Question

我对编码和Laravel（使用5.7）非常陌生。我了解了如何创建一个基本的单页表单来填充数据库中的表（包括冲突和身份验证），但是我很难到达下一个级别。 我要设计的应用程序将具有多个表单和表格，我不知道如何将从第一个表单收集的信息链接到下一个表单。

让我们考虑一个具有以下内容的数据库： -客户表（通过表格A填充），例如：一个字段是client_id字段。 -产品表（通过表格B填充） -（最终会更多）

当用户（例如，分析客户行为的公司员工）填写表单页面A（URL：/ clients，GET方法：Clientcontroller @ create，查看clients.create.blade.php）时，他/她单击下一步。

我的想法是，“下一步”按钮应： -将信息提交到Client表（POST方法：Clientscontroller @ store） -并将用户重定向到表单的页面B，并保留URL中的client_id（URL：/ products / {client_id} / create，GET方法：Productscontroller @ create，查看products.create.blade.php）。 / p>

在“产品”表中，我有一个client_id列，并且在“客户和产品”模型之间存在一对多的关联。

提交表单B后，我想从URL检索{client_id}来填写Product表的client_id列，但是我被困在这里。我将不胜感激。为了简化学习过程，我认为客户只能购买一种产品。

主要问题是： -如何从products.create.blade.php视图的URL中检索{client_id}参数，以将其注入到客户端视图中（已经尝试了很多解决Stackoverflow中类似问题的方法）也： -我使用的方法正确吗？有什么建议/建议吗？

其他问题有点超出范围： -关于如何实施产品添加/删除字段的任何提示？

Web路由文件：

> <?php
>     Route::get('/', 'PagesController@welcome')->name('welcome');
>     Auth::routes();
>     //ROUTES FOR CLIENT
>     Route::resource('clients','ClientsController');
>     //ROUTES FOR PRODUCT (please note the {client_id} parameter)
>     Route::get('/products/{client_id}/create', 'ProductsController@create')->name('products.create');
>     Route::post('/products/{client_id}', 'ProductsController@store')->name('products.store');
>     //not sure if it should be Route::post('/products', 'ProductsController@store')->name('products.store');

客户控制者：

<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\Client; //THIS IS THE CLIENT MODEL
use App\User; ////THIS IS THE USER MODEL
class ClientsController extends Controller
{
    AUTH
    public function __construct()
            {
                $this->middleware('auth');
            }

    //INDEX (CLIENT)
    public function index()
        {
            //my code here
        }

    //CREATE (CLIENT)
    public function create()
        {
            $datas=[
            'controllermethod' => 'ClientsController@store',
            'client_id_field' => [
                        'input_type_l' => 'textinput',
                        'input_name_l' => 'client_id', //this what i am carrying over in URL
                        'input_label_l' => 'Client ID :',
                        'input_placeholder_l' => 'XXXXX',
                        'input_default_l' => ''
                ],
            'client_info_1_field' => [
                        'input_type_l' => 'textinput',
                        'input_name_l' => 'client_info_1'
                        'input_label_l' => 'Client Info 1 :',
                        'input_placeholder_l' => 'XXXXX',
                        'input_default_l' => ''
                ],
            'client_info_2_field' => [
                        'input_type_l' => 'textinput',
                        'input_name_l' => 'client_info_2'
                        'input_label_l' => 'Client Info 2 :',
                        'input_placeholder_l' => 'XXXXX',
                        'input_default_l' => ''
                ]
                    ],
        return view ('clients.create')->with($datas);
        }

    //STORE (CLIENT)
    public function store(Request $request)
            {
                $this->validate($request, [
                        'client_id' => 'required',
                ]);

                $client = new Client;
                $client->client_id = $request->input('client_id');
                $client->client_info_1 = $request->input('client_info_1');
                $client->client_info_2 = $request->input('client_info_2');
                $client->user_id = auth()->user()->id; //one to many relashionship betw user/client models
                $client->save();

            //          
            //this is how I inject the {client_id} parameter onto the URL
            //this works, the products.create view is displayed, the URL contain the client_id from formA entered by the user
            $client_id = $request->client_id;
            return redirect("/products/$client_id/create")->with('client_id', $client_id)
                                       ->with('success','New client record created');

    //SHOW/DESTROY/EDIT/UPDATE FUNCTIONS....all this work

产品控制器=我被困住了+不确定是否是正确的方法

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
//note sure if I need that
//use Illuminate\Routing\Route;
use App\Product;
use App\Client;
use App\User;

class ProductsController extends Controller
{   
        //AUTH
    public function __construct()
            {
                $this->middleware('auth');
            }

    //INDEX (PRODUCT)
        public function index()
        {
            //no code so far
        }

    //INDEX (PRODUCT)
    public function create()
        {
            $datas=[
                    'controllermethod' => 'ProductsController@store',
                //planning of having dynamic add/remove products fields but let's keep it simple (1 client -> 1 product)
            'product_id_field' => [
                        'input_type_l' => 'textinput',
                        'input_name_l' => 'product_id',
                        'input_label_l' => 'Date of cancer diagnosis :',
                        'input_default_l' => ''
                ],
            'product_info_1_field' => [
                        'input_type_l' => 'textinput',
                        'input_name_l' => 'product_info_1'
                        'input_label_l' => 'Product Info 1 :',
                        'input_placeholder_l' => 'XXXXX',
                        'input_default_l' => ''
                ],
            'product_info_2_field' => [
                        'input_type_l' => 'textinput',
                        'input_name_l' => 'product_info_2'
                        'input_label_l' => 'Product Info 2 :',
                        'input_placeholder_l' => 'XXXXX',
                        'input_default_l' => ''
                ]
                    ],
        //Below, I am not sure I should do that
        return view ('products.create')->with($datas);
        }

    // STORE (PRODUCT) = THAT's WHERE I AM STUCK
    // everything works except that the client_id column in the products table stays empty or filled with crap

    public function store(Request $request)
        {

        //NOT SURE WHAT TO DO HERE TO RETRIEVE THE {client_id} from the "/products/$client_id/create" ...
    //TO FURTHER INJECT IT AS A VALUE IN THE client_id COLUMN OF THE PRODUCT TABLE
    //I KNOW IT's CRAP, but I TRIED THINGS ALONG THOSE LINES:   
    //return $client_id;
        //$client_id = request()->route()->paremeters('client_id');
        //$client_id = request()->route('client_id');
        //$client_id = $request->client_id;
    //$client_id = url('client_id');


        $product = new Diagnosis;
        $product->product_id = $request->input('product_id');
        $product->product_info_1 = $request->input('product_info_1');
        $product->product_info_2 = $request->input('product_info_2');
        $product->user_id = auth()->user()->id;
    //I KNOW IT's CRAP, but I TRIED THINGS ALONG THOSE LINES:        
    //$diagnosis->client_id =  $client_id; //NB: if I write $diagnosis->client_id =  'whatever'; it works
        $diagnosis->save();

        //redirect to client.index view
    return redirect('/clients')->with('success','New patient diagnosis (-es) created'); 

    }

Answer 1

我们的解决方案将从寻找此路线开始：

Route::get('/products/{client_id}/create','ProductsController@create')->name('products.create');

这是包含我们要检索的client_id的路由，由于此值位于链接上，因此我们可以使用Request对象进行访问！

就像我说的那样，$ request对象已经包含了client_id值，所以我们需要检索它，并使用with函数将其作为参数发送给视图，因此基本上，您的ProductsController @ create将会像这样：

public function create(Request $request) 
{
  // all your code ... 
  return view ('products.create')->with("data",$datas)->with("client_id",$request->client_id);
}

所以现在，我们从视图中访问此值，对吗？想法是将此值添加为产品表单上的隐藏输入！（像这样）

<form>
  <!-- other inputs .... -->
  <input type="hidden" value="{{$client_id}}" name="client_id" />
</form>

提交表单后，此路线将称为：

Route::post('/products/{client_id}', 'ProductsController@store')->name('products.store');

由于client_id将通过表单发送，而不使用链接，因此，将路线更改为

Route::post('/products', 'ProductsController@store')->name('products.store');

现在，我们只需使用

就可以访问存储功能上的值

$client_id = $request->input('client_id')

Answer 2

这是一种可行的替代解决方案：

路线：

Route::get('/products/{client_id}/create', 'ProductsController@create')-name('products.create');
Route::post('/products', 'ProductsController@store')->name('products.store');

产品控制器的创建功能：

public function create() //keep as in the original question
{
  // all your code ... 
  return view ('products.create')->with("data",$datas)->with("client_id",$request->client_id);
}

在视图中：

<form>
  <!-- other inputs .... -->
  <input type="hidden" value="{{Request::segment(2)}}" name="client_id" /> //access the URL segmment 2 which correspond to the client_id
</form>

在产品控制器存储功能中：

$client_id = $request->input('client_id')

像这样直接在存储函数中使用Request :: segment（2）会很好，但是这会触发“非静态方法Illuminate \ Http \ Request :: segment（）我无法解决的“静态调用”错误。我不需要这个答案，但是无论如何，还是会得到提示的。如果这个问题尚未解决，我可能会发布一个新问题。

Laravel-多种表单/表格-携带URL中的变量来填充表格列

2 个答案: