Make controller available to serialize/deserialize QPs about ember-parachute HOT 5 CLOSED

this might be possible... I'll whip something up when I wake up

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@mwpastore although this would be nice to have, query param serialization / deserialization can happen before the controller is even created so I dont believe this would be currently possible.

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I had a bit of a think about this, and it seems to me like the issue is really about where this kind of validation of query params should live. In my mind, the serialize / deserialize functions are purely for presentation of the query parameter in the URL only. Validation or other business logic should happen before the value is set on the controller. In your case, you should be validating the item's index in the array before setting the value.

Does that make sense? @mwpastore

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@poteto Thanks for your thoughts and work on this. I understand what you're saying and basically agree, but if a user first browses to the site with e.g. ?index=3, ideally there would be a way to sanity check that index against the array it's selecting into. Perhaps that's an argument for having a separate setter function in the controller instead of enhancing the deserialize QP function. Either way it would be good to figure out and document this use case.

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@mwpastore the idea behind the serialize/deserialize is not to do any business logic but only to format how it should look in the URI. The business logic should be done before setting the query parameter in the first place.

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