Issue with DateTime in Rust with juniper and chrono

Question

I've got the problem, that I have a graphQL query, with a DateTime and cannot use it with juniper.

At the documentation they write that they have the scalar type feature chrono::DateTime build in by default. So I pub imported the DateTime from chrono. Now I have the Error:

wrong number of type arguments: expected 1, found 0 expected 1 type argument

The code:

use chrono::DateTime;
pub struct ProjectDate;
pub mod project_date {    
    use serde::{Deserialize, Serialize};
    #[doc = "An ISO-8601 encoded UTC date string."]
    type DateTime = super::DateTime;

I use juniper = "^0.14.2" and chrono = "0.4.0"

Any idea, what I am doing wrong?

Answer 1

The solution was the serde feature at chrono and the DateTime<Utc> from @Netwave.

chrono = { version = "^0.4.13", features= ["serde"] }

and

pub type DateTime = chrono::DateTime<chrono::Utc>;