Laravel 8: Check if Record in Database is Empty-CodePudding

Im trying to test when a record is empty or not. Not sure why this isn't working. user_id is my FK. When there is no record I like it to show that it's empty and when it's added to show it's added. I'm manually adding removing a record to test it.

Migration

Schema::create('business_dashboards', function (Blueprint $table) {
            $table->id();
            $table->foreignId('user_id')->constrained()->onDelete('cascade');
            $table->string('business_name');
            $table->string('website');
            $table->timestamps();
        });

Model

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class BusinessDashboard extends Model
{
    use HasFactory;

    protected $fillable = [
        'business_name',
        'website',
    ];

    /**
     * @return \Illuminate\Database\Eloquent\Relations\BelongsTo
     */
    public function userprofile()
    {
        return $this->belongsTo(User::class);
    }
}

Controller

$businessDashboardUserId = BusinessDashboard::where('user_id', null)->first();

    if ($businessDashboardUserId) {
       dd('Is Null');
    } else {
       dd('Not Null');
    }

DB Table

CodePudding user response：

Try with whereNull() and count() for conditional

$businessDashboardUserId = BusinessDashboard::whereNull('user_id')->first();

    if (!$businessDashboardUserId->count()) {
       dd('Is Null');
    } else {
       dd('Not Null');
    }

Or even nicer

if (!BusinessDashboard::whereNull('user_id')->exists()) {
   dd('Is Null');
} else {
   dd('Not Null');
}

CodePudding user response：

Typically one would use Eloquent relationships for this. Your current approach has problems, such as returning BusinessDashboard instances that might be soft deleted, or not ignoring User instances that might be soft deleted.

$businessDashboard = BusinessDashboard::whereDoesntHave('userprofile')->first();

Providing more code might help users understand what you're trying to accomplish, and be able to provide a more complete recommendation.