Gin: Binding failed on int required field when value is 0

[lennon-guan]

my form struct is like this:

type XXX struct {
  Offset int `binding:"required"`
}

And my test case is like this:

curl http://127.0.0.1:8080/xxx?offset=0

[douglarek]

You need a form:"offset" tag:

type XXX struct {
  Offset int `form:"offset" binding:"required"`
}

[deankarn]

Is there an error, or is it just passing validation when you would expect it too?

If it's the latter then offset will always exist due to go's a static nature, but could use a pointer to integer and use the "exists" tag instead of "required" more details can be found https://github.com/go-playground/validator/issues/225 even though it's about bool, the same principal applies.

[appleboy]

ref: https://godoc.org/gopkg.in/go-playground/validator.v8#hdr-Exists

https://github.com/gin-gonic/gin/issues/690

[youaresherlock]

I came across the same problem, got it!