{"id":49741,"date":"2023-11-29T10:22:12","date_gmt":"2023-10-25T07:05:49","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86%e6%ad%a3%e5%9c%a8%e8%bf%90%e8%a1%8c%e7%9a%84-django-1-7-%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%8d%87%e7%ba%a7%e5%88%b0-django-1-8%e3%80%82\/"},"modified":"2024-05-04T11:17:29","modified_gmt":"2024-05-04T03:17:29","slug":"%e5%b0%86%e6%ad%a3%e5%9c%a8%e8%bf%90%e8%a1%8c%e7%9a%84-django-1-7-%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%8d%87%e7%ba%a7%e5%88%b0-django-1-8%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%86%e6%ad%a3%e5%9c%a8%e8%bf%90%e8%a1%8c%e7%9a%84-django-1-7-%e5%ba%94%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%8d%87%e7%ba%a7%e5%88%b0-django-1-8%e3%80%82\/","title":{"rendered":"\u5c06\u6b63\u5728\u8fd0\u884c\u7684 Django 1.7 \u5e94\u7528\u7a0b\u5e8f\u5347\u7ea7\u5230 Django 1.8"},"content":{"rendered":"<h2>\u8fd9\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u8fd9\u662fmixi\u56e2\u4f53\u5723\u8bde\u65e5\u5386\u7684\u7b2c\u4e8c\u5929\u3002<\/p>\n<p>\u7531MIXI Group\u8fd0\u8425\u7684\u300cTicket Camp\u300d\u4f7f\u7528Python\u548cDjango\u8fdb\u884c\u670d\u52a1\u5668\u7aef\u5f00\u53d1\u3002<\/p>\n<p>\u73b0\u5728\u4f7f\u7528\u7684Django\u7248\u672c\u662f1.7.11\uff0c\u4ee5\u4e0b\u662f\u5347\u7ea7\u81f3Django 1.8\u65f6\u6240\u8fdb\u884c\u7684\u64cd\u4f5c\u8bb0\u5f55\u3002<\/p>\n<p>\u6211\u8ba4\u4e3aTicketCamp\u6709\u5b83\u81ea\u5df1\u72ec\u7279\u7684\u5730\u65b9\uff0c\u4f46\u5982\u679c\u5bf9\u8003\u8651\u66f4\u65b0Django\u7684\u4eba\u6709\u6240\u5e2e\u52a9\u7684\u8bdd\uff0c\u6211\u4f1a\u611f\u5230\u975e\u5e38\u5e78\u798f\u3002<\/p>\n<h2>\u7968\u52a1\u7f51\u7ad9TicketCamp\u7684\u7248\u672c\u5347\u7ea7\u653f\u7b56\u3002<\/h2>\n<p>\u5c31Ticket Camp\u7684\u6846\u67b6\u548c\u5e93\u7684\u66f4\u65b0\u7b56\u7565\u800c\u8a00\uff0c\u867d\u7136\u6709\u4e00\u4e9b\u9700\u8981\u4f9d\u8d56\u6211\u7684\u76f4\u89c9\u7684\u90e8\u5206\uff0c\u5f88\u96be\u660e\u786e\u8868\u8ff0\uff0c\u4f46\u603b\u7684\u6765\u8bf4\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e09\u6761\u89c4\u5219\u6765\u89e3\u91ca\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306f\u51fa\u6765\u308b\u9650\u308a\u65e9\u671f\u306b\u9069\u7528<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">Django\u306e\u30e1\u30b8\u30e3\u30fc\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u306b\u306f\u51fa\u6765\u308b\u9650\u308a\u8ffd\u5f93<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u305d\u308c\u4ee5\u5916\u306b\u7406\u7531\u304c\u306a\u3044\u9650\u308a\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3057\u306a\u3044<\/ul>\n<p>\u53ea\u8981\u6ca1\u6709\u7279\u6b8a\u539f\u56e0\uff0c\u7b2c\u4e09\u4e2a\u9009\u9879\u662f\u542b\u7cca\u4e0d\u6e05\u7684\uff0c\u5b83\u53ef\u80fd\u5305\u62ec\u201c\u60f3\u8981\u4f7f\u7528X\u529f\u80fd\uff0c\u4f46\u8fd9\u79cd\u60c5\u51b5\u4e0b\u9700\u8981\u5c06Y\u5e93\u5347\u7ea7\u5230\u6700\u65b0\u7248\u672c\u201d\u7684\u6848\u4f8b\uff0c\u5176\u4e2d\u539f\u56e0\u662f\u660e\u786e\u7684\uff1b\u7136\u800c\u4e5f\u6709\u8fd9\u6837\u7684\u60c5\u51b5\uff0c\u4f8b\u5982\u201c\u7531\u4e8e\u6709\u9700\u8981\u4fee\u590d\u56fe\u7247\u4e0a\u4f20API\u7684\u4e8b\u9879\uff0c\u6240\u4ee5\u987a\u4fbf\u4e5f\u5347\u7ea7\u4e86Pillow\u5e93\u201d\uff0c\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u5e76\u6ca1\u6709\u6bd4\u201c\u987a\u4fbf\u63d0\u5347\u4e86\u201d\u7684\u66f4\u6df1\u5c42\u6b21\u7684\u539f\u56e0\u3002<\/p>\n<p>\u65e0\u8bba\u5982\u4f55\uff0c\u6211\u60f3\u5f3a\u8c03\u7684\u662f\u6211\u4eec\u5e76\u6ca1\u6709\u91c7\u53d6\u201c\u7981\u6b62\u5347\u7ea7\u7248\u672c\u201d\u7684\u7b56\u7565\u8fdb\u884c\u5f00\u53d1\u3002<\/p>\n<p>\u4f5c\u4e3a\u4e00\u4e2a\u4f7f\u7528Django\u4ece1.0\u7248\u672c\u4ee5\u524d\u5c31\u5f00\u59cb\u7684\u4eba\u6765\u8bf4\uff0c\u6211\u4e00\u76f4\u575a\u6301\u8ddf\u8fdb\u6700\u65b0\u7248\u672c\uff0c\u8fd9\u662f\u56e0\u4e3a\u4fdd\u6301\u5e94\u7528\u7a0b\u5e8f\u7684\u5065\u5168\u6027\uff0c\u5e76\u4e14\u57fa\u4e8e\u6211\u6240\u83b7\u5f97\u7684\u7ecf\u9a8c\uff0c\u5f53\u5b9e\u9645\u9700\u8981\u66f4\u65b0\u65f6\uff0c\u8fd9\u6837\u505a\u6700\u7ec8\u4f1a\u66f4\u52a0\u8f7b\u677e\u3002<\/p>\n<p>\u57fa\u4e8e\u8fd9\u4e2a\u89d2\u5ea6\uff0c\u6211\u4eceDjango 1.8\u7684Beta\u9636\u6bb5\u5c31\u60f3\u8981\u8fdb\u884c\u5347\u7ea7\uff0c\u4f46\u662f\u9047\u5230\u4e86\u4e00\u4e9b\u5347\u7ea7\u7684\u969c\u788d\uff0c\u4e00\u76f4\u6ca1\u6709\u52a8\u624b\u3002\u5728\u8fd9\u6837\u7684\u60c5\u51b5\u4e0b\uff0cDjango 1.9\u7684RC\u7248\u672c\u5df2\u7ecf\u53d1\u5e03\u4e86\uff0c\u6240\u4ee5\u6211\u610f\u8bc6\u5230\u8fd9\u662f\u4e00\u4e2a\u95ee\u9898\uff0c\u7ec8\u4e8e\u5f00\u59cb\u8ba4\u771f\u5730\u5347\u7ea7\u7248\u672c\u4e86\u3002<\/p>\n<p>\u5f53\u6211\u70b9\u51fb\u53d1\u5e03\u6309\u94ae\u67e5\u770b\u6b64\u6587\u7ae0\u65f6\uff0c\u53d1\u73b0Django\u5df2\u7ecf\u53d1\u5e03\u4e861.9\u7248\u672c\u3002<\/p>\n<h2>\u5347\u7ea7\u5230Django 1.8\u6240\u9700\u8981\u7684\u4fee\u6b63\u5de5\u4f5c\u3002<\/h2>\n<h3>\u66f4\u65b0\u6700\u65b0\u7248\u672c\u7684\u82b9\u83dc<\/h3>\n<p>\u5728TicketCamp\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86Python\u4e2d\u5e38\u7528\u7684Celery\u4f5c\u4e3a\u4f5c\u4e1a\u961f\u5217\uff0c\u901a\u8fc7AWS SNS\u53d1\u9001\u63a8\u9001\u901a\u77e5\u4ee5\u53ca\u4e0e\u5916\u90e8\u7f51\u7edc\u8fdb\u884cI\/O\u7684\u64cd\u4f5c\u3002\u53e6\u5916\uff0c\u6211\u4eec\u8fd8\u5229\u7528Celery\u7684\u5de5\u4f5c\u8fdb\u7a0b\u6765\u5904\u7406\u9700\u8981\u4e00\u5b9a\u65f6\u95f4\u7684\u4efb\u52a1\uff0c\u6bd4\u5982\u7968\u5238\u7684\u4e0a\u67b6\u548c\u8bf7\u6c42\u7684\u5339\u914d\u5904\u7406\u3002<\/p>\n<p>\u7531\u4e8e\u5c06Django\u7248\u672c\u5347\u7ea7\u52301.8\u540e\uff0c\u4e4b\u524d\u4f7f\u7528\u7684celery==3.1.7\u51fa\u73b0\u4e86\u9519\u8bef\uff0c\u6240\u4ee5\u6211\u5c06\u5176\u66f4\u65b0\u5230\u6700\u65b0\u7248\u672c\u7684celery==3.1.9\u3002<\/p>\n<pre class=\"post-pre\"><code>pip install --upgrade celery==3.1.9\r\n<\/code><\/pre>\n<p>\u7531\u4e8eCelery\u975e\u5e38\u7a33\u5b9a\u4e14\u7528\u6237\u4f17\u591a\uff0c\u56e0\u6b64\u5bf9\u4e8e\u5c0f\u578b\u66f4\u65b0\u5e76\u4e0d\u611f\u5230\u592a\u591a\u98ce\u9669\u3002<\/p>\n<h3>\u5c06django_nose\u5347\u7ea7\u5230\u6700\u65b0\u7248\u672c\u3002<\/h3>\n<p>\u5728\u8fdb\u884c\u5355\u5143\u6d4b\u8bd5\u65f6\uff0c\u6211\u4f7f\u7528\u7684\u6d4b\u8bd5\u8fd0\u884c\u5668\u4e0d\u662fDjango\u7684\u6807\u51c6\u8fd0\u884c\u5668\uff0c\u800c\u662f\u4f7f\u7528\u4e86django_nose\u7684\u6d4b\u8bd5\u8fd0\u884c\u5668\u3002<\/p>\n<p>\u56e0\u4e3a\u8fd9\u4e5f\u662f\u56fa\u5b9a\u5728\u7a0d\u65e7\u7684\u7248\u672c\u4e0a\uff0c\u6240\u4ee5\u51fa\u73b0\u4e86\u9519\u8bef\uff0c\u6240\u4ee5\u6211\u66f4\u65b0\u5230\u6700\u65b0\u7248\u7684django_nose==1.4.2\u3002<\/p>\n<pre class=\"post-pre\"><code>pip install --upgrade django_nose==1.4.2\r\n<\/code><\/pre>\n<h3>\u5c06TEST_NAME\u66f4\u6539\u4e3aTEST<\/h3>\n<p>\u7531\u4e8eDjango 1.7\u7248\u672c\u8d77\uff0c\u6d4b\u8bd5\u6570\u636e\u5e93\u7684\u914d\u7f6e\u65b9\u5f0f\u5df2\u4eceTEST_\u524d\u7f00\u66f4\u6539\u4e3a\u4f7f\u7528\u72ec\u7acb\u7684\u5b57\u5178TEST\uff0c\u56e0\u6b64\u5728\u6b64\u65f6\u8981\u8fdb\u884c\u4fee\u6b63\u3002<\/p>\n<p>\u4fee\u8ba2\u4e4b\u524d\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">DATABASES<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"s\">'default'<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"s\">'ENGINE'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'django.db.backends.mysql'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s\">'USER'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'root'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s\">'NAME'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'ticketcamp_dev'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s\">'TEST_NAME'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'test_ticketcamp_dev'<\/span><span class=\"p\">,<\/span>\r\n    <span class=\"p\">},<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6821\u6b63\u5b8c\u6bd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">DATABASES<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n    <span class=\"s\">'default'<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n        <span class=\"s\">'ENGINE'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'django.db.backends.mysql'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s\">'USER'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'root'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s\">'NAME'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'ticketcamp_dev'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"s\">'TEST'<\/span><span class=\"p\">:<\/span> <span class=\"p\">{<\/span>\r\n            <span class=\"s\">'NAME'<\/span><span class=\"p\">:<\/span> <span class=\"s\">'test_ticketcamp_dev'<\/span><span class=\"p\">,<\/span>\r\n        <span class=\"p\">},<\/span>\r\n    <span class=\"p\">},<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<h3>loader.get_template_from_string\u4e0d\u5b58\u5728\u4e86<\/h3>\n<p>\u5728TicketCamp\u4e2d\uff0c\u53ea\u6709\u4e00\u4e2a\u5730\u65b9\u4f7f\u7528\u4e86\u540d\u4e3adjango.template.loader.get_template_from_string\u7684\u65b9\u6cd5\u3002<\/p>\n<p>\u6700\u7b80\u5355\u7684\u793a\u8303\u4ee3\u7801\u5982\u4e0b\u3002<\/p>\n<pre class=\"post-pre\"><code>from django.template import loader, Context\r\n\r\ntmpl = loader.get_template_from_string(content)\r\noutput = tmpl.render(Context(ctxt))\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0b\u4e3a\u4e2d\u6587\u7684\u539f\u751f\u7248\u672c\uff0c<\/p>\n<p>\u8fd9\u6bb5\u4ee3\u7801\uff0c<\/p>\n<pre class=\"post-pre\"><code>AttributeError: 'module' object has no attribute 'get_template_from_string'\r\n<\/code><\/pre>\n<p>\u6211\u5f00\u59cb\u51fa\u73b0\u4e86\u8fd9\u4e2a\u9519\u8bef\u3002<\/p>\n<p>\u636e\u6211\u6240\u77e5\uff0c\u770b\u8d77\u6765Django 1.8\u4e2d\u5220\u9664\u4e86django.template.loader.get_template_from_string\u3002<\/p>\n<p>\u5728Django\u4e2d\uff0c\u65b9\u6cd5\u7a81\u7136\u88ab\u5220\u9664\u662f\u7f55\u89c1\u7684\u60c5\u51b5\uff0c\u7edd\u5bf9\u4e0d\u4f1a\u53d1\u751f\u5728\u516c\u5f00\u7684API\u4e2d\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u88ab\u5f03\u7528\u7684\u8b66\u544a\u5c06\u5728Django 1.x\u4e2d\u4ea7\u751f\uff0c\u56e0\u6b64\u5728\u65e5\u5e38\u5f00\u53d1\u4e2d\u4f1a\u81ea\u7136\u5730\u610f\u8bc6\u5230\u3002<\/p>\n<p>\u90a3\u4e48\uff0c\u8fd9\u4e2a\u65b9\u6cd5\u5e76\u4e0d\u662f\u516c\u5f00\u65b9\u6cd5\uff0c\u800c\u662f\u79c1\u6709\u65b9\u6cd5\u3002<\/p>\n<p>\u5f88\u5e78\u8fd0\u5730\uff0c\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u53ea\u9700\u8981\u5c06loader.get_template_from_string\u66ff\u6362\u4e3aTemplate\u5c31\u53ef\u4ee5\u8f7b\u677e\u89e3\u51b3\u3002<\/p>\n<pre class=\"post-pre\"><code>from django.template import Template, Context\r\n\r\ntmpl = Template(content)\r\noutput = tmpl.render(Context(ctxt))\r\n<\/code><\/pre>\n<h3>\u51fa\u73b0\u4e86ForeignKey(unique=True)\u7684\u8b66\u544a<\/h3>\n<p>\u5728Ticket Camp\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528django.contrib.auth\u8fdb\u884c\u7528\u6237\u6ce8\u518c\u548c\u7528\u6237\u8ba4\u8bc1\u3002\u7136\u800c\uff0c\u7531\u4e8e\u5f00\u53d1\u59cb\u4e8eDjango 1.4\u65f6\u4ee3\uff0c\u4e3a\u4e86\u8ba9\u7528\u6237\u6dfb\u52a0\u989d\u5916\u4fe1\u606f\uff0c\u6211\u4eec\u4ecd\u7136\u4f7f\u7528Profile\u5bf9\u8c61\u6a21\u5f0f\u3002<\/p>\n<p>\u8fd9\u662f\u4e00\u4e2a\u7c7b\u4f3c\u4ee5\u4e0b\u4ee3\u7801\u7684\u793a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\"># -*- coding: utf-8 -*-\r\n# \u3053\u306e\u30b3\u30fc\u30c9\u306b\u306f\u7f60\u304c\u3042\u308b\u306e\u3067\u771f\u4f3c\u3057\u306a\u3044\u3053\u3068\uff01\r\n<\/span><span class=\"kn\">from<\/span> <span class=\"nn\">django.conf<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">settings<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">django.db<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">models<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Profile<\/span><span class=\"p\">(<\/span><span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">Model<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">user<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">ForeignKey<\/span><span class=\"p\">(<\/span><span class=\"n\">settings<\/span><span class=\"p\">.<\/span><span class=\"n\">AUTH_USER_MODEL<\/span><span class=\"p\">,<\/span> <span class=\"n\">unique<\/span><span class=\"o\">=<\/span><span class=\"bp\">True<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"c1\"># \u7701\u7565\r\n<\/span><\/code><\/pre>\n<p>\u5f53\u5c06Django\u7248\u672c\u66f4\u65b0\u81f31.8\u5e76\u8fd0\u884cCelery\u7684\u5de5\u4eba\u65f6\uff0c\u5c31\u4f1a\u51fa\u73b0\u4ee5\u4e0b\u8b66\u544a\u3002<\/p>\n<pre class=\"post-pre\"><code>myapp.Profile.user: (fields.W342) Setting unique=True on a ForeignKey has the same effect as using a OneToOneField.\r\n    HINT: ForeignKey(unique=True) is usually better served by a OneToOneField.\r\n<\/code><\/pre>\n<p>\u6211\u521a\u5230\u8fd9\u91cc\u624d\u77e5\u9053\uff0c\u9996\u5148\u4e0a\u9762\u7684\u4ee3\u7801\u662f<\/p>\n<pre class=\"post-pre\"><code><span class=\"c1\"># -*- coding: utf-8 -*-\r\n<\/span><span class=\"kn\">from<\/span> <span class=\"nn\">django.conf<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">settings<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">django.db<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">models<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Profile<\/span><span class=\"p\">(<\/span><span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">Model<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">user<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">OneToOneField<\/span><span class=\"p\">(<\/span><span class=\"n\">settings<\/span><span class=\"p\">.<\/span><span class=\"n\">AUTH_USER_MODEL<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"c1\"># \u7701\u7565\r\n<\/span><\/code><\/pre>\n<p>\u770b\u8d77\u6765\u5e94\u8be5\u4f7f\u7528OneToOneField()\u800c\u4e0d\u662fForeignKey(unique=True)\u3002\u800c\u4e14\u7531\u4e8e\u5728\u6700\u521d\u9636\u6bb5\u4ea7\u751f\u4e86\u8bef\u89e3\uff0c\u56e0\u6b64\u5728\u8bb8\u591a\u5730\u65b9\u51fa\u73b0\u4e86\u7c7b\u4f3c\u7684\u8b66\u544a\u3002<\/p>\n<p>\u6839\u636e\u8b66\u544a\u4e2d\u7684\u63d0\u793a\uff0c\u53ea\u9700\u5c06OneToOneField()\u8fdb\u884c\u66f4\u6539\uff0c\u6211\u5c31\u80fd\u591f\u5229\u7528\u8fd9\u4e2a\u673a\u4f1a\u5bf9\u5168\u90e8\u8fdb\u884c\u4fee\u6b63\u3002<\/p>\n<h3>DateTimeField\u7684default\u3001auto_now\u548cauto_now_add\u5c5e\u6027\u5df2\u88ab\u6392\u9664\u4e86\u3002<\/h3>\n<p>\u4ece\u8fd9\u91cc\u5f00\u59cb\u662f\u66f4\u65b0\u7684\u56f0\u96be\u90e8\u5206\u3002<\/p>\n<p>TicketCamp\u7684\u6a21\u578b\u5b9a\u4e49\u5927\u81f4\u5982\u4e0b\u6a21\u5f0f\uff0c\u5176\u4e2d\u7684created_at\u548cupdated_at\u5206\u522b\u4ee3\u8868\u6a21\u578b\u7684\u521b\u5efa\u65e5\u671f\u548c\u66f4\u65b0\u65e5\u671f\uff0c\u8fd9\u4e9b\u65e5\u671f\u4f1a\u81ea\u52a8\u66f4\u65b0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">django.db<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">models<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Ticket<\/span><span class=\"p\">(<\/span><span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">Model<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">price<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">IntegerField<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">count<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">IntegerField<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">created_at<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">DateTimeField<\/span><span class=\"p\">(<\/span><span class=\"n\">default<\/span><span class=\"o\">=<\/span><span class=\"n\">timezone<\/span><span class=\"p\">.<\/span><span class=\"n\">now<\/span><span class=\"p\">,<\/span> <span class=\"n\">auto_now_add<\/span><span class=\"o\">=<\/span><span class=\"bp\">True<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">updated_at<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">DateTimeField<\/span><span class=\"p\">(<\/span><span class=\"n\">default<\/span><span class=\"o\">=<\/span><span class=\"n\">timezone<\/span><span class=\"p\">.<\/span><span class=\"n\">now<\/span><span class=\"p\">,<\/span> <span class=\"n\">auto_now<\/span><span class=\"o\">=<\/span><span class=\"bp\">True<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u8bd5\u56fe\u5728Django 1.8\u4e2d\u8fd0\u884c\u5305\u542b\u6b64\u7c7b\u6a21\u578b\u5b9a\u4e49\u7684\u4ee3\u7801\u65f6\uff0cCelery\u7684\u5de5\u4f5c\u7a0b\u5e8f\u56e0\u4ee5\u4e0b\u9519\u8bef\u800c\u65e0\u6cd5\u542f\u52a8\u3002<\/p>\n<pre class=\"post-pre\"><code>myapp.Ticket.created_at: (fields.E160) The options auto_now, auto_now_add, and default are mutually exclusive. Only one of these options may be present.\r\nmyapp.Ticket.updated_at: (fields.E160) The options auto_now, auto_now_add, and default are mutually exclusive. Only one of these options may be present.\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u9519\u8bef\u4fe1\u606f\u6240\u6307\u51fa\u7684\u539f\u56e0\uff0cauto_now\u3001auto_now_add\u548cdefault\u662f\u4e92\u65a5\u7684\u9009\u9879\uff0c\u4e0d\u80fd\u540c\u65f6\u6307\u5b9a\u3002<\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u6211\u8003\u8651\u4e86\u4ee5\u4e0b\u89e3\u51b3\u65b9\u6848\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u4ee5\u524d\u3068\u540c\u3058\u3088\u3046\u306a\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u73fe\u5728\u6642\u523b\u304c\u5165\u308a\u3001\u30e2\u30c7\u30eb\u4fdd\u5b58\u6642\u306b\u4f5c\u6210\u65e5\u6642\u30fb\u66f4\u65b0\u65e5\u6642\u304c\u66f4\u65b0\u3055\u308c\u308b\u3088\u3046\u306aDateTimeField\u3092\u81ea\u524d\u3067\u4f5c\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30e2\u30c7\u30eb\u306e\u5b9a\u7fa9\u306fupdated_at = models.DateTimeField(default=timezone.now)\u3068\u3057\u3001MySQL\u4e0a\u306e\u30b9\u30ad\u30fc\u30de\u306e\u5b9a\u7fa9\u3092updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP\u306e\u3088\u3046\u306b\u5f37\u5236\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>updated_at\u306e\u521d\u671f\u5024\u304cNone\u306b\u306a\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u3092\u8a31\u5bb9\u3059\u308b\u3002<\/p>\n<p>\u6839\u636e\u4ee5\u4e0b\u4e24\u4e2a\u7406\u7531\uff0c\u6211\u9009\u62e9\u4e0d\u81ea\u5df1\u7f16\u5199\u4ee3\u7801\uff0c\u5e76\u4e14\u8ba4\u4e3aDjango\u5bf9\u8fd9\u6837\u7684\u66f4\u6539\u505a\u4e86auto_now\u3001auto_now_add\u548cdefault\u7684\u540c\u65f6\u6307\u5b9a\uff0c\u56e0\u6b64\u5f88\u96be\u5b9e\u73b0\u4e00\u4e2a\u5408\u9002\u7684\u5b9e\u73b0\u65b9\u5f0f\uff0c\u56e0\u6b64\u6211\u653e\u5f03\u6df1\u5165\u7814\u7a76\uff1a<br \/>\n&#8211; \u6211\u4e0d\u60f3\u81ea\u5df1\u7f16\u5199\u4ee3\u7801\u3002<br \/>\n&#8211; \u63a8\u6d4bDjango\u8fdb\u884c\u4e86\u8fd9\u6837\u7684\u66f4\u6539\uff0c\u589e\u52a0\u4e86auto_now\u3001auto_now_add\u548cdefault\u7684\u540c\u65f6\u6307\u5b9a\u3002<\/p>\n<p>\u7b2c\u4e8c\u4e2a\u9009\u62e9\u662f\u57fa\u4e8e\u8fd9\u6837\u4e00\u4e2a\u9884\u6d4b\uff0c\u5373\u4ee3\u7801\u7684\u66f4\u6539\u8f83\u5c11\uff0c\u5bf9\u5e94\u7528\u7a0b\u5e8f\u7684\u5f71\u54cd\u4e5f\u8f83\u5c0f\u3002\u7136\u800c\uff0c\u6211\u4eec\u51b3\u5b9a\u6682\u65f6\u6401\u7f6e\u8fd9\u4e00\u9009\u62e9\uff0c\u56e0\u4e3a\u5b83\u4e0e\u6211\u4eec\u4e00\u76f4\u91c7\u7528\u7684\u8bbe\u8ba1\u539f\u5219\u76f8\u77db\u76fe\uff1a\u201c\u5c3d\u91cf\u4e0d\u5b9a\u4e49\u5728Django\u6a21\u578b\u4e2d\u65e0\u6cd5\u8868\u8fbe\u7684\u67b6\u6784\u201d\u3002<\/p>\n<p>\u76ee\u524d\u6b63\u5728\u8fdb\u884c\u7b2c\u4e09\u9879\u4fee\u6b63\u7b56\u7565\uff0c\u5e76\u8fdb\u884c\u66f4\u65b0\u6d4b\u8bd5\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728\u4e0a\u9762\u7684\u6a21\u578b\u793a\u4f8b\u4e2d\uff0c\u53ef\u4ee5\u5b89\u5168\u5730\u5220\u9664created_at\u5b57\u6bb5\u7684auto_now_add=True\u9009\u9879\u3002<\/p>\n<p>\u5728\u521b\u5efa\u6a21\u578b\u5b9e\u4f8b\u7684\u65f6\u5019\uff0c\u9ed8\u8ba4\u9009\u9879\u7684timezone.now\u88ab\u8bc4\u4f30\u5e76\u5c06\u5176\u503c\u8bbe\u4e3acreated_at\u7684\u5f53\u524d\u65f6\u95f4\u3002\u8c03\u7528save()\u65b9\u6cd5\u65f6\uff0c\u8be5\u503c\u5c06\u88ab\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u4e2d\u3002(\u8003\u8651\u5230\u8fd9\u4e00\u70b9\uff0c\u6211\u8ba4\u4e3aauto_now_add=True\u672c\u8eab\u5c31\u662f\u4e0d\u5fc5\u8981\u7684\u3002)<\/p>\n<p>\u95ee\u9898\u5728\u4e8eupdated_at\u8fd9\u4e00\u65b9\u9762\u3002<\/p>\n<pre class=\"post-pre\"><code>updated_at = models.DateTimeField(default=timezone.now)\r\n<\/code><\/pre>\n<p>\u8981\u4e48&#8230;\u8981\u4e48&#8230;<\/p>\n<p>(Translate: Either&#8230;or&#8230;)<\/p>\n<pre class=\"post-pre\"><code>updated_at = models.DateTimeField(auto_now=True)\r\n<\/code><\/pre>\n<p>\u5fc5\u987b\u9009\u62e9\u662f\u8fd8\u662f\u4e0d\u662f\u3002<\/p>\n<p>\u5982\u679c\u9009\u62e9\u524d\u8005\uff0c\u5f53\u521b\u5efa\u5b9e\u4f8b\u65f6\uff0cupdated_at\u5c06\u4e3a\u975eNone\uff0c\u4f46\u662f\u5373\u4f7f\u8c03\u7528save()\u51fd\u6570\uff0c\u6570\u636e\u5e93\u4e2d\u7684updated_at\u5217\u4e5f\u4e0d\u4f1a\u66f4\u65b0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"n\">python<\/span> <span class=\"n\">manage<\/span><span class=\"p\">.<\/span><span class=\"n\">py<\/span> <span class=\"n\">shell<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"kn\">from<\/span> <span class=\"nn\">myapp.models<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Ticket<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Ticket<\/span><span class=\"p\">(<\/span><span class=\"n\">price<\/span><span class=\"o\">=<\/span><span class=\"mi\">1000<\/span><span class=\"p\">,<\/span> <span class=\"n\">count<\/span><span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">updated_at<\/span> <span class=\"ow\">is<\/span> <span class=\"ow\">not<\/span> <span class=\"bp\">None<\/span>\r\n<span class=\"bp\">True<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">save<\/span><span class=\"p\">()<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">price<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">1500<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">save<\/span><span class=\"p\">()<\/span>  <span class=\"c1\"># \u5909\u66f4\u3057\u305f\u3051\u3069DB\u306eupdated_at\u306f\u66f4\u65b0\u3055\u308c\u306a\u3044\r\n<\/span><\/code><\/pre>\n<p>\u6211\u8003\u8651\u4f7f\u7528post_save\u4fe1\u53f7\u6765\u66f4\u65b0updated_at\u5b57\u6bb5\uff0c\u4f46\u7531\u4e8e\u96be\u4ee5\u627e\u51fa\u539f\u56e0\uff0c\u53ef\u80fd\u4f1a\u5f15\u8d77\u56f0\u96be\u7684\u6545\u969c\uff0c\u6240\u4ee5\u51b3\u5b9a\u653e\u5f03\u8fd9\u79cd\u65b9\u6cd5\u3002<\/p>\n<p>\u9009\u62e9\u540e\u8005`DateTimeField(auto_now=True)`\u7684\u7f3a\u70b9\u662f\uff0c\u5f53\u521b\u5efa\u5b9e\u4f8b\u65f6\uff0c`updated_at`\u7684\u503c\u4e3a`None`\uff0c\u53ea\u6709\u5728\u8c03\u7528`save()`\u65b9\u6cd5\u65f6\uff0c\u624d\u4f1a\u5c06\u5f53\u524d\u65f6\u95f4\u66f4\u65b0\u5230\u5b9e\u4f8b\u7684`updated_at`\u5c5e\u6027\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"n\">python<\/span> <span class=\"n\">manage<\/span><span class=\"p\">.<\/span><span class=\"n\">py<\/span> <span class=\"n\">shell<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"kn\">from<\/span> <span class=\"nn\">myapp.models<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Ticket<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Ticket<\/span><span class=\"p\">(<\/span><span class=\"n\">price<\/span><span class=\"o\">=<\/span><span class=\"mi\">1000<\/span><span class=\"p\">,<\/span> <span class=\"n\">count<\/span><span class=\"o\">=<\/span><span class=\"mi\">1<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">updated_at<\/span> <span class=\"ow\">is<\/span> <span class=\"ow\">not<\/span> <span class=\"bp\">None<\/span>\r\n<span class=\"bp\">False<\/span>  <span class=\"c1\"># updated_at\u306f\u307e\u3060None\r\n<\/span><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">save<\/span><span class=\"p\">()<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">ticket<\/span><span class=\"p\">.<\/span><span class=\"n\">updated_at<\/span> <span class=\"ow\">is<\/span> <span class=\"ow\">not<\/span> <span class=\"bp\">None<\/span>\r\n<span class=\"bp\">True<\/span>   <span class=\"c1\"># save()\u3092\u547c\u3093\u3060\u5f8c\u306b\u521d\u3081\u3066\u975eNone\u306b\u306a\u308b\r\n<\/span><\/code><\/pre>\n<p>\u6362\u53e5\u8bdd\u8bf4\uff0c\u5982\u679c\u5728\u8c03\u7528save()\u4e4b\u524d\u5b58\u5728\u5f15\u7528\u5b9e\u4f8b\u7684updated_at\u7684\u4ee3\u7801\uff0c\u90a3\u4e48\u53ef\u80fd\u5bfc\u81f4\u5176\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<p>\u5c3d\u7ba1\u5982\u6b64\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u4f18\u52a3\u4e4b\u5904\uff0c\u6700\u7ec8\u6211\u4eec\u8ba4\u4e3a\u6700\u540e\u4e00\u79cd\u65b9\u6cd5\u7b26\u5408\u6846\u67b6\u5f00\u53d1\u8005\u8bbe\u60f3\u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u56e0\u6b64\u6211\u4eec\u51b3\u5b9a\u91c7\u7528\u6700\u540e\u4e00\u79cd\u65b9\u6cd5\uff0c\u5e76\u6309\u7167\u4ee5\u4e0b\u7684\u65b9\u5f0f\u8fdb\u884c\u4fee\u6539\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">django.db<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">models<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Ticket<\/span><span class=\"p\">(<\/span><span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">Model<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">price<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">IntegerField<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">count<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">IntegerField<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">created_at<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">DateTimeField<\/span><span class=\"p\">(<\/span><span class=\"n\">default<\/span><span class=\"o\">=<\/span><span class=\"n\">timezone<\/span><span class=\"p\">.<\/span><span class=\"n\">now<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"n\">updated_at<\/span> <span class=\"o\">=<\/span> <span class=\"n\">models<\/span><span class=\"p\">.<\/span><span class=\"n\">DateTimeField<\/span><span class=\"p\">(<\/span><span class=\"n\">auto_now<\/span><span class=\"o\">=<\/span><span class=\"bp\">True<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u660e\u3089\u304b\u306a\u9519\u8bef\u6d88\u5931\u540e\uff0c\u6211\u5f00\u59cb\u8fdb\u884c\u64cd\u4f5c\u786e\u8ba4\uff0c\u4f3c\u4e4e\u5927\u81f4\u6b63\u5e38\u8fd0\u884c\u3002\u53ea\u5269\u4e0b\u5728save()\u4e4b\u524d\u5f15\u7528updated_at\u4f1a\u5bfc\u81f4\u9519\u8bef\u7684\u90e8\u5206\u9700\u8981\u8c03\u6574\uff0c\u8fd9\u6837\u5e94\u8be5\u5c31\u80fd\u5b8c\u6210\u66f4\u65b0\u4e86\uff0c\u4e0d\u8fc7\u8fd8\u5b58\u5728\u4e00\u4e9b\u9677\u9631\u2026\u2026<\/p>\n<h2>\u672a\u89e3\u51b3\u7684\u95ee\u9898<\/h2>\n<p>\u5176\u5b9e\u6211\u672c\u6765\u5e0c\u671b\u5728\u53d1\u5e03\u8fd9\u4e2a\u5723\u8bde\u65e5\u5386\u4e4b\u524d\u80fd\u5b8c\u5168\u66f4\u65b0\uff0c\u4f46\u662f\u4ecd\u7136\u5b58\u5728\u4e00\u4e9b\u672a\u89e3\u51b3\u548c\u539f\u56e0\u4e0d\u660e\u7684\u95ee\u9898\u3002<\/p>\n<h3>\u6dfb\u52a0\u8fc1\u79fb<\/h3>\n<p>\u6267\u884c\u5355\u5143\u6d4b\u8bd5\u65f6\uff0c<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> python manage.py <span class=\"nb\">test <\/span>myapp\r\n<span class=\"gp\">#<\/span> \u7565\r\n<span class=\"go\">django.db.utils.IntegrityError: (1215, 'Cannot add foreign key constraint')\r\n<\/span><\/code><\/pre>\n<p>\u6211\u4e0d\u5c0f\u5fc3\u51fa\u73b0\u4e86\u8fd9\u4e2a\u9519\u8bef\u3002<\/p>\n<p>\u5c3d\u7ba1\u539f\u56e0\u8c03\u67e5\u82b1\u4e86\u5f88\u591a\u65f6\u95f4\uff0c\u4f46\u770b\u8d77\u6765\u95ee\u9898\u4f3c\u4e4e\u662f\u7531\u4e8e\u5404\u4e2aDjango App\u76ee\u5f55\u4e0b\u4e0d\u5b58\u5728\u8fc1\u79fb\u6587\u4ef6\uff08migrations\uff09\uff0c\u5bfc\u81f4\u5355\u5143\u6d4b\u8bd5\u6570\u636e\u5e93\u521b\u5efa\u65f6\u65e0\u6cd5\u6b63\u786e\u53cd\u6620\u6a21\u5f0f\u6240\u81f4\u3002<\/p>\n<p>\u7968\u52a1\u8425\u9500\u81eaDjango 1.7\u5f15\u5165\u8fc1\u79fb\u4e4b\u524d\u5c31\u5f00\u59cb\u5f00\u53d1\u4e86\u3002\u5f53\u5347\u7ea7\u5230Django 1.7\u65f6\uff0c\u6211\u4eec\u6ca1\u6709\u6267\u884c&#8221;manage.py makemigrations&#8221;\u547d\u4ee4\uff0c\u56e0\u4e3a\u6211\u4eec\u8ba4\u4e3a\u8fc1\u79fb\u662f\u4e0d\u5fc5\u8981\u7684\uff0c\u6211\u4eec\u6ca1\u6709\u8ba1\u5212\u4f7f\u7528\u3002\u7136\u800c\uff0c\u73b0\u5728\u4f3c\u4e4e\u786e\u5b9e\u9700\u8981\u4f7f\u7528\u8fc1\u79fb\u4e86\u3002<\/p>\n<h3>\u4fee\u6539fixtures\u7684YAML\u6587\u4ef6\u3002<\/h3>\n<p>\u5728Django\u7684\u6807\u51c6\u6d4b\u8bd5\u8fd0\u884c\u5668\u4e2d\u8fd4\u56de\u5e76\u624b\u52a8\u521b\u5efa\u6d4b\u8bd5\u6570\u636e\u5e93\u4e0a\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"gp\">$<\/span> python manage.py <span class=\"nb\">test <\/span>myapp <span class=\"nt\">--keepdb<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u4f7f\u7528 `keepdb` \u9009\u9879\u8fd0\u884c\u6d4b\u8bd5\u65f6\uff0c\u6d4b\u8bd5\u987a\u5229\u6267\u884c\u3002<\/p>\n<p>\u7136\u800c\uff0c\u6b63\u5982\u5148\u524d\u9884\u6d4b\u7684\u90a3\u6837\uff0c\u7531\u4e8eupdated_at\u6a21\u578b\u5b9a\u4e49\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u56e0\u6b64\u5c1d\u8bd5\u5411updated_at\u63d2\u5165NULL\u5bfc\u81f4\u5939\u5177\u65e0\u6cd5\u52a0\u8f7d\u7684\u60c5\u51b5\u53d1\u751f\u3002<\/p>\n<p>\u6211\u53ea\u9700\u8981\u4e00\u4e2a\u4e2d\u6587\u9009\u9879\u6765\u6539\u5199\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u3059\u3079\u3066\u306efixtures\u306eYAML\u3092\u4fee\u6b63\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c6\u30b9\u30c8\u6642\u3060\u3051pre_save\u30b7\u30b0\u30ca\u30eb\u3067updated_at\u304c\u975eNULL\u306b\u306a\u308b\u3088\u3046\u306b\u3059\u308b\u3002<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">YAML\u3067fixtures\u3092\u4f5c\u308b\u306e\u3092\u3084\u3081\u3066\u3001Factory Boy\u306e\u3088\u3046\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u306b\u79fb\u884c\u3059\u308b\u3002<\/ul>\n<p>\u6211\u6b63\u5728\u8003\u8651\u5404\u79cd\u4fee\u6539\u65b9\u5f0f\u3002<\/p>\n<h3>Django 1.9\u4e2d\u62a5\u5e9f\u51fd\u6570\u7684\u8b66\u544a<\/h3>\n<p>\u7531\u4e8e\u5c06 Django \u7248\u672c\u4ece 1.8 \u5347\u7ea7\u5230 1.9\uff0c\u9884\u8ba1\u67d0\u4e9b\u51fd\u6570\u5c06\u88ab\u5e9f\u5f03\u5e76\u4e14\u4f1a\u6709\u5927\u91cf\u8b66\u544a\u663e\u793a\uff0c\u56e0\u6b64\u6211\u6b63\u5728\u9010\u4e2a\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898\u3002<\/p>\n<p>Django \u7684\u8b66\u544a &#8211; django.core.cache.get_cache\u3002<\/p>\n<pre class=\"post-pre\"><code>RemovedInDjango19Warning: 'get_cache' is deprecated in favor of 'caches'\r\n<\/code><\/pre>\n<p>\u4fee\u8ba2\u4e4b\u524d\u3002<\/p>\n<pre class=\"post-pre\"><code>from django.core.cache improt get_cache\r\n\r\nget_cache('default').get('key')\r\n<\/code><\/pre>\n<p>\u7ecf\u8fc7\u4fee\u6b63\u540e\uff0c\u6b64\u5904\u5df2\u8fdb\u884c\u4e86\u673a\u68b0\u66ff\u6362\u3002<\/p>\n<pre class=\"post-pre\"><code>from django.core.cache improt caches\r\n\r\ncaches['default'].get('key')\r\n<\/code><\/pre>\n<p>django.utils.functional.memoize\u7684\u8b66\u544a\u3002<\/p>\n<pre class=\"post-pre\"><code>RemovedInDjango19Warning: memoize wrapper is deprecated and will be removed in Django 1.9. Use django.utils.lru_cache instead.\r\n<\/code><\/pre>\n<p>django.utils.datastructures.SortedDict\u53d1\u51fa\u8b66\u544a\u3002\u8fd9\u5e76\u4e0d\u662f\u6211\u4eec\u81ea\u5df1\u7f16\u5199\u7684\u4ee3\u7801\u95ee\u9898\uff0c\u800c\u662f\u7531\u4e8e\u6211\u4eec\u6240\u4f7f\u7528\u7684django-redis\u7248\u672c\u8fc7\u4e8e\u9648\u65e7\uff0c\u56e0\u6b64\u9700\u8981\u8fdb\u884c\u5347\u7ea7\u3002<\/p>\n<pre class=\"post-pre\"><code>RemovedInDjango19Warning: SortedDict is deprecated and will be $\r\nemoved in Django 1.9.\r\n<\/code><\/pre>\n<p>\u5728\u5c06Django\u6a21\u578b\u8fdb\u884cpickle\u65f6\u51fa\u73b0\u7684\u8b66\u544a\u3002<\/p>\n<pre class=\"post-pre\"><code>RuntimeWarning: Pickled model instance's Django version is not specified.\r\n<\/code><\/pre>\n<h2>\u6700\u540e<\/h2>\n<p>\u867d\u7136\u66f4\u65b0\u5c1a\u672a\u5b8c\u6210\uff0c\u4f46\u6839\u636eDjango\u7684\u53d1\u5e03\u653f\u7b56\uff0c\u6211\u4eec\u76ee\u524d\u4f7f\u7528\u76841.7\u7248\u672c\u4e00\u65e62.0\u53d1\u5e03\uff0c\u5c06\u505c\u6b62\u7ef4\u62a4\uff0c\u56e0\u6b64\u5fc5\u987b\u8fc1\u79fb\u5230\u4e0b\u4e00\u4e2a\u957f\u671f\u652f\u6301\u7248\u76841.8\u7248\u672c\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u6211\u4eec\u4e5f\u5728\u8c03\u67e5\u4ecePython 2.7\u5230Python 3.5\u7684\u8fc1\u79fb\u662f\u5426\u53ef\u884c\uff0c\u5e76\u4e14\u610f\u8bc6\u5230\u4e3a\u4e86\u8fdb\u884cPython 3.5\u7684\u8fc1\u79fb\uff0c\u6211\u4eec\u9700\u8981\u8ddf\u968f\u6700\u65b0\u7248\u672c\u7684Django\u3002<\/p>\n<ul class=\"post-ul\">Python 2.7\u3067\u7a3c\u50cd\u4e2d\u306eDjango\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092Python 3.5\u3078\u79fb\u884c\u3059\u308b<\/ul>\n<p>\u6211\u5e0c\u671b\u5728\u5e74\u672b\u80fd\u591f\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u5fc3\u60c5\u6109\u5feb\u5730\u8fce\u63a5\u65b0\u5e74\u3002<\/p>\n<p>\u4e0b\u4e00\u4e2a\u8ba1\u5212\u662fakkuma\u5148\u751f\u5c06\u5199\u5173\u4e8eAndroid\u7684ActionMode\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u662f\u4ec0\u4e48\uff1f \u8fd9\u662fmixi\u56e2\u4f53\u5723\u8bde\u65e5\u5386\u7684\u7b2c\u4e8c\u5929\u3002 \u7531MIXI Group\u8fd0\u8425\u7684\u300cTicket Camp\u300d\u4f7f\u7528Py [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-49741","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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