{"id":2925,"date":"2021-03-25T17:43:07","date_gmt":"2021-03-25T16:43:07","guid":{"rendered":"https:\/\/visionslabs.io\/nestjs-backend-framework-pre-webove-aplikacie\/"},"modified":"2021-04-07T23:12:24","modified_gmt":"2021-04-07T21:12:24","slug":"nestjs-backend-framework-pre-webove-aplikacie","status":"publish","type":"post","link":"https:\/\/visionslabs.io\/sk\/nestjs-backend-framework-pre-webove-aplikacie\/","title":{"rendered":"NestJS &#8211; backend framework pre webov\u00e9 aplik\u00e1cie"},"content":{"rendered":"\n<p>Ned\u00e1vno sme zverejnili staronov\u00fa <a href=\"https:\/\/visionslabs.io\/reference\/centrum-vzdelavani-cz-informacni-system-pro-vzdelavaci-spolecnost\/\" target=\"_blank\" rel=\"noreferrer noopener\">referenciu o Informa\u010dnom syst\u00e9me pre CENTRUM-VZD\u011aL\u00c1V\u00c1N\u00cd.CZ<\/a> a pr\u00e1ve v&nbsp;tomto informa\u010dnom syst\u00e9me, resp. <a href=\"https:\/\/visionslabs.io\/sk\/sluzby\/tvorba-webovych-aplikacii\/\">webovej aplik\u00e1cii<\/a>, sme ako backend \u010das\u0165 vyu\u017eili <strong>NodeJS<\/strong> framework &#8211; konkr\u00e9tne <strong>NestJS<\/strong>.<\/p>\n\n<h2 class=\"wp-block-heading\">NestJS<\/h2>\n\n<div class=\"wp-block-image\"><figure class=\"alignright size-full is-resized\"><a href=\"https:\/\/nestjs.com\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" src=\"https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/nest-js-logo.svg\" alt=\"Nest JS - node js framework\" class=\"wp-image-2846\" width=\"150\" height=\"150\"\/><\/a><figcaption>Nest JS &#8211; progressive Node.js framework<\/figcaption><\/figure><\/div>\n\n<p>Po\u010fme si najsk\u00f4r poveda\u0165, \u010do to vlastne je <a href=\"https:\/\/nestjs.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">NestJS<\/a>. Jedn\u00e1 sa o progres\u00edvne framework <a href=\"https:\/\/nodejs.org\/en\/\" target=\"_blank\" rel=\"noreferrer noopener\">Node.js<\/a> pre vytv\u00e1ranie efekt\u00edvnych, spo\u013eahliv\u00fdch a \u0161k\u00e1lovate\u013en\u00fdch aplik\u00e1ci\u00ed na strane servera. In\u00fdmi slovami sa jedn\u00e1 o framework pre vytv\u00e1ranie backendov\u00fdch aplik\u00e1ci\u00ed. Medzi z\u00e1kladn\u00e9 charakteristiky <strong>NestJS<\/strong> patr\u00ed, \u017ee sa pou\u017e\u00edva <strong><a href=\"https:\/\/www.typescriptlang.org\/\" target=\"_blank\" rel=\"noreferrer noopener\">TypeScript<\/a><\/strong> a \u0161trukt\u00fara k\u00f3du je ve\u013emi podobn\u00e1 <strong><a href=\"https:\/\/angular.io\/\">Angular<\/a><\/strong>. Z&nbsp;t\u00fdchto ind\u00edcii jasne vych\u00e1dza, \u017ee <strong>NestJS<\/strong> je ide\u00e1lny backend framework pre v\u00fdvoj\u00e1rov, ktor\u00ed u\u017e maj\u00fa sk\u00fasenosti s&nbsp;<strong>ANGULAR<\/strong>, preto\u017ee m\u00f4\u017eu vyu\u017ei\u0165 svoje znalosti z&nbsp;frontend v\u00fdvoja v&nbsp;<strong>TypeScriptu<\/strong>.<\/p>\n\n<p>\u010eal\u0161\u00edm d\u00f4le\u017eit\u00fdm aspektom je v\u00fdborn\u00e1 dokument\u00e1cia a \u017eiv\u00e1 komunita. Ak by sme chceli napr\u00edklad porovn\u00e1va\u0165 s&nbsp;<em>PHP frameworkom Apigility<\/em>, ktor\u00fd sme pou\u017e\u00edvali predt\u00fdm, tak sa to ani ned\u00e1 porovna\u0165 &#8211; naozaj &#8222;0 a 100&#8220;. <strong>NestJS<\/strong> je skvele dokumentovan\u00fd na adrese <a href=\"https:\/\/docs.nestjs.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/docs.nestjs.com\/<\/a>, kde okrem &#8222;te\u00f3rie&#8220; s\u00fa aj odpor\u00fa\u010dan\u00e9 postupy. A komunita &#8211; t\u00e1 je akt\u00edvna na platforme <a href=\"https:\/\/discord.gg\/G7Qnnhy\" target=\"_blank\" rel=\"noreferrer noopener\">Discord<\/a>. Zauj\u00edmavosti je, \u017ee <strong>NestJS<\/strong> framework poch\u00e1dza od na\u0161ich &#8222;susedov&#8220; z&nbsp;Po\u013eska a stoj\u00ed za n\u00edm spolo\u010dnos\u0165 <strong><a href=\"https:\/\/trilon.io\/\" target=\"_blank\" rel=\"noreferrer noopener\">Trilon<\/a><\/strong>.<\/p>\n\n<h3 class=\"wp-block-heading\">Uk\u00e1\u017eka k\u00f3du z&nbsp;webu https:\/\/nestjs.com\/<\/h3>\n\n<iframe src=\"https:\/\/codesandbox.io\/embed\/nest-jjo90y00xw?autoresize=1&#038;fontsize=14&#038;hidenavigation=1&#038;module=%2Fsrc%2Fapp.controller.ts&#038;theme=dark&#038;view=editor\" style=\"width:100%; height:500px; border:0; border-radius: 4px; overflow:hidden;\" title=\"Nest \" allow=\"accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking\" sandbox=\"allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts\"><\/iframe>\n\n<h2 class=\"wp-block-heading\">\u010eal\u0161ie charakteristiky<\/h2>\n\n<ul class=\"wp-block-list\"><li>S\u00fa\u010das\u0165ou NestJS je tie\u017e zabudovan\u00e9 <strong>CLI<\/strong>, ktor\u00e9 m\u00f4\u017ee program\u00e1torom ve\u013emi u\u0161etri\u0165 pr\u00e1cu pri tvorbe k\u00f3du, ke\u010f napr\u00edklad ve\u013emi u\u017eito\u010dn\u00fd pr\u00edkaz &#8222;n<em>est g recourses NAME<\/em>&#8220; vytvor\u00ed cel\u00fd boilerplate k\u00f3d pre CRUD endpoint.<\/li><li>Predvolen\u00fd HTTP server je <a href=\"https:\/\/expressjs.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">Express<\/a>, ale je mo\u017enos\u0165 prepn\u00fa\u0165 na <a href=\"https:\/\/github.com\/fastify\/fastify\" target=\"_blank\" rel=\"noreferrer noopener\">Fastify<\/a>.<\/li><li>Z h\u013eadiska datab\u00e1z pracuje ako s&nbsp;<strong>SQL<\/strong>, tak s&nbsp;<strong>NoSQL<\/strong> servermi. Tak\u017ee m\u00f4\u017eete pou\u017ei\u0165 napr\u00edklad ako MySQL, tak i <a href=\"https:\/\/www.mongodb.com\/\">MongoDB<\/a>.<\/li><li>D\u00e1 sa pou\u017e\u00edva\u0165 s&nbsp;r\u00f4znymi kni\u017enicami ako je napr\u00edklad <strong>TypeORM<\/strong>, <strong>Prisma<\/strong> alebo <strong>Swagger<\/strong>.<\/li><li>Nie je probl\u00e9m pou\u017e\u00edva\u0165 NestJS ako <strong>REST API<\/strong> alebo <strong>GraphQL API<\/strong>.<\/li><\/ul>\n\n<h2 class=\"wp-block-heading\">\u0160trukt\u00fara k\u00f3du NestJS<\/h2>\n\n<p>Framework <strong>NestJS<\/strong> pre &#8222;nevidite\u013en\u00fa&#8220; \u010dast webov\u00e9 aplik\u00e1cie, tzn. backend, je tvoren\u00fd hlavne &#8222;<strong><a href=\"https:\/\/docs.nestjs.com\/controllers\" target=\"_blank\" rel=\"noreferrer noopener\">controllers<\/a><\/strong>&#8222;, \u010do s\u00fa jednotliv\u00e9 end-pointy, ktor\u00e9 sa ozna\u010duj\u00fa pomocou anot\u00e1cie, tzn. napr. <em>@get (&#8222;home&#8220;)<\/em>, pr\u00edpadne <em>@post (&#8222;car \/: id&#8220;)<\/em>, \u010do zna\u010d\u00ed parametrizovan\u00e1 endpoint. Tak\u017ee k\u00f3d je navy\u0161e ve\u013emi preh\u013eadn\u00fd v\u010faka tomu, \u017ee v&nbsp;<strong>controllers<\/strong> sa v\u00e4\u010d\u0161inou iba volaj\u00fa konkr\u00e9tne <strong>services<\/strong>, kde je a\u017e samotn\u00e1 logika aplik\u00e1cie. <\/p>\n\n<p><a href=\"https:\/\/docs.nestjs.com\/security\/authentication\" target=\"_blank\" rel=\"noreferrer noopener\">Autentifik\u00e1cia<\/a> sa rie\u0161i pomocou strat\u00e9gie, kde m\u00f4\u017eeme vyu\u017ei\u0165 \u0161abl\u00f3ny \u0161tandardizovan\u00fdch procesov, ako je napr\u00edklad JWT (JSON Web Token). Pre n\u00e1sledn\u00fa <a href=\"https:\/\/docs.nestjs.com\/security\/authorization\" target=\"_blank\" rel=\"noreferrer noopener\">autoriz\u00e1ciu<\/a> a zabezpe\u010denie kontroly pr\u00edstupu k&nbsp;jednotliv\u00fdm koncov\u00fdm ukazovate\u013eom sl\u00fa\u017eia <strong>guards<\/strong>, resp. anot\u00e1cie <em>@Roles ().<\/em><\/p>\n\n<h2 class=\"wp-block-heading\">Z\u00e1kladn\u00fd kurz priamo od tvorcov NestJS<\/h2>\n\n<p>\u010co m\u00f4\u017eeme ur\u010dite odporu\u010di\u0165, je priamo on-line kurz formou vopred nahran\u00fdch videi\u00ed priamo od tvorcov NestJS. Video kurz n\u00e1jdete na adrese <a href=\"https:\/\/courses.nestjs.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/courses.nestjs.com\/<\/a>, kde aktu\u00e1lne za $ 89 dostanete cca 5 hodinov\u00fd obsah. <\/p>\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-us_600_400\"><a ref=\"magnificPopup\" href=\"https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/NestJS-webove-aplikace-ukazak-z-video-kurzu.png\"><img decoding=\"async\" width=\"600\" height=\"335\" src=\"https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/NestJS-webove-aplikace-ukazak-z-video-kurzu-600x335.png\" alt=\"NestJS webov&#xE9; aplik&#xE1;cie - uk&#xE1;&#x17E;ka z video kurzu\" class=\"wp-image-2906\" srcset=\"https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/NestJS-webove-aplikace-ukazak-z-video-kurzu-600x335.png 600w, https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/NestJS-webove-aplikace-ukazak-z-video-kurzu-300x167.png 300w, https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/NestJS-webove-aplikace-ukazak-z-video-kurzu-1024x572.png 1024w, https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/NestJS-webove-aplikace-ukazak-z-video-kurzu.png 1141w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/a><figcaption>Verejn\u00e1 uk\u00e1\u017eka z&nbsp;video kurzu z&nbsp;webu https:\/\/courses.nestjs.com\/<\/figcaption><\/figure><\/div>\n\n<h2 class=\"wp-block-heading\">Spustenie NestJS aplik\u00e1cie na vlastnom serveri<\/h2>\n\n<p>Na z\u00e1ver v\u00e1m e\u0161te m\u00f4\u017eeme zhrn\u00fa\u0165, ako sprev\u00e1dzkova\u0165 aplik\u00e1cie na svojom vlastnom serveri, preto\u017ee pod\u013ea prieskumu na internete to nie je u\u017e tak be\u017en\u00e9. \u010castej\u0161ie rie\u0161enie je pustenie v&nbsp;<em>Google Cloud Platform<\/em>, <em>Amazon Web Services<\/em> alebo in\u00e9 cloudovej platforme pre sp\u00fa\u0161\u0165anie &#8222;konternej\u016f&#8220;. Pre spustenie Node.js aplik\u00e1cie, tak\u017ee aj NestJS aplik\u00e1cie na linux servera je potrebn\u00e9 aplik\u00e1cie <a href=\"https:\/\/pm2.keymetrics.io\/\" target=\"_blank\" rel=\"noreferrer noopener\">PM2<\/a>.<\/p>\n\n<ul class=\"wp-block-list\"><li>in\u0161tal\u00e1cia PM2 na linuxu, za predpokladu \u017ee Node a NPM u\u017e na serveri s\u00fa &#8211; <code><strong>npm install pm2 -g<\/strong><\/code><\/li><li>prelo\u017eenie aplik\u00e1cie pre produk\u010dn\u00e9 spustenie &#8211; <code><strong>npm run build<\/strong><\/code><\/li><li>spustenie aplik\u00e1cie pomocou PM2 &#8211; <code><strong>pm2 start main.js --name MY_NAME<\/strong><\/code><\/li><\/ul>\n\n<p>A potom e\u0161te m\u00f4\u017eeme uk\u00e1za\u0165 jednoduch\u00fa \u0161abl\u00f3nu pre nastavenie Apache2 VirtualHost s&nbsp;t\u00fdm, \u017ee PORT_NUMBER je \u010d\u00edslo portu pod ktor\u00fdm NestJS aplik\u00e1ciu sp\u00fa\u0161\u0165ate.<\/p>\n\n<pre class=\"wp-block-code\"><code>&lt;VirtualHost *:80&gt;\n  ServerName domain.com\n\n  ProxyPreserveHost On\n  ProxyPass \/ http:\/\/localhost:PORT_NUMBER\/\n  ProxyPassReverse \/ http:\/\/localhost:PORT_NUMBER\/\n&lt;\/VirtualHost&gt;<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Ned\u00e1vno sme zverejnili staronov\u00fa referenciu o Informa\u010dnom syst\u00e9me pre CENTRUM-VZD\u011aL\u00c1V\u00c1N\u00cd.CZ a pr\u00e1ve v&nbsp;tomto informa\u010dnom syst\u00e9me, resp. webovej aplik\u00e1cii, sme ako backend \u010das\u0165 vyu\u017eili NodeJS framework &#8211; konkr\u00e9tne NestJS. NestJS Po\u010fme si najsk\u00f4r poveda\u0165, \u010do to vlastne je NestJS. Jedn\u00e1 sa o progres\u00edvne framework Node.js pre vytv\u00e1ranie efekt\u00edvnych, spo\u013eahliv\u00fdch a \u0161k\u00e1lovate\u013en\u00fdch aplik\u00e1ci\u00ed na strane servera. In\u00fdmi&#8230;<\/p>\n","protected":false},"author":1,"featured_media":2917,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[259,193],"tags":[260,271,270,262,274,269,264,266,273,263,267],"class_list":["post-2925","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-webove-aplikacie","category-zaujimavosti","tag-angular-sk","tag-apache2-sk","tag-express-sk","tag-graphql-sk","tag-mongodb-sk","tag-mysql-sk","tag-nestjs-sk","tag-node-js-sk","tag-pm2-sk-2","tag-rest-api-sk","tag-typescript-sk"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NestJS - backend framework pre webov\u00e9 aplik\u00e1cie - visionslabs<\/title>\n<meta name=\"description\" content=\"NestJS je Node.js framework pre p\u00edsanie backend webov\u00fdch aplik\u00e1ci\u00ed a to s mo\u017enos\u0165ou p\u00edsania v TypeScript a vyu\u017eitie princ\u00edpu z Angular.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/visionslabs.io\/sk\/nestjs-backend-framework-pre-webove-aplikacie\/\" \/>\n<meta property=\"og:locale\" content=\"sk_SK\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NestJS - backend framework pre webov\u00e9 aplik\u00e1cie - visionslabs\" \/>\n<meta property=\"og:description\" content=\"NestJS je Node.js framework pre p\u00edsanie backend webov\u00fdch aplik\u00e1ci\u00ed a to s mo\u017enos\u0165ou p\u00edsania v TypeScript a vyu\u017eitie princ\u00edpu z Angular.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/visionslabs.io\/sk\/nestjs-backend-framework-pre-webove-aplikacie\/\" \/>\n<meta property=\"og:site_name\" content=\"visionslabs\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/visionslabs\/\" \/>\n<meta property=\"article:published_time\" content=\"2021-03-25T16:43:07+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-04-07T21:12:24+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/visionslabs.io\/wp-content\/uploads\/2021\/03\/visionslabs-NestJS-backend-framework-pro-webove-aplikace.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"630\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Leopold Podmol\u00edk\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@visionslabs\" \/>\n<meta name=\"twitter:site\" content=\"@visionslabs\" \/>\n<meta name=\"twitter:label1\" content=\"Autor\" \/>\n\t<meta name=\"twitter:data1\" content=\"Leopold Podmol\u00edk\" \/>\n\t<meta name=\"twitter:label2\" content=\"Predpokladan\u00fd \u010das \u010d\u00edtania\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 min\u00faty\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/visionslabs.io\\\/sk\\\/nestjs-backend-framework-pre-webove-aplikacie\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/visionslabs.io\\\/sk\\\/nestjs-backend-framework-pre-webove-aplikacie\\\/\"},\"author\":{\"name\":\"Leopold Podmol\u00edk\",\"@id\":\"https:\\\/\\\/visionslabs.io\\\/sk\\\/#\\\/schema\\\/person\\\/8002ebaef6052f50e66a94371d7764c9\"},\"headline\":\"NestJS &#8211; 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