fix(admin): city-scoped district pick and clearer overlap errors

Region partners only select districts under the chosen city; overlap errors name the occupying partner.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/admin-web/src/components/CityDistrictMultiSelect.tsx

@@ -0,0 +1,42 @@
+import { useMemo } from 'react';
+import { Select } from 'antd';
+import { getDistrictOptionsByCityCode } from '../lib/china-region';
+
+type Props = {
+  cityCode?: string | null;
+  value?: string[];
+  onChange?: (value: string[]) => void;
+  placeholder?: string;
+  disabled?: boolean;
+};
+
+/** 已选开城城市后，仅多选该市下区县（不再选省/市） */
+export default function CityDistrictMultiSelect({
+  cityCode,
+  value,
+  onChange,
+  placeholder,
+  disabled,
+}: Props) {
+  const options = useMemo(() => getDistrictOptionsByCityCode(cityCode), [cityCode]);
+  const ready = Boolean(cityCode) && options.length > 0;
+
+  return (
+    <Select
+      mode="multiple"
+      allowClear
+      showSearch
+      optionFilterProp="label"
+      value={value}
+      onChange={onChange}
+      disabled={disabled || !ready}
+      placeholder={
+        placeholder ??
+        (cityCode ? (ready ? '请选择区县（可多选）' : '该城市暂无区县数据') : '请先选择开城城市')
+      }
+      options={options}
+      style={{ width: '100%' }}
+      maxTagCount="responsive"
+    />
+  );
+}

apps/admin-web/src/components/CityPartnersPanel.tsx

@@ -1,7 +1,6 @@
 import { useCallback, useEffect, useState } from 'react';
 import {
   Button,
-  Cascader,
   Checkbox,
   Drawer,
   Form,
@@ -27,8 +26,9 @@ import {
   type PartnerPermissionKey,
 } from '@dukang/shared-types';
 import { request, type Paginated } from '../lib/api';
-import { CHINA_REGION_OPTIONS } from '../lib/china-region';
+import { districtCodeLabel } from '../lib/china-region';
 import { fmtTime } from '../lib/constants';
+import CityDistrictMultiSelect from './CityDistrictMultiSelect';
 import PartnerSubAccountList from './PartnerSubAccountList';
 
 type PartnerRow = {
@@ -65,6 +65,7 @@ type PartnerDetail = PartnerRow & {
 
 type Props = {
   cityId: string;
+  cityCode?: string;
   maxPartnerCommissionRate?: number;
   onChanged?: () => void;
 };
@@ -102,7 +103,21 @@ function commissionSumError(
   return null;
 }
 
-export default function CityPartnersPanel({ cityId, maxPartnerCommissionRate = 0.05, onChanged }: Props) {
+function formatApiError(err: unknown): string | null {
+  if (err && typeof err === 'object' && 'errorFields' in err) return null;
+  if (!(err instanceof Error)) return '操作失败';
+  return err.message.replace(/\b(\d{6})\b/g, (code) => {
+    const label = districtCodeLabel(code);
+    return label !== code ? `${label}(${code})` : code;
+  });
+}
+
+export default function CityPartnersPanel({
+  cityId,
+  cityCode,
+  maxPartnerCommissionRate = 0.05,
+  onChanged,
+}: Props) {
   const [editForm] = Form.useForm();
   const [createForm] = Form.useForm();
   const [subForm] = Form.useForm();
@@ -156,29 +171,34 @@ export default function CityPartnersPanel({ cityId, maxPartnerCommissionRate = 0
 
   async function savePartner() {
     if (!detail) return;
-    const v = await editForm.validateFields();
-    const err = commissionSumError(
-      Number(v.orderCommissionRate ?? 0),
-      Number(v.redeemCommissionRate ?? 0),
-      maxPartnerCommissionRate,
-    );
-    if (err) {
-      message.error(err);
-      return;
+    try {
+      const v = await editForm.validateFields();
+      const err = commissionSumError(
+        Number(v.orderCommissionRate ?? 0),
+        Number(v.redeemCommissionRate ?? 0),
+        maxPartnerCommissionRate,
+      );
+      if (err) {
+        message.error(err);
+        return;
+      }
+      await request(`/admin/partners/${detail.id}`, {
+        method: 'PUT',
+        body: JSON.stringify({
+          ...v,
+          orderCommissionRate: Number(v.orderCommissionRate ?? 0) / 100,
+          redeemCommissionRate: Number(v.redeemCommissionRate ?? 3) / 100,
+          districtCodes: editScopeType === CityPartnerScopeType.DISTRICT ? flattenDistrictCodes(v.districtCodes) : undefined,
+        }),
+      });
+      message.success('已保存');
+      setDrawerOpen(false);
+      void loadPartners();
+      onChanged?.();
+    } catch (e) {
+      const msg = formatApiError(e);
+      if (msg) message.error(msg);
     }
-    await request(`/admin/partners/${detail.id}`, {
-      method: 'PUT',
-      body: JSON.stringify({
-        ...v,
-        orderCommissionRate: Number(v.orderCommissionRate ?? 0) / 100,
-        redeemCommissionRate: Number(v.redeemCommissionRate ?? 3) / 100,
-        districtCodes: editScopeType === CityPartnerScopeType.DISTRICT ? flattenDistrictCodes(v.districtCodes) : undefined,
-      }),
-    });
-    message.success('已保存');
-    setDrawerOpen(false);
-    void loadPartners();
-    onChanged?.();
   }
 
   async function deleteSubAccount(subId: string) {
@@ -264,8 +284,12 @@ export default function CityPartnersPanel({ cityId, maxPartnerCommissionRate = 0
                       <Select options={SCOPE_OPTIONS} onChange={(v) => setEditScopeType(v)} />
                     </Form.Item>
                     {editScopeType === CityPartnerScopeType.DISTRICT && (
-                      <Form.Item name="districtCodes" label="区县">
-                        <Cascader options={CHINA_REGION_OPTIONS} multiple changeOnSelect />
+                      <Form.Item
+                        name="districtCodes"
+                        label="区县"
+                        extra="仅可选当前开城城市下的区县；不可与其他区域合伙人重合"
+                      >
+                        <CityDistrictMultiSelect cityCode={cityCode} />
                       </Form.Item>
                     )}
                     <Space style={{ width: '100%' }} size="large">
@@ -319,30 +343,35 @@ export default function CityPartnersPanel({ cityId, maxPartnerCommissionRate = 0
       </Drawer>
 
       <Modal title="新建城市合伙人" open={createOpen} width={560} onCancel={() => setCreateOpen(false)} onOk={async () => {
-        const v = await createForm.validateFields();
-        const err = commissionSumError(
-          Number(v.orderCommissionRate ?? 0),
-          Number(v.redeemCommissionRate ?? 3),
-          maxPartnerCommissionRate,
-        );
-        if (err) {
-          message.error(err);
-          return;
+        try {
+          const v = await createForm.validateFields();
+          const err = commissionSumError(
+            Number(v.orderCommissionRate ?? 0),
+            Number(v.redeemCommissionRate ?? 3),
+            maxPartnerCommissionRate,
+          );
+          if (err) {
+            message.error(err);
+            return;
+          }
+          await request('/admin/partners', {
+            method: 'POST',
+            body: JSON.stringify({
+              ...v,
+              cityId,
+              orderCommissionRate: Number(v.orderCommissionRate ?? 0) / 100,
+              redeemCommissionRate: Number(v.redeemCommissionRate ?? 3) / 100,
+              districtCodes: createScopeType === CityPartnerScopeType.DISTRICT ? flattenDistrictCodes(v.districtCodes) : undefined,
+            }),
+          });
+          message.success('已创建');
+          setCreateOpen(false);
+          void loadPartners();
+          onChanged?.();
+        } catch (e) {
+          const msg = formatApiError(e);
+          if (msg) message.error(msg);
         }
-        await request('/admin/partners', {
-          method: 'POST',
-          body: JSON.stringify({
-            ...v,
-            cityId,
-            orderCommissionRate: Number(v.orderCommissionRate ?? 0) / 100,
-            redeemCommissionRate: Number(v.redeemCommissionRate ?? 3) / 100,
-            districtCodes: createScopeType === CityPartnerScopeType.DISTRICT ? flattenDistrictCodes(v.districtCodes) : undefined,
-          }),
-        });
-        message.success('已创建');
-        setCreateOpen(false);
-        void loadPartners();
-        onChanged?.();
       }}>
         <Form form={createForm} layout="vertical">
           <Form.Item name="companyName" label="公司名" rules={[{ required: true }]}><Input /></Form.Item>
@@ -353,8 +382,13 @@ export default function CityPartnersPanel({ cityId, maxPartnerCommissionRate = 0
             <Select options={SCOPE_OPTIONS} onChange={(v) => setCreateScopeType(v)} />
           </Form.Item>
           {createScopeType === CityPartnerScopeType.DISTRICT && (
-            <Form.Item name="districtCodes" label="区县" rules={[{ required: true }]}>
-              <Cascader options={CHINA_REGION_OPTIONS} multiple changeOnSelect />
+            <Form.Item
+              name="districtCodes"
+              label="区县"
+              rules={[{ required: true, message: '请选择至少一个区县' }]}
+              extra="仅可选当前开城城市下的区县；不可与其他区域合伙人重合"
+            >
+              <CityDistrictMultiSelect cityCode={cityCode} />
             </Form.Item>
           )}
           <Space style={{ width: '100%' }} size="large">