I have 3 models - Standard, Product, and ProductStandard.

Standards represents some standardization document.
Product represents some product.
ProductStandard is the intermediary table having 2 FKs (Standard and
Product) as well as some extra fields (like comments about the
Standard for the specific Product - it's not important, I just try to
explain why we need this table).
So, we have the m2m relation trough the intermediary table.

We can use GET parameters for filtering in the products list, like
/?title="product_title"&company__foundation_date__lte="2009-12-01"

I need the query of such type for the following filter:
"Get all the products that have the relation with the specific
standard", which means:
"There's record in the product.productstandard_set, where
standard=='specific_standard_id'"

Is it possible?

Thanks in advance!

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