fix JsonColumn

src/decorators/property.ts

@@ -28,6 +28,7 @@ import {
   getClassFromClassOrArray,
   ParseType,
 } from '../utility/insert-field';
+import { TypeTransformer } from '../utility/type-transformer';
 
 export interface OpenAPIOptions<T> {
   description?: string;
@@ -205,7 +206,10 @@ export const JsonColumn = <C extends ClassOrArray>(
     Index(),
     Type(() => cl),
     ValidateNested(),
-    Column('jsonb', columnDecoratorOptions(options)),
+    Column('jsonb', {
+      ...columnDecoratorOptions(options),
+      transformer: new TypeTransformer(definition),
+    }),
     validatorDecorator(options),
     swaggerDecorator(options, { type: definition }),
   ]);

src/utility/type-transformer.ts

+import { ClassOrArray } from './insert-field';
+import { ValueTransformer } from 'typeorm';
+
+export class TypeTransformer implements ValueTransformer {
+  constructor(private definition: ClassOrArray) {}
+
+  from(dbValue) {
+    if (!dbValue) {
+      return dbValue;
+    }
+    if (Array.isArray(this.definition)) {
+      return dbValue.map((value) =>
+        Object.assign(new this.definition[0](), value),
+      );
+    }
+    return Object.assign(new this.definition(), dbValue);
+  }
+  to(entValue): any {
+    return entValue;
+  }
+}