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How do I do multiparameter filter

Jaroslav Horák asked in Rails

I have some sort of e-shop. I have Category model and Product model. Product has some parameters like color, material, price etc.
My question is what approach to use to filter by these parameters and categories.
Best way to include url too to be SEO friendly. Example:
Is there some gem? Or what do you use?

Not sure how you'd get this into a URL, but a very common gem I see for operations like this is ransack:

It generates a SQL query based on whatever the user puts in. It's very fast, but the one drawback is it only works with your database columns.

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