此集合实例上不存在属性 [vegan]。 Laravel

Question

I'm trying to show a title based on whether a specific column in my table is 1 or 0. In my Controller I have (edited out some irrelevant code):

 public function show(Company $id){

        $vegan = Company::find($id);
        $vegetarian = Company::find($id);

        return view('allProducts')->with([

            'vegan' => $vegan,
            'vegetarian' => $vegetarian,
        ]);
    }

and in my view:

  @if($vegan->vegan == 1)
    <h3 class="text-center">Vegan</h3>
  @endif

However I get error message

ErrorException (E_ERROR)
Property [vegan] does not exist on this collection instance. (View: C:\xampp\htdocs\EdenBeauty\resources\views\allProducts.blade.php)

Ive tried the following but I get errors every time:

@if($vegan[0]->vegan == 1)

This gives undefined offset errors

Answer 1

The problem is you're missing first() after your queries:

$vegan = Company::find($id)->first();
$vegetarian = Company::find($id)->first();

Answer 2

In this line, you're injecting a Company into your show method via URL parameter:

public function show(Company $id){ ... }

At that point, $id is either a Company instance or null . Calling $vegan = Company::find($id) doesn't make any sense, and I'm actually surprised you don't get an error at that point in the code.

Also, if you're using injection, name the variable correctly Company $company to avoid confusion, and reference later:

public function show(Company $company){
  $vegan = $company;
  $vegetarian = $company;
  // Or `$vegan = Company::find($company->id);`
  // (This is redundant, but demonstrates the syntax)

  return view("...")->with(...);
}

Alternatively, remove injection and query:

public function show($id){
  $vegan = Company::find($id); // Note can use use `firstOrFail()`, etc.
  $vegetarian = Company::find($id);     
  ...
}

Either way, find() does not return a Collection , so $vegan->vegan would not return "Property [vegan] does not exist on this collection instance.", but something about your usage is treating it that way.