laravel 框架简易增删改查

时间:2021-10-11
本文章向大家介绍laravel 框架简易增删改查，主要包括laravel 框架简易增删改查使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。

参看网址：http://www.yan.com/mou/add

图书增加HTML页面

//图书增加路由
Route::get('mou/add','MouController@store');
//控制器代码，这一步渲染添加的视图
  public function add()
    {
        return view('mou.mouadd');
    }

//添加视图HTML代码

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>添加页面</title>
    <link rel="stylesheet" href="http://apps.bdimg.com/libs/bootstrap/3.3.0/css/bootstrap.min.css">

</head>
<body>
<form action="/mou/insert" method="post" enctype="multipart/form-data" style="width: 300px;">
    @csrf
    <div class="form-group">
        <label for="name">标题</label>
        <input type="text" class="form-control" name="title"  >
    </div>
    <div class="form-group">
        <label for="name">作者</label>
        <input type="text" class="form-control" name="author"  >
    </div>
    <div class="form-group">
        <label for="name">书图</label>
        <input type="file" class="form-control" name="img"  >
    </div>
    <div class="form-group">
        <label for="name">分类</label>
        <input type="text" class="form-control" name="type" >
    </div>
    <input type="submit" value="立即添加">

</form>
</body>
</html>

//处理添加入库，数据库展示，删除，修改以及静态化详情控制器代码

 
<?php

namespace App\Http\Controllers;

use App\models\mouModel;
use Illuminate\Http\Request;
use QL\QueryList;

class MouController extends Controller
{
    //
    public function store()
    {
        //采集的地址
        $url = 'https://www.hongxiu.com/search?kw=%E5%8E%86%E5%8F%B2';
        $content = file_get_contents($url);

        $range = '.book-mid-info';
        $rules = [
            'title' => ['h4', 'text'],
            'author' => ['p[class=author]', 'text'],
            'img' => ['img', 'src'],
            'type' => ['a[target=_blank]', 'text']
        ];
        $data = QueryList::html($content)
            ->range($range)
            ->rules($rules)
            ->queryData();

        foreach ($data as $k => $v) {
            $path = 'http:' . $v['img'];
            $file = file_get_contents($path);
            $filename = './book/' . md5($k) . '.jpg';
            file_put_contents($filename, $file);
        }

        $res = mouModel::store($data);
        if ($res) {
            echo "<font color='red'>采集成功</font>";
            header('refresh:2,url=/mou/list');
        } else {
            echo "<font color='red'>采集失败</font>";
            header('refresh:2,url=/mou/list');
        }
    }
//图书添加页面
    public function add()
    {
        return view('mou.mouadd');
    }

//图书入库
    public function insert(Request $request)
    {
//        接受参数
        $params = $request->except('_token');
        //处理图片
        $path = '/' . $request->file('img')->store('img');
        $params['img'] = $path;
//        进行添加入库
        $res = mouModel::store($params);
        if ($res) {
            echo "<font color='red'>添加成功</font>";
            header('refresh:2,url=/mou/list');
        } else {
            echo "<font color='red'>添加失败</font>";
            header('refresh:2,url=/mou/add');
        }
    }
//展示
    public function list(Request $request)
    {
        $word=$request->input('word');
        $data = mouModel::list($word);

        return view('mou.moulist', compact('data','word'));
    }
//删除
    public function del($id)
    {
//        这里可进行验证id不可以为空，是不是纯数字
        $res = mouModel::del($id);
        if ($res) {
            echo "<font color='red'>删除成功</font>";
            header('refresh:2,url=/mou/list');
        } else {
            echo "<font color='red'>删除失败</font>";
            header('refresh:2,url=/mou/list');
        }
    }
//详情展示
    public function updataone($id)
    {
        //        这里可进行验证id不可以为空，是不是纯数字
        $data = mouModel::updataone($id);
        return view('mou.mouupdataone', compact('data'));
    }
//修改
    public function updata(Request $request)
    {
        $params = $request->all();
        $res = mouModel::updata($params);
        if ($res) {
            echo "<font color='red'>修改成功</font>";
            header('refresh:2,url=/mou/list');
        } else {
            echo "<font color='red'>修改失败</font>";
            header('refresh:2,url=/mou/list');
        }
    }
    //静态化详情
    public function listone($id)
    {
        $filrname = "./book/" . md5($id) . ".html";
        if (file_exists($filrname)) {
            echo file_get_contents($filrname);
        } else {
            $data = mouModel::listone($id);
            $html = view('mou.moulistone', compact('data'));
            file_put_contents($filrname, $html);
            return $html;
        }
    }

}

//处理添加入库，数据库展示，删除，修改以及静态化详情模型代码

<?php

namespace App\models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class mouModel extends Model
{
    //软删除
    use SoftDeletes;
//定义数据表
    protected $table = 'mou';
//    定义主键id
    public $primaryKey = 'id';
//    设置时间戳为关
    public $timestamps = false;
//添加入库的模型代码
    public static function store($param)
    {
        return self::insert($param);
    }
    //展示
    public static function list($word)
    {
        return self::where('title','like',"%$word%")->paginate(5);

    }
    //删除
    public static function del($id)
    {
        return self::find($id)->delete();
    }
    //修改展示页面
    public static function updataone($id)
    {
        return self::find($id);
    }
    //修改
    public static function updata($params)
    {
        $obj = self::find($params['updata_id']);
        $obj->title = $params['title'];
        $obj->author = $params['author'];
        $obj->img = $params['new_img'];
        $obj->type = $params['type'];
        return $obj->save();
    }
    //详情展示
    public static function listone($id){
        return self::find($id);
    }
}

//修改HTML代码：

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>修改页面</title>
    <link rel="stylesheet" href="http://apps.bdimg.com/libs/bootstrap/3.3.0/css/bootstrap.min.css">

</head>
<body>
<form action="/mou/updata" method="post" style="width: 300px;">
    @csrf
    <div class="form-group">
        <label for="name">标题</label>
        <input type="text" class="form-control" name="title" value="{{$data['title']}}" >
    </div>
    <div class="form-group">
        <label for="name">作者</label>
        <input type="text" class="form-control" name="author" value="{{$data['author']}}" >
    </div>
    <div class="form-group">
        <label for="name">书图</label>
        <img src="{{$data['img']}}" alt="无法显示">
        <input type="file" value="new_img" name="new_img" >
    </div>
    <div class="form-group">
        <label for="name">分类</label>
        <input type="text" class="form-control" name="type" value="{{$data['type']}}">
    </div>
{{--    隐藏的id，传至控制器--}}
    <input type="hidden" value="{{$data['id']}}" name="updata_id">
    <input type="submit" value="立即修改">
</form>

</body>
</html>

原文地址：https://www.cnblogs.com/xiaoyantongxue/p/15393124.html

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