How to filter results by multiple fields?

Posted by hadees on Stack Overflow See other posts from Stack Overflow or by hadees
Published on 2010-05-12T02:10:55Z Indexed on 2010/05/12 2:14 UTC
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ruby-on-rails

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filter

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filtering

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named-scope

I am working on a survey application in ruby on rails and on the results page I want to let users filter the answers by a bunch of demographic questions I asked at the start of the survey.

For example I asked users what their gender and career was. So I was thinking of having dropdowns for gender and career. Both dropdowns would default to all but if a user selected female and marketer then my results page would so only answers from female marketers.

I think the right way of doing this is to use named_scopes where I have a named_scope for every one of my demographic questions, in this example gender and career, which would take in a sanitized value from the dropdown to use at the conditional but i'm unsure on how to dynamically create the named_scope chain since I have like 5 demographic questions and presumably some of them are going to be set to all.

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