{"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\/sk\/blog\/news\/vypusk-web-frejmvorka-django-3-0","title":{"rendered":"Vydanie webov\u00e9ho r\u00e1mca 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\/\">Sa uskuto\u010dnilo<\/a><\/noindex>  uvo\u013enenie webov\u00e9ho r\u00e1mca <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Django 3.0<\/a><\/noindex>, nap\u00edsan\u00e9ho v programovacom jazyku Python a ur\u010den\u00e9ho na v\u00fdvoj webov\u00fdch aplik\u00e1ci\u00ed. Vetva Django 3.0 patr\u00ed do kateg\u00f3rie vydan\u00ed s be\u017enou podporou a bude <noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/download\/#supported-versions\">dost\u00e1va\u0165<\/a><\/noindex> aktualiz\u00e1cie do apr\u00edla 2021. Vetva LTS 2.22 bude podporovan\u00e1 do apr\u00edla 2022, a vetva 1.11 do apr\u00edla 2020. Podpora vetvy 2.1 bola ukon\u010den\u00e1. <\/p>\n<p>K\u013e\u00fa\u010dov\u00e9 <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">vylep\u0161enia<\/a><\/noindex>: <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/howto\/deployment\/asgi\/\">Poskytla<\/a><\/noindex> podpora pr\u00e1ce v asynchr\u00f3nnom re\u017eime s vykon\u00e1van\u00edm vo forme aplik\u00e1cie ASGI. Programov\u00e9 rozhranie <noindex><a rel=\"nofollow\" href=\"https:\/\/asgi.readthedocs.io\/\">ASGI<\/a><\/noindex> (Asynchronous Server Gateway Interface) bolo vyvinut\u00e9 ako n\u00e1hrada WSGI, zameran\u00e1 na zabezpe\u010denie interakcie serverov, r\u00e1mcov a aplik\u00e1ci\u00ed, podporuj\u00facich pr\u00e1cu v asynchr\u00f3nnom re\u017eime. Podpora spustenia s pou\u017eit\u00edm WSGI zost\u00e1va, a s\u00favisiaci asynchr\u00f3nny k\u00f3d sa zahrnie len pri spusten\u00ed v prostrediach zalo\u017een\u00fdch na ASGI.\n<p>Pre asynchr\u00f3nny re\u017eim je implementovan\u00fd samostatn\u00fd cyklus spracovania udalost\u00ed (event loop), v ktorom nie je povolen\u00e9 vyvol\u00e1va\u0165 k\u00f3d ozna\u010den\u00fd ako &#171;async unsafe&#187;. K tak\u00e9mu k\u00f3du patr\u00ed napr\u00edklad oper\u00e1cie s DBMS (ORM), ktor\u00e9 nie je mo\u017en\u00e9 pou\u017ei\u0165 v asynchr\u00f3nnom kontexte (v tomto pr\u00edpade sa zobraz\u00ed chyba SynchronousOnlyOperation), a mali by sa prenies\u0165 do samostatn\u00e9ho synchronn\u00e9ho vl\u00e1kna.<\/p>\n<li class=\"l\"> Pridan\u00e9 \u0161pecializovan\u00e9 vymenovate\u013en\u00e9 typy TextChoices, IntegerChoices a Choices, ktor\u00e9 je mo\u017en\u00e9 <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#field-choices-enum-types\">pou\u017ei\u0165<\/a><\/noindex> pou\u017ei\u0165 na ur\u010denie textov\u00fdch a celo\u010d\u00edseln\u00fdch pol\u00ed v modeli, napr\u00edklad pri potrebe uchova\u0165 v poliach s\u00fapravy \u010ditate\u013en\u00fdch ozna\u010den\u00ed, ktor\u00e9 sa prekladaj\u00fa do ur\u010dit\u00fdch znakov:\n<p>   class YearInSchool(models.TextChoices):<br \/>\n        FRESHMAN = &#8216;FR&#8217;, _(&#8216;Prv\u00e1k&#8217;)<br \/>\n        SOPHOMORE = &#8216;SO&#8217;, _(&#8216;Druh\u00e1k&#8217;)<br \/>\n        JUNIOR = &#8216;JR&#8217;, _(&#8216;Tret\u00ed\u00e1k&#8217;)<br \/>\n        SENIOR = &#8216;SR&#8217;, _(&#8216;\u0160tvrt\u00e1k&#8217;)<br \/>\n        GRADUATE = &#8216;GR&#8217;, _(&#8216;Absolvent&#8217;)<\/p>\n<li class=\"l\"> Pridan\u00e1 mo\u017enos\u0165 ur\u010denia v\u00fdrazov, ktor\u00e9 vyprodukuj\u00fa <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#django.db.models.BooleanField\">BooleanField<\/a><\/noindex>, priamo vo filtroch QuerySet bez ich predch\u00e1dzaj\u00facej anot\u00e1cie, pred pou\u017eit\u00edm na filtrovanie anot\u00e1ci\u00ed.\n<li class=\"l\"> Poskytovan\u00e1 ofici\u00e1lna podpora pre datab\u00e1zov\u00fd syst\u00e9m MariaDB 10.1 a nov\u0161ie verzie.\n<li class=\"l\"> Pre PostgreSQL bol implementovan\u00fd trieda <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/contrib\/postgres\/constraints\/#django.contrib.postgres.constraints.ExclusionConstraint\">ExclusionConstraint<\/a><\/noindex> na pou\u017eitie obmedzen\u00ed na b\u00e1ze v\u00fdrazu <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/9.0\/ddl-constraints.html\">EXCLUDE<\/a><\/noindex>;\n<li class=\"l\"> Podpora Python 3.5 bola ukon\u010den\u00e1.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Zdroj: <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 5.0.5 - 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\/sk\/blog\/news\/vypusk-web-frejmvorka-django-3-0\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.5\" \/>\n\t\t<meta 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