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>
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