fix(FormList): setFields failed

packages/components/form/FormList.tsx

@@ -122,7 +122,7 @@ const FormList: React.FC<TdFormListProps> = (props) => {
       if (data !== undefined) callback(formItemRef, data);
     });
 
-    updateFormList(newFields, fieldData);
+    updateFormList(newFields, cloneDeep(fieldData));
   }
 
   useEffect(() => {
@@ -177,8 +177,21 @@ const FormList: React.FC<TdFormListProps> = (props) => {
           });
         });
       },
-      // TODO 支持局部更新数据
       setValue: (fieldData) => {
+        // 支持局部更新数据: { [index]: value }
+        if (fieldData !== null && typeof fieldData === 'object' && !Array.isArray(fieldData)) {
+          const currentValue = cloneDeep(get(form?.store, fullPath) || []);
+          Object.keys(fieldData).forEach((key) => {
+            const index = Number(key);
+            if (!Number.isNaN(index)) {
+              currentValue[index] = merge({}, currentValue[index], fieldData[key]);
+            }
+          });
+          setListFields(currentValue, (formItemRef, data) => {
+            formItemRef?.current?.setValue?.(data);
+          });
+          return;
+        }
         setListFields(fieldData, (formItemRef, data) => {
           formItemRef?.current?.setValue?.(data);
         });

packages/components/form/hooks/useInstance.tsx

@@ -1,4 +1,4 @@
-import { cloneDeep, isArray, isEmpty, isFunction, isObject, merge, set, get } from 'lodash-es';
+import { cloneDeep, get, isArray, isEmpty, isFunction, isObject, merge, set } from 'lodash-es';
 import log from '@tdesign/common-js/log/index';
 import useConfig from '../../hooks/useConfig';
 import { calcFieldValue, findFormItem, travelMapFromObject } from '../utils';
@@ -162,6 +162,15 @@ export default function useInstance(
     return cloneDeep(fieldsValue);
   }
 
+  /**
+   * 将值同步写入 floatingFormDataRef 和 form.store
+   *（无对应 FormItem 时的 fallback）
+   */
+  function updateFloatingValue(name: NamePath, value: any) {
+    set(floatingFormDataRef.current, name, value);
+    set(form?.store, name, value);
+  }
+
   /**
    * 对外方法，设置对应 FormItem 的值
    */
@@ -182,9 +191,8 @@ export default function useInstance(
           setValueByPath(value[key], [...path, key]);
         });
       } else {
-        set(floatingFormDataRef.current, path, value);
         // 确保 store 始终包含所有被 set 的字段
-        set(form?.store, path, value);
+        updateFloatingValue(path, value);
       }
     };
 
@@ -198,9 +206,13 @@ export default function useInstance(
     if (!Array.isArray(fields)) throw new TypeError('The parameter of "setFields" must be an array');
 
     fields.forEach((field) => {
-      const { name, ...restFields } = field;
+      const { name, value, ...restFields } = field;
       const formItemRef = findFormItem(name, formMapRef);
-      formItemRef?.current?.setField(restFields);
+      if (formItemRef?.current) {
+        formItemRef.current.setField({ value, ...restFields });
+      } else if ('value' in field) {
+        updateFloatingValue(name, value);
+      }
     });
   }