Laravel分离错误的id

Question

我正在用laravel构建一个微型电子商务，我在分离购物车中添加的元素时遇到了问题。我将解释:例如，如果我在购物车中添加了4个元素，当我在购物车中添加的最后一个元素上单击“移除元素”时，最后一个元素不会被删除，但反之亦然，我添加的第一个元素也会被删除。这是我在laravel中的Controller文件：

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Auth;
use App\Computer;
use App\Smartphone;

class FrontController extends Controller
{

public function cart() 
{
    $computers = Computer::all();
    $smartphones = Smartphone::all();

    return view('cart',compact('computers', 'smartphones'));
}

public function computers() 
{
    $computers = Computer::all();

    return view('computers',compact('computers'));
}

public function smartphones() 
{
    $smartphones = Smartphone::all();

    return view('smartphones',compact('smartphones'));
}

public function addpc($id)
{
    $user = Auth::user();
    if(!$user)
    return redirect('/login');
    $user->computers()->attach($id);
    return redirect(route('cart'));
}
public function removepc($id2)
{
    $user = Auth::user();
    if(!$user)
    return redirect('/cart');
    $user->computers()->detach($id2);
    return redirect(route('cart'));
}

public function addsmartphone($id3)
{
    $user = Auth::user();
    if(!$user)
    return redirect('/login');
    $user->smartphones()->attach($id3);
    return redirect(route('cart'));
}
public function removesmartphone($id4)
{
    $user = Auth::user();
    if(!$user)
    return redirect('/cart');
    $user->smartphones()->detach($id4);
    return redirect(route('cart'));
}

}

这是我的web.php文件：

Route::get('/computers', 'FrontController@computers')->name('computers');

Route::post('/computers{id}/addpc','FrontController@addpc')->name('computers.addpc');

Route::post('/computers{id2}/removepc','FrontController@removepc')->name('computers.removepc');

Route::get('/smartphones', 'FrontController@smartphones')->name('smartphones');

Route::post('/smartphones{id3}/addsmartphone','FrontController@addsmartphone')->name('smartphones.addsmartphone');

Route::post('/smartphones{id4}/removesmartphone','FrontController@removesmartphone')->name('smartphones.removesmartphone');

这是我的smartphones.blade.php文件：

@extends('layouts.app')
@section('content')

<main class="container">

<section class="row justify-content-center">

@foreach($smartphones as $smartphone)

<div class="col-12 col-md-5 my-5">

            <h4 class="card-title text-center">{{$smartphone->name}}</h4>
            <h6>{{$smartphone->description}}</h6>
            <form action="{{route('smartphones.addsmartphone',['id3'=>$smartphone->id])}}" method="POST">
            @csrf 
            <button class="btn btn-success my-1" type="submit">Add to cart!</button>
            </form>
          </div>

</div>

@endforeach

</section>

</main>

@endsection

这是我的computers.blade.php文件：

@extends('layouts.app')
@section('content')

<main class="container">

<section class="row justify-content-center">

@foreach($computers as $computer)

<div class="col-12 col-md-5 my-5">

     <h4 class="card-title text-center">{{$computer->name}}</h4>
     <h6>{{$computer->description}}</h6>
     <form action="{{route('computers.addpc',['id'=>$computer->id])}}" method="POST">
     @csrf 
     <button class="btn btn-success my-1" type="submit">Add to cart!</button>
     </form>
     </div>

</div>

@endforeach

</section>

</main>

@endsection

这是我的cart.blade.php文件：

@extends('layouts.app')
@section('content')

<main class="container">

<section class="row justify-content-center">

@php
$total = 0;
@endphp

@foreach(Auth::user()->computers()->get() as $computer)

<div class="col-12 col-md-4">

<h2 class="text-center">{{$computer->name}}</h2>
<form action="{{route('computers.removepc',['id2'=>$computer->id])}}" method="POST">
@csrf 
<center><button class="btn btn-danger mb-5" type="submit">Remove</button></center>
<p class="text-center">Price: {{$computer->price}}</p>

@php
$total+= $computer->price
@endphp

</div>

@endforeach


</section>

</main>

<main class="container">

<section class="row justify-content-center">


@foreach(Auth::user()->smartphones()->get() as $smartphone)

<div class="col-12 col-md-4">

<h2 class="text-center">{{$smartphone->name}}</h2>
<form action="{{route('smartphones.removesmartphone',['id4'=>$smartphone->id])}}" method="POST">
@csrf 
<center><button class="btn btn-danger mb-5" type="submit">Remove</button></center>
<p class="text-center">Price: {{$smartphone->price}}</p>

@php
$total+= $smartphone->price
@endphp

</div>

@endforeach


</section>

</main>

<main class="container">

<section class="row justify-content-center">
<h1>Total: {{$total}} €</h1>
</section>

</main>

@endsection

我希望我已经解释清楚了，谢谢你的帮助！

Answer 1

你需要关闭你的表单，对于每个类别，在循环中。