construprogress/app/Models/Inspection.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Inspection extends Model
{
    protected $fillable = ['project_id', 'layer_id', 'feature_id', 'template_id', 'user_id', 'data'];

    protected $casts = ['data' => 'array'];

    public function project()
    {
        return $this->belongsTo(Project::class);
    }

    public function layer()
    {
        return $this->belongsTo(Layer::class);
    }

    public function template()
    {
        return $this->belongsTo(InspectionTemplate::class);
    }

    public function user()
    {
        return $this->belongsTo(User::class);
    }

    public function feature()
    {
        return $this->belongsTo(Feature::class, 'feature_id');
    }
}