How to make go decoding/unmarshalling api set zero value instead of returning error?

samadadi · January 12, 2018, 9:22am

Suppose, i have a struct with field of int. If i send a json string from client side to server and if this filed contains some characters instread of digits, go causes an error while decoding/unmarshalling json string. so how to make go set zero value instead of causing an error.

Struct Example:

type Form struct {
    Age int
}

Json string:

{"Age": "23abc"}

lutzhorn · January 12, 2018, 9:26am

Can you give an example how such invalid JSON looks like?

calmh · January 12, 2018, 9:32am

Two options that come to mind are json.Number (which is essentially a string) and a custom unmarshaller:

https://play.golang.org/p/eFSiBZDFrNS

samadadi · January 12, 2018, 9:42am

Cool. Thank you.

lutzhorn · January 12, 2018, 9:44am

BTW, this post has the nice ID 7777. Let’s go for 8888

system · April 12, 2018, 9:44am

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