Property missing in laravel - php

Question

I have setup my localhost to new PC. After import the database to phpmyadmin, I run laravel and open the page. However, I got this error:
Trying to get property 'id' of non-object (View: C:\xampp\htdocs\inventoryApp\resources\views\Item\edit.blade.php)
On the other page, I got this error:
Trying to get property 'name' of non-object (View: C:\xampp\htdocs\inventoryApp\resources\views\Item\show.blade.php)
My view code looks like:
<table id="sale-table" class="table table-bordered table-striped table-hover datatable">
<thead>
<tr>
<th>No</th>
<th>Seller</th>
<th>Item ID</th>
<th>Item Name</th>
<th>Quantity</th>
<th>Total Sale</th>
<th>Detail</th>
<th>Action</th>
<th>Action</th>
</tr>
</thead>
<tbody>
#foreach($sales as $sale)
<tr>
<td>{{ $sale->id }}</td>
<td>{{ $sale->user->name }}</td>
<td>{{ $sale->item_id }}</td>
<td>{{ $sale->item->name }}</td>
<td>{{ $sale->quantity }}</td>
<td>RM {{ $sale->price }}</td>
<td>{{ $sale->created_at }}</td>
#if(Auth::user()->type=='admin'||Auth::user()->type=='super_admin')
<td class="center">
<i class="glyphicon glyphicon-edit"></i> EDIT
</td>
<td class="center">
<form action="{{ route('Sale.destroy', ['id'=>$sale->id ]) }}" method="post" onsubmit="return confirm('Delete sale {{ $sale->name }} permanently?')" >
<input type="hidden" name="_method" value="DELETE">
<input type="hidden" name="_token" value="{{ csrf_token() }}">
<button class="btn btn-danger btn-sm" type="submit" ><i class="glyphicon glyphicon-trash"></i> DELETE</button>
</form>
</td>
#else
<td class="center">
<b><p>Only for admin</p></b>
</td>
<td class="center">
<b><p>Only for admin</p></b>
</td>
#endif
</tr>
#endforeach
</tbody>
</table>
My controller is:
class SalesController extends Controller
{
public function index()
{
$sales=Sale::all();
return view('Sale.index')->with('sales',$sales);
}
public function create()
{
$items=Item::all();
return view('Sale.create')->with('items',$items);;
}
public function store(Request $request)
{
$this->validate($request, [
'item_id'=>'required|integer',
//'price'=>'required|regex:/^\d+(\.\d{1,2})?$/',
'quantity'=>'required|integer',
]);
$item=Item::FindOrFail($request->item_id);
$item->quantity -= ($request->quantity);
$sale=new Sale;
$sale->seller_id=$request->get('seller_id');
$sale->item_id=$item->id;
$sale->price=$item->selling_price * $request->input('quantity');
$sale->quantity=$request->input('quantity');
$sale->save();
$item->save();
return redirect('/Sale')->with('success','Sale added');
}
public function edit($id)
{
$sales=Sale::find($id);
return view('Sale.edit')->with('sales',$sales);
}
public function update(Request $request, $id)
{
$this->validate($request, [
//'price'=>'required|regex:/^\d+(\.\d{1,2})?$/',
'quantity'=>'required|integer',
]);
$sale=Sale::find($id);
$item=Item::FindOrFail($sale->item_id);
$item->quantity = $item->quantity + $sale->quantity - $request->quantity;
$sale->quantity=$request->input('quantity');
$sale->price=$item->selling_price * $request->input('quantity');
$item->save();
$sale->save();
return redirect('/Sale')->with('success','Sale updated');
}
public function destroy($id)
{
$sale = Sale::find($id);
$sale->delete();
return redirect('/Sale')->with('success','Sale Removed');
}
}
When I try to add a new item, it works well. But I cannot use the imported one.

Answer 1

Make sure you have id column in your sale table.
and you have create the relationship with your user model and item model in your migration file and sale model.
public function user()
{
return $this->belongsTo(User::class);
}
public function item()
{
return $this->belongsTo(Item::class); // assuming you have named the model "Item" for your item table.
}