Laravel入门与实战示例代码----收集和处理用户数据

示例6-1 $request->all()

<!-- GET route form view at /get-route -->
<form method="post" action="/post-route?utm=12345">
    {{ csrf_field() }}
    <input type="text" name="firstName">
    <input type="submit">
</form>

Route::post('/post-route', function(Request $request){
    var_dump($request->all());
});

//输出
/**
*[
*   '_token' => 'CSRF token here'.
*   'firstName' => 'value',
*   'utm' => 12345
*]
*/

示例6-2 $request->except()

Route::post('/post-route', function(Request $request){
    var_dump($request->except('_token'));
});
//输出
/**
*[
*   'firstName' => 'value',
*   'utm' => 12345
*]
*/

示例6-3 $request->only()

Route::post('/post-route', function(Request $request){
    var_dump($request->only(['firstName','utm']));
});

//输出
/**
*[
*   'firstName' => 'value',
*   'utm' => 12345
*]
*/

示例6-4 $request->has()

//通过/post->route传递路由
if($request->has('utm')){
    //进行分析
}

示例6-5 $request->input()

Route::post('/post-route', function(){
    $userName = $request->input('name', '(anonymous)');
});

示例6-6 通过点标记法在用户数据中访问数组值

<!-- GET route form view at /get-route -->
<form method="post" action="/post-route">
    {{ csrf_field() }}
    <input type="text" name="employees[0][firstName]">
    <input type="text" name="employees[0][lastName]">
    <input type="text" name="employees[1][firstName]">
    <input type="text" name="employees[1][lastName]">
    <input type="submit">
</form>

//通过 /post-route 传递路由
Route::post('/post-route', function(Request $request){
    $employeeZeroFirstName = $request->input('employees.0.firstName');
    $allLastNames = $request->input('employees.*.lastName');
    $employeeOne = $request->input('employees.1');
});

示例6-7 使用$request->input()从json获取数据

POST /post-route HTTP/1.1
Content-Type: application/json
{
    "firstName": "Joe",
    "lastName": "schmoe",
    "spouse":{
        "firstName": "jill",
        "lastName": "Schmoe"
    }
}
//post-route
Route::post('post-route', function(Request $request){
    $firstName = $request->input('firstName');
    $spouseFirstname = $request->input('spouse.firstName');
});

示例6-8 从路由参数获取URL详细信息

//routes/web.php
Route::get('users/{id}', function($id){
    //如果用户访问 myapp.com/users/15/, $id 等同于 15
});

示例6-9 上传文件的表单

<form method="post" enctype="multipart/form-data">
    {{ csrf_field() }}
    <input type="text" name="name">
    <input type="file" name="profile_picture">
    <input type="submit">
</form>

示例6-10 提交示例6-9中的表单后的输出

Route::post('form', function(Request $request){
    var_dump($request-all());
});
//输出
//[
//      "_token" => "token here"
//      "name" => "asdf"
//      "profile_picture" => UploadedFile()
//]

Route::post('form', function(Request $request){
    if( $request0<hasFile('profile_picture')){
        var_dump($request0<file('profile_picture'));
    }
});

//输出
// UploadedFile(details)

if($request->hasFile('profile_picture')){
    $path = $request->profile_picture->store('profile', 's3');
    auth()->user()->profile_picture = $path;
    auth()->user()->save();
}

示例6-12 控制器验证

//Routes/web.php
Route::get('recipes/create', 'RecipesController@create');
Route::post('recipes', 'RecipesController@store');

// app/Http/Controllers.RecipesController.php
<?php

 namespace App\Http\Controllers;

 use Illuminate\Http\Request;

 class RecipesController extends Controller{
    public function create(){
        return view('recipes.create');
    }

    public function store(Request $request){
        $this->validate($request, [
            'title' => 'required | unique:recipes |max:125',
            'body' => 'required'
        ]);
    }
 }

示例6-13 手动验证

Route::get('recipes/create', function(){
    return view('recipes.create');
});

Route::post('recipes', function(Illuminate\Http\Request $request){
    $validator = Validator::make($request->all(),[
        'title' => 'required|unique:recipes|max:125',
        'body' => 'required'
    ]);

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

示例6-14 输出验证错误

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

示例6-15 表单请求示例

<?php
namespace App\Http\Requests;

use App\BlogPost;
use App\Http\Requests\Request;

class CreateCommentRequest extends Request{
    public function rules(){
        return [
            'body' => 'required|max:1000'
        ];
    }

    public function authorize(){
        $blogPostId = $this->route('blogPost');
        return auth()->check() && BlogPost::where('id', $blogPostId)
            ->where('user_id', auth()->user()->id)->exists();
    }
} 

示例6-16 使用表单请求

Route::post('comments', function(App\Http\Requests\CreateCommentRequest $request){
    //Store comment
});

示例6-17 将整个表单传递给Eloquent模型

Route::post('posts', function(Request $request){
    $newPost = Post::create($request->all());
});

示例6-18 从恶意质量分配中保护Eloquent模型

<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Post extends Model{
    //在author_id字段上禁用质量分配
    protected $guarded = ['author_id'];
}

示例6-19 测试无效输入并被拒绝

public function test_input_missing_a_title_is_rejected(){
    $this->post('posts', ['body' => 'This is the body of my post']);
    $this->assertRedirectedTo('posts/create');
    $this->assertSessionHasErrors();
    $this->assertHasOldInput();
}

示例6-20 测试有效输入并对输入进行处理

public function test_valid_input_should_create_a_post_in_the_database(){
    $this->post('posts', ['title' => 'Post Title', 'body' => ' This is the body']);
    $this->seeInDatabase(['title' => 'Post Title']);
}