编辑线路价格得包装类型转换bug修复

src/views/ecw/productPrice/edit.vue

@@ -637,7 +637,7 @@ export default {
         if (this.form.freightPricePackagingList?.length) {
           this.form.freightPricePackagingList.forEach((item) => {
             if (!item.packagingTypes) {
-              this.$set(item, "packagingTypes", []);
+              this.$set(item, "packagingTypes", "");
             } else if (typeof item.packagingTypes == "string") {
               item.packagingTypes = item.packagingTypes.split(",");
             }
@@ -874,7 +874,11 @@ export default {
       return packging
         .filter((item) => !!item.packagingTypes)
         .map((item) => {
+          if (item.packagingTypes.length === 0){
+            item.packagingTypes = "";
+          } else {
             item.packagingTypes = item.packagingTypes?.join(",") || "";
+          }
           return item;
         });
     },