Merge pull request #3 from octet-stream/feat/one-to-many

Author: octet-stream

.changeset/breezy-papayas-sniff.md

@@ -0,0 +1,5 @@
+---
+"better-auth-mikro-orm": minor
+---
+
+Support 1:m references

src/tests/entities/User.ts

@@ -1,7 +1,15 @@
-import {Entity, type Opt, Property, Unique} from "@mikro-orm/core"
+import {
+  Collection,
+  Entity,
+  OneToMany,
+  type Opt,
+  Property,
+  Unique
+} from "@mikro-orm/core"
 import type {User as DatabaseUser} from "better-auth"
 
 import {Base} from "./Base.js"
+import {Session} from "./Session.js"
 
 @Entity()
 export class User extends Base implements DatabaseUser {
@@ -14,4 +22,7 @@ export class User extends Base implements DatabaseUser {
 
   @Property({type: "string"})
   name!: string
+
+  @OneToMany(() => Session, "user")
+  sessions = new Collection<Session, this>(this)
 }

src/utils/adapterUtils.ts

@@ -74,6 +74,8 @@ export interface AdapterUtils {
   ): Record<string, any>
 }
 
+const ownReferences = [ReferenceKind.SCALAR, ReferenceKind.ONE_TO_MANY]
+
 /**
  * Creates bunch of utilities for adapter
  *
@@ -111,13 +113,14 @@ export function createAdapterUtils(orm: MikroORM): AdapterUtils {
     fieldName: string
   ): EntityProperty {
     const prop = metadata.props.find(prop => {
-      if (prop.kind === ReferenceKind.SCALAR && prop.name === fieldName) {
+      if (ownReferences.includes(prop.kind) && prop.name === fieldName) {
         return true
       }
 
       if (
-        (prop.kind === ReferenceKind.MANY_TO_ONE && prop.name === fieldName) ||
-        prop.fieldNames.includes(naming.propertyToColumnName(fieldName))
+        prop.kind === ReferenceKind.MANY_TO_ONE &&
+        (prop.name === fieldName ||
+          prop.fieldNames.includes(naming.propertyToColumnName(fieldName)))
       ) {
         return true
       }
@@ -141,7 +144,7 @@ export function createAdapterUtils(orm: MikroORM): AdapterUtils {
    * @param prop - Property metadata
    */
   function getReferencedColumnName(entityName: string, prop: EntityProperty) {
-    if (prop.kind === ReferenceKind.SCALAR) {
+    if (ownReferences.includes(prop.kind)) {
       return prop.name
     }