fix(utils): DML one to one definition (#10415)

RESOLVES FRMW-2819

**What**
Fix one to one definition.

.changeset/green-turkeys-fetch.md

@@ -0,0 +1,5 @@
+---
+"@medusajs/utils": patch
+---
+
+fix(utils): DML one to one definition

packages/core/utils/src/dml/__tests__/entity-builder.spec.ts

@@ -2690,6 +2690,7 @@ describe("Entity builder", () => {
           nullable: false,
           mappedBy: "user",
           cascade: ["persist", "soft-remove"],
+          onDelete: "cascade",
         },
         created_at: {
           reference: "scalar",
@@ -2853,6 +2854,7 @@ describe("Entity builder", () => {
           nullable: false,
           mappedBy: "user",
           cascade: ["persist", "soft-remove"],
+          onDelete: "cascade",
         },
         created_at: {
           reference: "scalar",
@@ -2918,22 +2920,24 @@ describe("Entity builder", () => {
         },
         user: {
           entity: "User",
+          fieldName: "user_id",
           mappedBy: "email",
           name: "user",
           nullable: false,
           onDelete: "cascade",
           owner: true,
           reference: "1:1",
+          cascade: ["persist", "soft-remove"],
         },
         user_id: {
           columnType: "text",
           getter: false,
+          persist: false,
           name: "user_id",
           nullable: false,
           reference: "scalar",
           setter: false,
           type: "string",
-          persist: false,
         },
         created_at: {
           reference: "scalar",
@@ -3612,6 +3616,8 @@ describe("Entity builder", () => {
           onDelete: "cascade",
           owner: true,
           reference: "1:1",
+          cascade: ["persist", "soft-remove"],
+          fieldName: "user_id",
         },
         user_id: {
           columnType: "text",
@@ -4551,21 +4557,23 @@ describe("Entity builder", () => {
         },
         user: {
           name: "user",
+          fieldName: "user_id",
           reference: "1:1",
           entity: "User",
           nullable: false,
           mappedBy: "email",
+          onDelete: undefined,
           owner: true,
         },
         user_id: {
           reference: "scalar",
+          persist: false,
           type: "string",
           columnType: "text",
           nullable: false,
           name: "user_id",
           getter: false,
           setter: false,
-          persist: false,
         },
         created_at: {
           reference: "scalar",
@@ -4747,21 +4755,23 @@ describe("Entity builder", () => {
         },
         user: {
           name: "user",
+          fieldName: "user_id",
           reference: "1:1",
           entity: "User",
           nullable: true,
+          onDelete: undefined,
           mappedBy: "email",
           owner: true,
         },
         user_id: {
           reference: "scalar",
+          persist: false,
           type: "string",
           columnType: "text",
           nullable: true,
           name: "user_id",
           getter: false,
           setter: false,
-          persist: false,
         },
         created_at: {
           reference: "scalar",
@@ -5379,21 +5389,23 @@ describe("Entity builder", () => {
         },
         user: {
           name: "user",
+          fieldName: "user_id",
           reference: "1:1",
           entity: "User",
           nullable: false,
           mappedBy: "email",
+          onDelete: undefined,
           owner: true,
         },
         user_id: {
           reference: "scalar",
           type: "string",
+          persist: false,
           columnType: "text",
           nullable: false,
           name: "user_id",
           getter: false,
           setter: false,
-          persist: false,
         },
         created_at: {
           reference: "scalar",
@@ -5577,21 +5589,23 @@ describe("Entity builder", () => {
         },
         user: {
           name: "user",
+          fieldName: "user_id",
           reference: "1:1",
           entity: "User",
           nullable: false,
           mappedBy: "email",
+          onDelete: undefined,
           owner: true,
         },
         user_id: {
           reference: "scalar",
+          persist: false,
           type: "string",
           columnType: "text",
           nullable: false,
           name: "user_id",
           getter: false,
           setter: false,
-          persist: false,
         },
         created_at: {
           reference: "scalar",
@@ -5796,6 +5810,7 @@ describe("Entity builder", () => {
         },
         parent: {
           name: "parent",
+          fieldName: "parent_id",
           mappedBy: "child",
           reference: "1:1",
           entity: "User",
@@ -5807,8 +5822,8 @@ describe("Entity builder", () => {
           name: "parent_id",
           type: "string",
           columnType: "text",
-          persist: false,
           reference: "scalar",
+          persist: false,
           getter: false,
           setter: false,
           nullable: false,

packages/core/utils/src/dml/helpers/entity-builder/define-relationship.ts

@@ -7,6 +7,7 @@ import {
 } from "@medusajs/types"
 import {
   BeforeCreate,
+  Cascade,
   ManyToMany,
   ManyToOne,
   OneToMany,
@@ -147,14 +148,18 @@ export function defineHasOneRelationship(
     mappedBy = relationship.mappedBy
   }
 
-  OneToOne({
+  const oneToOneOptions = {
     entity: relatedModelName,
     nullable: relationship.nullable,
     ...(mappedBy ? { mappedBy } : {}),
-    cascade: shouldRemoveRelated
-      ? (["persist", "soft-remove"] as any)
-      : undefined,
-  } as OneToOneOptions<any, any>)(MikroORMEntity.prototype, relationship.name)
+    onDelete: shouldRemoveRelated ? "cascade" : undefined,
+  } as OneToOneOptions<any, any>
+
+  if (shouldRemoveRelated) {
+    oneToOneOptions.cascade = ["persist", "soft-remove"] as any
+  }
+
+  OneToOne(oneToOneOptions)(MikroORMEntity.prototype, relationship.name)
 }
 
 /**
@@ -368,14 +373,6 @@ export function defineBelongsToRelationship(
   ) {
     const foreignKeyName = camelToSnakeCase(`${relationship.name}Id`)
 
-    OneToOne({
-      entity: relatedModelName,
-      nullable: relationship.nullable,
-      mappedBy: mappedBy,
-      owner: true,
-      onDelete: shouldCascade ? "cascade" : undefined,
-    })(MikroORMEntity.prototype, relationship.name)
-
     Object.defineProperty(MikroORMEntity.prototype, foreignKeyName, {
       value: null,
       configurable: true,
@@ -384,12 +381,27 @@ export function defineBelongsToRelationship(
     })
 
     Property({
-      type: "string",
       columnType: "text",
+      type: "string",
       nullable: relationship.nullable,
       persist: false,
     })(MikroORMEntity.prototype, foreignKeyName)
 
+    const oneToOneOptions: Parameters<typeof OneToOne>[0] = {
+      entity: relatedModelName,
+      nullable: relationship.nullable,
+      mappedBy: mappedBy,
+      fieldName: foreignKeyName,
+      owner: true,
+      onDelete: shouldCascade ? "cascade" : undefined,
+    }
+
+    if (shouldCascade) {
+      oneToOneOptions.cascade = [Cascade.PERSIST, "soft-remove"] as any
+    }
+
+    OneToOne(oneToOneOptions)(MikroORMEntity.prototype, relationship.name)
+
     const { tableName } = parseEntityName(entity)
     applyEntityIndexes(MikroORMEntity, tableName, [
       {

packages/core/utils/src/dml/integration-tests/__tests__/has-one-belongs-to.spec.ts

@@ -32,7 +32,7 @@ describe("hasOne - belongTo", () => {
     const team = model.define("team", {
       id: model.id().primaryKey(),
       name: model.text(),
-      user: model.belongsTo(() => user, { mappedBy: "team" }),
+      user: model.belongsTo(() => user, { mappedBy: "team" }).nullable(),
     })
 
     const user = model.define("user", {