a lot of early diesel stuff
This commit is contained in:
parent
c0b0d16622
commit
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@ -539,6 +539,41 @@ dependencies = [
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"regex-syntax 0.7.5",
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]
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[[package]]
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name = "darling"
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version = "0.20.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "83b2eb4d90d12bdda5ed17de686c2acb4c57914f8f921b8da7e112b5a36f3fe1"
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dependencies = [
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"darling_core",
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"darling_macro",
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]
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[[package]]
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name = "darling_core"
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version = "0.20.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "622687fe0bac72a04e5599029151f5796111b90f1baaa9b544d807a5e31cd120"
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dependencies = [
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"fnv",
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"ident_case",
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"proc-macro2",
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"quote",
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"strsim",
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"syn",
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]
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[[package]]
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name = "darling_macro"
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version = "0.20.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "733cabb43482b1a1b53eee8583c2b9e8684d592215ea83efd305dd31bc2f0178"
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dependencies = [
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"darling_core",
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"quote",
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"syn",
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]
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[[package]]
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name = "data-encoding"
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version = "2.6.0"
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@ -565,9 +600,52 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "diesel"
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version = "2.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "62d6dcd069e7b5fe49a302411f759d4cf1cf2c27fe798ef46fb8baefc053dd2b"
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dependencies = [
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"diesel_derives",
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"libsqlite3-sys",
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"serde_json",
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"time",
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"uuid",
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]
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[[package]]
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name = "diesel-demo"
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version = "0.1.0"
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dependencies = [
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"anyhow",
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"diesel",
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"dotenvy",
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"libpt",
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"serde",
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"serde_json",
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]
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[[package]]
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name = "diesel_derives"
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version = "2.2.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "59de76a222c2b8059f789cbe07afbfd8deb8c31dd0bc2a21f85e256c1def8259"
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dependencies = [
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"diesel_table_macro_syntax",
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"dsl_auto_type",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "diesel_table_macro_syntax"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "209c735641a413bc68c4923a9d6ad4bcb3ca306b794edaa7eb0b3228a99ffb25"
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dependencies = [
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"syn",
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]
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[[package]]
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name = "digest"
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@ -591,12 +669,32 @@ dependencies = [
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"syn",
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]
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[[package]]
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name = "dotenvy"
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version = "0.15.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1aaf95b3e5c8f23aa320147307562d361db0ae0d51242340f558153b4eb2439b"
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[[package]]
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name = "drain_filter_polyfill"
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version = "0.1.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "669a445ee724c5c69b1b06fe0b63e70a1c84bc9bb7d9696cd4f4e3ec45050408"
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[[package]]
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name = "dsl_auto_type"
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version = "0.1.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "0892a17df262a24294c382f0d5997571006e7a4348b4327557c4ff1cd4a8bccc"
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dependencies = [
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"darling",
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"either",
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"heck 0.5.0",
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "echargs"
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version = "0.1.0"
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@ -1069,6 +1167,12 @@ dependencies = [
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"cc",
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]
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[[package]]
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name = "ident_case"
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version = "1.0.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
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[[package]]
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name = "idna"
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version = "0.5.0"
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@ -2590,6 +2694,12 @@ version = "0.2.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
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[[package]]
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name = "uuid"
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version = "1.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "d023da39d1fde5a8a3fe1f3e01ca9632ada0a63e9797de55a879d6e2236277be"
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[[package]]
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name = "valuable"
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version = "0.1.0"
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@ -0,0 +1 @@
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export DATABASE_URL=./data/dieseldemo.db
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@ -4,3 +4,9 @@ version = "0.1.0"
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edition = "2021"
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[dependencies]
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anyhow.workspace = true
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diesel = { version = "2.2.1", features = ["serde_json", "sqlite", "uuid"] }
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dotenvy = "0.15.7"
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libpt.workspace = true
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serde = { workspace = true, features = ["serde_derive"] }
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serde_json.workspace = true
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@ -0,0 +1,19 @@
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# Diesel seems more complex
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This project uses sqlite as I can't be bothered to host a postgres instance
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just for this.
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## Setup
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* Install diesel and the diesel CLI tool.
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* `DATABASE_URL=./data/dieseldemo.db diesel setup`
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* We create migrations up/down and fill them with sql to do something and undo something
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* Alternatively, we can use a rust macro to define schemes that become sql
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through magic. I like this way better for this project because I learn more
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diesel and also because it avoids having to deal with incompatibilities of the
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database types (maybe).
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* Run `diesel migration generate --diff-schema create_posts`
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## Ressources
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* [Official Guide](https://diesel.rs/guides/getting-started)
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Binary file not shown.
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@ -0,0 +1,9 @@
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# For documentation on how to configure this file,
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# see https://diesel.rs/guides/configuring-diesel-cli
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[print_schema]
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file = "src/schema.rs"
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custom_type_derives = ["diesel::query_builder::QueryId", "Clone"]
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[migrations_directory]
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dir = "/home/cscherr/Documents/code/rust/rs-basic/members/diesel-demo/migrations"
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@ -0,0 +1,2 @@
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-- This file should undo anything in `up.sql`
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DROP TABLE IF EXISTS `posts`;
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@ -0,0 +1,8 @@
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-- Your SQL goes here
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CREATE TABLE `posts`(
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`id` INT4 NOT NULL PRIMARY KEY,
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`title` VARCHAR NOT NULL,
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`body` TEXT NOT NULL,
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`published` BOOL NOT NULL
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);
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@ -0,0 +1,18 @@
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pub mod schema;
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use std::env;
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use diesel::prelude::*;
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use diesel::sqlite::SqliteConnection;
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use dotenvy::dotenv;
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use libpt::log::error; // load envars from a `.env` file
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pub fn establish_connection() -> anyhow::Result<SqliteConnection> {
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dotenv()?;
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let database_url = env::var("DATABASE_URL")?;
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Ok(SqliteConnection::establish(&database_url)
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.inspect_err(|e| error!("Error connecting to {}:\n{e:#?}", database_url))?)
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}
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@ -1,3 +1,16 @@
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fn main() {
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println!("Hello, world!");
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use libpt::log::{self, debug};
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use diesel_demo as lib;
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fn main() -> anyhow::Result<()> {
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let _logger = log::Logger::builder()
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.max_level(log::Level::TRACE)
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.uptime(true)
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.build();
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debug!("logger initialized");
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let conn = lib::establish_connection()?;
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debug!("db connection established");
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Ok(())
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}
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@ -0,0 +1,12 @@
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// @generated automatically by Diesel CLI.
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diesel::table! {
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posts (id) {
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id -> Int4, // what the hell is an Int4???? I guess it must
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// be a 4 byte integer (u32?), no way it would be a nibble.
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title -> Varchar,
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body -> Text, // What is the difference between Text and Varchar? I know Varchar
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// from various DB stuff but idk Text
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published -> Bool,
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}
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}
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