listable: Fix incorrect unmarshaling of null to []T{null}

nekohasekai · nekohasekai · commit be9840c70ff3 · 2025-01-09T15:57:12.000+08:00
diff --git a/common/json/badoption/listable.go b/common/json/badoption/listable.go
@@ -18,6 +18,9 @@ func (l Listable[T]) MarshalJSONContext(ctx context.Context) ([]byte, error) {
 }
 
 func (l *Listable[T]) UnmarshalJSONContext(ctx context.Context, content []byte) error {
+	if string(content) == "null" {
+		return nil
+	}
 	var singleItem T
 	err := json.UnmarshalContextDisallowUnknownFields(ctx, content, &singleItem)
 	if err == nil {

Original file line number	Diff line number	Diff line change
`@@ -18,6 +18,9 @@ func (l Listable[T]) MarshalJSONContext(ctx context.Context) ([]byte, error) {`
`18`	`18`	`}`
`19`	`19`
`20`	`20`	`func (l *Listable[T]) UnmarshalJSONContext(ctx context.Context, content []byte) error {`
	`21`	`+ if string(content) == "null" {`
	`22`	`+ return nil`
	`23`	`+ }`
`21`	`24`	`var singleItem T`
`22`	`25`	`err := json.UnmarshalContextDisallowUnknownFields(ctx, content, &singleItem)`
`23`	`26`	`if err == nil {`