56 lines
1.6 KiB
TypeScript
56 lines
1.6 KiB
TypeScript
import { ApiHideProperty, ApiProperty } from '@nestjs/swagger';
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import { Exclude } from 'class-transformer';
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import {
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BaseEntity,
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Column,
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CreateDateColumn,
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PrimaryGeneratedColumn,
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UpdateDateColumn,
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VirtualColumn
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} from 'typeorm';
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// 如果觉得前端转换时间太麻烦，并且不考虑通用性的话，可以在服务端进行转换，eg: @UpdateDateColumn({ name: 'updated_at', transformer })
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// const transformer: ValueTransformer = {
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// to(value) {
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// return value
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// },
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// from(value) {
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// return dayjs(value).format('YYYY-MM-DD HH:mm:ss')
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// },
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// }
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export abstract class CommonEntity extends BaseEntity {
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@PrimaryGeneratedColumn()
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id: number;
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@CreateDateColumn({ name: 'created_at' })
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createdAt: Date;
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@UpdateDateColumn({ name: 'updated_at' })
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updatedAt: Date;
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}
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export abstract class CompleteEntity extends CommonEntity {
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@ApiHideProperty()
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@Exclude()
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@Column({ name: 'create_by', update: false, comment: '创建者' })
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createBy: number;
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@ApiHideProperty()
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@Exclude()
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@Column({ name: 'update_by', comment: '更新者' })
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updateBy: number;
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/**
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* 不会保存到数据库中的虚拟列，数据量大时可能会有性能问题，有性能要求请考虑在 service 层手动实现
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* @see https://typeorm.io/decorator-reference#virtualcolumn
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*/
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@ApiProperty({ description: '创建者' })
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@VirtualColumn({ query: alias => `SELECT username FROM sys_user WHERE id = ${alias}.create_by` })
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creator: string;
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@ApiProperty({ description: '更新者' })
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@VirtualColumn({ query: alias => `SELECT username FROM sys_user WHERE id = ${alias}.update_by` })
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updater: string;
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}
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