Zero-value time.Time in gqlgen

[Mohsina11]

While working with GraphQL queries in gqlgen,I have observed the following behavior for Datetime fields:
In Go, a *time.Time field can have a zero value (0001-01-01 00:00:00 UTC).
when gqlgen marshals the field for GraphQL clients (e.g., Apollo), the field is returned as null.

This is due to gqlgen’s default MarshalTime function for the graphql.Time scalar

gqlgen/graphql/time.go

Line 11 in 9da91b3

if t.IsZero() {

Questions:

1. Why does gqlgen treat zero-value time.Time as null by default?
2. Are there scenarios where returning null is preferred over sending "0001-01-01T00:00:00Z"?
3. If I want to preserve zero-value timestamps (so the client receives "0001-01-01T00:00:00Z" instead of null), what is the recommended approach?
   Should I create a custom scalar?

[UnAfraid]

The default scalar Date/Time implementation handles empty/zero time as null which is useful in most cases
If you want to customize this i would suggest to implement your own DateTime scalar and handle it the way you wish.