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proposal: encoding/json: Struct omitempty #58489

PumpkinSeed opened this issue Feb 13, 2023 · 2 comments

proposal: encoding/json: Struct omitempty #58489

PumpkinSeed opened this issue Feb 13, 2023 · 2 comments


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PumpkinSeed commented Feb 13, 2023


The current json package can't handle non-pointer struct encoding alongside with omitempty tag. This means we need to add the structs as pointers. Many of the proposals have been submitted. This is the main ticket dealing with this problem: #11939

I tried to go to an other direction in this proposal, because the major problem with the IsZero, that it's not backward compatible.

Possible solution

I think we need to use the encOpts located in the json/encode.go. By using it we can setup a solution which can handle this problem and just like the SetIndent, it can be called over the Encoder struct.

One possible example can be the SetOmitemptyOnIsZero(b bool), which omitting the value if the IsZero function of the given struct returns true. (Note, the naming conventions isn't good, it's just something for showing the idea.)

Implementation details:

@gopherbot gopherbot added this to the Proposal milestone Feb 13, 2023
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This has been proposed before. See for work on a next generation encoding/json package.

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Duplicate of #19763

@seankhliao seankhliao marked this as a duplicate of #19763 Feb 13, 2023
@seankhliao seankhliao closed this as not planned Won't fix, can't repro, duplicate, stale Feb 13, 2023
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