perf[complex-table]:refine code (#2825)

* 解决无法删除列表的bug;优化代码；

* perf: refine

Co-authored-by: 花裤衩 <panfree23@gmail.com>

mock/article.js

@@ -18,7 +18,7 @@ for (let i = 0; i < count; i++) {
     forecast: '@float(0, 100, 2, 2)',
     importance: '@integer(1, 3)',
     'type|1': ['CN', 'US', 'JP', 'EU'],
-    'status|1': ['published', 'draft', 'deleted'],
+    'status|1': ['published', 'draft'],
     display_time: '@datetime',
     comment_disabled: true,
     pageviews: '@integer(300, 5000)',

src/views/table/complex-table.vue

@@ -80,7 +80,7 @@
         </template>
       </el-table-column>
       <el-table-column label="Actions" align="center" width="230" class-name="small-padding fixed-width">
-        <template slot-scope="{row}">
+        <template slot-scope="{row,$index}">
           <el-button type="primary" size="mini" @click="handleUpdate(row)">
             Edit
           </el-button>
@@ -90,7 +90,7 @@
           <el-button v-if="row.status!='draft'" size="mini" @click="handleModifyStatus(row,'draft')">
             Draft
           </el-button>
-          <el-button v-if="row.status!='deleted'" size="mini" type="danger" @click="handleModifyStatus(row,'deleted')">
+          <el-button v-if="row.status!='deleted'" size="mini" type="danger" @click="handleDelete(row,$index)">
             Delete
           </el-button>
         </template>
@@ -319,13 +319,8 @@ export default {
           const tempData = Object.assign({}, this.temp)
           tempData.timestamp = +new Date(tempData.timestamp) // change Thu Nov 30 2017 16:41:05 GMT+0800 (CST) to 1512031311464
           updateArticle(tempData).then(() => {
-            for (const v of this.list) {
-              if (v.id === this.temp.id) {
-                const index = this.list.indexOf(v)
-                this.list.splice(index, 1, this.temp)
-                break
-              }
-            }
+            const index = this.list.findIndex(v => v.id === this.temp.id)
+            this.list.splice(index, 1, this.temp)
             this.dialogFormVisible = false
             this.$notify({
               title: 'Success',
@@ -337,14 +332,13 @@ export default {
         }
       })
     },
-    handleDelete(row) {
+    handleDelete(row, index) {
       this.$notify({
         title: 'Success',
         message: 'Delete Successfully',
         type: 'success',
         duration: 2000
       })
-      const index = this.list.indexOf(row)
       this.list.splice(index, 1)
     },
     handleFetchPv(pv) {
@@ -358,7 +352,7 @@ export default {
       import('@/vendor/Export2Excel').then(excel => {
         const tHeader = ['timestamp', 'title', 'type', 'importance', 'status']
         const filterVal = ['timestamp', 'title', 'type', 'importance', 'status']
-        const data = this.formatJson(filterVal, this.list)
+        const data = this.formatJson(filterVal)
         excel.export_json_to_excel({
           header: tHeader,
           data,
@@ -367,8 +361,8 @@ export default {
         this.downloadLoading = false
       })
     },
-    formatJson(filterVal, jsonData) {
-      return jsonData.map(v => filterVal.map(j => {
+    formatJson(filterVal) {
+      return this.list.map(v => filterVal.map(j => {
         if (j === 'timestamp') {
           return parseTime(v[j])
         } else {
@@ -378,11 +372,7 @@ export default {
     },
     getSortClass: function(key) {
       const sort = this.listQuery.sort
-      return sort === `+${key}`
-        ? 'ascending'
-        : sort === `-${key}`
-          ? 'descending'
-          : ''
+      return sort === `+${key}` ? 'ascending' : 'descending'
     }
   }
 }