feat(apply): add order number validation and auto-fetch customer name

- Add debounced handleOrderNoInput method to fetch customer name based on order number
- Integrate getCustomerName API endpoint to retrieve customer information
- Update customer name field to display fetched value or placeholder text
- Add customer_name validation in form submission to ensure valid order number
- Replace standalone request import with debounce from lodash for input optimization
- Update API submission to use instance method instead of standalone function
- Remove unnecessary catch block from form submission promise chain
- Improves user experience by automatically populating customer name when valid order number is entered

pages/apply/index.vue

@@ -7,11 +7,11 @@
                     <u-icon slot="right" name="arrow-down" color="#c0c4cc"></u-icon>
                 </u-form-item>
                 <u-form-item label="订单号" prop="order_no" required borderBottom>
-                    <u--input v-model="form.order_no" placeholder="请输入" border="none" inputAlign="right"></u--input>
+                    <u--input v-model="form.order_no" placeholder="请输入" border="none" inputAlign="right" @input="handleOrderNoInput"></u--input>
                 </u-form-item>
                 <u-form-item label="客户名称" prop="customer_name" required>
                     <view class="row verCenter boxFlex" style="justify-content: flex-end;">
-                        <text class="link-text">关联订单号显示</text>
+                        <text class="link-text">{{ form.customer_name || '关联订单号显示' }}</text>
                     </view>
                 </u-form-item>
             </view>
@@ -55,7 +55,7 @@
 
 <script>
     import { API } from '@/util/api.js';
-    import { request } from '@/util/util.js';
+    import debounce from 'lodash/debounce';
 
     export default {
         data() {
@@ -102,11 +102,36 @@
             },
 
             /**
+             * 订单号输入事件，防抖获取客户名称
+             * @return {void}
+             */
+            handleOrderNoInput: debounce(function() {
+                var orderNo = this.form.order_no.trim();
+                
+                if (!orderNo) {
+                    this.form.customer_name = '';
+                    return;
+                }
+                
+                this.request(API.getCustomerName, 'GET', { order_sn: orderNo }).then(res => {
+                    if (res.code === 0) {
+                        this.form.customer_name = res.data;
+                    } else {
+                        this.form.customer_name = '';
+                        uni.showToast({
+                            title: res.msg || '获取客户名称失败',
+                            icon: 'none'
+                        });
+                    }
+                });
+            }, 500),
+
+            /**
              * 表单校验
              * @return {boolean} 校验是否通过
              */
             validateForm() {
-                var { apply_type, order_no, apply_fee_amount, relief_detail, relief_reason } = this.form;
+                var { apply_type, order_no, customer_name, apply_fee_amount, relief_detail, relief_reason } = this.form;
                 
                 if (!apply_type) {
                     this.errorMsg = '请选择申请类型';
@@ -118,6 +143,11 @@
                     return false;
                 }
                 
+                if (!customer_name) {
+                    this.errorMsg = '请输入有效的订单号以获取客户名称';
+                    return false;
+                }
+                
                 if (!apply_fee_amount) {
                     this.errorMsg = '请输入申请免收金额';
                     return false;
@@ -146,7 +176,7 @@
                     return;
                 }
                 
-                request(API.addFeeApprove, 'POST', this.form, true).then(res => {
+                this.request(API.addFeeApprove, 'POST', this.form, true).then(res => {
                     if (res.code === 0) {
                         uni.showToast({
                             title: '提交成功',
@@ -159,8 +189,6 @@
                     } else {
                         this.errorMsg = res.msg || '提交失败';
                     }
-                }).catch(() => {
-                    this.errorMsg = '网络异常，请稍后重试';
                 });
             }
         }

util/api.js

@@ -50,7 +50,11 @@ const API = {
   /**
    * 新增费用减免申请
    */
-  addFeeApprove: API_BASE + '/api/approve/addFeeApprove'
+  addFeeApprove: API_BASE + '/api/approve/addFeeApprove',
+  /**
+   * 根据订单号获取客户名称
+   */
+  getCustomerName: API_BASE + '/ajax/customerNameOption'
 }