Add onDeleteAction to RelationMetadata (#4100)

* Add onDeleteAction to relationMetadata

* rename to SET NULL

* fix migration

* fix migration

* fix after review

packages/twenty-server/src/metadata/relation-metadata/relation-metadata.entity.ts

@@ -20,6 +20,12 @@ export enum RelationMetadataType {
   MANY_TO_MANY = 'MANY_TO_MANY',
 }
 
+export enum RelationOnDeleteAction {
+  CASCADE = 'CASCADE',
+  RESTRICT = 'RESTRICT',
+  SET_NULL = 'SET_NULL',
+}
+
 @Entity('relationMetadata')
 export class RelationMetadataEntity implements RelationMetadataInterface {
   @PrimaryGeneratedColumn('uuid')
@@ -28,6 +34,14 @@ export class RelationMetadataEntity implements RelationMetadataInterface {
   @Column({ nullable: false })
   relationType: RelationMetadataType;
 
+  @Column({
+    nullable: false,
+    default: RelationOnDeleteAction.SET_NULL,
+    type: 'enum',
+    enum: RelationOnDeleteAction,
+  })
+  onDeleteAction: RelationOnDeleteAction;
+
   @Column({ nullable: false, type: 'uuid' })
   fromObjectMetadataId: string;
 

packages/twenty-server/src/metadata/relation-metadata/relation-metadata.service.ts

@@ -200,7 +200,7 @@ export class RelationMetadataService extends TypeOrmQueryService<RelationMetadat
           action: 'alter',
           columns: [
             {
-              action: WorkspaceMigrationColumnActionType.RELATION,
+              action: WorkspaceMigrationColumnActionType.CREATE_FOREIGN_KEY,
               columnName: foreignKeyColumnName,
               referencedTableName: computeObjectTargetTable(
                 objectMetadataMap[relationMetadataInput.fromObjectMetadataId],