🎨 Shallow clone the corresponding database when the template contains database blocks https://github.com/siyuan-note/siyuan/issues/9494

kernel/model/export.go

@@ -1890,16 +1890,10 @@ func exportTree(tree *parse.Tree, wysiwyg, expandKaTexMacros, keepFold bool,
 			return ast.WalkContinue
 		}
 
-		var view *av.View
-		if "" != attrView.ViewID {
-			for _, v := range attrView.Views {
-				if v.ID == attrView.ViewID {
-					view = v
-					break
-				}
-			}
-		} else {
-			view = attrView.Views[0]
+		view, err := attrView.GetView()
+		if nil != err {
+			logging.LogErrorf("get attribute view [%s] failed: %s", avID, err)
+			return ast.WalkContinue
 		}
 
 		table, err := renderAttributeViewTable(attrView, view)

kernel/model/template.go

@@ -290,9 +290,41 @@ func renderTemplate(p, id string, preview bool) (string, error) {
 				if nil != cloned {
 					n.AttributeViewID = cloned.ID
 					if !preview {
+						// 非预览时持久化数据库
 						if saveErr := av.SaveAttributeView(cloned); nil != saveErr {
 							logging.LogErrorf("save attribute view [%s] failed: %s", cloned.ID, saveErr)
 						}
+					} else {
+						// 预览时使用简单表格渲染
+						view, getErr := attrView.GetView()
+						if nil != getErr {
+							logging.LogErrorf("get attribute view [%s] failed: %s", n.AttributeViewID, getErr)
+							return ast.WalkContinue
+						}
+
+						table, renderErr := renderAttributeViewTable(attrView, view)
+						if nil != renderErr {
+							logging.LogErrorf("render attribute view [%s] table failed: %s", n.AttributeViewID, renderErr)
+							return ast.WalkContinue
+						}
+
+						var aligns []int
+						for range table.Columns {
+							aligns = append(aligns, 0)
+						}
+						mdTable := &ast.Node{Type: ast.NodeTable, TableAligns: aligns}
+						mdTableHead := &ast.Node{Type: ast.NodeTableHead}
+						mdTable.AppendChild(mdTableHead)
+						mdTableHeadRow := &ast.Node{Type: ast.NodeTableRow, TableAligns: aligns}
+						mdTableHead.AppendChild(mdTableHeadRow)
+						for _, col := range table.Columns {
+							cell := &ast.Node{Type: ast.NodeTableCell}
+							cell.AppendChild(&ast.Node{Type: ast.NodeText, Tokens: []byte(col.Name)})
+							mdTableHeadRow.AppendChild(cell)
+						}
+
+						n.InsertBefore(mdTable)
+						unlinks = append(unlinks, n)
 					}
 				}
 			}