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laravel--通用后台管理系统--分页--图片上传
王娇
Original
1293 people have browsed it

学习总结

1.文章列表的分页，前端使用layui中的laypage进行渲染，后端使用laravel中的paginate(每页显示的记录个数)方法实现文章列表的分页

2.在DBServiceProvider.php中把paginate()进行扩展，扩展后的方法名称为pages()以数组的形式返回所查询到的数据，并且返回数据记录的总数

3.文件上传使用layui的Upload进行文件上传操作，上传的文件通过Upload控制器中的upload_img方法进行存储，并且返回可访问的地址。

4.默认upload上传的图片存储在storage目录中，需要使用artisan命令在public目录下建立软链接才可以访问到存储的图片php artisan storage:link在public目录下创建storage目录的软链接相当于快捷方式。

5.上传的文件应当存储在storage目录下的public目录下

6.渲染保存在数据库的富文本编辑器中的内容 应该使用{!! $detail['contents'] !!}

1.文章控制器Article.php

  2. <?php
  4. namespace App\Http\Controllers\admins;
  6. use App\Http\Controllers\Controller;
  8. //登录验证
  9. use Illuminate\Support\Facades\Auth;
  11. use Illuminate\Http\Request;
  12. //引入数据库查询构造器，链式调用
  13. use Illuminate\Support\Facades\DB;
  14. //后台文章管理控制器
  15. class Article extends Controller
  16. {
  17.     //显示文章列表
  18.     public function index(Request $req)
  19.     {
  20.         $res['page'] =(int)$req->page;//当前显示的是第几页
  21.         $limit = 8;//每页显示的记录数
  22.         $pageInfo = DB::table('article')->orderby('id','desc')->pages($limit);//pages()方法为自定义的分页方法
  23.         $res['articles'] = $pageInfo['data'];//得到分页数据
  24.         $res['total'] = $pageInfo['total'];//得到记录总数
  25.         $res['limit'] = $limit;//得到每页显示多少条记录
  26.         //$res['articles'] = DB::table('article')->paginate(1);
  27.         // $res['articles'] = DB::table('article')->lists();
  28.         $res['cates'] = DB::table('article_cate')->cate('id');
  29.         $res['auths'] = DB::table('admin')->select('id','real_name')->cate('id');
  30.         // echo '<pre>';
  31.         // print_r($res);
  32.         // exit;
  33.         return view('/admins/article/index',$res);
  34.     }
  35. //添加修改文章
  36.     public function add(Request $req)
  37.     {
  38.         //获取当前登录用户的id
  39.         $res['admin_id'] = Auth::user()->id;
  40.         //使用aid判断用户是添加文章=0，修改文章aid不为0
  41.         $res['aid'] = (int)$req->aid;
  42.         $res['article'] = DB::table('article')->where('id',$res['aid'])->item();
  43.          //把文章分类数据带入视图中
  44.          $res['cates'] = DB::table('article_cate')->lists();
  45.         //把文章作者数据带入视图中
  46.          $res['auths'] = DB::table('admin')->select('id','real_name')->lists();
  47.         //获取文章详情
  48.         $res['detail']= DB::table('article_detail')->where('aid',$res['aid'])->item();
  49.         //   echo '<pre>';
  50.         //  print_r($res);
  51.         //  exit;
  52.         return view('/admins/article/add',$res);
  53.     }
  55. //保存文章
  56.     public function save(Request $req)
  57.     {
  58.         $aid = (int)$req->aid;
  59.         $data['title'] = trim($req->title);
  60.         if($data['title']==''):
  61.             return (json_encode(['status'=>'1','msg'=>'文章标题不能为空']));
  62.         endif;
  63.         $data['cid'] =(int)$req->cid;
  64.         $data['auth_id'] =(int)$req->auth_id;
  65.         $data['subtitle'] = trim($req->subtitle);
  66.         $data['thumb'] = $req->thumb;
  67.         $data['keywords'] = trim($req->keywords);
  68.         $data['descs'] = trim($req->descs);
  69.         $data['status'] =(int)$req->status;
  70.         $content = $req->detail;
  71.         // echo '<pre>';
  72.         // print_r($data);
  73.         // exit;
  74.         if($aid==0):
  75.             $data['add_time'] =time();
  76.             $artIndex = DB::table('article')->insertGetId($data);//插入文章后获取文章id索引
  77.             if($artIndex>0):
  78.                 $res = DB::table('article_detail')->insert(['aid'=>$artIndex,'contents'=>$content]);//把文章详情插入文章内容表中
  79.             endif;
  80.         else:
  81.             $artIndex = DB::table('article')->where('id',$aid)->update($data);//修改文章
  82.             $res = DB::table('article_detail')->where('aid',$aid)->update(['contents'=>$content]);//更新文章内容表中的内容
  83.         endif;
  85.         return json_encode(['status'=>0,'msg'=>'保存成功']);
  86.     }
  88. //删除文章
  89.     public function del(Request $req)
  90.     {
  91.         $aid = $req->aid;
  92.         $res = DB::table('article')->where('id',$aid)->delete();
  93.         $res = DB::table('article_detail')->where('aid',$aid)->delete();
  94.         return json_encode(['status'=>0,'msg'=>'删除成功']);
  95.     }
  97.     public function cates()
  98.     {
  99.         return view('/admins/article/cates');
  100.     }
  101. }

2.显示文章列表，进行分页渲染index.blade.php

  2. <!DOCTYPE html>
  3. <html lang="en">
  5. <head>
  6.     <meta charset="UTF-8">
  7.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  8.     <link rel="stylesheet" href="/static/plugins/layui/css/layui.css">
  9.     <script src="/static/plugins/layui/layui.js"></script>
  10.     <title>文章管理</title>
  11. </head>
  12. <style>
  13. .addBtn {
  14.     margin-top: 10px;
  15.     width: 120px;
  16.     margin-left: auto;
  17.     margin-right: 50px;
  18. }
  20. .layui-table {
  21.     width: 95%;
  22.     margin: 20px;
  23. }
  24. </style>
  26. <body>
  27.     <div class="addBtn">
  28.         <button class="layui-btn" onclick="add()">添加文章</button>
  29.     </div>
  30.     <table class="layui-table">
  31.         <thead>
  32.             <tr>
  33.                 <th>编号</th>
  34.                 <th>文章分类</th>
  35.                 <th>标题</th>
  36.                 <th>封面图</th>
  37.                 <th>作者</th>
  38.                 <th>状态</th>
  39.                 <th>注册时间</th>
  40.                 <th>操作</th>
  41.             </tr>
  42.         </thead>
  43.         <tbody>
  45.             @foreach($articles as $article)
  46.             <tr>
  47.                 <td>{{$article['id']}}</td>
  48.                 <td>{{$cates[$article['cid']]['title']}}</td>
  49.                 <td>{{$article['title']}}</td>
  50.                 <td><img src="{{$article['thumb']}}" alt="" style="height:30px"></td>
  51.                 <td>{{$auths[$article['auth_id']]['real_name']}}</td>
  52.                 <td>{{$article['status']?'已发布':'草稿'}}</td>
  53.                 <td>{{$article['add_time']?date('Y-m-d',$article['add_time']):''}}</td>
  54.                 <td>
  55.                     <button class="layui-btn layui-btn-xs" onclick="add({{$article['id']}})">修改</button>
  56.                     <button class="layui-btn layui-btn-xs layui-btn-danger"
  57.                         onclick="del({{$article['id']}})">删除</button>
  58.                 </td>
  59.             </tr>
  60.             @endforeach
  61.         </tbody>
  62.     </table>
  63.     <div id="pageList" style="width:500px;margin-left: auto; margin-right:auto;"></div>
  64. </body>
  65. <script>
  66. layui.use(['layer', 'laypage'], function() {
  67.     layer = layui.layer;
  68.     $ = layui.jquery;
  69.     //创建分页
  70.     laypage = layui.laypage;
  71.     //渲染分页条
  72.     laypage.render({
  73.         elem: 'pageList',
  74.         count:{{$total}}, //数据记录总数
  75.         limit: {{$limit}}, //每页显示几条数据
  76.         curr:{{ $page }},//当前显示的是第几页的数据
  77.         groups: 5, //中间连续显示几个页码
  78.         layout:['prev','page','next','skip','count'],
  79.         // first: '首页',可以自定义首页，下一页，尾页，上一页的文件显示
  80.         // last: '尾页',
  81.         // prev: '上一页',
  82.         // next: '下一页',
  83.         jump: function(obj, first) {
  84.             //console.log(obj.curr);当前点击分页条的页码数
  85.             if (!first) {
  86.                 window.location.href="?page="+obj.curr;
  87.             }
  88.         }
  91.     });
  94. });
  96. //添加修改文章
  97. function add(aid) {
  98.     //iframe层
  99.     layer.open({
  100.         type: 2,
  101.         title: aid?'修改文章':'添加文章',
  102.         shadeClose: true,
  103.         shade: 0.8,
  104.         area: ['680px', '100%'],
  105.         content: '/admins/article/add?aid='+aid, //iframe的url
  106.         btn: ['保存'],
  107.         yes: function(index, layero) {
  108.             //得到iframe页的窗口对象，执行iframe页的方法：iframeWin.子页面的方法名称();
  109.             var iframeWin = window[layero.find('iframe')[0]['name']];;
  110.             iframeWin.save();
  111.         }
  113.     });
  114. }
  117. //删除文章
  118. function del(aid) {
  119.     layer.confirm('确认要删除文章吗？', function() {
  120.         $.get('/admins/article/del?aid=' + aid, function(res) {
  121.             if (res.status > 0) {
  122.                 layer.alert(res.msg, {
  123.                     icon: 2
  124.                 });
  125.             } else {
  126.                 layer.msg(res.msg, {
  127.                     time: 3000
  128.                 });
  129.                 window.location.reload();
  130.             }
  131.         }, 'json');
  132.     });
  135. }
  136. </script>
  138. </html>

3.添加或者修改文章add.blade.php

  2. <!DOCTYPE html>
  3. <html lang="en">
  5. <head>
  6.     <meta charset="UTF-8">
  7.     <meta name="viewport" content="width=device-width, initial-scale=1.0">
  8.     <link rel="stylesheet" href="/static/plugins/layui/css/layui.css">
  9.     <script src="/static/plugins/layui/layui.js"></script>
  10.     <!-- html文件编辑器配置文件 -->
  11.     <script src="/static/plugins/ueditor/ueditor.config.js"></script>
  12.     <!-- 编辑器源码文件 -->
  13.     <script src="/static/plugins/ueditor/ueditor.all.js"></script>
  14.     <title>添加文章</title>
  15.     <style>
  16.     .layui-form {
  17.         margin-top: 20px;
  18.         margin-right: 20px;
  19.     }
  20.     </style>
  21. </head>
  23. <body>
  24.     <form action="" class="layui-form">
  25.         @csrf
  26.         <input type="hidden" name="aid" id="" value="{{ $article['id']?$article['id']:0 }}">
  27.         <div class="layui-form-item">
  28.             <label for="" class="layui-form-label">标题</label>
  29.             <div class="layui-input-block">
  30.                 <input type="text" class="layui-input" name="title" value="{{ $article['title'] }}">
  31.             </div>
  32.         </div>
  34.         <div class="layui-form-item">
  35.             <label for="" class="layui-form-label">作者</label>
  36.             <div class="layui-input-block">
  37.                 <select name="auth_id" id="">
  38.                     <option value=""></option>
  39.                     @foreach ($auths as $auth )
  40.                         @if($aid>0)
  41.                             {{-- 修改文章时作者id为数据库中保存的作者id --}}
  42.                             <option value="{{ $auth['id'] }}" {{ $auth['id'] === $article['auth_id']?'selected':'' }}>{{ $auth['real_name'] }}</option>
  43.                         @else
  44.                             {{-- 添加文章时作者id为登录用户的id --}}
  45.                             <option value="{{ $auth['id'] }}" {{ $auth['id'] === $admin_id?'selected':'' }}>{{ $auth['real_name'] }}</option>
  46.                         @endif
  47.                     @endforeach
  48.                 </select>
  49.             </div>
  50.         </div>
  52.         <div class="layui-form-item">
  53.             <label for="" class="layui-form-label">文章分类</label>
  54.             <div class="layui-input-block">
  55.                 <select name="cid" id="">
  56.                     <option value=""></option>
  57.                     @foreach ($cates as $cate )
  58.                     <option value="{{ $cate['id'] }}" {{ $cate['id'] === $article['cid']?'selected':'' }}>{{ $cate['title'] }}</option>
  59.                     @endforeach
  60.                 </select>
  61.             </div>
  62.         </div>
  64.         <div class="layui-form-item">
  65.             <label for="" class="layui-form-label">封面图片</label>
  66.             <div class="layui-input-block">
  67.                 <img src="{{ $article['thumb'] }}" alt="" id="show_thumb" style="height: 30px;">
  68.                 <button type="button" class="layui-btn" id="thumb">
  69.                     <i class="layui-icon">&#xe67c;</i>上传图片
  70.                 </button>
  71.             </div>
  72.         </div>
  74.         <div class="layui-form-item">
  75.             <label for="" class="layui-form-label">副标题</label>
  76.             <div class="layui-input-block">
  77.                 <input type="text" class="layui-input" name="subtitle" value="{{ $article['subtitle'] }}">
  78.             </div>
  79.         </div>
  81.         <div class="layui-form-item">
  82.             <label for="" class="layui-form-label">关键词</label>
  83.             <div class="layui-input-block">
  84.                 <input type="text" class="layui-input" name="keywords" value="{{ $article['keywords'] }}">
  85.             </div>
  86.         </div>
  88.         <div class="layui-form-item">
  89.             <label for="" class="layui-form-label">描述</label>
  90.             <div class="layui-input-block">
  91.                 <textarea class="layui-textarea" name="descs">{{ $article['descs'] }}</textarea>
  92.             </div>
  93.         </div>
  95.         <div class="layui-form-item">
  96.             <label for="" class="layui-form-label">是否发布</label>
  97.             <div class="layui-input-block">
  98.                 <input type="checkbox" lay-skin="switch" name="status" lay-text="发布|草稿" {{ $article['status']?'checked':'' }}>
  99.             </div>
  100.         </div>
  102.         <!-- html文本编辑器 -->
  103.         <div class="layui-form-item" style="padding-left:10px">
  104.             <!-- 加载编辑器的容器 -->
  105.             {{-- {!! $detail['contents'] !!} 进行html解析 --}}
  106.             <script id="detail" name="detail" type="text/plain">{!! $detail['contents'] !!}</script>
  107.         </div>
  108.     </form>
  109. </body>
  111. <script>
  112. layui.use(['form', 'layer', 'upload'], function() {
  113.     var form = layui.form;
  114.     var layer = layui.layer;
  115.     $ = layui.jquery;
  117.     //<!-- 实例化编辑器 -->
  118.     //var ue = UE.getEditor('detail', {
  119.      ue = UE.getEditor('detail', {//副文本编辑器去掉var关键字，变成全局变量
  120.         initialFrameWidth: '100%', //设定ueditor的宽度
  121.         initialFrameHeight: '500' //设定ueditor的高度
  122.     });
  123.     var upload = layui.upload;
  124.     _token = $('input[name="_token"]').val();//_token也去掉var关键字，成为全局变量
  125.     //上传封面图片执行实例
  126.     var uploadInst = upload.render({
  127.         elem: '#thumb' //绑定元素
  128.             ,
  129.         url: '/admins/upload/upload_img' //上传接口
  130.             ,
  131.         data: {
  132.             _token: _token
  133.         },
  134.         done: function(res) {
  135.             //上传完毕回调
  136.             // console.log(res.data.src);
  137.             $('#show_thumb').attr('src', res.data.src);
  138.         },
  139.         error: function() {
  140.             //请求异常回调
  141.             layer.alert('封面图片上传失败', {
  142.                 icon: 2
  143.             });
  144.         }
  145.     });
  147. });
  149. //在父窗口中调用了save方法
  150. function save() {
  152.     if ($('input[name="title"]').val().trim() === '') {
  153.         error('请输入文章标题');
  154.         return false;
  155.     }
  157.     //把form表单中的数据序列化后通过post提交
  158.     var data ={
  159.         _token:_token,
  160.         aid: $('input[name="aid"]').val(),
  161.         title: $('input[name="title"]').val(),
  162.         auth_id: $('select[name="auth_id"]').val(),
  163.         cid: $('select[name="cid"]').val(),
  164.         thumb:$('#show_thumb').attr('src'),
  165.         subtitle:$('input[name="subtitle"]').val(),
  166.         keywords:$('input[name="keywords"]').val(),
  167.         descs:$('textarea[name="descs"]').val(),
  168.         //获取状态的checed属性值，如果选中保存为1=已发布，否则保存为0=草稿
  169.         status:$('input[name="status"]').attr('checked')?1:0,
  170.         detail:ue.getContent(),//获取副文本编辑器中的数据
  172.     };
  173.     //把js对象转换为一个json字符串，然后在网络中传输
  174.     JSON.stringify(data);
  175.     $.post('/admins/article/save',
  176.         data,
  177.         function(res) {
  178.             if (res.status > 0) {
  179.                 error(res.msg);
  180.             } else {
  181.                 layer.msg(res.msg);
  182.                 setTimeout(function() {
  183.                     //假设这是iframe页
  184.                     var index = parent.layer.getFrameIndex(window.name); //先得到当前iframe层的索引
  185.                     //关闭当前窗口
  186.                     parent.layer.close(index); //再执行关闭  
  187.                     //刷新父窗口，重新显示账号管理员列表
  188.                     parent.window.location.reload();
  189.                 }, 1000);
  191.             }
  192.         }, 'json');
  194.     function error(msg) {
  195.         layer.alert(msg, {
  196.             icon: 2
  197.         });
  198.     }
  199. }
  200. </script>
  202. </html>


4.路由文件web.php

  2. <?php
  4. use Illuminate\Support\Facades\Route;
  6. /*
  7. |--------------------------------------------------------------------------
  8. | Web Routes
  9. |--------------------------------------------------------------------------
  10. |
  11. | Here is where you can register web routes for your application. These
  12. | routes are loaded by the RouteServiceProvider within a group which
  13. | contains the "web" middleware group. Now create something great!
  14. |
  15. */
  17. Route::get('/', function(){
  18.     return view('welcome');
  19. });
  22. //登录页面
  23. Route::get('/admins/account/login','admins\Account@login')->name('login');//使用name()方法对路由进行命名
  24. //验证码图片
  25. Route::get('/admins/account/captcha','admins\Account@captcha');
  26. //登录操作
  27. Route::post('/admins/account/dologin','admins\Account@dologin');
  29. //后台首页
  30. //调用框架自带的auth中间件判断是否登录,namespace()方法指定控制器的命令空间，group()方法中是一个回调函数，把一组路由写在这个回调函数中
  31. Route::namespace('admins')->middleware(['auth','rights'])->group(function(){
  32.     Route::get('/admins/home/index','Home@index');
  33.     Route::get('/admins/home/welcome','Home@welcome');
  34.     Route::get('/admins/home/logout','Home@logout');
  36. //账号管理
  37.     Route::get('/admins/admin/index','Admin@index');
  38.     //添加账号
  39.     Route::get('/admins/admin/add','Admin@add');
  40.     //修改账号
  41.     Route::get('/admins/admin/edit','Admin@edit');
  42.     //保存账号
  43.     Route::post('/admins/admin/save','Admin@save');
  44.     //删除账号
  45.     Route::get('/admins/admin/del','Admin@del');
  47. //菜单管理
  48.     Route::get('/admins/menus/index','Menus@index');
  49.     //添加菜单
  50.     Route::get('/admins/menus/add','Menus@add');
  51.     //修改菜单
  52.     Route::get('/admins/menus/edit','Menus@edit');
  53.     //保存菜单
  54.     Route::post('/admins/menus/save','Menus@save');
  55.     //删除菜单
  56.     Route::get('/admins/menus/del','Menus@del');
  58. //角色管理
  59.     Route::get('/admins/groups/index','Groups@index');
  60.     //添加角色
  61.     Route::get('/admins/groups/add','Groups@add');
  62.     //修改角色
  63.     Route::get('/admins/groups/edit','Groups@edit');
  64.     //保存角色
  65.     Route::post('/admins/groups/save','Groups@save');
  66.     //删除角色
  67.     Route::get('/admins/groups/del','Groups@del');
  69. //文章管理
  70.     Route::get('/admins/article/index','Article@index');
  71.     //添加文章
  72.     Route::get('/admins/article/add','Article@add');
  73.     //修改文章
  74.     Route::get('/admins/article/edit','Article@edit');
  75.     //保存文章
  76.     Route::post('/admins/article/save','Article@save');
  77.     //删除文章
  78.     Route::get('/admins/article/del','Article@del');
  80. //文件上传管理
  81.     //文章封面上传
  82.     Route::post('/admins/upload/upload_img','Upload@upload_img');
  83. });

5.数据库扩展DBserviceProvider.php

  2. <?php
  4. namespace App\Providers;
  6. use Illuminate\Database\Query\Builder as QueryBuilder;
  8. use Illuminate\Support\ServiceProvider;
  10. class DBServiceProvider extends ServiceProvider
  11. {
  12.     public function boot()
  13.     {
  14.         //扩展DB类中的查询结果集的方法，把结果集转换为数组
  15.        QueryBuilder::macro('lists',function(){
  16.            $res=[];
  17.            $data = $this->get()->toArray();
  18.            foreach($data as $item):
  19.                 $res[]=(array)$item;
  20.            endforeach;
  21.            return $res?$res:false;//判断返回结果是否为空，为空返回false,这样前端渲染数据不容易出错
  22.        });
  23.         //扩展DB类中的查询结果为一条记录，把结果转换为数组
  24.        QueryBuilder::macro('item',function(){
  25.            $data=[];
  26.            $data = $this->get()->first();
  27.            $data = (array)$data;
  28.            return $data?$data:false;//判断返回结果是否为空，为空返回false,这样前端渲染数据不容易出错
  29.        });
  30.          //扩展DB类中的查询结果为数组的索引转换为记录的索引
  31.          QueryBuilder::macro('cate',function($index){
  32.              $res=[];
  33.             $data = $this->lists();
  34.             foreach($data as $item):
  35.                 //把查询结果集中的索引转换为记录中索引号
  36.                 $res[$item[$index]]=(array)$item;
  37.            endforeach;
  38.            return $res?$res:false;//判断返回结果是否为空，为空返回false,这样前端渲染数据不容易出错
  39.         });
  41.         QueryBuilder::macro('pages',function( $perPage = 15,$columns = ['*'],$pageName = 'page',$page = null){
  42.             $res= [];
  43.             $res['data']=[];
  44.             $res['total']=[];
  45.             $pageObj = $this->paginate($perPage,$columns,$pageName,$page);
  46.             $lists = $pageObj->items();
  47.             foreach($lists as $list):
  48.                 $res['data'][] = (array)$list;
  49.             endforeach;
  50.             $res['total'] = $pageObj->total();
  51.             return $res?$res:false;//判断返回结果是否为空，为空返回false,这样前端渲染数据不容易出错
  52.         });
  53.     }
  54. }

6.文件上传控制器Upload.php

  2. <?php
  4. namespace App\Http\Controllers\admins;
  6. use App\Http\Controllers\Controller;
  8. //引入storage类，用于文件存储
  9. use Illuminate\Support\Facades\Storage;
  11. use Illuminate\Http\Request;
  12. //引入数据库查询构造器，链式调用
  13. use Illuminate\Support\Facades\DB;
  14. use PhpParser\Node\Expr\FuncCall;
  16. //文件上传控制器
  17. class Upload extends Controller
  18. {
  19.     public function upload_img(Request $req)
  20.     {   
  21.         //把上传的文件进行存储，存储在stroage目录中的app目录下的public/thumb
  22.         $path = $req->file('file')->store('public/thumb/'.date('Y/m/d'));
  23.         //使用
  24.         //把存储文件地址转换为能访问的文件地址
  25.         $path = Storage::url($path);
  26.         // echo '<pre>';
  27.         // print_r($path);
  28.         // exit;
  29.         return json_encode(['status'=>'0','msg'=>'文件上传成功','data'=>['src'=>$path]]);
  30.     }
  31. }
Correcting teacher：天蓬老师天蓬老师

Correction status：qualified

Teacher's comments：坚持 必将 带来收获
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