Laravel 学习的基础知识

MVC全名是Model View Controller,是模型-视图-控制器的缩写
Model是html' target='_blank'>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 UserControllerphp 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 

// 建立模型// app/user.php ?phpnamespace 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.phppublic 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();
 a herf = {{action( UserController@index )}} text /a  a herf = {{route( url )}} text /a @stop

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