{"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\/pt\/blog\/news\/vypusk-web-frejmvorka-django-3-0","title":{"rendered":"Lan\u00e7amento do framework web 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\/\">Aconteceu<\/a><\/noindex>  lan\u00e7amento do framework web <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Django 3.0<\/a><\/noindex>, escrito em Python e destinado ao desenvolvimento de aplica\u00e7\u00f5es web. A vers\u00e3o Django 3.0 foi classificada como uma vers\u00e3o com suporte regular e ser\u00e1 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/download\/#supported-versions\">a obter<\/a><\/noindex> atualizada at\u00e9 abril de 2021. A vers\u00e3o LTS 2.22 ser\u00e1 suportada at\u00e9 abril de 2022, enquanto a vers\u00e3o 1.11 at\u00e9 abril de 2020. O suporte \u00e0 vers\u00e3o 2.1 foi descontinuado. <\/p>\n<p>Principais <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">s\u00e3o<\/a><\/noindex>: <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/howto\/deployment\/asgi\/\">Foi fornecida<\/a><\/noindex> suporte para opera\u00e7\u00e3o em modo ass\u00edncrono com execu\u00e7\u00e3o na forma de aplica\u00e7\u00e3o ASGI. A interface <noindex><a rel=\"nofollow\" href=\"https:\/\/asgi.readthedocs.io\/\">ASGI<\/a><\/noindex> (Asynchronous Server Gateway Interface) foi desenvolvida como uma substitui\u00e7\u00e3o ao WSGI, voltada para garantir a intera\u00e7\u00e3o entre servidores, frameworks e aplica\u00e7\u00f5es que suportam opera\u00e7\u00e3o em modo ass\u00edncrono. O suporte para execu\u00e7\u00e3o utilizando WSGI \u00e9 mantido, e o c\u00f3digo relacionado ao modo ass\u00edncrono \u00e9 inclu\u00eddo apenas quando executado em ambientes baseados em ASGI.\n<p>Para o modo ass\u00edncrono, foi implementado um ciclo de eventos separado (event loop), no qual n\u00e3o \u00e9 permitido chamar c\u00f3digo marcado como &#171;async unsafe&#187;. Este c\u00f3digo inclui, por exemplo, opera\u00e7\u00f5es com SGBD (ORM), que n\u00e3o podem ser utilizadas em um contexto ass\u00edncrono (nesse caso, ser\u00e1 exibido um erro SynchronousOnlyOperation) e devem ser movidas para um thread sincr\u00f4nico separado.<\/p>\n<li class=\"l\"> Foram adicionados tipos enumerados especializados TextChoices, IntegerChoices e Choices, que podem ser <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#field-choices-enum-types\">utilizados<\/a><\/noindex> usados para definir campos de texto e inteiros em um modelo, por exemplo, ao precisar armazenar em campos conjuntos de r\u00f3tulos leg\u00edveis traduzidos em caracter\u00edsticas espec\u00edficas:\n<p>   class YearInSchool(models.TextChoices):<br \/>\n        FRESHMAN = &#8216;FR&#8217;, _(&#8216;Calouro&#8217;)<br \/>\n        SOPHOMORE = &#8216;SO&#8217;, _(&#8216;Segundo Ano&#8217;)<br \/>\n        JUNIOR = &#8216;JR&#8217;, _(&#8216;Terceiro Ano&#8217;)<br \/>\n        SENIOR = &#8216;SR&#8217;, _(&#8216;Quarto Ano&#8217;)<br \/>\n        GRADUATE = &#8216;GR&#8217;, _(&#8216;Graduado&#8217;)<\/p>\n<li class=\"l\"> Adicionada a capacidade de especificar express\u00f5es que retornam <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#django.db.models.BooleanField\">BooleanField<\/a><\/noindex>, diretamente em filtros QuerySet sem a necessidade de anota\u00e7\u00e3o pr\u00e9via antes da aplica\u00e7\u00e3o para filtrar as anota\u00e7\u00f5es.\n<li class=\"l\"> Suporte oficial para bancos de dados MariaDB 10.1 e vers\u00f5es mais recentes foi garantido.\n<li class=\"l\"> Para PostgreSQL, foi implementada a classe <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/contrib\/postgres\/constraints\/#django.contrib.postgres.constraints.ExclusionConstraint\">ExclusionConstraint<\/a><\/noindex> para utiliza\u00e7\u00e3o de restri\u00e7\u00f5es baseadas em express\u00f5es. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/9.0\/ddl-constraints.html\">EXCLUDE<\/a><\/noindex>;\n<li class=\"l\"> O suporte ao Python 3.5 foi descontinuado.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <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 5.0.3 - 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\/pt\/blog\/news\/vypusk-web-frejmvorka-django-3-0\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta 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