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laravel-5.7 - Laravel - 多个表单/表格 - 在 URL 中携带变量以填充表格列

问题描述

我对编码和 Laravel（使用 5.7）很陌生。我了解如何创建一个基本的单页表单来填充数据库中的表，包括 relashionship 和身份验证，但我很难达到下一个层次。 我要设计的应用程序将有多个表单和表格，我无法弄清楚如何将从第一个表单收集的信息链接到下一个表单。

让我们考虑一个数据库： - 一个客户表（通过表单页面 A 填充）例如：一个字段是 client_id 字段。- 产品表（通过表单页面 B 填充） - （最终它们会更多）

当用户（例如分析客户行为的公司的员工）完成填写表单页面 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 Next 按钮应该： - 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，在 URL 中携带 client_id（URL：/products/ {client_id}/create，GET 方法：Productscontroller@create，查看 products.create.blade.php）。

在 Product 表中，我有一个 client_id 列，并且我在 Clients 和 Products 模型之间有一对多的关系。

提交表单 B 后，我想从 URL 中检索 {client_id} 以填充 Product 表的 client_id 列，但我被困在这里。我将不胜感激指导和建议。为了简化学习过程，我认为客户只购买一种产品。

主要问题是： - 如何从 products.create.blade.php 视图的 URL 中检索 {client_id} 参数以将其注入客户端视图（已经尝试了很多事情，从回答 stackoverflow 中的类似问题）也: - 我使用正确的方法吗？有什么建议/建议吗？

额外的问题有点超出范围： - 关于如何为产品实施添加/删除字段的任何提示？

网络路由文件：

> <?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');

客户端控制器：

<?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 = 那是我被卡住了 + 不确定这是否是正确的方法

<?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'); 

    }

标签： laravel-5.7

解决方案

我们的解决方案将从查看这条路线开始：

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

这是包含我们要检索的您的 client_id 的路由，并且由于该值在链接上，我们可以使用 Request 对象来访问它！

就像我说的，$request 对象已经包含 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到视图，所以基本上你的 ProductsController@create 将是这样的：

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，我们从我们的视图中访问这个值对吗？这个想法是将此值添加为产品表单上的隐藏输入！（像这样的东西）

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

提交表单后，将调用此路由：

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，因此最好将路由更改为

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

现在，我们可以通过使用来访问我们在 store 函数中的值

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

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