:bug: The save path is incorrect when creating a sub-doc by ref in a doc with the same name Fix https://github.com/siyuan-note/siyuan/issues/8138

kernel/api/filetree.go

@@ -475,6 +475,12 @@ func createDocWithMd(c *gin.Context) {
 		return
 	}
 
+	var parentID string
+	parentIDArg := arg["parentID"]
+	if nil != parentIDArg {
+		parentID = parentIDArg.(string)
+	}
+
 	hPath := arg["path"].(string)
 	markdown := arg["markdown"].(string)
 
@@ -490,7 +496,7 @@ func createDocWithMd(c *gin.Context) {
 		hPath = "/" + hPath
 	}
 
-	id, err := model.CreateWithMarkdown(notebook, hPath, markdown)
+	id, err := model.CreateWithMarkdown(notebook, hPath, markdown, parentID)
 	if nil != err {
 		ret.Code = -1
 		ret.Msg = err.Error()

kernel/model/file.go

@@ -967,7 +967,7 @@ func CreateDocByMd(boxID, p, title, md string, sorts []string) (tree *parse.Tree
 	return
 }
 
-func CreateWithMarkdown(boxID, hPath, md string) (id string, err error) {
+func CreateWithMarkdown(boxID, hPath, md, parentID string) (id string, err error) {
 	box := Conf.Box(boxID)
 	if nil == box {
 		err = errors.New(Conf.Language(0))
@@ -977,7 +977,7 @@ func CreateWithMarkdown(boxID, hPath, md string) (id string, err error) {
 	WaitForWritingFiles()
 	luteEngine := util.NewLute()
 	dom := luteEngine.Md2BlockDOM(md, false)
-	id, _, err = createDocsByHPath(box.ID, hPath, dom)
+	id, _, err = createDocsByHPath(box.ID, hPath, dom, parentID)
 	return
 }
 
@@ -1380,7 +1380,7 @@ func CreateDailyNote(boxID string) (p string, existed bool, err error) {
 		return
 	}
 
-	id, existed, err := createDocsByHPath(box.ID, hPath, "")
+	id, existed, err := createDocsByHPath(box.ID, hPath, "", "")
 	if nil != err {
 		return
 	}

kernel/model/path.go

@@ -32,13 +32,30 @@ import (
 	"github.com/siyuan-note/siyuan/kernel/util"
 )
 
-func createDocsByHPath(boxID, hPath, content string) (id string, existed bool, err error) {
+func createDocsByHPath(boxID, hPath, content, parentID string) (id string, existed bool, err error) {
 	hPath = strings.TrimSuffix(hPath, ".sy")
 	pathBuilder := bytes.Buffer{}
 	pathBuilder.WriteString("/")
 	hPathBuilder := bytes.Buffer{}
 	hPathBuilder.WriteString("/")
 
+	if "" != parentID {
+		// The save path is incorrect when creating a sub-doc by ref in a doc with the same name https://github.com/siyuan-note/siyuan/issues/8138
+
+		// 在指定父文档 ID 的情况下优先查找父文档
+		parentHPath, name := path.Split(hPath)
+		parentHPath = strings.TrimSuffix(parentHPath, "/")
+		preferredParent := treenode.GetBlockTreeRootByHPathPreferredParentID(boxID, parentHPath, parentID)
+		if nil != preferredParent && preferredParent.ID == parentID {
+			// 如果父文档存在且 ID 一致，则直接在父文档下创建
+			id = ast.NewNodeID()
+			p := strings.TrimSuffix(preferredParent.Path, ".sy") + "/" + id + ".sy"
+			if _, err = createDoc(boxID, p, name, content); nil != err {
+				return
+			}
+		}
+	}
+
 	parts := strings.Split(hPath, "/")[1:]
 	for i, part := range parts {
 		hPathBuilder.WriteString(part)

kernel/treenode/blocktree.go

@@ -130,6 +130,38 @@ func GetBlockTreeRootByHPath(boxID, hPath string) (ret *BlockTree) {
 	return
 }
 
+func GetBlockTreeRootByHPathPreferredParentID(boxID, hPath, preferredParentID string) (ret *BlockTree) {
+	var roots []*BlockTree
+	blockTrees.Range(func(key, value interface{}) bool {
+		slice := value.(*btSlice)
+		slice.m.Lock()
+		for _, b := range slice.data {
+			if b.BoxID == boxID && b.HPath == hPath && b.RootID == b.ID {
+				if "" == preferredParentID {
+					ret = b
+					break
+				}
+
+				roots = append(roots, b)
+			}
+		}
+		slice.m.Unlock()
+		return nil == ret
+	})
+	if 1 > len(roots) {
+		return
+	}
+
+	for _, root := range roots {
+		if root.ID == preferredParentID {
+			ret = root
+			return
+		}
+	}
+	ret = roots[0]
+	return
+}
+
 func GetBlockTree(id string) (ret *BlockTree) {
 	if "" == id {
 		return