提交签约主体label默认显示

src/views/order/components/details.vue

@@ -1023,8 +1023,8 @@
                         <span>
                             <p>红冲类型：</p>{{ item.redType }}
                         </span>
-                        <span v-if="item.signingSubject">
-                            <p>签约主体：</p>{{ item.signingSubject }}
+                        <span >
+                            <p>签约主体：</p>{{ item.signingSubject || '--'}}
                         </span>
                         <span v-if="item.redType.indexOf('签约主体') > -1 && orDetails.product_type === '大会员'">
                             <p>合同金额变动</p>{{ priceProcessing(item.payMoney, item.bigSubMoney, item.supplyMoney) }}