包装类型为1时无法修改

src/views/ecw/channel/edit.vue

@@ -112,7 +112,7 @@
                 </el-col>
                 <el-col :span="16">
                   <packaging-type v-if="form.channelPackagingList.length" v-model="form.channelPackagingList[index]">
-                    <el-button @click="deleteFn(index)" type="danger">删除包装类型{{index + 1}}</el-button>
+                    <el-button :disabled="form.channelPackagingList.length === 1" @click="deleteFn(index)" type="danger">删除包装类型{{index + 1}}</el-button>
                   </packaging-type>
                 </el-col>
               </el-row>