Laravel 简单实现Ajax滚动加载示例

更新时间：2020-04-12 08:14:44 作者：startmvc

开发H5项目的时候我们总是需要用到下拉滚动刷新的方式加载页面。这里用Laravel实现一下，

开发H5项目的时候我们总是需要用到下拉滚动刷新的方式加载页面。这里用 Laravel 实现一下，直接上代码：

创建模型

这里我们不妨创建一个文章（Post）模型，并且生成测试数据 50 条吧。


php artisan make:model -m

模型Post.php


namespace App;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{

 public $fillable = ['title','description'];

 
}

迁移文件


use Illuminate\Database\Schema\Blueprint;
use Illuminate\Database\Migrations\Migration;

class CreatePostTable extends Migration
{
 /**
 * Run the migrations.
 *
 * @return void
 */
 public function up()
 {
 Schema::create('posts', function (Blueprint $table) {
 $table->increments('id');
 $table->string('title');
 $table->text('description');
 $table->timestamps();
 });
 }

 /**
 * Reverse the migrations.
 *
 * @return void
 */
 public function down()
 {
 Schema::drop("posts");
 }
}

测试数据 ModelFactory.php


$factory->define(App\Post::class, function (Faker\Generator $faker) {
 return [
 'title' => $faker->sentence,
 'description' => $faker->paragraph,
 ];
});

填充


<?php

use Illuminate\Database\Seeder;

class DatabaseSeeder extends Seeder
{
 /**
 * Run the database seeds.
 *
 * @return void
 */
 public function run()
 {
 // $this->call(UsersTableSeeder::class);
 factory(App\Post::class, 50)->create();
 }
}

路由


Route::get('my-post', 'PostController@myPost');

控制器


namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Http\Requests;
use App\Post;

class PostController extends Controller
{

 public function myPost(Request $request)
 {
 $posts = Post::paginate(6); 

 if ($request->ajax()) {
 $view = view('data',compact('posts'))->render();
 return response()->json(['html'=>$view]);
 }

 return view('my-post',compact('posts'));
 }

}

视图文件 resources/view/my-post.php


<!DOCTYPE html>
<html>
<head>
 <title>Laravel 分页滚动加载</title>
 <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>
 <link href="http://libs.baidu.com/bootstrap/3.0.3/css/bootstrap.min.css" rel="external nofollow" rel="stylesheet">
 <style type="text/css">
 .ajax-load{
 background: #e1e1e1;
 padding: 10px 0px;
 width: 100%;
 }
 </style>
</head>
<body>

<div class="container">
 <h2 class="text-center">Laravel 分页滚动加载</h2>
 <br/>
 <div class="col-md-12" id="post-data">
 @include('data')
 </div>
</div>

<div class="ajax-load text-center" style="display:none">
 <p>![](./loader.gif)加载更多……</p>
</div>

<script type="text/javascript">
 var page = 1;
 $(window).scroll(function() {
 if($(window).scrollTop() + $(window).height() + 1>= $(document).height()) {
 page++;
 loadMoreData(page);
 }
 });

 function loadMoreData(page){
 $.ajax(
 {
 url: '?page=' + page,
 type: "get",
 beforeSend: function()
 {
 $('.ajax-load').show();
 }
 })
 .done(function(data)
 {
 //console.log(data.html);
 if(data.html == " "){
 $('.ajax-load').html("没有数据了……");
 return;
 }
 $('.ajax-load').hide();
 $("#post-data").append(data.html);
 })
 .fail(function(jqXHR, ajaxOptions, thrownError)
 {
 alert('服务未响应……');
 });
 }
</script>

</body>
</html>

resources/view/data.php


@foreach($posts as $post)
<div>
 <h3><a href="">{{ $post->title }}</a></h3>
 <p>{{ str_limit($post->description, 400) }}</p>

 <div class="text-right">
 <button class="btn btn-success">Read More</button>
 </div>

 <hr style="margin-top:5px;">
</div>
@endforeach

效果：