udpate: 兼容channelTip为null

src/views/card/form.js

@@ -589,7 +589,7 @@ export default {
           this.storeMode = card.storeMode === 0 ? 0 : 1;
           this.gicCouponType = card.gicCouponType;
           this.form.cardApplyChannel = card.cardApplyChannel ? card.cardApplyChannel.split(',') : [];
-          this.form.channelTip = card.channelTip;
+          this.form.channelTip = card.channelTip == null ? '' : card.channelTip;
           this.form.auditingStatus = card.auditingStatus || '';
           this.form.giveFlag = card.giveFlag;
           this.form.refundFlag = card.refundFlag || 0;
@@ -966,7 +966,7 @@ export default {
 
       let card = {};
       let params = {};
-      card.channelTip = this.form.channelTip.slice(0, 18); // 有超过18字长的老数据
+      card.channelTip = this.form.channelTip ? this.form.channelTip.slice(0, 18) : ''; // 有超过18字长的老数据
       card.cardApplyChannel = this.form.cardApplyChannel.join(',');
       card.coupCardId = this.form.coupCardId;
       card.cardType = this.form.cardType;