1. 为CRUD.operation注入curd，免去属性传递 2. 表格界面零配置实现“表格列过滤显示”功能，弃用v-if方式 (#59)

⚡ CRUD优化
为CRUD.operation注入curd，免去属性传递
表格界面零配置实现“表格列过滤显示”功能，弃用v-if方式

src/views/mnt/server/index.vue

@@ -16,7 +16,7 @@
           start-placeholder="开始日期"
           end-placeholder="结束日期"
         />
-        <rrOperation :crud="crud" />
+        <rrOperation />
       </div>
       <crudOperation :permission="permission" />
     </div>
@@ -48,11 +48,11 @@
     <!--表格渲染-->
     <el-table ref="table" v-loading="crud.loading" :data="crud.data" style="width: 100%" @selection-change="crud.selectionChangeHandler">
       <el-table-column type="selection" width="55" />
-      <el-table-column v-if="columns.visible('name')" prop="name" label="名称" />
-      <el-table-column v-if="columns.visible('ip')" prop="ip" label="IP" />
-      <el-table-column v-if="columns.visible('port')" prop="port" label="端口" />
-      <el-table-column v-if="columns.visible('account')" prop="account" label="账号" />
-      <el-table-column v-if="columns.visible('createTime')" prop="createTime" label="创建日期">
+      <el-table-column prop="name" label="名称" />
+      <el-table-column prop="ip" label="IP" />
+      <el-table-column prop="port" label="端口" />
+      <el-table-column prop="account" label="账号" />
+      <el-table-column prop="createTime" label="创建日期">
         <template slot-scope="scope">
           <span>{{ parseTime(scope.row.createTime) }}</span>
         </template>