Journal des changements de version

v2.0 - 2020.08

GORM 2.0 a été réécrit de zéro, introduisant des changements majeurs de l’API et de nombreuses améliorations

Amélioration des performances
Modularité
Context, Batch Insert, Prepared Statement Mode, DryRun Mode, Join Preload, Find To Map, Create From Map, FindInBatches supports
Nested Transaction/SavePoint/RollbackTo SavePoint supports
Named Argument, Group Conditions, Upsert, Locking, Optimizer/Index/Comment Hints supports, SubQuery improvements
Full self-reference relationships supports, Join Table improvements, Association Mode for batch data
Multiple fields support for tracking create/update time, which adds support for UNIX (milli/nano) seconds
Field permissions support: read-only, write-only, create-only, update-only, ignored
New plugin system: multiple databases, read/write splitting support with plugin Database Resolver, prometheus integrations…
New Hooks API: unified interface with plugins
New Migrator: allows to create database foreign keys for relationships, constraints/checker support, enhanced index support
New Logger: context support, improved extensibility
Unified Naming strategy: table name, field name, join table name, foreign key, checker, index name rules
Meilleure prise en charge de type de données personnalisé (par ex. JSON)

Modifications importantes :

gorm.Open retourne *gorm.DB au lieu de gorm.DB
La mise à jour ne met à jour que les champs modifiés
Le Soft Delete vérifie seulement deleted_at IS NULL
New ToDBName logic Common initialisms from golint like HTTP, URI was converted to lowercase, so HTTP‘s db name is http, but not h_t_t_p, but for some other initialisms not in the list, like SKU, it’s db name was s_k_u, this change fixed it to sku
L’erreur RecordNotFound a été renommé en ErrRecordNotFound
Le dialecte mssql a été renommé en github.com/jinzhu/gorm/dialects/mssql
Hstore a été déplacé vers le paquet github.com/jinzhu/gorm/dialects/postgres