重新生成 prisma types
npx prisma generate
prisma migrate
npx prisma migrate dev --name 20230723
常见问题：
- "GraphQLError: Type About must define one or more fields" 我的做法是 给 About 中任意一个字段添加 @Field 装饰器，后就好了， 但是按道理说不需要的，因为我们有用 graphql cli 插件 https://docs.nestjs.com/graphql/cli-plugin 后来把 dist 目录删除， 重新启动项目，发现也 ok 了
关于 @nestjs/grapnql 插件的说明 https://docs.nestjs.com/graphql/cli-plugin#using-the-cli-plugin
The GraphQL plugin will automatically:
annotate all input object, object type and args classes properties with @Field unless @HideField is used set the nullable property depending on the question mark (e.g. name?: string will set nullable: true) set the type property depending on the type (supports arrays as well) generate descriptions for properties based on comments (if introspectComments set to true) Please, note that your filenames must have one of the following suffixes in order to be analyzed by the plugin: ['.input.ts', '.args.ts', '.entity.ts', '.model.ts'] (e.g., author.entity.ts). If you are using a different suffix, you can adjust the plugin's behavior by specifying the typeFileNameSuffix option (see below).