Combine two HasMany's with same relation

[johanmolen]

Hello all!

Does somebody know how to combine these two HasMany's to a where with an or statement?

class Product extends Model
{
    public function productPriceAgreements(): HasMany
    {
        return $this->hasMany(
            PriceAgreement::class,
            'product_external_id',
            'external_id'
        );
    }

    public function categoryPriceAgreements(): HasMany
    {
        return $this->hasMany(
            PriceAgreement::class,
            'category_external_id',
            'category_external_id'
        );
    }
}

Thanks in advance <3