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/system/dept/index.vue

@@ -19,7 +19,7 @@
         <el-select v-model="query.enabled" clearable size="small" placeholder="状态" class="filter-item" style="width: 90px" @change="crud.toQuery">
           <el-option v-for="item in enabledTypeOptions" :key="item.key" :label="item.display_name" :value="item.key" />
         </el-select>
-        <rrOperation :crud="crud" />
+        <rrOperation />
       </div>
       <crudOperation :permission="permission" />
     </div>
@@ -44,8 +44,8 @@
     <!--表格渲染-->
     <el-table ref="table" v-loading="crud.loading" :tree-props="{children: 'children', hasChildren: 'hasChildren'}" default-expand-all :data="crud.data" row-key="id" @select="crud.selectChange" @select-all="crud.selectAllChange" @selection-change="crud.selectionChangeHandler">
       <el-table-column :selectable="checkboxT" type="selection" width="55" />
-      <el-table-column v-if="columns.visible('name')" label="名称" prop="name" />
-      <el-table-column v-if="columns.visible('enabled')" label="状态" align="center" prop="enabled">
+      <el-table-column label="名称" prop="name" />
+      <el-table-column label="状态" align="center" prop="enabled">
         <template slot-scope="scope">
           <el-switch
             v-model="scope.row.enabled"
@@ -56,7 +56,7 @@
           />
         </template>
       </el-table-column>
-      <el-table-column v-if="columns.visible('createTime')" prop="createTime" label="创建日期">
+      <el-table-column prop="createTime" label="创建日期">
         <template slot-scope="scope">
           <span>{{ parseTime(scope.row.createTime) }}</span>
         </template>