpl/strings/strings.go b/tpl/strings/strings.go
index 1864bb9e054966074206497c33924d2efbcbed7b..9b8409ed6426cd2af6a849fda58c5747d7ce8b80 100644 (file)
--- a/tpl/strings/strings.go
+++ b/tpl/strings/strings.go
@@ -325,6 +325,16 @@ func (ns *Namespace) Title(s interface{}) (string, error) {
        return ns.titleFunc(ss), nil
 }
 
+// FirstUpper returns a string with the first character as upper case.
+func (ns *Namespace) FirstUpper(s interface{}) (string, error) {
+       ss, err := cast.ToStringE(s)
+       if err != nil {
+               return "", err
+       }
+
+       return helpers.FirstUpper(ss), nil
+}
+
 // ToLower returns a copy of the input s with all Unicode letters mapped to their
 // lower case.
 func (ns *Namespace) ToLower(s interface{}) (string, error) {