Edit file File name : ProductVariation.php Content :<?php namespace App; use Illuminate\Database\Eloquent\Model; class ProductVariation extends Model { /** * The attributes that aren't mass assignable. * * @var array */ protected $guarded = ['id']; public function variations() { return $this->hasMany(\App\Variation::class); } public function variation_template() { return $this->belongsTo(\App\VariationTemplate::class); } } Save