belongsTo(Product::class); } public function coupon() { return $this->hasMany(Coupon::class); } public function fav() { return $this->hasOne(UserFav::class); } public function agent() { return $this->belongsTo(Agent::class); } public function category() { return $this->belongsTo(Category::class); } public function user() { return $this->hasOne(User::class, 'id', 'verifier'); } public function item() { return $this->hasMany(AgentProductItem::class); } public function setChannelIdAttribute($value) { if (is_array($value)) { $this->attributes['channel_id'] = join(',', array_filter($value)); } } public function setProductIdsAttribute($value) { if (is_array($value)) { $this->attributes['product_ids'] = join(',', array_filter($value)); } } }