localizable validation error

example_vocab_uniquekeys_test.go

@@ -6,6 +6,7 @@ import (
 	"strings"
 
 	"github.com/santhosh-tekuri/jsonschema/v6"
+	"golang.org/x/text/message"
 )
 
 // SchemaExt --
@@ -93,8 +94,8 @@ func (*UniqueKeys) KeywordPath() []string {
 	return []string{"uniqueKeys"}
 }
 
-func (k *UniqueKeys) String() string {
-	return fmt.Sprintf("items at %d and %d have same %s", k.Duplicates[0], k.Duplicates[1], k.Key)
+func (k *UniqueKeys) LocalizedString(p *message.Printer) string {
+	return p.Sprintf("items at %d and %d have same %s", k.Duplicates[0], k.Duplicates[1], k.Key)
 }
 
 // Example --

go.mod

@@ -2,4 +2,7 @@ module github.com/santhosh-tekuri/jsonschema/v6
 
 go 1.21
 
-require github.com/dlclark/regexp2 v1.11.0 // used for testing
+require (
+	github.com/dlclark/regexp2 v1.11.0 // used for testing
+	golang.org/x/text v0.14.0
+)

go.sum

@@ -1,2 +1,4 @@
 github.com/dlclark/regexp2 v1.11.0 h1:G/nrcoOa7ZXlpoa/91N3X7mM3r8eIlMBBJZvsz/mxKI=
 github.com/dlclark/regexp2 v1.11.0/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
+golang.org/x/text v0.14.0 h1:ScX5w1eTa3QqT8oi6+ziP7dTV1S2+ALU0bI+0zXKWiQ=
+golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=