需要检查laravel中的对象是否为空

Question

I create a view by doing an eloquent query and then pass it over to Blade.

@if($contacts != null)
//display contacts
@else
You dont have contacts
@endif

However it always assume that $contacts has something even if the query gives me nothing.

I did dd($contacts) and get:

Collection {#247 ▼
  #items: []
}

How do I check if it is empty?

Answer 1

If it is a Eloquent Collection as it appears to be from your example you can use the isEmpty collection helper function;

@if(!$contacts->isEmpty())
//display contacts
@else
You dont have contacts
@endif

Collections Documentation

Answer 2

There are few ways:

if (!empty($contacts))

if (!contacts->isEmpty())

if (count($contacts) > 0)

if ($contacts->count() > 0)

Answer 3

Your Eloquent query returns an array of result, so you can use count .

@if(count($contacts) > 0)
//Display contacts
@else
//No contacts
@endif

Answer 4

Your $contacts is empty. Bcoz Your query is unable to get data. Once your query unable to get data it's return an empty arrya. So check it

    @if($contacts->isEmpty())
    {{ 'Empty' }} 
    @else
   {{ 'you have data' }}
    @endif

Answer 5

You can use blank($contacts)
Helpers Laravel: blank

Answer 6

You must do the following:

in the view of your " ContactController ":

public function index()
{
   $contacts = Contact::all();
   return view('page.index', compact('contacts'))
}

later on view " index.blade.php ":

@if (collect($contacts)->isEmpty()) {{-- remember that $contact is your variable --}}
   <p>There is no record available at this time</p>
@else
   @foreach($contacts as $contact)
      {{$contact->name_contact}}
   @endforeach
@endif

Now, I suppose you have a model called Contact

Answer 7

if(count($profiles) > 0){
            return redirect()->action('NameController@name');
        }else{
            return view('user');
        }

this also works fine in a controller

Answer 8

i added method as global in my helper class

function isNullOrEmpty($value)
{
    return is_null($value) || empty($value);
}

Answer 9

if it is inside a controller this will help

if(empty($query) {
     //do something
}else{
//do some stuff
}