Reqwest 0.11.1 POST body serialization: Body: From<T> is not satisfied

help
#1

Hi everybody!

I'm having an issue with reqwest v0.11.1, the following won't compile:

pub async fn create_mailjob(&self, job: MailJob) -> Result<bool, reqwest::Error> {
        let response = reqwest::Client::new()
            .post(&self.url)
            .body(&job)
            .send()
            .await?;
         response.json::<bool>().await
    }

With MailJob being:

MailJob struct 
use serde::{Serialize, Deserialize};

#[derive(Serialize, Deserialize)]
pub struct MailJob {
    project_id: String,
    schedule: u16,
    day: DayOfWeek,
    email: String,
    report_data_type: ReportDataType,
}

#[derive(Serialize, Deserialize)]
pub enum ReportDataType {
    ReportA,
    ReportB,
    // etc... only name values
}

#[derive(Serialize, Deserialize)]
pub enum DayOfWeek {
    Sunday,
    Monday,
    // etc ...
}

I get the following error:error[E0277]: the trait bound Body: From<MailJob> is not satisfied

error[E0277]: the trait bound `Body: From<&MailJob>` is not satisfied
  --> src\mailjob.rs:55:54
   |
55 |         let response = Client::new().post(&self.url).body(&job).send().await?;
   |                                                      ^^^^ the trait `From<&MailJob>` is not implemented for `Body`
   |
   = help: the following implementations were found:
             <Body as From<&'static [u8]>>
             <Body as From<&'static str>>
             <Body as From<Response>>
             <Body as From<Vec<u8>>>
           and 2 others
   = note: required because of the requirements on the impl of `Into<Body>` for `&MailJob`

I checked with cargo tree that reqwest uses the same versions both for serde and serde_json that I'm using, and made sure the json and derive features are enabled for reqwest and serde respectively.

Since MailJob is a rather lightweight struct, I'm not sure what I'm doing wrong.

I'd appreciate some help from the community :slight_smile:

#2

It's .json(&job), not .body(&job).

https://docs.rs/reqwest/0.11.1/reqwest/struct.RequestBuilder.html#method.json

1 Like
#3

...and now I realized that .body(&job) should instead have been .json(&job).
In my defence, they're both 4-characters long :sweat_smile:

Hope this help anybody else having the same duh moment in the future. Thanks anyway!

#4

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