{"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\/de\/blog\/novosti-interneta\/vypusk-web-frejmvorka-django-3-0","title":{"rendered":"Ver\u00f6ffentlichung des Web-Frameworks 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\/\">Es fand<\/a><\/noindex>  Ver\u00f6ffentlichung des Webframeworks <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Django 3.0<\/a><\/noindex>, entwickelt in Python und gedacht f\u00fcr die Erstellung von Webanwendungen. Die Django 3.0-Version geh\u00f6rt zur Kategorie der regul\u00e4ren Support-Releases und wird <noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/download\/#supported-versions\">abfragen<\/a><\/noindex> bis April 2021 aktualisiert. Die LTS-Version 2.22 wird bis April 2022 unterst\u00fctzt, und Version 1.11 bis April 2020. Der Support f\u00fcr die Version 2.1 wurde eingestellt. <\/p>\n<p>Schl\u00fcssige <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Verbesserungen<\/a><\/noindex>: <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/howto\/deployment\/asgi\/\">Es wurde<\/a><\/noindex> unterst\u00fctzt den Betrieb im asynchronen Modus mit Ausf\u00fchrung als ASGI-Anwendung. Die Programmierschnittstelle <noindex><a rel=\"nofollow\" href=\"https:\/\/asgi.readthedocs.io\/\">ASGI<\/a><\/noindex> (Asynchronous Server Gateway Interface) wurde als Ersatz f\u00fcr WSGI entwickelt und zielt darauf ab, die Interoperabilit\u00e4t von Servern, Frameworks und Anwendungen, die im asynchronen Modus funktionieren, sicherzustellen. Die Unterst\u00fctzung f\u00fcr den Start mit WSGI bleibt erhalten, und der mit dem asynchronen Modus verbundene Code wird nur bei Ausf\u00fchrung in ASGI-basierenden Umgebungen einbezogen.\n<p>F\u00fcr den asynchronen Modus wurde eine separate Ereignisschleife (event loop) implementiert, in der die Ausf\u00fchrung von als \u201easync unsafe\u201c gekennzeichnetem Code nicht zul\u00e4ssig ist. Zu diesem Code geh\u00f6ren beispielsweise Datenbankoperationen (ORM), die im asynchronen Kontext nicht verwendet werden k\u00f6nnen (in diesem Fall wird ein Fehler SynchronousOnlyOperation ausgegeben) und in einen separaten synchronen Thread ausgelagert werden sollten.<\/p>\n<li class=\"l\"> Es wurden spezialisierte auflistbare Typen wie TextChoices, IntegerChoices und Choices hinzugef\u00fcgt, die verwendet werden k\u00f6nnen <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#field-choices-enum-types\">eingesetzt zu werden.<\/a><\/noindex> um textuelle und ganzzahlige Felder im Modell zu definieren, beispielsweise wenn es erforderlich ist, lesbare Labels in Feldern zu speichern, die in bestimmte Merkmale \u00fcbersetzt werden:\n<p>   class YearInSchool(models.TextChoices):<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\"> Die M\u00f6glichkeit zur Angabe von Ausdr\u00fccken wurde hinzugef\u00fcgt, die <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#django.db.models.BooleanField\">BooleanField<\/a><\/noindex>, direkt in QuerySet-Filtern ohne vorherige Anmerkung, vor der Anwendung zur Filterung von Anmerkungen, ausgegeben werden k\u00f6nnen.\n<li class=\"l\"> Offizielle Unterst\u00fctzung f\u00fcr die Datenbank MariaDB 10.1 und neuere Versionen wurde bereitgestellt.\n<li class=\"l\"> F\u00fcr PostgreSQL wurde die Klasse <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/contrib\/postgres\/constraints\/#django.contrib.postgres.constraints.ExclusionConstraint\">ExclusionConstraint<\/a><\/noindex> f\u00fcr die Verwendung von ausdrucksbasierten Einschr\u00e4nkungen implementiert. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/9.0\/ddl-constraints.html\">AUSSCHLIE\u00dfEN<\/a><\/noindex>;\n<li class=\"l\"> Die Unterst\u00fctzung f\u00fcr Python 3.5 wurde eingestellt.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Quelle: <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-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - 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\/de\/blog\/novosti-interneta\/vypusk-web-frejmvorka-django-3-0\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.0.1\" 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