Laravel 从入门到放弃

MVC全名是Model View Controller,是模型-视图-控制器的缩写
Model是应用程序中用于处理应用程序数据逻辑的部分
View是应用程序中处理数据显示的部分
Controller是应用程序中处理用户交互的部分

app包含了用户的核心代码
booststrap包含框架启动和配置加载文件
config包含所有的配置文件
database包含数据库填充与迁移文件
public包含项目入口可静态资源文件
resource包含视图与原始的资源文件
stroage包含编译后的模板文件以及基于文件的session和文件缓存、日志和框架文件
tests单元测试文件
wendor包含compose的依赖文件

Route::match(['get', 'post']), 'match', funtion() {     return 'match'; }); Route::any(['get', 'post']),  funtion() {     return 'any'; });

Route::get('user/{name}',  funtion($name) {     return $id; })->where('name', '[A-Za-z]+'); Route::get('user/{id}/{name?}',  funtion($id, $name='phyxiao') {     return $id. $name; })->where(['id' => '[0-9]+', 'name'=> '[A-Za-z]+']);

Route::get('user/home',  ['as' => 'home', funtion() {     return route('home'); }]);

Route::group(['prefix' => 'user'], funtion() {     Route::get('home', funtion()    {     return 'home';    });     Route::get('about', funtion()    {     return 'about';    }); });

Route::get('index',  funtion() {     return view('welcome'); });

php artisan make:controller UserController php artisan make:controller UserController --plain

Route::get('index',  'UserController@index');

php artisan make:model User

三种方式：DB facode原始查找 、查询构造器 和Eloquent ORM
相关文件 config/database.php、.env

$bool = DB::table('user')->insert(['name => phyxiao', 'age' => 18]); $id = DB::table('user')->insertGetId(['name => phyxiao', 'age' => 18]); $bool = DB::table('user')->insert([     ['name => phyxiao', 'age' => 18],     ['name => aoteman', 'age' => 19], ); var_dump($bool);

$num= DB::table('user')->where('id', 12)->update(['age' => 30]); $num= DB::table('user')->increment('age', 3); $num= DB::table('user')->decrement('age', 3); $num= DB::table('user')->where('id', 12)->increment('age', 3); $num= DB::table('user')->where('id', 12)->increment('age', 3, ['name' =>'handsome']);

$num= DB::table('user')->where('id', 12)->delete(); $num= DB::table('user')->where('id', '>=', 12)->delete(); DB::table('user')->truncate();

$users= DB::table('user')->get(); $users= DB::table('user')->where('id', '>=', 12)->get(); $users= DB::table('user')->whereRaw('id >= ? and age > ?', [12, 18])->get(); dd(users); $user= DB::table('user')->orderBy('id', 'desc')->first(); $names = DB::table('user')->pluck('name'); $names = DB::table('user')->lists('name', 'id'); $users= DB::table('user')->select('id', 'age', 'name')->get(); $users= DB::table('user')->chunk(100, function($user){ dd($user); if($user->name == 'phyxiao') return false; });

$num= DB::table('user')->count(); $max= DB::table('user')->max('age'); $min= DB::table('user')->min('age'); $avg= DB::table('user')->avg('age'); $sum= DB::table('user')->avg('sum');

Eloquent ORM

// 建立模型 // app/user.php <?php namespace App; use Illuminate\Database\Eloquent\Model; class User extends Model {     //指定表名     protected $table = 'user';     //指定id     protected $primaryKey= 'id';     //指定允许批量赋值的字段     protected $fillable= ['name', 'age'];     //指定不允许批量赋值的字段     protected $guarded= [];     //自动维护时间戳     public $timestamps = true;      protected function getDateFormat()     {         return time();     }     protected function asDateTime($val)     {         return val;     } }

// ORM操作 // app/Http/Contollers/userController.php public function orm() {     //all     $students = Student::all();     //find     $student = Student::find(12);     //findOrFail     $student = Student::findOrFail(12);     // 结合查询构造器     $students = Student::get();     $students = Student::where('id', '>=', '10')->orderBy('age', 'desc')->first();     $num = Student::count();       //使用模型新增数据     $students = new Student();     $students->name = 'phyxiao';     $students->age= 18;     $bool = $student->save();      $student = Student::find(20);     echo date('Y-m-d H:i:s', $student->created_at);       //使用模型的Create方法新增数据     $students = Student::create(         ['name' => 'phyxiao', 'age' => 18]     );     //firstOrCreate()     $student = Student::firstOrCreate(         ['name' => 'phyxiao']     );     //firstOrNew()     $student = Student::firstOrNew(         ['name' => 'phyxiao']     );     $bool= $student->save();       //使用模型更新数据     $student = Student::find(20);     $student->name = 'phyxiao';     $student->age= 18;     $bool = $student->save();      $num = Student::where('id', '>', 20)->update(['age' => 40]);       //使用模型删除数据     $student = Student::find(20);     $bool = $student->delete();     //使用主见删除数据     $num= Student::destroy(20);     $num= Student::destroy([20, 21]);      $num= Student::where('id', '>', 20)->delete;  }

 <!--展示某个section内容 占位符--> @yield('content', '内容') <!--定义视图片段--> @section(‘header’) 头部 @show

@extends('layouts') @section(‘header’)     @parent     header @stop @section(‘content’)     content     <!--模板输出php变量-->     <p>{{$name}}</p>     <!--模板调用php代码-->     <p>{{ time() }}</p>     <p>{{ date('Y-m-d H:i:s', time()) }}</p>      <p>{{ in_array($name, $arr) ? 'true': 'false' }}</p>     <p>{{ $name or 'default' }}</p>      <!--原样输出-->     <p>@{{$name}}</p>      {{--模板注释--}}      {{--引入子视图--}}     @include('common', ['msg' => 'erro'])      {{--流控制--}}     @if ($name == 'phyxiao')         I'm phyxiao     @elseif($name == 'handsome')         I'm handsome     @else         none     @endif      @unless($name == 'phyxiao')         ture     @endunless      @for($i=0; $i < 10; $i++)         {{$i}}     @endfor      @foreach($students as $student)         {{$student->name}}     @endfor      @forelse($students as $student)         {{$student->name}}     @empty         null     @endforelse      <a herf = "{{url('url')}}">text</a>     <a herf = "{{action('UserController@index')}}">text</a>     <a herf = "{{route('url')}}">text</a>  @stop

文章来源: Laravel 从入门到放弃

标签

num

table

content