cherry-pick: Action中Required属性和Form校验合并 #4689 #4677 (#4697)

docs/zh-CN/components/action.md

@@ -648,6 +648,77 @@ Access-Control-Expose-Headers:  Content-Disposition
 
 该 actionType 为[FormItem-Table](./form/input-table#按钮触发新增行)专用行为
 
+### 校验表单
+
+下面的表单中会优先校验按钮`required`属性包含的表单项，当所有的字段校验完毕后，才会校验表单中固有的项目。需要额外注意的是，当按钮中的 `required` 和对应表单项本身的 `required` 属性冲突时，最终校验方式是`"required": true`。
+
+```schema: scope="body"
+{
+    "type":"button",
+    "label":"打开弹窗表单",
+    "level": "primary",
+    "actionType":"dialog",
+    "dialog":{
+        "type":"dialog",
+        "title":"系统提示",
+        "closeOnEsc": true,
+        "body": [
+            {
+                "type":"form",
+                "title":"表单",
+                "api":"/api/mock2/form/saveForm",
+                "body":[
+                    {
+                        "label":"字段a",
+                        "type":"input-text",
+                        "name":"a",
+                        "required":true
+                    },
+                    {
+                        "name":"b",
+                        "label":"字段b",
+                        "type":"input-text",
+                        "validations": {
+                          "minimum": 1,
+                          "isNumeric": true,
+                          "isInt": true
+                        },
+                        "required": false
+                    },
+                    {
+                        "name":"c",
+                        "label":"字段c",
+                        "type":"input-text"
+                    },
+                    {
+                        "name":"d",
+                        "label":"字段d",
+                        "type":"input-text",
+                        "required":true
+                    }
+                ]
+            }
+        ],
+        "actions":[
+            {
+                "type":"submit",
+                "label":"提交-校验字段b",
+                "actionType":"submit",
+                "required":["b"],
+                "level": "info"
+            },
+            {
+                "type":"submit",
+                "label":"提交-校验字段b, c",
+                "actionType":"submit",
+                "required":["b", "c"],
+                "level": "info"
+            }
+        ]
+    }
+}
+```
+
 ### 重置表单
 
 在 form 中，配置`"type": "reset"`的按钮，可以实现重置表单数据的功能

packages/amis-core/src/renderers/Form.tsx

@@ -922,13 +922,13 @@ export default class Form extends React.Component<FormProps, object> {
     );
   }
 
-  handleAction(
+  async handleAction(
     e: React.UIEvent<any> | void,
     action: ActionObject,
     data: object,
     throwErrors: boolean = false,
     delegate?: IScopedContext
-  ): any {
+  ): Promise<any> {
     const {
       store,
       onSubmit,
@@ -967,13 +967,16 @@ export default class Form extends React.Component<FormProps, object> {
       data = store.data;
     }
     if (Array.isArray(action.required) && action.required.length) {
+      /** 如果是按钮指定了required，则校验前先清空一下遗留的校验报错 */
+      store.clearErrors();
+
       const fields = action.required.map(item => ({
         name: item,
         rules: {isRequired: true}
       }));
+      const validationRes = await store.validateFields(fields);
 
-      return store.validateFields(fields).then(async result => {
-        if (!result) {
+      if (!validationRes) {
         const dispatcher = await dispatchEvent(
           'validateError',
           this.props.data
@@ -985,17 +988,9 @@ export default class Form extends React.Component<FormProps, object> {
         /** 抛异常是为了在dialog中catch这个错误，避免弹窗直接关闭 */
         return Promise.reject(__('Form.validateFailed'));
       } else {
-          dispatchEvent('validateSucc', this.props.data);
-          this.handleAction(
-            e,
-            {...action, required: undefined},
-            data,
-            throwErrors,
-            delegate
-          );
+        /** 重置validated状态，保证submit时触发表单中的校验项 */
+        store.clearErrors();
       }
-        return;
-      });
     }
     if (
       action.type === 'submit' ||