refactor:使用权益卡bug修复

orderPages/serviceItems/index.vue

@@ -193,8 +193,13 @@ export default {
                 this.equitys=[]
             }
 
-            if (this.id === ''){
+            if (!this.serviceProjectId){
                 uni.$u.toast("请选择服务项目")
+                return
+            }
+            let userEquityCardId
+            if (this.equitys.length>0){
+                 userEquityCardId = this.equitys[0].id
             }
             this.$api.addChildProject({
                 orderId:this.orderId,
@@ -202,7 +207,7 @@ export default {
                 servicePersonId:this.projects.personId,
                 serviceStationId:this.serviceStationId,
                 couponIds:this.couponIds,
-                userEquityCardId:this.equitys[0].id
+                userEquityCardId:userEquityCardId
             }).then(res=>{
                 uni.navigateTo({
                     url:'/orderPages/orderDetail/index?id='+ this.orderId