您的位置:首页 > Web前端 > JQuery

Laravel5中基于jQuery实现分层级的类目树结构方法

2016-11-23 09:27 411 查看
Laravel5中基于jQuery实现分层级的类目树结构方法
下面时间财富网小编们来了解一下关于Laravel 5 中基于 jQuery 实现分层级的类目树结构方法,希望这一篇教程能够给各位带来帮助,具体的步骤细节如下文介绍。
今天,时间财富网小编要来分享下如何在Laravel 5中通过jQuery实现动态类目树结构:有些时候时间财富网小编们确实需要为类目及其子类目生成树结构以便于使用。
在本教程中,时间财富网小编只是简单在Laravel应用中创建一个“categories”表并通过一个嵌套的树结构来管理父类目和子类目。时间财富网小编使用jQuery来生成树视图布局,使用类目模型为层级数据设置关联关系,还为在类目树中创建新类目添加了表单。
在正式开始之前,先贴上最终效果图:
laravel-category-tree-view
下面正式开始开发之路。
第一步:安装Laravel 5.3应用
如果你还没有安装Laravel 5.3的话,那么第一步肯定是安装它。时间财富网小编们使用Composer进行安装:
composer create-project --prefer-dist laravel/laravel blog
如果没有Homestead之类的开发环境的话,需要在.env文件中配置数据库连接信息。
第二步:创建类目表和模型
在这一步中时间财富网小编们使用Laravel提供的Artisan命令为类目表生成迁移文件:
php artisan make:migration create_category_table
运行完该命令之后你会发现在database/migrations目录下新生成了一个迁移文件,编辑该文件代码如下:
use Illuminate\Support\Facades\Schema;
use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;
class CreateCategoryTable extends Migration
{
/**
* Run the migrations.
*
* @return void
*/
public function up()
{
Schema::create('categories', function (Blueprint $table) {
$table->increments('id');
$table->string('title');
$table->integer('parent_id');
$table->timestamps();
});
}
/**
* Reverse the migrations.
*
* @return void
*/
public function down()
{
Schema::drop("categories");
}
}
然后时间财富网小编们运行如下命令生成该表:
php artisan migrate
创建完数据表之后还需要创建一个与该数据表相对应的模型类app/Category.php:
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Category extends Model
{
public $fillable = ['title','parent_id'];
/**
* Get the index name for the model.
*
* @return string
*/
public function childs() {
return $this->hasMany('App\Category','parent_id','id') ;
}
}
第三步:创建路由
在这一步中时间财富网小编们需要创建两个路由,一个用于渲染类目树视图,一个用于添加新的类目。打开routes/web.php文件,添加如下两个路由:
Route::get('category-tree-view',['uses'=>'CategoryController@manageCategory']);
Route::post('add-category',['as'=>'add.category','uses'=>'CategoryController@addCategory']);
第四步:创建控制器
到了这里,时间财富网小编们需要创建路由中定义的控制器app/Http/Controllers/CategoryController.php,编写该文件代码如下:
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Http\Requests;
use App\Category;
class CategoryController extends Controller
{
/**
* Show the application dashboard.
*
* @return \Illuminate\Http\Response
*/
public function manageCategory()
{
$categories = Category::where('parent_id', '=', 0)->get();
$allCategories = Category::pluck('title','id')->all();
return view('categoryTreeview',compact('categories','allCategories'));
}
/**
* Show the application dashboard.
*
* @return \Illuminate\Http\Response
*/
public function addCategory(Request $request)
{
$this->validate($request, [
'title' => 'required',
]);
$input = $request->all();
$input['parent_id'] = empty($input['parent_id']) ? 0 : $input['parent_id'];
Category::create($input);
return back()->with('success', 'New Category added successfully.');
}
}
第五步:创建视图
在这一步中,时间财富网小编们来创建两个Blade视图文件。首先是resources/views/categoryTreeview.blade.php:
<!DOCTYPE html>
<html>
<head>
<title>Laravel Category Treeview Example</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css" />
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<link href="/css/treeview.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div class="panel panel-primary">
<div class="panel-heading">Manage Category TreeView</div>
<div class="panel-body">
<div class="row">
<div class="col-md-6">
<h3>Category List</h3>
<ul id="tree1">
@foreach($categories as $category)
<li>
{{ $category->title }}
@if(count($category->childs))
@include('manageChild',['childs' => $category->childs])
@endif
</li>
@endforeach
</ul>
</div>
<div class="col-md-6">
<h3>Add New Category</h3>
{!! Form::open(['route'=>'add.category']) !!}
@if ($message = Session::get('success'))
<div class="alert alert-success alert-block">
<button type="button" class="close" data-dismiss="alert">×</button>
<strong>{{ $message }}</strong>
</div>
@endif
<div class="form-group {{ $errors->has('title') ? 'has-error' : '' }}">
{!! Form::label('Title:') !!}
{!! Form::text('title', old('title'), ['class'=>'form-control', 'placeholder'=>'Enter Title']) !!}
<span class="text-danger">{{ $errors->first('title') }}</span>
</div>
<div class="form-group {{ $errors->has('parent_id') ? 'has-error' : '' }}">
{!! Form::label('Category:') !!}
{!! Form::select('parent_id',$allCategories, old('parent_id'), ['class'=>'form-control', 'placeholder'=>'Select Category']) !!}
<span class="text-danger">{{ $errors->first('parent_id') }}</span>
</div>
<div class="form-group">
<button class="btn btn-success">Add New</button>
</div>
{!! Form::close() !!}
</div>
</div>
</div>
</div>
</div>
<script src="/js/treeview.js"></script>
</body>
</html>
然后是resources/views/manageChild.blade.php:
<ul>
@foreach($childs as $child)
<li>
{{ $child->title }}
@if(count($child->childs))
@include('manageChild',['childs' => $child->childs])
@endif
</li>
@endforeach
</ul>
第六步:添加CSS和JS文件
最后一步,时间财富网小编们来添加视图文件所需要的CSS和JS文件。
public/css/treeview.css:
.tree, .tree ul {
margin:0;
padding:0;
list-style:none
}
.tree ul {
margin-left:1em;
position:relative
}
.tree ul ul {
margin-left:.5em
}
.tree ul:before {
content:"";
display:block;
width:0;
position:absolute;
top:0;
bottom:0;
left:0;
border-left:1px solid
}
.tree li {
margin:0;
padding:0 1em;
line-height:2em;
color:#369;
font-weight:700;
position:relative
}
.tree ul li:before {
content:"";
display:block;
width:10px;
height:0;
border-top:1px solid;
margin-top:-1px;
position:absolute;
top:1em;
left:0
}
.tree ul li:last-child:before {
background:#fff;
height:auto;
top:1em;
bottom:0
}
.indicator {
margin-right:5px;
}
.tree li a {
text-decoration: none;
color:#369;
}
.tree li button, .tree li button:active, .tree li button:focus {
text-decoration: none;
color:#369;
border:none;
background:transparent;
margin:0px 0px 0px 0px;
padding:0px 0px 0px 0px;
outline: 0;
}
public/js/treeview.js:
$.fn.extend({
treed: function (o) {
var openedClass = 'glyphicon-minus-sign';
var closedClass = 'glyphicon-plus-sign';
if (typeof o != 'undefined'){
if (typeof o.openedClass != 'undefined'){
openedClass = o.openedClass;
}
if (typeof o.closedClass != 'undefined'){
closedClass = o.closedClass;
}
};
/* initialize each of the top levels */
var tree = $(this);
tree.addClass("tree");
tree.find('li').has("ul").each(function () {
var branch = $(this);
branch.prepend("");
branch.addClass('branch');
branch.on('click', function (e) {
if (this == e.target) {
var icon = $(this).children('i:first');
icon.toggleClass(openedClass + " " + closedClass);
$(this).children().children().toggle();
}
})
branch.children().children().toggle();
});
/* fire event from the dynamically added icon */
tree.find('.branch .indicator').each(function(){
$(this).on('click', function () {
$(this).closest('li').click();
});
});
/* fire event to open branch if the li contains an anchor instead of text */
tree.find('.branch>a').each(function () {
$(this).on('click', function (e) {
$(this).closest('li').click();
e.preventDefault();
});
});
/* fire event to open branch if the li contains a button instead of text */
tree.find('.branch>button').each(function () {
$(this).on('click', function (e) {
$(this).closest('li').click();
e.preventDefault();
});
});
}
});
/* 初始化树状图 */
$('#tree1').treed();
好了,至此所有代码已经编写完成,你可以在浏览器中查看效果了。
如果大家需要看更多关于PHP编程方面的资讯可以关注时间财富网
内容来自用户分享和网络整理,不保证内容的准确性,如有侵权内容,可联系管理员处理 点击这里给我发消息
标签: