{"id":53653,"date":"2019-12-07T00:00:00","date_gmt":"2019-12-06T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vypusk-web-frejmvorka-django-3-0"},"modified":"2020-02-18T14:01:35","modified_gmt":"2020-02-18T11:01:35","slug":"vypusk-web-frejmvorka-django-3-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-web-frejmvorka-django-3-0","title":{"rendered":"Wydanie frameworka webowego Django 3.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/weblog\/2019\/dec\/02\/django-3-released\/\">Zdarzy\u0142o si\u0119<\/a><\/noindex>  wydanie frameworka webowego <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Django 3.0<\/a><\/noindex>, napisanego w j\u0119zyku Python i przeznaczonego do tworzenia aplikacji internetowych. Ga\u0142\u0105\u017a Django 3.0 zosta\u0142a zakwalifikowana jako wydanie z normalnym okresem wsparcia i b\u0119dzie <noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/download\/#supported-versions\">uzyska\u0107<\/a><\/noindex> aktualizowana do kwietnia 2021 roku. Ga\u0142\u0105\u017a LTS 2.22 b\u0119dzie wspierana do kwietnia 2022 roku, a ga\u0142\u0105\u017a 1.11 do kwietnia 2020 roku. Wsparcie dla ga\u0142\u0119zi 2.1 zosta\u0142o zako\u0144czone. <\/p>\n<p>Kluczowe <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">ulepszenia<\/a><\/noindex>: <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/howto\/deployment\/asgi\/\">Dostarczono<\/a><\/noindex> wsparcie dla pracy w trybie asynchronicznym z uruchomieniem w formie aplikacji ASGI. Interfejs programowania <noindex><a rel=\"nofollow\" href=\"https:\/\/asgi.readthedocs.io\/\">ASGI<\/a><\/noindex> (Asynchronous Server Gateway Interface) zosta\u0142 stworzony jako zast\u0105pienie WSGI, maj\u0105ce na celu zapewnienie interakcji mi\u0119dzy serwerami, frameworkami i aplikacjami, kt\u00f3re obs\u0142uguj\u0105 tryb asynchroniczny. Wsparcie dla uruchamiania z u\u017cyciem WSGI zosta\u0142o zachowane, a zwi\u0105zany z trybem asynchronicznym kod jest do\u0142\u0105czany tylko podczas uruchamiania w \u015brodowiskach opartych na ASGI.\n<p>Dla trybu asynchronicznego zaimplementowano oddzieln\u0105 p\u0119tl\u0119 zdarze\u0144 (event loop), w kt\u00f3rej nie dopuszcza si\u0119 wywo\u0142ywania kodu oznaczonego jako &#171;async unsafe&#187;. Do takiego kodu nale\u017c\u0105 na przyk\u0142ad operacje z baz\u0105 danych (ORM), kt\u00f3rych nie mo\u017cna u\u017cywa\u0107 w kontek\u015bcie asynchronicznym (w takim przypadku wy\u015bwietlany b\u0119dzie b\u0142\u0105d SynchronousOnlyOperation) i powinny by\u0107 przenoszone do oddzielnego w\u0105tku synchronizowanego.<\/p>\n<li class=\"l\"> Dodano specjalizowane typy enumeracji TextChoices, IntegerChoices i Choices, kt\u00f3re mo\u017cna <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#field-choices-enum-types\">ju\u017c trzeba co\u015b wykorzysta\u0107 (pracuj\u0119 z klastrowym Proxmox VE 5.x i ZFS over iSCSI).<\/a><\/noindex> u\u017cywa\u0107 do definiowania p\u00f3l tekstowych i ca\u0142kowitych w modelu, na przyk\u0142ad, gdy konieczne jest przechowywanie w polach zbior\u00f3w czytelnych etykiet, t\u0142umaczonych na okre\u015blone cechy:\n<p>   class YearInSchool(models.TextChoices):<br \/>\n        FRESHMAN = &#8216;FR&#8217;, _(&#8216;Freshman&#8217;)<br \/>\n        SOPHOMORE = &#8216;SO&#8217;, _(&#8216;Sophomore&#8217;)<br \/>\n        JUNIOR = &#8216;JR&#8217;, _(&#8216;Junior&#8217;)<br \/>\n        SENIOR = &#8216;SR&#8217;, _(&#8216;Senior&#8217;)<br \/>\n        GRADUATE = &#8216;GR&#8217;, _(&#8216;Graduate&#8217;)<\/p>\n<li class=\"l\"> Dodano mo\u017cliwo\u015b\u0107 wskazywania wyra\u017ce\u0144, kt\u00f3re zwracaj\u0105 <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#django.db.models.BooleanField\">BooleanField<\/a><\/noindex>, bezpo\u015brednio w filtrach QuerySet bez wcze\u015bniejszego ich anotowania, przed zastosowaniem do filtrowania anotacji.\n<li class=\"l\"> Zapewniono oficjalne wsparcie dla baz danych MariaDB 10.1 i nowszych wyda\u0144.\n<li class=\"l\"> Dla PostgreSQL zaimplementowano klas\u0119 <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/contrib\/postgres\/constraints\/#django.contrib.postgres.constraints.ExclusionConstraint\">ExclusionConstraint<\/a><\/noindex> do u\u017cycia ogranicze\u0144 na podstawie wyra\u017cenia <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/9.0\/ddl-constraints.html\">WY\u0141\u0104CZAJ<\/a><\/noindex>;\n<li class=\"l\"> Zako\u0144czono wsparcie dla Pythona 3.5.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51989\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 web-\u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 Django 3.0, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Python \u0438 \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0432\u0435\u0431-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. \u0412\u0435\u0442\u043a\u0430 Django 3.0 \u043e\u0442\u043d\u0435\u0441\u0435\u043d\u0430 \u043a \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438 \u0432\u044b\u043f\u0443\u0441\u043a\u043e\u0432 \u0441 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u0441\u0440\u043e\u043a\u043e\u043c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0438 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0430\u0442\u044c \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2021 \u0433\u043e\u0434\u0430. LTS-\u0432\u0435\u0442\u043a\u0430 2.22 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2022 \u0433\u043e\u0434\u0430, \u0430 \u0432\u0435\u0442\u043a\u0430 1.11 \u0434\u043e \u0430\u043f\u0440\u0435\u043b\u044f 2020 \u0433\u043e\u0434\u0430. \u041f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0432\u0435\u0442\u043a\u0438 2.1 \u043f\u0440\u0435\u043a\u0440\u0430\u0449\u0435\u043d\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u044f: \u041f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-53653","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0440\u0435\u043b\u0438\u0437 web-\u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-web-frejmvorka-django-3-0\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.1.1\" \/>\n\t\t<meta 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