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Integrate databases with Salvo using SQLx, Diesel, SeaORM, or other ORMs. Use for persistent data storage and database operations.
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| name | salvo-database |
| description | Integrate databases with Salvo using SQLx, Diesel, SeaORM, or other ORMs. Use for persistent data storage and database operations. |
| version | 0.89.3 |
| tags | ["data","database","sqlx","seaorm","diesel"] |
This skill helps integrate databases with Salvo applications.
[dependencies]
salvo = "0.89.3"
sqlx = { version = "0.8", features = ["runtime-tokio", "postgres", "macros"] }
tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
serde = { version = "1", features = ["derive"] }
use salvo::prelude::*;
use salvo::affix_state;
use sqlx::PgPool;
#[tokio::main]
async fn main() {
let pool = PgPool::connect("postgres://user:pass@localhost/db")
.await
.expect("Failed to connect to database");
let router = Router::new()
.hoop(affix_state::inject(pool))
.get(list_users);
let acceptor = TcpListener::new("0.0.0.0:8080").bind().await;
Server::new(acceptor).serve(router).await;
}
use salvo::prelude::*;
use sqlx::{FromRow, PgPool};
use serde::Serialize;
#[derive(FromRow, Serialize)]
struct User {
id: i64,
name: String,
email: String,
}
#[handler]
async fn list_users(depot: &mut Depot) -> Result<Json<Vec<User>>, StatusError> {
let pool = depot.obtain::<PgPool>()
.ok_or_else(|| StatusError::internal_server_error())?;
let users = sqlx::query_as::<_, User>("SELECT id, name, email FROM users")
.fetch_all(pool)
.await
.map_err(|_| StatusError::internal_server_error())?;
Ok(Json(users))
}
#[handler]
async fn create_user(body: JsonBody<CreateUser>, depot: &mut Depot) -> Result<StatusCode, StatusError> {
let pool = depot.obtain::<PgPool>()
.ok_or_else(|| StatusError::internal_server_error())?;
let user = body.into_inner();
sqlx::query("INSERT INTO users (name, email) VALUES ($1, $2)")
.bind(&user.name)
.bind(&user.email)
.execute(pool)
.await
.map_err(|_| StatusError::internal_server_error())?;
Ok(StatusCode::CREATED)
}
#[handler]
async fn get_user(req: &mut Request, depot: &mut Depot) -> Result<Json<User>, StatusError> {
let pool = depot.obtain::<PgPool>()
.ok_or_else(|| StatusError::internal_server_error())?;
let id = req.param::<i64>("id")
.ok_or_else(|| StatusError::bad_request())?;
let user = sqlx::query_as::<_, User>("SELECT id, name, email FROM users WHERE id = $1")
.bind(id)
.fetch_optional(pool)
.await
.map_err(|_| StatusError::internal_server_error())?
.ok_or_else(|| StatusError::not_found())?;
Ok(Json(user))
}
[dependencies]
salvo = "0.89.3"
sea-orm = { version = "1.0", features = ["sqlx-postgres", "runtime-tokio-native-tls", "macros"] }
tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
use salvo::prelude::*;
use salvo::affix_state;
use sea_orm::{Database, DatabaseConnection};
#[tokio::main]
async fn main() {
let db = Database::connect("postgres://user:pass@localhost/db")
.await
.expect("Failed to connect");
let router = Router::new()
.hoop(affix_state::inject(db))
.get(list_users);
let acceptor = TcpListener::new("0.0.0.0:8080").bind().await;
Server::new(acceptor).serve(router).await;
}
use salvo::prelude::*;
use sea_orm::*;
#[handler]
async fn list_users(depot: &mut Depot) -> Result<Json<Vec<user::Model>>, StatusError> {
let db = depot.obtain::<DatabaseConnection>()
.ok_or_else(|| StatusError::internal_server_error())?;
let users = user::Entity::find()
.all(db)
.await
.map_err(|_| StatusError::internal_server_error())?;
Ok(Json(users))
}
#[handler]
async fn create_user(body: JsonBody<CreateUser>, depot: &mut Depot) -> Result<StatusCode, StatusError> {
let db = depot.obtain::<DatabaseConnection>()
.ok_or_else(|| StatusError::internal_server_error())?;
let data = body.into_inner();
let user = user::ActiveModel {
name: Set(data.name),
email: Set(data.email),
..Default::default()
};
user.insert(db).await
.map_err(|_| StatusError::internal_server_error())?;
Ok(StatusCode::CREATED)
}
[dependencies]
salvo = "0.89.3"
diesel = { version = "2.2", features = ["postgres", "r2d2"] }
tokio = { version = "1", features = ["macros", "rt-multi-thread"] }
use salvo::prelude::*;
use salvo::affix_state;
use diesel::r2d2::{self, ConnectionManager};
use diesel::PgConnection;
type DbPool = r2d2::Pool<ConnectionManager<PgConnection>>;
#[tokio::main]
async fn main() {
let manager = ConnectionManager::<PgConnection>::new("postgres://user:pass@localhost/db");
let pool = r2d2::Pool::builder()
.build(manager)
.expect("Failed to create pool");
let router = Router::new()
.hoop(affix_state::inject(pool))
.get(list_users);
let acceptor = TcpListener::new("0.0.0.0:8080").bind().await;
Server::new(acceptor).serve(router).await;
}
use salvo::prelude::*;
use diesel::prelude::*;
#[handler]
async fn list_users(depot: &mut Depot) -> Result<Json<Vec<User>>, StatusError> {
let pool = depot.obtain::<DbPool>()
.ok_or_else(|| StatusError::internal_server_error())?
.clone();
let users = tokio::task::spawn_blocking(move || {
let mut conn = pool.get().map_err(|_| ())?;
use crate::schema::users::dsl::*;
users.load::<User>(&mut conn).map_err(|_| ())
})
.await
.map_err(|_| StatusError::internal_server_error())?
.map_err(|_| StatusError::internal_server_error())?;
Ok(Json(users))
}
#[handler]
async fn transfer_funds(body: JsonBody<Transfer>, depot: &mut Depot) -> Result<StatusCode, StatusError> {
let pool = depot.obtain::<PgPool>()
.ok_or_else(|| StatusError::internal_server_error())?;
let transfer = body.into_inner();
let mut tx = pool.begin().await
.map_err(|_| StatusError::internal_server_error())?;
sqlx::query("UPDATE accounts SET balance = balance - $1 WHERE id = $2")
.bind(transfer.amount)
.bind(transfer.from_account)
.execute(&mut *tx)
.await
.map_err(|_| StatusError::internal_server_error())?;
sqlx::query("UPDATE accounts SET balance = balance + $1 WHERE id = $2")
.bind(transfer.amount)
.bind(transfer.to_account)
.execute(&mut *tx)
.await
.map_err(|_| StatusError::internal_server_error())?;
tx.commit().await
.map_err(|_| StatusError::internal_server_error())?;
Ok(StatusCode::OK)
}
use salvo::prelude::*;
use sqlx::{FromRow, PgPool};
use serde::{Deserialize, Serialize};
#[derive(FromRow, Serialize)]
struct User {
id: i64,
name: String,
email: String,
}
#[derive(Deserialize)]
struct CreateUser {
name: String,
email: String,
}
#[handler]
async fn list_users(depot: &mut Depot) -> Result<Json<Vec<User>>, StatusError> {
let pool = depot.obtain::<PgPool>()
.ok_or_else(|| StatusError::internal_server_error())?;
let users = sqlx::query_as::<_, User>("SELECT id, name, email FROM users")
.fetch_all(pool)
.await
.map_err(|_| StatusError::internal_server_error())?;
Ok(Json(users))
}
#[handler]
async fn create_user(body: JsonBody<CreateUser>, depot: &mut Depot) -> Result<StatusCode, StatusError> {
let pool = depot.obtain::<PgPool>()
.ok_or_else(|| StatusError::internal_server_error())?;
let user = body.into_inner();
sqlx::query("INSERT INTO users (name, email) VALUES ($1, $2)")
.bind(&user.name)
.bind(&user.email)
.execute(pool)
.await
.map_err(|_| StatusError::internal_server_error())?;
Ok(StatusCode::CREATED)
}
#[tokio::main]
async fn main() {
let pool = PgPool::connect("postgres://user:pass@localhost/db")
.await
.expect("Failed to connect");
let router = Router::new()
.hoop(affix_state::inject(pool))
.push(
Router::with_path("users")
.get(list_users)
.post(create_user)
);
let acceptor = TcpListener::new("0.0.0.0:8080").bind().await;
Server::new(acceptor).serve(router).await;
}
affix_state::inject() for dependency injectiondepot.obtain::<T>() to retrieve injected statespawn_blocking for sync database operations (Diesel)