{"id":298,"date":"2017-05-04T17:46:09","date_gmt":"2017-05-04T09:46:09","guid":{"rendered":"https:\/\/colliot.me\/?p=298"},"modified":"2017-11-20T06:56:44","modified_gmt":"2017-11-19T22:56:44","slug":"%e4%b8%80%e4%b8%aa%e4%b8%8d%e6%ad%a3%e7%a1%ae%e7%9a%84-typescript-%e7%b1%bb%e5%9e%8b%e5%ae%9a%e4%b9%89%e5%bc%95%e5%8f%91%e7%9a%84%e8%a1%80%e6%a1%88","status":"publish","type":"post","link":"https:\/\/colliot.org\/zh\/2017\/05\/%e4%b8%80%e4%b8%aa%e4%b8%8d%e6%ad%a3%e7%a1%ae%e7%9a%84-typescript-%e7%b1%bb%e5%9e%8b%e5%ae%9a%e4%b9%89%e5%bc%95%e5%8f%91%e7%9a%84%e8%a1%80%e6%a1%88\/","title":{"rendered":"\u4e00\u4e2a\u4e0d\u6b63\u786e\u7684 TypeScript \u7c7b\u578b\u5b9a\u4e49\u5f15\u53d1\u7684\u8840\u6848"},"content":{"rendered":"

Mongoose \u7684 TypeScript \u7c7b\u578b\u5b9a\u4e49\u5e76\u4e0d\u5b8c\u5168\u6b63\u786e\uff01<\/p>\n

\u6628\u5929\u665a\u4e0a\u5728 bgs \u7814\u7a76\u4e86\uff08\u6216\u8005\u8bf4\u8c03\u8bd5\u4e86\uff09XGS<\/a> \u5199\u7684 nodejs \u670d\u52a1\u5668\u9879\u76ee\u3002\u4ed6\u5728\u7528 koa \u4f5c\u4e3a\u670d\u52a1\u5668\uff0cmongodb \u4f5c\u4e3a\u6570\u636e\u5b58\u50a8\uff0c\u5199\u4e00\u4e2a\u4e0d\u77e5\u9053\u4ec0\u4e48\u9879\u76ee\uff08\u4f3c\u4e4e\u540d\u4e3a\u300c\u5199\u4f5c\u8005\u5e73\u53f0\u300d\/ “Write’s Platform”\uff09\u3002\u53cd\u6b63\u5f53\u65f6\u8fd8\u5904\u4e8e\u5f88\u521d\u7ea7\u7684\u9636\u6bb5\uff0c\u53ea\u6709\u4e24\u4e2a\u8def\u7531\uff0c\u4e00\u4e2a get\uff0c\u4e00\u4e2a post\uff0c\u540e\u8005\u662f\u7528\u6765\u5411 mongodb \u63d0\u4ea4\u4e00\u7bc7\u6587\u7ae0\u7684\u3002\u5728\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u4ed6\u53d1\u73b0\u4e86\u4e00\u4e2a\u95ee\u9898\u2014\u2014\u4ed6\u5728\u4fdd\u5b58\u6587\u7ae0\u7684\u56de\u8c03\u4e2d\u66f4\u6539\u4e86\u54cd\u5e94\u7684\u5185\u5bb9\uff08\u5982\u4e0b\uff09\uff0c\u4f46\u662f\u5b9e\u9645\u6d4b\u8bd5\u5f97\u5230\u7684\u54cd\u5e94\u5185\u5bb9\u5374\u662f koa \u9ed8\u8ba4\u7684 OK\u3002<\/p>\n

router.post('\/path', (ctx, next) => {\r\n    const article = new Article( \/* something *\/ );\r\n    article.save((err, article) => {\r\n      if (err){\r\n        ctx.body = err;\r\n      } else {\r\n        ctx.body = \"success\";\r\n      }\r\n    });\r\n})<\/pre>\n
\u8d77\u521d\u6211\u53d1\u73b0\uff0c\u4ed6\u7684\u4ee3\u7801\u4e2d\uff0crouter.post('\/path', (ctx, next) => { \/* body *\/ });<\/code>\u7684\/* body *\/<\/code>\u8fd9\u6bb5\u4e2d\u5e76\u6ca1\u6709\u8fd4\u56de next()<\/code>\uff0c\u8fd9\u5e94\u8be5\u4f1a\u5bfc\u81f4\u5f02\u6b65\u7684\u56de\u8c03\u6ca1\u6709\u88ab\u963b\u585e\u3002<\/p>\n
\u63a5\u7740\u6211\u60f3\uff0c\u53ef\u80fd\u53c8\u662f koa \u7684\u7248\u672c\u641e\u6df7\u4e86\u4ec0\u4e48\u7684\uff0c\u56e0\u4e3a koa v2\uff0ckoa router \u4ec0\u4e48\u7684\u7248\u672c\u7ba1\u7406\u90fd\u5f88\u6df7\u4e71\uff0c\u957f\u671f\u5904\u4e8e\u867d\u7136\u5927\u5bb6\u90fd\u60f3\u4f7f\u7528\u6700\u65b0\u7248\uff0c\u4f46\u662f\u9ed8\u8ba4\u7684\u5374\u4e00\u76f4\u662f\u65e7\u7248\u7684\u60c5\u51b5\u3002\u540e\u6765\u53c8\u51fa\u73b0\u4e86 koa \u662f\u65b0\u7248\uff0crouter \u662f\u65e7\u7248\u7684\u60c5\u51b5\uff0c\u66fe\u7ecf\u6211\u4e3a\u522b\u4eba\u89e3\u51b3\u8fc7\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n
\u4f46\u662f\u8fd9\u6b21\u5374\u4e0d\u662f\u3002\u5e76\u4e14\u628a\u8fd4\u56de promise \u5207\u6362\u4e3a\u4f7f\u7528 async\/await<\/code>\u4e4b\u540e\uff08\u5982\u4e0b\uff09\uff0c\u60c5\u51b5\u4f9d\u7136\u6ca1\u6709\u597d\u8f6c\u3002<\/p>\n
router.post('\/path', (ctx, next) => {\r\n    const article = new Article( \/* something *\/ );\r\n    return article.save((err, saved) => {\r\n      if (err){\r\n        ctx.body = err;\r\n      } else {\r\n        console.log(saved);\r\n        ctx.body = \"success\";\r\n      }\r\n      \/\/ or `return next();` here.\r\n    }).then((thing) => {\r\n        console.log(thing);\r\n        return next();\r\n    });\r\n})<\/pre>\n
\uff08\u8fc7\u7a0b\u4e2d\u6211\u4eec\u53d1\u73b0\u8fd9\u4e2a\u4f20\u7ed9\u56de\u8c03\u7684 thing<\/code>\u5c45\u7136\u662fundefined<\/code>\uff0c\u8fd9\u662f\u4e2a\u4f0f\u7b14\uff09<\/p>\n
\u6e10\u6e10\u5730\u6211\u88ab\u5404\u79cd\u51fd\u6570\u7684\u7b7e\u540d\uff08\u6bd4\u5982\u7a76\u7adf\u5e94\u8be5\u8fd4\u56de\u4e00\u4e2a\u4ec0\u4e48\uff0c\u662f next() \u8fd8\u662f\u4e00\u4e2a promise\uff0c\u800c next \u7684\u7c7b\u578b\u53c8\u662f\u4ec0\u4e48\uff1f\uff09\u641e\u5f97\u70e6\u8e81\u8d77\u6765\u3002\u4e8e\u662f\u6211\u63d0\u8bae\u4f7f\u7528 TypeScript \u6765\u8f85\u52a9\u68c0\u67e5\u3002<\/p>\n
\u6211\u4eec\u5f00\u59cb\u6000\u7591 article.save<\/code>\u8fd9\u4e2a\u51fd\u6570\u3002\u56e0\u4e3a\u5728 koa \u5b98\u65b9\uff08\u4ec5\u6709\uff09\u7684\u3001\u6d89\u53ca\u5230\u7b49\u5f85\u5f02\u6b65\u52a8\u4f5c\u7684 router \u4ee3\u7801\u6837\u4f8b\u91cc\uff0c\u5b8c\u5168\u7c7b\u4f3c\u7684\u4ee3\u7801\u662f\u53ef\u4ee5\u5de5\u4f5c\u7684\uff1a<\/p>\n
router.get(\r\n  '\/users\/:id',\r\n  function (ctx, next) {\r\n    return User.findOne(ctx.params.id).then(function(user) {\r\n      ctx.user = user;\r\n      return next();\r\n\r\n    });\r\n  },\r\n  function (ctx) {\r\n    console.log(ctx.user);\r\n    \/\/ => { id: 17, name: \"Alex\" }\r\n  }\r\n);<\/pre>\n
\u4e8e\u662f\u6211\u4eec\u7740\u91cd\u68c0\u67e5\u4e86 mongoose \u7684 TypeScript \u7c7b\u578b\u5b9a\u4e49\u6587\u4ef6\u3002\u8fd9\u4e2a article<\/code>\u662fArticle<\/code>\u7684\u5b9e\u4f8b\uff0c\u800cArticle<\/code>\u5b9e\u9645\u4e0a\u662f mongoose \u52a8\u6001\u6784\u9020\u51fa\u6765\u7684\u4e00\u4e2a\u7c7b\uff08\u5e94\u8be5\u662f\u901a\u8fc7\u4e86\u67d0\u79cd\u5143\u7f16\u7a0b\u6280\u672f\uff09\u3002\u5728\u7c7b\u578b\u5b9a\u4e49\u4e2d\u662f\u8fd9\u4e48\u53cd\u6620\u7684\uff1a<\/p>\n
interface Model<T extends Document> extends NodeJS.EventEmitter, ModelProperties {\r\n    new(doc?: Object): T;\r\n    \/* other things *\/\r\n}<\/pre>\n
\u800c article \u5c31\u662f\u90a3\u4e2a<T extends Document><\/code>\uff0c\u800c Document<\/code>\u7684save<\/code>\u65b9\u6cd5\u662f\u8fd9\u4e48\u5199\u7684\uff1a<\/p>\n
    \/**\r\n     * Saves this document.\r\n     * @param options options optional options\r\n     * @param options.safe overrides schema's safe option\r\n     * @param options.validateBeforeSave set to false to save without validating.\r\n     * @param fn optional callback\r\n     *\/\r\n    save(options?: SaveOptions, fn?: (err: any, product: this, numAffected: number) => void): Promise<this>;\r\n    save(fn?: (err: any, product: this, numAffected: number) => void): Promise<this>;<\/pre>\n
\uff08\u53d6\u81ea npm install @types\/mongoose<\/code>\u7684\u7ed3\u679c\uff0c\u4e0d\u77e5\u4e3a\u4f55\u4e0e DefinitelyTyped \u4e0a\u7684\u6709\u6240\u4e0d\u540c\u3002\uff09\u770b\u5230\u8fd9\uff0c\u7279\u522b\u662fPromise<this><\/code>\uff0c\u6211\u5c31\u786e\u4fe1\u4e86\uff0c\u8fd9\u4e2a\u51fd\u6570\u6ca1\u6709\u95ee\u9898\u3002\u53ef\u662f\u4e0a\u9762\u8fd4\u56de\u7684thing<\/code>\u53c8\u786e\u4e4e\u662f\u4e00\u4e2aundefined<\/code>\uff0c\u96be\u9053\u662f\u6211\u4eec\u7684\u4f7f\u7528\u59ff\u52bf\u6709\u95ee\u9898\uff1f<\/p>\n
\u4e07\u822c\u65e0\u5948\u4e4b\u4e2d\uff0cTypeScript \u4e5f\u4e0d\u9760\u8c31\u4e4b\u9645\uff0c\u6211\u4eec\u53ea\u80fd\u8bc9\u8bf8\u6e90\u7801\u4e86\u3002\u9274\u4e8e mongoose \u7684\u4ee3\u7801\u98ce\u683c\uff0c\u76f4\u63a5\u641c\u7d22 .prototype.save<\/code>\u5c31\u80fd\u627e\u5230\u3002\u5b83\u5b9e\u9645\u4e0a\u662f\u5728\u8fd9\u91cc<\/a>\uff0c\u4f46\u662f\u770b\u5230\u8fd9\u91cc\u8ba9\u4eba\u66f4\u5d29\u6e83\u4e86\uff1a<\/p>\n
Model.prototype.save = function(options, fn) {\r\n  if (typeof options === 'function') {\r\n    fn = options;\r\n    options = undefined;\r\n  }\r\n\r\n  if (!options) {\r\n    options = {};\r\n  }\r\n\r\n  if (fn) {\r\n    fn = this.constructor.$wrapCallback(fn);\r\n  }\r\n\r\n  return this.$__save(options, fn);\r\n};<\/pre>\n
\u5b83\u8fd4\u56de\u7684\u662fthis.$__save<\/code>\u7684\u7ed3\u679c\uff0c\u4f46\u8fd9\u4e2a\u51fd\u6570<\/a>\u5e76\u6ca1\u6709\u8fd4\u56de\u503c\uff01\u65e5\u5fd7\u663e\u793a\uff0c\u8fd9\u91cc\u7684this<\/code>\u5c31\u662f\u8fd9\u4e2aarticle<\/code>\u5b9e\u4f8b\uff08\u4e00\u4e2aDocument<\/code>\uff09\u3002\u7136\u800c\u7ebf\u7d22\u5230\u8fd9\u91cc\u4f3c\u4e4e\u65ad\u4e86\u3002\u600e\u4e48\u80fd\u51ed\u7a7a\u4ece\u4e00\u4e2a\u6ca1\u6709\u8fd4\u56de\u503c\u7684\u51fd\u6570\u8fd4\u56de\u4e00\u4e2a promise \u5462\uff1f<\/span><\/p>\n
\u6211\u4eec\u53c8\u60f3\u5230\u4e86\u4e00\u62db\uff1a\u67e5\u770b\u8c03\u7528\u6808\u3002\u4f46\u662f node \u7684\u8c03\u8bd5\u5668\u5728\u8fd9\u65f6\u5374\u4e0d\u597d\u4f7f\u4e86\u3002\u6211\u4eec\u53ea\u80fd\u7528\u539f\u59cb\u7c97\u66b4\u7684console.trace<\/code>\u624b\u52a8\u641e\u51fa\u8c03\u7528\u6808\u3002\u867d\u7136\u6ca1\u6709\u76f4\u63a5\u7684\u7ebf\u7d22\uff0c\u8fd9\u4e2a\u8c03\u7528\u6808\u7ed9\u4e86\u6211\u4eec\u4e00\u4e9b\u63d0\u793a\u2014\u2014save<\/code>\u5e76\u4e0d\u662f\u76f4\u63a5\u8c03\u7528\u7684\uff0c\u800c\u662f\u7ecf\u8fc7\u4e86\u67d0\u79cdhook<\/code>\u7684\u5c01\u88c5\u3002<\/p>\n
\u8fd9\u65f6\uff0c\u6211\u60f3\u5230\u4e86\u76f4\u63a5console.log(article.save)<\/code>\uff0c\u5b83\u5c45\u7136\u662f\u4e00\u4e2awrappedPointCut<\/code>\u51fa\u6765\u7684\u7ed3\u679c\uff01\u518d\u5728\u4ee3\u7801\u91cc\u641c\u7d22wrappedPointCut<\/code>\u5c31\u975e\u5e38\u63a5\u8fd1\u771f\u76f8\u4e86\u3002\u5173\u952e\u7684\u4ee3\u7801\u5728\u8fd9\u91cc<\/a>\uff1a<\/p>\n
model.prototype[pointCut] = (function(_newName) {\r\n      return function wrappedPointCut() {\r\n        var Promise = PromiseProvider.get();\r\n\r\n        var _this = this;\r\n        \/* something omitted for simplicity *\/\r\n        var promise = new Promise.ES6(function(resolve, reject) {\r\n          args.push(function(error) {\r\n            if (error) {\r\n              \/* something omitted for simplicity *\/\r\n              reject(error);\r\n              return;\r\n            }\r\n            $results = Array.prototype.slice.call(arguments, 1);\r\n            resolve.apply(promise, $results);\r\n          });\r\n          _this[_newName].apply(_this, args);\r\n        });\r\n        if (fn) {\r\n          \/* something omitted for simplicity *\/\r\n          return promise.then(\r\n            function() {\r\n              process.nextTick(function() {\r\n                fn.apply(null, [null].concat($results));\r\n              });\r\n            },\r\n            function(error) {\r\n              process.nextTick(function() {\r\n                fn(error);\r\n              });\r\n            });\r\n        }\r\n        return promise;\r\n      };\r\n    })(newName);<\/pre>\n
\u6ce8\u610f\u5230\u5982\u679c\u6ca1\u6709fn<\/code>\uff0c\u90a3\u4e48\u4f1a\u5728\u7b2c 33 \u884c\u8fd4\u56de\u7b2c 7 \u884c\u5b9a\u4e49\u7684 promise\uff0c\u5982\u679c\u6709fn<\/code>\uff0c\u5c31\u4f1a\u76f4\u63a5\u5728\u7b2c 21 \u884c\u8fd4\u56de\u63a5\u7eed\u4e4b\u524d\u7684 promise \u7684\u53e6\u4e00\u4e2a promise\uff0c\u8fd9\u4e2a\u63a5\u7eed\uff08.then()<\/code>\uff09\u91cc\u9762\u5229\u7528\u4e86fn<\/code>\u5904\u7406\u4e86\u7ed3\u679c\uff0c\u5374\u6ca1\u6709\u8fd4\u56de\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u8fd9\u65f6\u5019\u7684\u8fd4\u56de\u503c\u662fPromise<undefined><\/code>\u800c\u4e0d\u662fPromise<this><\/code>\u2014\u2014\u6211\u4eec\u88ab\u8fd9\u6837\u7684 TypeScript \u7c7b\u578b\u5b9a\u4e49\u5751\u60e8\u4e86\uff01\u5982\u679c\u5b83\u4e00\u5f00\u59cb\u5c31\u544a\u8bc9\u6211\u4eec\u4f1a\u8fd9\u6837\uff0c\u90a3\u8be5\u591a\u597d\u5440\uff0c\u5c31\u50cf\u8fd9\u6837\uff1a<\/p>\n
    save(options: SaveOptions, fn: (err: any, product: this, numAffected: number) => void): Promise<undefined>;\r\n    save(fn: (err: any, product: this, numAffected: number) => void): Promise<undefined>;\r\n    save(options?: SaveOptions): Promise<this>;\r\n    save(): Promise<this>;<\/pre>\n
2017 \u5e74 5 \u6708 4 \u65e5<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Mongoose \u7684 TypeScript \u7c7b\u578b\u5b9a\u4e49\u5e76\u4e0d\u5b8c\u5168\u6b63\u786e\uff01 \u6628\u5929\u665a\u4e0a\u5728 bgs \u7814\u7a76\u4e86\uff08\u6216\u8005\u8bf4\u8c03\u8bd5\u4e86\uff09 … Continue reading “\u4e00\u4e2a\u4e0d\u6b63\u786e\u7684 TypeScript \u7c7b\u578b\u5b9a\u4e49\u5f15\u53d1\u7684\u8840\u6848”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":318,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[15,16],"tags":[17,20,19,18,21],"_links":{"self":[{"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/posts\/298"}],"collection":[{"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/comments?post=298"}],"version-history":[{"count":25,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/posts\/298\/revisions"}],"predecessor-version":[{"id":398,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/posts\/298\/revisions\/398"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/media\/318"}],"wp:attachment":[{"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/media?parent=298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/categories?post=298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/colliot.org\/zh\/wp-json\/wp\/v2\/tags?post=298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}