How to get the product collection based on catalog & cart price rules?

Question

I am trying to get all products based on catalog price rules and cart price rules under all categories which is valid for today's date in Magento 2

Answer 1

For catalog rule, if you look at vendor/magento/module-catalog-rule/Model/Rule

You will find method getMatchingProductIds() which return an array of all matching products for a particular rule.

So load the rule Model by using rule id by object manager or constructor injection and call getMatchingProductIds() method. Hope it works.