Successfully added an insert query with diesel.

Cargo.toml

@@ -10,6 +10,7 @@ dotenv = "0.15.0"
 serde = { version = "1.0", features = ["derive"] }
 tokio = { version = "1", features = ["full"] }
 #sqlx = { version = "0.5", features = [ "runtime-tokio-rustls", "mysql" ] }
-diesel = { version = "1.4.4", features = ["mysql"] }
+diesel = { version = "1.4.4", features = ["mysql", "chrono"] }
+diesel_migrations = { version = "1.4.0"}
 actix-web = "4"
 chrono = "0.4"

diesel.toml

@@ -0,0 +1,5 @@
+# For documentation on how to configure this file,
+# see diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"

migrations/mysql/down.sql

@@ -0,0 +1,2 @@
+-- This file should undo anything in `up.sql`
+DROP TABLE user

migrations/mysql/up.sql

@@ -0,0 +1,5 @@
+-- Your SQL goes here
+CREATE TABLE IF NOT EXISTS user (
+  id INT AUTO_INCREMENT PRIMARY KEY,
+  name VARCHAR(255) NOT NULL
+)

src/dao/main_dao.rs

@@ -2,7 +2,9 @@ use std::collections::HashMap;
 
 use diesel::{MysqlConnection, Connection, ConnectionError};
 
-pub async fn start_database_connection(env_vars: &HashMap<String, String>) -> Result<MysqlConnection, ConnectionError>{
+use crate::embedded_migrations;
+
+pub fn start_database_connection(env_vars: &HashMap<String, String>) -> Result<MysqlConnection, ConnectionError>{
     let db_user = match env_vars.get("DB_USER") {
         Some(str) => str,
         None => panic!("DB_USER env var not found")
@@ -21,4 +23,11 @@ pub async fn start_database_connection(env_vars: &HashMap<String, String>) -> Re
     };
     let formatted_db_url = &format!("mysql://{db_user}:{db_pass}@{db_host}/{db_database_name}");
     MysqlConnection::establish(formatted_db_url)
+}
+pub fn run_all_migrations(conn: &mut MysqlConnection){
+    match embedded_migrations::run(conn){
+        Ok(()) => {println!("{}", "Successfully ran migrations.")}
+        Err(e) => {panic!("Error happened while trying to run migrations Error: {}", e)}
+    }
+    //TODO: log output like this: embedded_migrations::run_with_output(&connection, &mut std::io::stdout());
 }

src/dao/user_dao.rs

@@ -1,9 +1,10 @@
-use crate::r#do::user::User;
+use diesel::prelude::*;
 
-pub async fn _create_user_table_if_not_exists() -> Result<(), ()>{
+use crate::{schema::user, r#do::user::User};
 
-    Ok(())
+pub fn _insert_user(conn: &mut MysqlConnection, user: User) -> Result<usize, diesel::result::Error>{
+    diesel::insert_into(user::table).values(&user).execute(conn)
 }
-pub async fn _insert_user( _user: User) -> Result<(), ()>{
+pub fn _find_user_by_id(_conn: &mut MysqlConnection, _id: i32) -> Result<(), ()>{
     Ok(())
 }

src/do/user.rs

@@ -1,8 +1,11 @@
-use diesel::Queryable;
+use diesel::{Queryable, Insertable};
 use serde::Serialize;
 
-#[derive(Serialize, Queryable)]
+use crate::schema::*;
+
+#[derive(Serialize, Queryable, Insertable)]
+#[table_name = "user"]
 pub struct User{
-    pub id: u16,
+    pub id: i32,
     pub name: String
 }

src/main.rs

@@ -1,11 +1,20 @@
 mod r#do; mod dao; 
 mod routes; mod service;
-mod util;
+mod util; pub mod schema;
 
 use r#do::shared_state::SharedStateObj;
 use util::env_util;
 use routes::main_router::{start_all_routes, after_startup_fn};
-use dao::main_dao;
+use dao::main_dao::{self, run_all_migrations};
+
+//  Include diesel_migrations so embed_migrations! macro can be called.
+#[macro_use]
+extern crate diesel_migrations;
+#[macro_use]
+extern crate diesel;
+//  Run all migrations inside the path
+embed_migrations!();
+
 
 #[tokio::main]
 async fn main() -> Result<(), std::io::Error> {
@@ -14,11 +23,14 @@ async fn main() -> Result<(), std::io::Error> {
     let env_vars = env_util::get_dot_env_map();
     
     //  Start database
-    let db_conn = match main_dao::start_database_connection(&env_vars).await {
+    let mut db_conn = match main_dao::start_database_connection(&env_vars) {
         Ok(conn) => conn,
         Err(e) => panic!("Failure starting the database. Reason: {}", e)
     };
 
+    //  Run all migrations
+    run_all_migrations(&mut db_conn);
+
     //  Put db connection and env variables in shared state
     let shared_state_obj = SharedStateObj {db_conn, env_vars };
 

src/routes/user_routes.rs

@@ -3,10 +3,11 @@ use std::sync::Mutex;
 use actix_web::{get, web::{self, Path, Data}, HttpResponse, post};
 use diesel::MysqlConnection;
 
-use crate::r#do::user::User;
+use crate::{r#do::user::User, dao::user_dao::_insert_user};
 
 #[get("/user/{id}")]
-pub async fn get_user_from_db(id: Path<u16>, _data: Data<Mutex<MysqlConnection>>) -> HttpResponse {
+pub async fn get_user_from_db(id: Path<i32>, _data: Data<Mutex<MysqlConnection>>) -> HttpResponse {
+    _insert_user(&mut _data.lock().unwrap(), User { id: *id, name: "nigga".to_string() });
     HttpResponse::Ok().json(web::Json(User {id: *id, name: "nigga".to_string()}))
 }
 

src/schema.rs

@@ -0,0 +1,6 @@
+table! {
+    user (id) {
+        id -> Integer,
+        name -> Varchar,
+    }
+}