{"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\/es\/blog\/news\/vypusk-web-frejmvorka-django-3-0","title":{"rendered":"Lanzamiento del marco 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\/\">Se realiz\u00f3<\/a><\/noindex>  lanzamiento del marco web <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Django 3.0<\/a><\/noindex>, escrito en el lenguaje Python y dise\u00f1ado para el desarrollo de aplicaciones web. La rama Django 3.0 se clasifica como un lanzamiento con soporte est\u00e1ndar y recibir\u00e1 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/download\/#supported-versions\">actualizaciones hasta abril de 2021. La rama LTS 2.22 ser\u00e1 compatible hasta abril de 2022, mientras que la rama 1.11 ser\u00e1 compatible hasta abril de 2020. El soporte para la rama 2.1 se ha terminado.<\/a><\/noindex> soporte para funcionamiento en modo as\u00edncrono con ejecuci\u00f3n en forma de aplicaci\u00f3n ASGI. La interfaz <\/p>\n<p>Mejoras clave <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">mejoras<\/a><\/noindex>: <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/howto\/deployment\/asgi\/\">Se ha proporcionado<\/a><\/noindex> ASGI <noindex><a rel=\"nofollow\" href=\"https:\/\/asgi.readthedocs.io\/\">(Interfaz As\u00edncrona de Servidor de Puerta) se desarroll\u00f3 como un reemplazo de WSGI, destinada a facilitar la interacci\u00f3n entre servidores, marcos y aplicaciones que soportan operaciones en modo as\u00edncrono. Se mantiene el soporte para ejecutar utilizando WSGI, y el c\u00f3digo relacionado con el modo as\u00edncrono solo se incluye al ejecutarse en entornos basados en ASGI.<\/a><\/noindex> Para el modo as\u00edncrono se ha implementado un ciclo separado de procesamiento de eventos (event loop), en el cual no se permite la invocaci\u00f3n de c\u00f3digo marcado como \u00abasync unsafe\u00bb. Este c\u00f3digo incluye, por ejemplo, operaciones con bases de datos (ORM) que no se pueden utilizar en un contexto as\u00edncrono (en este caso se mostrar\u00e1 el error SynchronousOnlyOperation) y deben ser trasladadas a un hilo sincr\u00f3nico separado.\n<p>Para el modo as\u00edncrono se ha implementado un ciclo de procesamiento de eventos (event loop) separado, en el que no se permite llamar a c\u00f3digo marcado como \u00abasync unsafe\u00bb. Este tipo de c\u00f3digo incluye, por ejemplo, operaciones con bases de datos (ORM), que no se pueden usar en un contexto as\u00edncrono (en este caso se mostrar\u00e1 un error SynchronousOnlyOperation) y deben realizarse en un hilo sincr\u00f3nico separado.<\/p>\n<li class=\"l\"> usar para definir campos textuales e integeros en el modelo, por ejemplo, cuando sea necesario almacenar en los campos conjuntos de etiquetas legibles, traducidas a ciertos atributos: <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#field-choices-enum-types\">utilizar<\/a><\/noindex> class YearInSchool(models.TextChoices):\n<p>   FRESHMAN = \u2018FR\u2019, _(\u2018Freshman\u2019)<br \/>\n        FRESHMAN = 'FR', _ ('Freshman')<br \/>\n        SOPHOMORE = 'SO', _ ('Sophomore')<br \/>\n        JUNIOR = 'JR', _ ('Junior')<br \/>\n        SENIOR = 'SR', _ ('Senior')<br \/>\n        GRADUATE = 'GR', _ ('Graduate')<\/p>\n<li class=\"l\"> BooleanField <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#django.db.models.BooleanField\">, directamente en los filtros QuerySet sin necesidad de anotarlos previamente antes de aplicar la filtraci\u00f3n de anotaciones.<\/a><\/noindex>Se ha proporcionado soporte oficial para la base de datos MariaDB 10.1 y versiones posteriores.\n<li class=\"l\"> Para PostgreSQL se ha implementado la clase\n<li class=\"l\"> ExclusionConstraint <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/contrib\/postgres\/constraints\/#django.contrib.postgres.constraints.ExclusionConstraint\">para utilizar restricciones basadas en expresiones.<\/a><\/noindex> Se ha terminado el soporte para Python 3.5. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/9.0\/ddl-constraints.html\">EXCLUDE<\/a><\/noindex>;\n<li class=\"l\"> \u00bfQu\u00e9 salarios ofrecieron los empleadores a los especialistas en TI en el segundo semestre de 2019?\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fuente: <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 5.0.2 - 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\/es\/blog\/news\/vypusk-web-frejmvorka-django-3-0\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.2\" \/>\n\t\t<meta property=\"og:locale\" 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