[英]iterate nested children and display data using vuejs and javascript
我有帶有嵌套子級的 treeview 文件夾結構。 有一些文件對象嵌套在子項中。 我想使用 vue 和 javascript 根據節點顯示這些文件的詳細信息。 這是模擬的數據:
data:[{
id: 1,
name: ‘Project A’,
type: ‘folder’,
children: [{
id: 4,
name: 'Project A-1’,
type: ‘folder’,
files: [
{
id: 9,
pid: 4,
name: ‘file 3-A’,
type:’file’,
description: ‘wifi’,
country: ‘USA'
},
{
id: 10,
pid: 4,
name: ‘file 3-B’,
type:’file’,
description: ‘VPN’,
country: ‘USA'
}
]
}
]
},
{
id: 2,
name: 'Services’,
type: 'folder',
children:[],
files: [
{
id: 5,
name: ‘Services-1-A’,
type:’file’,
pid: 2,
description: ‘VPN’,
country: ‘AUS'
},
{
id: 6,
name: ‘Services-1-B’,
type:’file’,
pid: 2,
description: ‘WIFI’,
country: ‘AUS'
}
]
},
{
id: 3,
name: 'Servers',
type: 'folder’,
children:[],
files: [
{
id: 7,
name: ‘Servers-1-A’,
type: ‘file’,
pid: 3,
description: ‘VPN’,
country: ‘CAD'
},
{
id: 8,
name: ‘Servers-1-B',
type: ‘file’,
pid: 3,
description: ‘WIFI’,
country: ‘CAD'
}
]
}]
用戶界面代碼:
<el-row style="background: #f2f2f2">
<el-col :span="6">
<div class="folder-content">
<el-tree
node-key="id"
:data="data"
accordion
@node-click="nodeclicked"
ref="tree"
style="background: #f2f2f2"
highlight-current
>
<span class="custom-tree-node" slot-scope="{ node, data }">
<span class="icon-folder" v-if="data.type === 'folder'">
<i class="el-icon-folder" aria-hidden="true"></i>
<span class="icon-folder_text" @click="showFiles(node.id) >{{ data.name }}</span>
</span>
</span>
</el-tree>
</div>
</el-col>
<el-col :span="12"><div class="entry-content">
<ul>
<li aria-expanded="false" v-for="(file,index) in files" :key="index">
<span class="folder__list"><input type="checkbox" :id= "file" :value="file">
<i class="el-icon-document" aria-hidden="true"></i>
<span class="folder__name">{{file.name}}</span></span>
</li>
</ul>
</div></el-col>
<el-col :span="6"><div class="preview_content"></div></el-col>
</el-row>
方法:
showFiles(id) {
let f = this.data.filter(dataObject => {
if (dataObject.children && dataObject.children.id === id) {
return false
} else if (!dataObject.children && dataObject.id === id) {
return false
}
return true
})[1]
this.files = f.files
console.log(this.files)
}
如果遍歷深層孩子,我想獲取這些文件詳細信息。 如果我單擊子文件夾“Project A-1”,那么我想在該子文件夾中顯示這些文件。 我試圖過濾掉,但它只顯示根文件夾文件(如果有的話)。 我無法在子級中顯示嵌套文件。
我正在使用原型而不是文件獲取整個節點詳細信息
如何迭代這些並顯示?
我相信這就是您正在尋找的。 我在代碼中寫了注釋來解釋我的思考過程。
showFiles(id) { for (const dataObject of this.data) { if (this.dataObject.children && this.dataObject.children.id === id) { // check if file has children and if the child id is the same as the id. If it is, the files are the files of the nested child this.files = this.dataObject.children.files; break; } if (.this.dataObject.children && this.dataObject,id === id) { // if the data object does not have children and the id is the same as the id being looked for. the file is the root folder this.files = this.dataObject;files; break; } } }
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