From d84a17688d3717a649dabf72e5e2213d0887f2db Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E8=8A=B1=E8=A3=A4=E8=A1=A9?= <panfree23@gmail.com>
Date: Wed, 16 Jan 2019 10:18:32 +0800
Subject: [PATCH] fix[DndList]: fixed drag bug (#1527)

https://github.com/PanJiaChen/vue-element-admin/issues/1524
---
 src/components/DndList/index.vue | 29 ++++++++++++++---------------
 1 file changed, 14 insertions(+), 15 deletions(-)

diff --git a/src/components/DndList/index.vue b/src/components/DndList/index.vue
index 43e0bb2894b..7587daa77b1 100644
--- a/src/components/DndList/index.vue
+++ b/src/components/DndList/index.vue
@@ -4,7 +4,7 @@
       <h3>{{ list1Title }}</h3>
       <draggable :list="list1" :options="{group:'article'}" class="dragArea">
         <div v-for="element in list1" :key="element.id" class="list-complete-item">
-          <div class="list-complete-item-handle">[{{ element.author }}] {{ element.title }}</div>
+          <div class="list-complete-item-handle">{{ element.id }}[{{ element.author }}] {{ element.title }}</div>
           <div style="position:absolute;right:0px;">
             <span style="float: right ;margin-top: -20px;margin-right:5px;" @click="deleteEle(element)">
               <i style="color:#ff4949" class="el-icon-delete"/>
@@ -15,9 +15,9 @@
     </div>
     <div :style="{width:width2}" class="dndList-list">
       <h3>{{ list2Title }}</h3>
-      <draggable :list="filterList2" :options="{group:'article'}" class="dragArea">
-        <div v-for="element in filterList2" :key="element.id" class="list-complete-item">
-          <div class="list-complete-item-handle2" @click="pushEle(element)"> [{{ element.author }}] {{ element.title }}</div>
+      <draggable :list="list2" :options="{group:'article'}" class="dragArea">
+        <div v-for="element in list2" :key="element.id" class="list-complete-item">
+          <div class="list-complete-item-handle2" @click="pushEle(element)">{{ element.id }} [{{ element.author }}] {{ element.title }}</div>
         </div>
       </draggable>
     </div>
@@ -60,16 +60,6 @@ export default {
       default: '48%'
     }
   },
-  computed: {
-    filterList2() {
-      return this.list2.filter(v => {
-        if (this.isNotInList1(v)) {
-          return v
-        }
-        return false
-      })
-    }
-  },
   methods: {
     isNotInList1(v) {
       return this.list1.every(k => v.id !== k.id)
@@ -90,7 +80,16 @@ export default {
       }
     },
     pushEle(ele) {
-      this.list1.push(ele)
+      for (const item of this.list2) {
+        if (item.id === ele.id) {
+          const index = this.list2.indexOf(item)
+          this.list2.splice(index, 1)
+          break
+        }
+      }
+      if (this.isNotInList1(ele)) {
+        this.list1.push(ele)
+      }
     }
   }
 }