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Laravel 學習的基礎知識

不言原創: 2018-07-04 14:14:092557瀏覽

這篇文章主要介紹了關於Laravel 學習的基礎知識，有著一定的參考價值，現在分享給大家，有需要的朋友可以參考一下

1.MVC簡介

MVC全名是Model View Controller,是模型-視圖-控制器的縮寫
Model是應用程式中用於處理應用程式資料邏輯的部分
View是應用程式中處理資料顯示的部分
Controller是應用程式中處理使用者互動的部分

2.laravel核心目錄檔案

Laravel 學習的基礎知識

##app包含了使用者的核心程式碼
booststrap包含框架啟動和設定載入檔
config包含所有的設定檔
database包含資料庫填入與移轉檔案
public包含專案入口可靜態資源檔案
resource包含檢視與原始的資源檔案
stroage包含編譯後的範本檔案以及基於檔案的session和檔案快取、日誌和框架檔案
tests單元測試檔案
wendor包含compose的依賴檔案

#3.路由

多要求路由

Route::match([&#39;get&#39;, &#39;post&#39;]), &#39;match&#39;, funtion()
{
    return &#39;match&#39;;
});
Route::any([&#39;get&#39;, &#39;post&#39;]),  funtion()
{
    return &#39;any&#39;;
});

路由參數

Route::get(&#39;user/{name}&#39;,  funtion($name)
{
    return $id;
})->where(&#39;name&#39;, &#39;[A-Za-z]+&#39;);
Route::get(&#39;user/{id}/{name?}&#39;,  funtion($id, $name=&#39;phyxiao&#39;)
{
    return $id. $name;
})->where([&#39;id&#39; => &#39;[0-9]+&#39;, &#39;name&#39;=> &#39;[A-Za-z]+&#39;]);

路由別名

Route::get(&#39;user/home&#39;,  [&#39;as&#39; => &#39;home&#39;, funtion()
{
    return route(&#39;home&#39;);
}]);

路由群組

Route::group([&#39;prefix&#39; => &#39;user&#39;], funtion()
{
    Route::get(&#39;home&#39;, funtion()
   {
    return &#39;home&#39;;
   });
    Route::get(&#39;about&#39;, funtion()
   {
    return &#39;about&#39;;
   });
});

路由輸出檢視

Route::get(&#39;index&#39;,  funtion()
{
    return view(&#39;welcome&#39;);
});

4.控制器

建立控制器

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

路由關聯控制器

Route::get(&#39;index&#39;,  &#39;UserController@index&#39;);

5.模型

php artisan make:model User

6.資料庫

##三種方式：

DB facode原始尋找
、查詢建構器 和Eloquent ORM#相關檔案config/database.php
、.env

####################################################################### ########查詢建構器###

$bool = DB::table(&#39;user&#39;)->insert([&#39;name => phyxiao&#39;, &#39;age&#39; => 18]);
$id = DB::table(&#39;user&#39;)->insertGetId([&#39;name => phyxiao&#39;, &#39;age&#39; => 18]);
$bool = DB::table(&#39;user&#39;)->insert([
    [&#39;name => phyxiao&#39;, &#39;age&#39; => 18],
    [&#39;name => aoteman&#39;, &#39;age&#39; => 19],
);
var_dump($bool);

$num= DB::table(&#39;user&#39;)->where(&#39;id&#39;, 12)->update([&#39;age&#39; => 30]);
$num= DB::table(&#39;user&#39;)->increment(&#39;age&#39;, 3);
$num= DB::table(&#39;user&#39;)->decrement(&#39;age&#39;, 3);
$num= DB::table(&#39;user&#39;)->where(&#39;id&#39;, 12)->increment(&#39;age&#39;, 3);
$num= DB::table(&#39;user&#39;)->where(&#39;id&#39;, 12)->increment(&#39;age&#39;, 3, [&#39;name&#39; =>&#39;handsome&#39;]);

$num= DB::table(&#39;user&#39;)->where(&#39;id&#39;, 12)->delete();
$num= DB::table(&#39;user&#39;)->where(&#39;id&#39;, &#39;>=&#39;, 12)->delete();
DB::table(&#39;user&#39;)->truncate();

$users= DB::table(&#39;user&#39;)->get();
$users= DB::table(&#39;user&#39;)->where(&#39;id&#39;, &#39;>=&#39;, 12)->get();
$users= DB::table(&#39;user&#39;)->whereRaw(&#39;id >= ? and age > ?&#39;, [12, 18])->get();
dd(users);
$user= DB::table(&#39;user&#39;)->orderBy(&#39;id&#39;, &#39;desc&#39;)->first();
$names = DB::table(&#39;user&#39;)->pluck(&#39;name&#39;);
$names = DB::table(&#39;user&#39;)->lists(&#39;name&#39;, &#39;id&#39;);
$users= DB::table(&#39;user&#39;)->select(&#39;id&#39;, &#39;age&#39;, &#39;name&#39;)->get();
$users= DB::table(&#39;user&#39;)->chunk(100, function($user){
dd($user);
if($user->name == &#39;phyxiao&#39;)
return false;
});

$num= DB::table(&#39;user&#39;)->count();
$max= DB::table(&#39;user&#39;)->max(&#39;age&#39;);
$min= DB::table(&#39;user&#39;)->min(&#39;age&#39;);
$avg= DB::table(&#39;user&#39;)->avg(&#39;age&#39;);
$sum= DB::table(&#39;user&#39;)->avg(&#39;sum&#39;);

###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 = &#39;user&#39;;
    //指定id
    protected $primaryKey= &#39;id&#39;;
    //指定允许批量赋值的字段
    protected $fillable= [&#39;name&#39;, &#39;age&#39;];
    //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(&#39;id&#39;, &#39;>=&#39;, &#39;10&#39;)->orderBy(&#39;age&#39;, &#39;desc&#39;)->first();
    $num = Student::count();


    //使用模型新增数据
    $students = new Student();
    $students->name = &#39;phyxiao&#39;;
    $students->age= 18;
    $bool = $student->save();

    $student = Student::find(20);
    echo date(&#39;Y-m-d H:i:s&#39;, $student->created_at);


    //使用模型的Create方法新增数据
    $students = Student::create(
        [&#39;name&#39; => &#39;phyxiao&#39;, &#39;age&#39; => 18]
    );
    //firstOrCreate()
    $student = Student::firstOrCreate(
        [&#39;name&#39; => &#39;phyxiao&#39;]
    );
    //firstOrNew()
    $student = Student::firstOrNew(
        [&#39;name&#39; => &#39;phyxiao&#39;]
    );
    $bool= $student->save();


    //使用模型更新数据
    $student = Student::find(20);
    $student->name = &#39;phyxiao&#39;;
    $student->age= 18;
    $bool = $student->save();

    $num = Student::where(&#39;id&#39;, &#39;>&#39;, 20)->update([&#39;age&#39; => 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(&#39;id&#39;, &#39;>&#39;, 20)->delete;

}

###7.Blade模板引擎###

<!--展示某个section内容 占位符-->
@yield(&#39;content&#39;, &#39;内容&#39;)
<!--定义视图片段-->
@section(‘header’)
头部
@show

@extends(&#39;layouts&#39;)
@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(&#39;Y-m-d H:i:s&#39;, time()) }}</p>

    <p>{{ in_array($name, $arr) ? &#39;true&#39;: &#39;false&#39; }}</p>
    <p>{{ $name or &#39;default&#39; }}</p>

    <!--原样输出-->
    <p>@{{$name}}</p>

    {{--模板注释--}}

    {{--引入子视图--}}
    @include(&#39;common&#39;, [&#39;msg&#39; => &#39;erro&#39;])

    {{--流控制--}}
    @if ($name == &#39;phyxiao&#39;)
        I&#39;m phyxiao
    @elseif($name == &#39;handsome&#39;)
        I&#39;m handsome
    @else
        none
    @endif

    @unless($name == &#39;phyxiao&#39;)
        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(&#39;url&#39;)}}">text</a>
    <a herf = "{{action(&#39;UserController@index&#39;)}}">text</a>
    <a herf = "{{route(&#39;url&#39;)}}">text</a>

@stop

###以上就是本文的全部內容，希望對大家的學習有幫助，更多相關內容請關注PHP中文網！ ###### 相關推薦：#########laravel的目錄結構######

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Laravel 學習的基礎知識

1.MVC簡介

2.laravel核心目錄檔案

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

相關文章

Laravel 學習的基礎知識

1.MVC簡介

2.laravel核心目錄檔案

Route::match([&#39;get&#39;, &#39;post&#39;]), &#39;match&#39;, funtion() { return &#39;match&#39;; }); Route::any([&#39;get&#39;, &#39;post&#39;]), funtion() { return &#39;any&#39;; });

Route::get(&#39;user/{name}&#39;, funtion($name) { return $id; })->where(&#39;name&#39;, &#39;[A-Za-z]+&#39;); Route::get(&#39;user/{id}/{name?}&#39;, funtion($id, $name=&#39;phyxiao&#39;) { return $id. $name; })->where([&#39;id&#39; => &#39;[0-9]+&#39;, &#39;name&#39;=> &#39;[A-Za-z]+&#39;]);

Route::get(&#39;user/home&#39;, [&#39;as&#39; => &#39;home&#39;, funtion() { return route(&#39;home&#39;); }]);

Route::group([&#39;prefix&#39; => &#39;user&#39;], funtion() { Route::get(&#39;home&#39;, funtion() { return &#39;home&#39;; }); Route::get(&#39;about&#39;, funtion() { return &#39;about&#39;; }); });

Route::get(&#39;index&#39;, funtion() { return view(&#39;welcome&#39;); });

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

Route::get(&#39;index&#39;, &#39;UserController@index&#39;);

php artisan make:model User

相關文章

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'); });

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