how to do a jsonb query in rust diesel - postgresql

Question

I am store some tags as a jsonb datatype in PostgreSQL 13, this is the table DDL:
-- Drop table
-- DROP TABLE public.test;
CREATE TABLE public.test (
id int8 NOT NULL GENERATED ALWAYS AS IDENTITY,
tags jsonb NOT NULL,
CONSTRAINT test_pkey PRIMARY KEY (id)
);
now I want to do a query using jsonb in rust diesel diesel = { version = "1.4.7", features = ["postgres","serde_json"] }, this is the rust main.rs:
#[macro_use]
extern crate diesel;
use diesel::pg::types::sql_types::Jsonb;
use diesel::{ExpressionMethods, QueryDsl, RunQueryDsl};
use rocket::serde::Deserialize;
use rocket::serde::Serialize;
use rust_wheel::config::db::config::establish_connection;
pub mod model;
fn main() {
use crate::model::diesel::dict::dict_schema::test::dsl::*;
let connection = rust_wheel::config::db::config::establish_connection();
let predicate = crate::model::diesel::dict::dict_schema::test::tags.eq(serde_json::from_value("value".parse().unwrap()));
let db_admin_user = test.filter(&predicate)
.limit(1)
.load::<Test>(&connection)
.expect("query test failed");
}
#[derive(Queryable,Debug,Serialize,Deserialize,Default)]
pub struct Test {
pub id: i64,
pub tags: serde_json::Value,
}
and this is the schema file:
table! {
test (id) {
id -> Int8,
tags -> Jsonb,
}
}
when I compile the code, shows error like this:
error[E0277]: the trait bound `Result<_, serde_json::Error>: diesel::Expression` is not satisfied
--> src/main.rs:15:76
|
15 | let predicate = crate::model::diesel::dict::dict_schema::test::tags.eq(serde_json::from_value("value".parse().unwrap()));
| -- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `diesel::Expression` is not implemented for `Result<_, serde_json::Error>`
| |
| required by a bound introduced by this call
|
= note: required because of the requirements on the impl of `AsExpression<diesel::sql_types::Jsonb>` for `Result<_, serde_json::Error>`
what should I do to query the record using jsonb data type?