I have a problem with try to get a property of a column in Laravel

Question

I already know that the problem with this question that I will explain is similar to these other questions.

Trying to get property of non-object

Trying to get property of non-object in laravel 5.4

Trying to get property of non-object in laravel 5.5

But my problem is not the exactly the same problem of those questions or a another similar question.

I have a website about Sale of Cars where I show a table with all customers and the number of cars that each customer has bought, when I click on the button 'See more details...' the web page redirects to another web page that show more details about the selected customer.

On that webpage I have another table that shows the number of cars, the date, the model and the car's brand, that the customer has purchased, and a button that you can add a new car that the customer has bought.

NOTE:I enter in this website as an ADMIN.

When I click on this button to add new cars. I get this error.

ErrorException (E_ERROR) Trying to get property 'id' of non-object (View: C:\xampp\htdocs\car- shopping\resources\views\CarShop\ShowCustomerCarsDetails.blade.php)

The line of code that this message of mistake emphasizes is:

<td>{{$customer->id}}</td>

This is the Table of customer details that appears after I clicked the button (says: see more details...) on the previous page. Before the page ShowCustomerCarDetails.blade.php.

<!--ShowCustomerCarDetails.blade.php-->

<tbody> 
  <tr>


    <td>{{$customer->id}}</td> <!--THIS LINE-->


    <td>{{$customer->name}}</td>
    <td>{{$customer->address}}</td>
    <td>{{$customer->phoneNumber}}</td>

        @if($car->id == $customer->car_id)
            <td>{{$car->model}}</td>
        @endif           
    </tr>
</tbody>

NOTE: The previous page of 'ShowCustomerCarDetails.blade.php' is called, 'ShowCustomersAndCars_index.blade.php' On this webpage I have a table that shows all customers and the number of cars that they have bought, is in this page that I have a button called 'See more details...' that redirect to 'ShowCustomerCarDetails.blade.php'.

And this is the body of the table car that the customer has bought.

<!--At the end of the website 
ShowCustomerCarDetails.blade.php -->

<thead>
  <tr>
     <th>CAR NAME</th>
     <th>CAR MODEL</th>
     <th>CAR PRICE</th>
     <th>CAR YEAR</th>
     <th>PURCHASE DATE</th>
     <th>OWNER</th>
    </tr>

</thead>

<tbody>
    @foreach($date as $carDateBuy)
        @if($customer->id == $carDateBuy->customer_id)
            <tr>
                <td>{{$car->name}}</td>             
                <td>{{$car->model}}</td>
                <td>{{$car->price}}</td>
                <td>{{$car->year}}</td>
                <td>{{$carDateBuy->date}}</td>
                <td>{{$carDateBuy->customer_name}}</td>
            </tr>
        @endif
    @endforeach
</tbody>

NOTE: The Table dates, it fills automatically with customer's information when a customer buys a car.

And the button to add new cars in the same web page.

<div>
  <a href="{{route('NewCars')}}">
    <input type="button" name="AddCars" value="ADD NEW CAR">
  </a>
</div>

And the route in web.php

Route::get('ListCustomersCar/NewCars',['as' => 'NewCars', 'uses' => 'CustomerCarController@createNewCars']); 

The CustomerCarController method createNewCars():

public function createNewCars(){

  return view('customer.NewCars');
}

For more details I add the tables and his relations:

Picture1_Car-Customer

Picture2_Customer-Date1

Picture3_Customer-Date2

What I'm doing wrong in my website? If I'm missing something, I will update this question. Thanks!

Answer 1

If the error is in

ShowCustomerCarDetails.blade.php

then the problem is with the controller (let's call this controller as CustomerController.php for now) and the function (as showCustomerCarDetails()) which is returning the above view file.

So, the possible solution would be to check the controller CustomerController.php and the function showCustomerCarDetails(). Please find below a checklist for debugging the problem,

1. At first, please check if you are getting the $customer variable properly in the showCustomerCarDetails function, by dumping it dd($customer). Here, I am assuming that you know how to get the $customer variable from the Customer model. It's simple like $customer=Customer::findOrFail($id), the $id parameter is the one that was passed via the URL to the controller and the function.
2. Now if you are getting the customer data from the database, then send this variable that is $customer along with the view file using your preferred method, like for example return view('CarShop.ShowCustomerCarsDetails', compact($customer))

I hope it solves the problem and in case of any doubt please don't hesitate to ask :)

Answer 2

You have to pass to the view() function an array with the variables that your view will use, e.g.:

return view('customer.newCars', 
    [
        'customer' => $customer,
        'car' => $car,
        ...
    ]
);

If you want to pass eloquent objects, try:

return view('customer.newCars', compact($customer, $car, ...));