working example with write and select

src/lib.rs

@@ -1,25 +1,23 @@
 use diesel::prelude::*;
 use dotenvy::dotenv;
 use std::{env};
-use std::io::{stdout, Write};
+use diesel::r2d2::{ConnectionManager, Pool};
 
 pub mod models;
 pub mod schema;
+pub mod routes;
+pub mod handlers;
 
-pub fn establish_connection() -> PgConnection {
+pub type DbPool = Pool<ConnectionManager<PgConnection>>;
+
+pub fn create_pool() -> DbPool {
     dotenv().ok();
 
-    // let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
-    // let database_name = env::var("DATABASE_NAME").expect("DATABASE_NAME must be set");
-    // let database_user = env::var("DATABASE_USER").expect("DATABASE_USER must be set");
-    // let database_password = env::var("DATABASE_PASSWORD").expect("DATABASE_PASSWORD must be set");
-
-    // let connection_url= format!("postgres://{}:{}@{}/{}", database_user, database_password, database_url, database_name);
-    
     let database_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
 
-    println!("{}", database_url);
+    let manager = ConnectionManager::<PgConnection>::new(database_url);
 
-    PgConnection::establish(&database_url)
-        .unwrap_or_else(|_| panic!("Error connecting to {}", database_url))
+    Pool::builder()
+        .build(manager)
+        .expect("Failed to create DB pool")
 }