Support alternative struct tags (instead of `url`) about go-querystring HOT 6 OPEN

Hey @willnorris , we need this feature too, we are are working with gin +go-querystring and we have to tag both form and url in all of our params structs. Specifying custom tag for encoding will reduce chances of bugs when not setting both tags, and improve readability to our code. I hope you can reconsider merging #15 .

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Is this still a problem for you, or did you end up working around it?

If it's still a desirable feature, does anyone have pointers to examples of other libraries that do this? #15 does provide an implementation, but I just don't think I've ever seen a library that allows customizing struct tags like this, so would love to see any prior art before making any decisions.

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There IS such kind of scenarios. We now have two:

• Migrate some struct definitions from older ones, such as some struct defined by json tags
• Generate some customized tags different from url query for different internal systems. For example, In system A, we use camel style, but some snake style.

type config struct {
    Username string `sys1:"username"  sys2:"loginname"`
}

However, I prefer passing tag as a runtime parameter instead of pre-binding. Such as:

v, _ := query.ValuesByTag(&conf, "sys1")

from go-querystring.

We have the same use case that would be great to solve using this library.

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We also have a similar use case where we need to form encode a struct that only contains json tags. Unfortunately we do not own the struct definition, and cannot add url tags.

from go-querystring.

If it's still a desirable feature, does anyone have pointers to examples of other libraries that do this? #15 does provide an implementation, but I just don't think I've ever seen a library that allows customizing struct tags like this, so would love to see any prior art before making any decisions.

gorilla/schema implements this in exactly the same way using SetAliasTag both in encoder and decoder.

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