https://github.com/NyxCode/ormx

bringing orm-like features to sqlx
https://github.com/NyxCode/ormx

macros mariadb mysql orm postgres rust sqlx

Last synced: about 1 month ago
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bringing orm-like features to sqlx

• Host: GitHub
• URL: https://github.com/NyxCode/ormx
• Owner: NyxCode
• License: mit
• Created: 2020-07-13T02:39:31.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2024-09-08T21:23:20.000Z (4 months ago)
• Last Synced: 2024-11-21T01:42:44.149Z (about 1 month ago)
• Topics: macros, mariadb, mysql, orm, postgres, rust, sqlx
• Language: Rust
• Homepage:
• Size: 107 KB
• Stars: 287
• Watchers: 7
• Forks: 32
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
ormx



 

   lightweight macros for sqlx  

 








  

  

    

  

  

  

    

  

  

  

    

  

  

  

    

  



## getting started

Add ormx and sqlx to your `Cargo.toml`

```toml

[dependencies.ormx]

version = "0.11"

features = ["postgres"]

[dependencies.sqlx]

version = "0.8"

features = ["postgres", "runtime-tokio-rustls"]

```

## what does it do? 

ormx provides macros for generating commonly used sql queries at compile time.  

ormx is meant to be used together with sqlx. Everything it generates uses `sqlx::query!` under the hood, so every generated query will be checked against your database at compile time.

## what doesn't it do?

ormx is not a full-fledged ORM nor a query builder. For everything except simple CRUD, you can always just use sqlx.  

it is required that every table contains an id column, which uniquely

identifies a row. probably, you would want to use an auto-incrementing integer for this.

this is a central requirement of ormx, and if your table does not fulfill this requirement, ormx

is not what you are looking for.

## databases

| database   | cargo feature             |

|------------|---------------------------|

| PostgreSQL | postgres[^1]              |

| MariaDB    | mariadb                   |

| MySQL      | mysql[^2]                 |

| SQLite     | *currently not supported* |

[^1]: out of these three, the `postgres` backend is the most mature.   

[^2]: the `mysql` backend *does* work with both MariaDB and MySQL, though the `mariadb` backend emits cleaner and probably faster queries.

## [example](https://github.com/NyxCode/ormx/tree/master/example-postgres/src/main.rs)

first, start a postgres database.  

if you have docker installed, you can do so using `./scripts/postgres.sh`.  

next, set the `DATABASE_URL` environment variable: `export DATABASE_URL=postgres://postgres:admin@localhost/ormx`.  

now, inside `example-postgres`, use the sqlx cli to setup the database schema: `cargo sqlx db setup`.  

finally, run `cargo run`.

## help

if you encounter an issue or have questions, feel free to ask in [`#ormx` on the sqlx discord](https://discord.gg/mrZz4Wv8r2).  

The documentation currently is not what it should be, so don't be afraid to ask for help.

## migrate

### to 0.11

v0.11 updated the sqlx dependency to v0.8.  

most notably, the semantics of the `sqlx::Executor` trait have somewhat changed. in most cases, this is fixed by adding a `*` here or there.

### to 0.7

Since 0.7, id columns are not special anymore - if they are generated by the database, you must annotate them with `#[ormx(default)]`.

## a note on reborrowing

if you run into the issue that the compiler tells you that you can't re-use a `&mut Connection` because  

- `use of moved value` and

- `move occurs because 'con' has type '&mut Connection', which does not implement the 'Copy' trait`  

you'll have to manually reborrow the connection with `&mut *con`.