Using laravel 5.3, there is a problem with the @if judgment in the view below:
When the user has no articles, the content in @if will still be executed instead of the content in @else, that is, " "There are articles", is $articles!= null in the view written incorrectly?
Controller:
$user=\Auth::user();
$articles = $user->articles;
return view('articles.index', compact('articles'));view:
@if ($articles!= null)
<p>有文章</p>
@else
<p>没有文章</p>
@endif
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Already using 5.3?
Collection has an isEmpty method to determine whether the Collection is empty. You should be able to use $articles->isEmpty() to judge.
See the official API documentation for details: https://laravel.com/api/5.0/I...
Introduction in official documentation:
I haven’t used laravel 5.3 yet
But the returned collection cannot be judged by Null
Because even if it is empty, it will return the collection object
You can use $articles->count() or $articles->first()