{"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\/it\/blog\/novosti-interneta\/vypusk-web-frejmvorka-django-3-0","title":{"rendered":"Rilascio del web framework 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\/\">Si \u00e8 svolto<\/a><\/noindex>  rilascio del web framework <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">Django 3.0<\/a><\/noindex>, scritto in linguaggio Python e destinato allo sviluppo di applicazioni web. Il ramo Django 3.0 \u00e8 classificato come versione con supporto normale e ricever\u00e0 <noindex><a rel=\"nofollow\" href=\"https:\/\/www.djangoproject.com\/download\/#supported-versions\">aggiornamenti fino ad aprile 2021. Il ramo LTS 2.22 sar\u00e0 supportato fino ad aprile 2022, mentre il ramo 1.11 fino ad aprile 2020. Il supporto per il ramo 2.1 \u00e8 stato interrotto.<\/a><\/noindex> aggiornamenti fino ad aprile 2021. Il ramo LTS 2.22 sar\u00e0 supportato fino ad aprile 2022, mentre il ramo 1.11 fino ad aprile 2020. Il supporto per il ramo 2.1 \u00e8 terminato. <\/p>\n<p>Chiave <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/releases\/3.0\/\">miglioramenti<\/a><\/noindex>: <\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/howto\/deployment\/asgi\/\">Fornito<\/a><\/noindex> supporto per il funzionamento in modalit\u00e0 asincrona con esecuzione sotto forma di applicazione ASGI. L'interfaccia <noindex><a rel=\"nofollow\" href=\"https:\/\/asgi.readthedocs.io\/\">ASGI<\/a><\/noindex> (Asynchronous Server Gateway Interface) \u00e8 stata sviluppata come sostituto del WSGI, mirata a garantire l'interazione tra server, framework e applicazioni che supportano il funzionamento in modalit\u00e0 asincrona. Il supporto per l'esecuzione utilizzando WSGI \u00e8 mantenuto, e il codice relativo alla modalit\u00e0 asincrona viene incluso solo quando si avvia in ambienti basati su ASGI.\n<p>Per la modalit\u00e0 asincrona \u00e8 implementato un ciclo di eventi separato (event loop), in cui non \u00e8 consentito chiamare codice contrassegnato come \u2018async unsafe\u2019. Tale codice include, ad esempio, operazioni con il database (ORM), che non possono essere utilizzate in un contesto asincrono (in questo caso verr\u00e0 visualizzato l'errore SynchronousOnlyOperation) e devono essere eseguite in un thread sincrono separato.<\/p>\n<li class=\"l\"> Sono stati aggiunti tipi enumerativi specializzati TextChoices, IntegerChoices e Choices, che possono <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#field-choices-enum-types\">utilizzare<\/a><\/noindex> essere utilizzati per definire campi di testo e interi nel modello, ad esempio, quando \u00e8 necessario memorizzare nei campi insiemi di etichette leggibili, tradotte in specifiche caratteristiche:\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\"> \u00c8 stata aggiunta la possibilit\u00e0 di specificare espressioni che producono <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.djangoproject.com\/en\/3.0\/ref\/models\/fields\/#django.db.models.BooleanField\">BooleanField<\/a><\/noindex>, direttamente nei filtri del QuerySet senza la necessit\u00e0 di annotarli preventivamente, prima di applicarli per filtrare le annotazioni.\n<li class=\"l\"> \u00c8 stato fornito supporto ufficiale per i DBMS MariaDB 10.1 e versioni pi\u00f9 recenti.\n<li class=\"l\"> Per PostgreSQL \u00e8 stata realizzata la 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> per utilizzare restrizioni basate su espressioni. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.postgresql.org\/docs\/9.0\/ddl-constraints.html\">EXCLUDE<\/a><\/noindex>;\n<li class=\"l\"> Il supporto per Python 3.5 \u00e8 terminato.\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-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\/it\/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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