错误：
SQLSTATE [42S22]：未找到列：1054未知列＆＃39; products.id＆＃39;在＆＃39; where子句＆＃39; （SQL：从products中选择{products。id = 1限制1）
我有桌子产品＆＃39;使用＆product;。＆＃39;领域。不知道为什么我收到此错误。我
时出现此错误家庭控制器：
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\User;
class HomeController extends Controller
{
/**
* Create a new controller instance.
*
* @return void
*/
public function __construct()
{
$this->middleware('auth');
}
/**
* Show the application dashboard.
*
* @return \Illuminate\Http\Response
*/
public function index()
{
$user_id = auth()->user()->id;
$user = User::find($user_id);
return view('home')->with('products',$user->products);
}
}
ProductController的：
<?php
namespace App\Http\Controllers;
use Illuminate\Http\Request;
use App\product;
class productController extends Controller
{
/**
* Create a new controller instance.
*
* @return void
*/
public function __construct()
{
$this->middleware('auth',['except' => ['index','show']]);
}
/**
* Display a listing of the resource.
*
* @return \Illuminate\Http\Response
*/
public function index()
{
$products = product::orderBy('created_at','desc')->paginate(10);
//$products = product::where('type','major')->get();
return view('products.index')->with('products',$products);
}
/**
* Show the form for creating a new resource.
*
* @return \Illuminate\Http\Response
*/
public function create()
{
return view('products.create');
}
/**
* Store a newly created resource in storage.
*
* @param \Illuminate\Http\Request $request
* @return \Illuminate\Http\Response
*/
public function store(Request $request)
{
$this->validate($request,[
'title' => 'required',
]);
//create product
$product = new product;
$product->title = $request->input('title');
$product->venue = $request->input('venue');
$product->city = $request->input('city');
$product->country = $request->input('country');
$product->description = $request->input('description');
$product->date = $request->input('date');
$product->user_id = auth()->user()->id;
$product->save();
return redirect('/products')->with('success','product Created');
}
/**
* Display the specified resource.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function show($id)
{
$product = product::find($id);
return view('products.show');
}
/**
* Show the form for editing the specified resource.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function edit($id)
{
$product = product::find($id);
return view('products.edit')->with('product',$product);
}
/**
* Update the specified resource in storage.
*
* @param \Illuminate\Http\Request $request
* @param int $id
* @return \Illuminate\Http\Response
*/
public function update(Request $request, $id)
{
$this->validate($request, [
'title' => 'required'
]);
$product = product::find($id);
$product->title = $request->input('title');
$product->save();
return redirect('/products')->with('success','product updated');
}
/**
* Remove the specified resource from storage.
*
* @param int $id
* @return \Illuminate\Http\Response
*/
public function destroy($id)
{
$product = product::find($id);
$product->delete();
return redirect('/products')->with('success','product deleted');
}
}
Show.blade.php
@extends('layouts.app')
@section('content')
<div class="container">
<h1 class="centre">{{$product->title}}</h1>
<div class="well-xs">
@if(!Auth::guest())
@if(Auth::user()->id == $product->user_id)
<a href="../products/{{$product->id}}/edit" class="btn btn-default">Edit</a>
{!!Form::open(['action' => ['productcontroller@destroy', $product->product_id], 'method' => 'POST'])!!}
{{Form::hidden('_method', 'DELETE')}}
{{Form::submit('Delete', ['class' => 'btn btn-danger'])}}
{!!Form::close()!!}
@endif
@endif
</div>
<div>
<div>
<h4>product Date: {{$product->date}}</h4>
<h4>product Venue: {{$product->venue}}</h4>
<h4>product Location:{{$product->city}}</h4>
<h4>product Description: </h4>
<p>{{$product->description}} </p>
</div>
</div>
<hr>
Written on
</hr>
</div>
@endsection
产品表模式：我在sql中手动添加了user_id。当我尝试单独迁移到add_user_id_to_table
时，迁移不起作用{
Schema::create('products', function (Blueprint $table) {
$table->increments('product_id');
$table->string('title',200);
$table->string('venue',200);
$table->text('city',200);
$table->text('country',200);
$table->string('description');
$table->date('date',200);
$table->timestamps();
});
}
user.php模型：
<?php
namespace App;
use Illuminate\Notifications\Notifiable;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* @var array
*/
protected $fillable = [
'name', 'email', 'password',
];
/**
* The attributes that should be hidden for arrays.
*
* @var array
*/
protected $hidden = [
'password', 'remember_token',
];
public function products(){
return $this->hasMany('App\Product');
}
}
Product.php模型：
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Product extends Model
{
//Table NAME
protected $table = 'products';
//PRIMARY KEY
public $primaryKey = 'id';
//Timestamps
public $timestamps =true;
public function user(){
return $this->belongsTo('App\User');
}
}
答案 0 :(得分：0)
更改用户模型
public function products(){
return $this->hasMany("App\Product","product_id","product_id");
//return $this->hasMany("App\Product","foreign_key","local_key");
}
答案 1 :(得分：0)
修改迁移时，仍需要更新数据库。所以你应该试试
php artisan migrate:fresh
这将删除您的数据库并再次迁移
此外，您无需查询控制器中的当前用户
而不是：
public function index()
{
$user_id = auth()->user()->id;
$user = User::find($user_id);
return view('home')->with('products',$user->products);
}
您可以简单地使用：
public function index()
{
return view('home')->with('products', auth()->user()->products);
}
编辑：
您的产品迁移没有定义名为id的列，而是product_id。
此外，当您在该表上没有该用户的ID时，您在产品中声明了belongsTo关系。
关系belongsTo表示您拥有相关模型的ID。例如
class User extends Model
{
public function posts()
{
return $this->hasMany(App\Post::class);
}
}
class Post extends Model
{
public function user()
{
return $this-belongsTo(App\User::class);
}
}
这是可能的，因为posts表有一个名为user_id的字段。因为帖子属于用户。
您不需要此代码：
//Table NAME
protected $table = 'products';
//PRIMARY KEY
public $primaryKey = 'id';
//Timestamps
public $timestamps =true;
Laravel自动处理所有这些，您正在定义默认值