Hello @maximos

If I understand your models correctly the additional fields that you want are requirements for the discount.

I should advice to create a model DiscountRequirement that contains the needed key/values. (And if you don't like that you can use a json column but I personal don't prefer that because you are missing the normalized value from your database)

If you want more validation you can also create a Discount type with required fields but I don't know if that is needed/wanted in your case.

Please tell me if it is clear or that you have more questions :)

And maybe you can write out a diagram to get a visible picture and documentation in one action. (like with mermaid, that is text that you can transform to an image) https://mermaid.js.org/syntax/entityRelationshipDiagram.html

Thanks) I created custom pivot model and store additional fields for birthday discount in field birthday:

class DiscountPlace extends Pivot
{
    protected $casts = [
        'birthday' => 'object'
    ];
}