sea-orm 2.0.0-rc.42

on Rust Cargo

Release Notes: SeaORM 2.0.0-rc.42

(since 2.0.0-rc.41)

New Features

Typed value arrays via try_getable_array (#3108, #2967)

DeriveValueType wrappers backed by a Vec<_> now round-trip as native
PostgreSQL arrays: the derive generates a try_getable_array implementation, so
a newtype over Vec<i32> reads and writes as INTEGER[] without a manual
TryGetable impl.

#[derive(Clone, Debug, PartialEq, DeriveValueType)]
pub struct Tags(Vec<String>);

Replace and delete a nested HasOne (#3110, #3060, #3061)

The active has-one type (ActiveHasOne) gains a Delete variant plus generated
delete_<field> / set_<field>_option builders. Setting a populated has-one now
replaces the existing linked record (deleting or orphaning the old one) instead
of erroring, and Delete removes it on save.

let mut user = user::Entity::load().filter_by_id(1).with(profile::Entity).one(db).await?.unwrap();
user.delete_profile().save(db).await?; // remove the linked profile

TryFrom<&str> for active enums (#3111)

DeriveActiveEnum now generates a TryFrom<&str> implementation, so a string
value can be parsed straight into the enum by its database string representation.

let color = Color::try_from("Black")?;

Enhancements

ActiveHasOne / ActiveHasMany (renamed)

The active/write-side companions to HasOne / HasMany are renamed from
HasOneModel / HasManyModel to ActiveHasOne / ActiveHasMany, so the names
read as active-model values rather than loaded models. The read-side HasOne /
HasMany types are unchanged.

Documented SqlErr and DbErr::sql_err() (#2940)

DbErr::sql_err() and the SqlErr variants are documented, including how to reach
the raw driver error for backend-specific handling.

if let Some(SqlErr::UniqueConstraintViolation(_)) = err.sql_err() { /* ... */ }

Schema sync warns on column-type divergence (#3106)

SchemaBuilder::sync() logs a warning when a live column's type diverges from the
entity definition instead of silently ignoring the difference.

Bug Fixes

Codegen ColumnType coverage (#3092)

Entity generation emits compiling code for Year, Bit, VarBit, MacAddr,
LTree, and Interval columns, and for Money columns carrying precision and
scale — previously these produced non-compiling ColumnType expressions.

Skip generated columns in entity generation (#3094)

sea-orm-cli generate entity skips database-generated columns, which cannot be
inserted or updated, instead of emitting them as ordinary fields.

SchemaBuilder::sync() returns a Send future (#3100)

Regression fix: sync() no longer returns a non-Send future, so it can be used
across .await points on multi-threaded runtimes. Released together with
sea-schema 0.18.1.

sea-orm-sync generation fixes (#3112)

The make-sync transform correctly handles futures_util usage in the mock
driver, keeping the blocking sea-orm-sync crate in sync with the async source.

Compatibility Notes

• HasOneModel / HasManyModel are renamed to ActiveHasOne / ActiveHasMany.
  Update references; the read-side HasOne / HasMany are unaffected.
• DbErr, UpdateResult, DeleteResult, ActiveHasOne, and ActiveHasMany are
  now #[non_exhaustive]; downstream matches need a wildcard arm.
• Schema sync and nested-ActiveModel relation mutation are marked unstable
  (semver-exempt) while their APIs settle.
• Prebuilt sea-orm-cli binaries no longer include the Intel macOS
  (x86_64-apple-darwin) target.