{"id":626,"date":"2021-04-19T17:34:49","date_gmt":"2021-04-19T09:34:49","guid":{"rendered":"http:\/\/blog.viter.top\/?p=626"},"modified":"2021-05-06T15:15:15","modified_gmt":"2021-05-06T07:15:15","slug":"nestjs-%e4%b8%ad%e7%9a%84%e7%ae%a1%e9%81%93","status":"publish","type":"post","link":"https:\/\/blog.viter.top\/index.php\/2021\/04\/19\/nestjs-%e4%b8%ad%e7%9a%84%e7%ae%a1%e9%81%93\/","title":{"rendered":"Nestjs \u4e2d\u7684\u7ba1\u9053"},"content":{"rendered":"\n<p>1\u3001\u521b\u5efa\u7ba1\u9053<br><code>nest g pipe user<\/code><br>\u7ba1\u9053\u521b\u5efa\u5b8c\u6210\u540e\u751f\u6210\u5982\u4e0b\u4ee3\u7801\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { ArgumentMetadata, Injectable, PipeTransform } from '@nestjs\/common';\n@Injectable()\nexport class UserPipe implements PipeTransform {\n    transform(value: any, metadata: ArgumentMetadata) {\n    \/\/\u8fd9\u4e2a\u91cc\u9762\u53ef\u4ee5\u4fee\u6539\u4f20\u5165\u7684\u503c\u4ee5\u53ca\u9a8c\u8bc1\u8f6c\u5165\u503c\u7684\u5408\u6cd5\u6027\n    return value;\n  }\n}<\/code><\/pre>\n\n\n\n<p>2\u3001\u4f7f\u7528\u7ba1\u9053<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { Controller,Get,UsePipes,Query} from '@nestjs\/common';\nimport {UserPipe} from '..\/..\/user.pipe';\n@Controller('user')\nexport class UserController {\n@Get()\nindex(){\n  return '\u7528\u6237\u9875\u9762';\n}\n@Get('pipe')\n@UsePipes(new UserPipe())\npipe(@Query() info){\n  console.log(info);\n  return `this is Pipe`;\n}\n}<\/code><\/pre>\n\n\n\n<p>\u4e09\u3001 Nestjs \u4e2d\u7ba1\u9053\u7ed3\u5408 Joi \u5e93\u5b9e\u73b0\u6570\u636e\u9a8c\u8bc1<\/p>\n\n\n\n<p>Joi \u5e93\uff1a https:\/\/github.com\/hapijs\/joi<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>import { ArgumentMetadata, Injectable, PipeTransform, BadRequestException } from '@nestjs\/common';\r\n\r\nimport * as Joi from 'joi';\r\n\r\n@Injectable()\r\nexport class ArticlePipe implements PipeTransform {\r\n  constructor(private readonly schema) { }\r\n  transform(value: any, metadata: ArgumentMetadata) {\r\n    console.log(\"pipe-\u7ba1\u9053\u62ff\u5230\u7684\u6570\u636e\", value);\r\n    \/\/ const { error } = Joi.validate(value, this.schema)\r\n    const { error } = this.schema.validate(value)\r\n\r\n    console.log(error);\r\n    if (error) {\r\n      throw new BadRequestException(error.details&#91;0].message)\r\n      \/\/ throw new BadRequestException(error)\r\n    }\r\n\r\n    return value;\r\n  }\r\n}\r\n<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>import * as Joi from 'joi';\r\nlet rootInfo = Joi.object({\r\n  name: Joi.string().required(),\r\n  age: Joi.number().integer().min(6).max(66).required(),\r\n  id: Joi.string().min(6).max(66),\r\n}).unknown();\n\n\n@Get('pipe')\r\n  @UsePipes(new ArticlePipe(rootInfo))\r\n  pipe(@Query() info) {\r\n    console.log('info--\u7ba1\u9053', info);\r\n    return 'info'\r\n  }\r\n\r\n  @Post('pipe2')\r\n  @UsePipes(new ArticlePipe(rootInfo))\r\n  pipe2(@Query() info) {\r\n    console.log('info--\u7ba1\u9053', info);\r\n    return 'info'\r\n  }<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>unknown() \u662f\u4e0d\u7528\u9a8c\u8bc1\u672a\u77e5\u6570\u636e\u7684<\/code><\/pre>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1\u3001\u521b\u5efa\u7ba1\u9053nest g pipe user\u7ba1\u9053\u521b\u5efa\u5b8c\u6210\u540e\u751f\u6210\u5982\u4e0b\u4ee3\u7801\uff1a 2\u3001\u4f7f\u7528\u7ba1\u9053 \u4e09\u3001 Nestjs \u4e2d\u7ba1\u9053\u7ed3\u5408 Joi \u5e93 &#8230;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[16],"_links":{"self":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/626"}],"collection":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/comments?post=626"}],"version-history":[{"count":3,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/626\/revisions"}],"predecessor-version":[{"id":633,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/posts\/626\/revisions\/633"}],"wp:attachment":[{"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/media?parent=626"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/categories?post=626"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.viter.top\/index.php\/wp-json\/wp\/v2\/tags?post=626"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}