updates

things/nest-typeorm/src/entities/decorators/base.ts

@@ -5,11 +5,14 @@ import { ColumnCommonOptions } from 'typeorm/decorator/options/ColumnCommonOptio
 import { ColumnEnumOptions } from 'typeorm/decorator/options/ColumnEnumOptions';
 import {
   IsEnum,
+  IsInt,
   IsNotEmpty,
   IsOptional,
   IsString,
-  ValidateIf,
+  Min,
 } from 'class-validator';
+import { ColumnWithWidthOptions } from 'typeorm/decorator/options/ColumnWithWidthOptions';
+import { BigintTransformer } from '../utility/bigint-transform';
 
 export function MergePropertyDecorators(
   decs: PropertyDecorator[],
@@ -36,14 +39,14 @@ export const StringColumn = (
     Column('varchar', {
       length,
       default: defaultValue,
-      nullable: !required && !defaultValue,
+      nullable: !required && defaultValue == null,
       ...columnExtras,
     }),
     ApiProperty({
       type: String,
       description,
       default: defaultValue,
-      required: required && !defaultValue,
+      required: required && defaultValue == null,
       ...propertyExtras,
     }),
     ...(required ? [] : [IsOptional()]),
@@ -51,6 +54,35 @@ export const StringColumn = (
     IsNotEmpty(),
   ]);
 
+export const IntColumn = (
+  type: 'int' | 'smallint' | 'bigint' | 'tinyint' = 'int',
+  unsigned = false,
+  description = 'unknown',
+  defaultValue?: number,
+  required = false,
+  columnExtras: ColumnCommonOptions & ColumnWithWidthOptions = {},
+  propertyExtras: ApiPropertyOptions = {},
+) =>
+  MergePropertyDecorators([
+    Column(type, {
+      default: defaultValue,
+      nullable: !required && defaultValue == null,
+      unsigned,
+      ...(type === 'bigint' ? { transformer: new BigintTransformer() } : {}),
+      ...columnExtras,
+    }),
+    ApiProperty({
+      type: Number,
+      description,
+      default: defaultValue,
+      required: required && defaultValue == null,
+      ...propertyExtras,
+    }),
+    ...(required ? [] : [IsOptional()]),
+    IsInt(),
+    ...(unsigned ? [Min(0)] : []),
+  ]);
+
 export const EnumColumn = <T>(
   targetEnum: Record<string, T>,
   description = 'unknown',