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[PHP] Laravel 简单实现Ajax滚动加载示例

开发技术 开发技术 发布于:2021-09-13 22:50 | 阅读数:315 | 评论:0

今天小编就为大家分享一篇Laravel 简单实现Ajax滚动加载示例,具有很好的参考价值,希望对大家有所帮助。一起跟随小编过来看看吧
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">
 <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>
</div>
@endforeach
效果:
DSC0000.jpg

以上这篇Laravel 简单实现Ajax滚动加载示例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持CodeAE代码之家
原文链接:https://www.jianshu.com/p/1f6459d0946f

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