🚧 Initial diesel setup

Cargo.toml

@@ -6,3 +6,6 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+diesel = "2.1"
+diesel-async = {version = "0.4", features = ["postgres"]}
+chrono = { version = "0.4", features = [] }

diesel.toml

@@ -0,0 +1,9 @@
+# For documentation on how to configure this file,
+# see https://diesel.rs/guides/configuring-diesel-cli
+
+[print_schema]
+file = "src/schema.rs"
+custom_type_derives = ["diesel::query_builder::QueryId"]
+
+[migrations_directory]
+dir = "migrations"

migrations/00000000000000_diesel_initial_setup/down.sql

@@ -0,0 +1,6 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+DROP FUNCTION IF EXISTS diesel_manage_updated_at(_tbl regclass);
+DROP FUNCTION IF EXISTS diesel_set_updated_at();

migrations/00000000000000_diesel_initial_setup/up.sql

@@ -0,0 +1,36 @@
+-- This file was automatically created by Diesel to setup helper functions
+-- and other internal bookkeeping. This file is safe to edit, any future
+-- changes will be added to existing projects as new migrations.
+
+
+
+
+-- Sets up a trigger for the given table to automatically set a column called
+-- `updated_at` whenever the row is modified (unless `updated_at` was included
+-- in the modified columns)
+--
+-- # Example
+--
+-- ```sql
+-- CREATE TABLE users (id SERIAL PRIMARY KEY, updated_at TIMESTAMP NOT NULL DEFAULT NOW());
+--
+-- SELECT diesel_manage_updated_at('users');
+-- ```
+CREATE OR REPLACE FUNCTION diesel_manage_updated_at(_tbl regclass) RETURNS VOID AS $$
+BEGIN
+    EXECUTE format('CREATE TRIGGER set_updated_at BEFORE UPDATE ON %s
+                    FOR EACH ROW EXECUTE PROCEDURE diesel_set_updated_at()', _tbl);
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION diesel_set_updated_at() RETURNS trigger AS $$
+BEGIN
+    IF (
+        NEW IS DISTINCT FROM OLD AND
+        NEW.updated_at IS NOT DISTINCT FROM OLD.updated_at
+    ) THEN
+        NEW.updated_at := current_timestamp;
+    END IF;
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;

migrations/2024-01-23-160445_create_rustaceans/down.sql

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

migrations/2024-01-23-160445_create_rustaceans/up.sql

@@ -0,0 +1,7 @@
+-- Your SQL goes here
+CREATE TABLE rustaceans (
+    id SERIAL PRIMARY KEY,
+    name VARCHAR NOT NULL,
+    email VARCHAR NOT NULL,
+    created_at TIMESTAMP DEFAULT NOW() NOT NULL
+)

migrations/2024-01-23-160450_create_crates/down.sql

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

migrations/2024-01-23-160450_create_crates/up.sql

@@ -0,0 +1,10 @@
+-- Your SQL goes here
+CREATE TABLE crates (
+    id SERIAL PRIMARY KEY,
+    rustacean_id integer NOT NULL REFERENCES rustaceans(id),
+    code varchar(64) NOT NULL,
+    name varchar(128) NOT NULL,
+    version varchar(64) NOT NULL,
+    description text,
+    created_at TIMESTAMP DEFAULT NOW() NOT NULL
+)

src/main.rs

@@ -1,3 +1,6 @@
+mod models;
+mod schema;
+
 fn main() {
     println!("Hello, world!");
 }

src/models.rs

@@ -0,0 +1,39 @@
+use chrono::NaiveDateTime;
+use diesel::prelude::*;
+use crate::schema::*;
+
+#[derive(Queryable)]
+pub struct Rustacean {
+    pub id: i32,
+    pub name: String,
+    pub email: String,
+    pub created_at: NaiveDateTime
+}
+
+#[derive(Insertable)]
+#[diesel(table_name=rustaceans)]
+pub struct NewRustacean {
+    pub name: String,
+    pub email: String,
+}
+
+#[derive(Queryable)]
+pub struct Crate {
+    pub id: i32,
+    pub rustacean_id: i32,
+    pub code: String,
+    pub name: String,
+    pub version: String,
+    pub description: Option<String>,
+    pub created_at: NaiveDateTime
+}
+
+#[derive(Insertable)]
+#[diesel(table_name=crates)]
+pub struct NewCrate {
+    pub rustacean_id: i32,
+    pub code: String,
+    pub name: String,
+    pub version: String,
+    pub description: Option<String>,
+}

src/schema.rs

@@ -0,0 +1,32 @@
+// @generated automatically by Diesel CLI.
+
+diesel::table! {
+    crates (id) {
+        id -> Int4,
+        rustacean_id -> Int4,
+        #[max_length = 64]
+        code -> Varchar,
+        #[max_length = 128]
+        name -> Varchar,
+        #[max_length = 64]
+        version -> Varchar,
+        description -> Nullable<Text>,
+        created_at -> Timestamp,
+    }
+}
+
+diesel::table! {
+    rustaceans (id) {
+        id -> Int4,
+        name -> Varchar,
+        email -> Varchar,
+        created_at -> Timestamp,
+    }
+}
+
+diesel::joinable!(crates -> rustaceans (rustacean_id));
+
+diesel::allow_tables_to_appear_in_same_query!(
+    crates,
+    rustaceans,
+);