【Laravel系统3.3】控制器与表单验证

php artisan make:controller TestController

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class TestController extends Controller
{
    //
}

public function test(){
}

Route::get('test/test', 'App\Http\Controllers\TestController@test');
// http://laravel8/test/test

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class Test2Controller extends Controller
{
    //
    public function __invoke()
    {
        echo 'single action controller';
    }
}

Route::get('test/test2', 'App\Http\Controllers\Test2Controller');
// http://laravel8/test/test2
// single action controller

// 控制器
public function test2(Request $request, $id){
    var_dump($request === \request()); // bool(true)
    return 'test2: ' . $id . ', ' . $request->input('name', '') . ', ' . \request()->input('sex', '');
}

// 路由
Route::get('test/test2/{id}', 'App\Http\Controllers\TestController@test2');
// http://laravel8/test/test2/2?name=Bob&sex=male

php artisan make:controller ResourceTestController --resource

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class ResourceTestController extends Controller
{
    /**
     * Display a listing of the resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        //
        return 'get列表';
    }

    /**
     * Show the form for creating a new resource.
     *
     * @return \Illuminate\Http\Response
     */
    public function create()
    {
        //
        return 'post添加数据-显示表单';
    }

    /**
     * Store a newly created resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @return \Illuminate\Http\Response
     */
    public function store(Request $request)
    {
        //
        return 'post保存数据';
    }

    /**
     * Display the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function show($id)
    {
        //
        return 'get单条数据';
    }

    /**
     * Show the form for editing the specified resource.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function edit($id)
    {
        //
        return 'get修改数据-显示表单';
    }

    /**
     * Update the specified resource in storage.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function update(Request $request, $id)
    {
        //
        return 'put/patch修改数据';
    }

    /**
     * Remove the specified resource from storage.
     *
     * @param  int  $id
     * @return \Illuminate\Http\Response
     */
    public function destroy($id)
    {
        //
        return 'delete删除数据';
    }
}

Route::resource('test/resource', 'App\Http\Controllers\ResourceTestController');

protected function runController()
{
    return $this->controllerDispatcher()->dispatch(
        $this, $this->getController(), $this->getControllerMethod()
    );
}

$this->action->uses = "App\Http\Controllers\ResourceTestController@index";

// ValidateController
public function create(){
    return view("validate.create");
}

// validate/create.blade.php
@if ($errors->any())
<div class="alert alert-danger">
    <ul>
        @foreach ($errors->all() as $error)
        <li>{{ $error }}</li>
        @endforeach
    </ul>
</div>
@endif

<h2>表单验证</h2>
<form method="post" action="http://laravel8/validate/store">
    <label>标题</label><input name="title"/><br/>
    <label>作者</label><input name="author"/><br/>
    <label>年龄</label><input name="age"/><br/>
    <label>内容</label><input name="body"/><br/>
    <input type="hidden" name="_token" value="{{ csrf_token() }}"/>
    <button type="submit">提交</button>
</form>

// route/web.php
Route::get('validate/create', 'App\Http\Controllers\ValidateController@create');

// ValidateController
public function store(Request $request){
    $validatedData = $request->validate([
        'title'=>"required|max:20",
        'author'=>['required','min:2', 'max:20'],
        'age'=>"numeric",
        'body'=>"required"
    ]);
}

// route/web.php
Route::post('validate/store', 'App\Http\Controllers\ValidateController@store');

@if ($errors->any())
<div class="alert alert-danger">
    <ul>
        @foreach ($errors->all() as $error)
        <li>{{ $error }}</li>
        @endforeach
    </ul>
</div>
@endif

public function store2(Request $request){
    $validator = Validator::make($request->all(), [
        'title'=>"required|max:20",
        'author'=>['required','min:2', 'max:20'],
        'age'=>"numeric",
        'body'=>"required"
    ], [
        'title.required'=>'请填写标题',
        'title.max'=>'标题最大不超过20个字符',
        'author.required'=>'请填写作者',
        'author.min'=>'作者最少填写2个字符',
        'author.max'=>'作者最大不超过20个字符',
        'age.numeric'=>'年龄必须是数字',
        'body.required'=>'内容必填'
    ]);

    if($validator->fails()){
        return redirect('validate/create')
            ->withErrors($validator)
            ->withInput();
    }
}

// laravel/framework/src/Illuminate/Http/RedirectResponse.php
public function withErrors($provider, $key = 'default')
{
    $value = $this->parseErrors($provider);

    $errors = $this->session->get('errors', new ViewErrorBag);

    if (! $errors instanceof ViewErrorBag) {
        $errors = new ViewErrorBag;
    }

    $this->session->flash(
        'errors', $errors->put($key, $value)
    );

    return $this;
}