Parse and validate custom time format

[mxp7064]

Hi, is there a way to parse and validate custom time format? For example, I want a query parameter which doesn't have to have a timezone, like: 2022-05-07T12:45:13

Thanks in advance!

[ggicci]

Hi @mxp7064, here I'd like to talk about two cases:

1. All your code/apis are receiving time parameters without timezone, or more generally speaking, in one format.

We could replace the builtin time.Time type decoder with a custom one. See:

• Default time.Time type decoder implementation: https://github.com/ggicci/httpin/blob/v0.9.0/internal/decoders.go#L173
• httpin.ReplaceTypeDecoder
• Example code: https://github.com/ggicci/httpin/blob/v0.9.0/decoder_test.go

2. In you project, different apis have different formats.

Currently, httpin's decoder interface doesn't support specifying extra parameters like "format". So it's not possible to achieve this.

However, there's a tricky way to handle this. Please take a look at the implementation of the builtin time.Time decoder, you may try different formats to parse the input value.

[ggicci]

BTW, the original implementation of the builtin time.Time type decoder also can be enhanced by trying several commonly used time formats. @ggicci

[ggicci]

@ggicci Think about using httpin.NewInput(...) to apply a custom type decoder by adding an optional parameter.

[ggicci]

Hi @mxp7064, I've introduce a special decoder directive in [email protected]. Take a look and I think this would help you.

Documentation: https://ggicci.github.io/httpin/directives/decoder

If it solved your problem, could you please close this issue?

[ggicci]

@ggicci Think about using httpin.NewInput(...) to apply a custom type decoder by adding an optional parameter.

It would be more helpful if we can allow overriding the decoder for each field in the struct.