A SeaORM-friendly port of Ruby's closure_tree.
Early preview (0.0.1). PostgreSQL only. Contributions welcome.
[dependencies] closure-tree = "0.0.1"use closure_tree::ClosureTreeRepository; use closure_tree::ClosureTreeModelDerive as ClosureTreeModel; use sea_orm::entity::prelude::*; #[derive(Clone, Debug, PartialEq, DeriveEntityModel, ClosureTreeModel)] #[sea_orm(table_name = "nodes")] #[closure_tree(hierarchy_module = "crate::entity::node_hierarchy", hierarchy_table = "node_hierarchies")] pub struct Model { #[sea_orm(primary_key)] pub id: i32, pub parent_id: Option<i32>, pub name: String, } #[tokio::main] async fn main() -> Result<(), Box<dyn std::error::Error>> { let db = sea_orm::Database::connect("postgres://...").await?; let repo = ClosureTreeRepository::<entity::node::Model>::new(); let _leaf = repo .find_or_create_by_path(&db, &["root", "child", "leaf"]) .await?; Ok(()) }- Derive macro for SeaORM models (
#[derive(ClosureTreeModel)]). - Repository helpers (
parent,descendants,find_by_path,find_or_create_by_path, etc.). - Advisory locks via
pg_advisory_lock, rebuild utilities. - Integration test against a Docker Postgres instance.
- PostgreSQL only.
- Ordering,
hash_tree, dependent strategies, and some Ruby APIs are not yet ported. - Advisory lock is limited to Postgres advisory locks; no MySQL adapter yet.
cargo fmt cargo clippy --all-targets -- -D warnings cargo test Requires Docker Postgres at postgres://closure_tree:closure_tree_pass@localhost:5434/closure_tree_test (see tests/postgres.rs).