如何解决Rust Diesel:特性绑定`NaiveDateTime: Deserialize<'_>` 不满足
我是铁锈和柴油的新手。并尝试使用火箭框架创建一个小型演示 api。
获取错误:特征绑定 NaiveDateTime: Deserialize<'_>
不满足
我用谷歌搜索并找到了一些有用的链接,例如:https://github.com/serde-rs/serde/issues/759
好像是版本有问题。
这是我的文件:
schema.rs
table! {
department (dept_id) {
dept_id -> Int4,dept_name -> Nullable<Text>,created_on -> Nullable<Timestamp>,created_by -> Nullable<Text>,modified_on -> Nullable<Timestamp>,modified_by -> Nullable<Text>,is_active -> Nullable<Bool>,}
}
cargo.toml
[dependencies]
diesel = { version = "1.4.5",features = ["postgres","chrono","numeric"] }
dotenv = "0.15.0"
chrono = { version = "0.4.19" }
bigdecimal = { version = "0.1.0" }
rocket = "0.4.6"
rocket_codegen = "0.4.6"
r2d2-diesel = "1.0.0"
r2d2 = "0.8.9"
serde = { version = "1.0.118",features = ["derive"] }
serde_derive = "1.0.118"
serde_json = "1.0.60"
[dependencies.rocket_contrib]
version = "*"
default-features = false
features = ["json"]
model.rs
#![allow(unused)]
#![allow(clippy::all)]
use super::schema::department;
use serde::Serialize;
use serde::Deserialize;
use chrono::NaiveDateTime;
use bigdecimal::BigDecimal;
#[derive(Queryable,Debug,Identifiable,Serialize,Deserialize)]
#[primary_key(dept_id)]
#[table_name = "department"]
pub struct Department {
pub dept_id: i32,pub dept_name: Option<String>,pub created_on: Option<NaiveDateTime>,pub created_by: Option<String>,pub modified_on: Option<NaiveDateTime>,pub modified_by: Option<String>,pub is_active: Option<bool>,}
main.rs
#[macro_use]
extern crate diesel;
extern crate dotenv;
extern crate serde;
extern crate serde_derive;
extern crate serde_json;
extern crate chrono;
extern crate bigdecimal;
mod models;
mod schema;
mod connection;
fn main() {
println!("Hello,Home!");
}
有人可以帮我吗?
谢谢!
解决方法
您需要在 serde
中的 chrono
中包含 Cargo.toml
功能:
chrono = { version = "0.4",features = ["serde"]}
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