Matthieu Bessat 5f45671b74 feat: one-to-many relation helper

Allow one to specify that a field of a model is a foreign key.
It will generate a bunch of helper methods to query related entities
from one entity.

2026-01-04 22:14:00 +01:00

830 B

Raw Blame History

Design draft

This document is at the attention of the developers of sqlxgentools.

Implementing basic relation ship

Issues

Problems with Struct non-flexibility

Turning the problem around: Views

hasMany / belongsTo relationship

So we can implements a method

use repositories::impls::post::RelationShips;

let post = PostRepository::new(db).get_one_by_id("id_machin")?;
post.first_name // OK
let authors = post.get_authors()? // we need to require the implementation

.relations() => give you a RelationFetcherBuilder .of(entity) => give you a RelationFetcher .author


let post_repo = PostRepository::new(db);
let author: User = post_repo.relations()
    .of(post)
    .author().ok_or(Err)?;
let comments: Vec<Comment> = post_repo.relations()
    .of(post)
    .comments().ok_or(Err)?;