{"id":109,"date":"2020-11-27T12:53:10","date_gmt":"2020-11-27T06:53:10","guid":{"rendered":"http:\/\/www.dreamflier.net\/wordpress\/?p=109"},"modified":"2021-01-14T19:52:20","modified_gmt":"2021-01-14T13:52:20","slug":"django%e4%b8%ad%e7%9a%84datetimefield%e6%a0%bc%e5%bc%8f","status":"publish","type":"post","link":"http:\/\/www.jichangqing.net\/wordpress\/?p=109","title":{"rendered":"Django\u4e2d\u7684DateTimeField\u683c\u5f0f"},"content":{"rendered":"<p style=\"color: #4b4b4b;\">\u521b\u5efadjango\u7684model\u65f6\uff0c\u6709DateTimeField\u3001DateField\u548cTimeField\u4e09\u79cd\u7c7b\u578b\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u65e5\u671f\u5b57\u6bb5\uff0c\u5176\u503c\u5206\u522b\u5bf9\u5e94\u7740datetime()\u3001date()\u3001time()\u4e09\u4e2d\u5bf9\u8c61\u3002\u8fd9\u4e09\u4e2afield\u6709\u7740\u76f8\u540c\u7684\u53c2\u6570auto_now\u548cauto_now_add\uff0c\u8868\u9762\u4e0a\u770b\u8d77\u6765\u5f88easy\uff0c\u4f46\u5b9e\u9645\u4f7f\u7528\u4e2d\u5f88\u5bb9\u6613\u51fa\u9519\uff0c\u4e0b\u9762\u662f\u4e00\u4e9b\u6ce8\u610f\u70b9\u3002<\/p>\n<h2 style=\"font-weight: bold; color: #4b4b4b;\">DateTimeField.auto_now<\/h2>\n<p style=\"color: #4b4b4b;\">\u8fd9\u4e2a\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e3afalse\uff0c\u8bbe\u7f6e\u4e3atrue\u65f6\uff0c\u80fd\u591f\u5728\u4fdd\u5b58\u8be5\u5b57\u6bb5\u65f6\uff0c\u5c06\u5176\u503c\u8bbe\u7f6e\u4e3a\u5f53\u524d\u65f6\u95f4\uff0c\u5e76\u4e14\u6bcf\u6b21\u4fee\u6539model\uff0c\u90fd\u4f1a\u81ea\u52a8\u66f4\u65b0\u3002\u56e0\u6b64\u8fd9\u4e2a\u53c2\u6570\u5728\u9700\u8981\u5b58\u50a8\u201c\u6700\u540e\u4fee\u6539\u65f6\u95f4\u201d\u7684\u573a\u666f\u4e0b\uff0c\u5341\u5206\u65b9\u4fbf\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u8bbe\u7f6e\u8be5\u53c2\u6570\u4e3atrue\u65f6\uff0c\u5e76\u4e0d\u7b80\u5355\u5730\u610f\u5473\u7740\u5b57\u6bb5\u7684\u9ed8\u8ba4\u503c\u4e3a\u5f53\u524d\u65f6\u95f4\uff0c\u800c\u662f\u6307\u5b57\u6bb5\u4f1a\u88ab\u201c\u5f3a\u5236\u201d\u66f4\u65b0\u5230\u5f53\u524d\u65f6\u95f4\uff0c\u4f60\u65e0\u6cd5\u7a0b\u5e8f\u4e2d\u624b\u52a8\u4e3a\u5b57\u6bb5\u8d4b\u503c\uff1b\u5982\u679c\u4f7f\u7528django\u518d\u5e26\u7684admin\u7ba1\u7406\u5668\uff0c\u90a3\u4e48\u8be5\u5b57\u6bb5\u5728admin\u4e2d\u662f\u53ea\u8bfb\u7684\u3002<\/p>\n<h2 style=\"font-weight: bold; color: #4b4b4b;\">DateTimeField.auto_now_add<\/h2>\n<p style=\"color: #4b4b4b;\">\u8fd9\u4e2a\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e5f\u4e3aFalse\uff0c\u8bbe\u7f6e\u4e3aTrue\u65f6\uff0c\u4f1a\u5728model\u5bf9\u8c61\u7b2c\u4e00\u6b21\u88ab\u521b\u5efa\u65f6\uff0c\u5c06\u5b57\u6bb5\u7684\u503c\u8bbe\u7f6e\u4e3a\u521b\u5efa\u65f6\u7684\u65f6\u95f4\uff0c\u4ee5\u540e\u4fee\u6539\u5bf9\u8c61\u65f6\uff0c\u5b57\u6bb5\u7684\u503c\u4e0d\u4f1a\u518d\u66f4\u65b0\u3002\u8be5\u5c5e\u6027\u901a\u5e38\u88ab\u7528\u5728\u5b58\u50a8\u201c\u521b\u5efa\u65f6\u95f4\u201d\u7684\u573a\u666f\u4e0b\u3002\u4e0eauto_now\u7c7b\u4f3c\uff0cauto_now_add\u4e5f\u5177\u6709\u5f3a\u5236\u6027\uff0c\u4e00\u65e6\u88ab\u8bbe\u7f6e\u4e3aTrue\uff0c\u5c31\u65e0\u6cd5\u5728\u7a0b\u5e8f\u4e2d\u624b\u52a8\u4e3a\u5b57\u6bb5\u8d4b\u503c\uff0c\u5728admin\u4e2d\u5b57\u6bb5\u4e5f\u4f1a\u6210\u4e3a\u53ea\u8bfb\u7684\u3002<\/p>\n<p class=\"tc\" style=\"color: #4b4b4b;\"><img decoding=\"async\" src=\"http:\/\/www.nanerbang.com\/media\/article_images\/2015\/06\/27\/qq20150627112737.png\" alt=\"django\u4e2d\u7684\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\" \/><\/p>\n<h2 style=\"font-weight: bold; color: #4b4b4b;\">admin\u4e2d\u7684\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5<\/h2>\n<p style=\"color: #4b4b4b;\">auto_now\u548cauto_now_add\u88ab\u8bbe\u7f6e\u4e3aTrue\u540e\uff0c\u8fd9\u6837\u505a\u4f1a\u5bfc\u81f4\u5b57\u6bb5\u6210\u4e3aeditable=False\u548cblank=True\u7684\u72b6\u6001\u3002editable=False\u5c06\u5bfc\u81f4\u5b57\u6bb5\u4e0d\u4f1a\u88ab\u5448\u73b0\u5728admin\u4e2d\uff0cblank=Ture\u8868\u793a\u5141\u8bb8\u5728\u8868\u5355\u4e2d\u4e0d\u8f93\u5165\u503c\u3002\u6b64\u65f6\uff0c\u5982\u679c\u5728admin\u7684fields\u6216fieldset\u4e2d\u5f3a\u884c\u52a0\u5165\u8be5\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\uff0c\u90a3\u4e48\u7a0b\u5e8f\u4f1a\u62a5\u9519\uff0cadmin\u65e0\u6cd5\u6253\u5f00\uff1b\u5982\u679c\u5728admin\u4e2d\u4fee\u6539\u5bf9\u8c61\u65f6\uff0c\u60f3\u8981\u770b\u5230\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u53ef\u4ee5\u5c06\u65e5\u671f\u65f6\u95f4\u5b57\u6bb5\u6dfb\u52a0\u5230admin\u7c7b\u7684readonly_fields\u4e2d\uff1a<\/p>\n<pre class=\"  language-python\" style=\"color: #4b4b4b;\" data-pbcklang=\"python\" data-pbcktabsize=\"4\"><code class=\"line-numbers  language-python hljs\"><span class=\"token keyword\"><span class=\"hljs-class\"><span class=\"hljs-keyword\" style=\"color: #0000ff;\">class<\/span> <span class=\"hljs-title\" style=\"color: #a31515;\">YourAdmin<\/span><\/span><span class=\"token punctuation\"><span class=\"hljs-class\">(<span class=\"hljs-params\">admin<\/span><\/span><span class=\"token punctuation\"><span class=\"hljs-class\"><span class=\"hljs-params\">.ModelAdmin<\/span><\/span><span class=\"token punctuation\"><span class=\"hljs-class\">)<\/span><span class=\"token punctuation\"><span class=\"hljs-class\">:<\/span>\r\n    readonly_fields <span class=\"token operator\">= <span class=\"token punctuation\">(<span class=\"token string\"><span class=\"hljs-string\" style=\"color: #a31515;\">'save_date'<\/span><span class=\"token punctuation\">, <span class=\"token string\"><span class=\"hljs-string\" style=\"color: #a31515;\">'mod_date'<\/span><span class=\"token punctuation\">,<span class=\"token punctuation\">)\r\nadmin<span class=\"token punctuation\">.site<span class=\"token punctuation\">.register<span class=\"token punctuation\">(Tag<span class=\"token punctuation\">, YourAdmin<span class=\"token punctuation\">)<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/code><\/pre>\n<h2 style=\"font-weight: bold; color: #4b4b4b;\">\u5982\u4f55\u5c06\u521b\u5efa\u65f6\u95f4\u8bbe\u7f6e\u4e3a\u201c\u9ed8\u8ba4\u5f53\u524d\u201d\u5e76\u4e14\u53ef\u4fee\u6539<\/h2>\n<p style=\"color: #4b4b4b;\">\u90a3\u4e48\u95ee\u9898\u6765\u4e86\u3002\u5b9e\u9645\u573a\u666f\u4e2d\uff0c\u5f80\u5f80\u65e2\u5e0c\u671b\u5728\u5bf9\u8c61\u7684\u521b\u5efa\u65f6\u95f4\u9ed8\u8ba4\u88ab\u8bbe\u7f6e\u4e3a\u5f53\u524d\u503c\uff0c\u53c8\u5e0c\u671b\u80fd\u5728\u65e5\u540e\u4fee\u6539\u5b83\u3002\u600e\u4e48\u5b9e\u73b0\u8fd9\u79cd\u9700\u6c42\u5462\uff1f<\/p>\n<p style=\"color: #4b4b4b;\">django\u4e2d\u6240\u6709\u7684model\u5b57\u6bb5\u90fd\u62e5\u6709\u4e00\u4e2adefault\u53c2\u6570\uff0c\u7528\u6765\u7ed9\u5b57\u6bb5\u8bbe\u7f6e\u9ed8\u8ba4\u503c\u3002\u53ef\u4ee5\u7528default=timezone.now\u6765\u66ff\u6362auto_now=True\u6216auto_now_add=True\u3002timezone.now\u5bf9\u5e94\u7740django.utils.timezone.now()\uff0c\u56e0\u6b64\u9700\u8981\u5199\u6210\u7c7b\u4f3c\u4e0b\u9762\u7684\u5f62\u5f0f\uff1a<\/p>\n<pre class=\"  language-python\" style=\"color: #4b4b4b;\" data-pbcklang=\"python\" data-pbcktabsize=\"4\"><code class=\"line-numbers  language-python hljs\"><span class=\"token keyword\"><span class=\"hljs-keyword\" style=\"color: #0000ff;\">from<\/span> django<span class=\"token number\">.db <span class=\"token keyword\"><span class=\"hljs-keyword\" style=\"color: #0000ff;\">import<\/span> models\r\n<span class=\"token keyword\"><span class=\"hljs-keyword\" style=\"color: #0000ff;\">import<\/span> django<span class=\"token punctuation\">.utils<span class=\"token punctuation\">.timezone <span class=\"token keyword\"><span class=\"hljs-keyword\" style=\"color: #0000ff;\">as<\/span> timezone\r\n<span class=\"token keyword\"><span class=\"hljs-class\"><span class=\"hljs-keyword\" style=\"color: #0000ff;\">class<\/span> <span class=\"hljs-title\" style=\"color: #a31515;\">Doc<\/span><\/span><span class=\"token punctuation\"><span class=\"hljs-class\">(<span class=\"hljs-params\">models<\/span><\/span><span class=\"token punctuation\"><span class=\"hljs-class\"><span class=\"hljs-params\">.Model<\/span><\/span><span class=\"token punctuation\"><span class=\"hljs-class\">)<\/span><span class=\"token punctuation\"><span class=\"hljs-class\">:<\/span>\r\n    add_date <span class=\"token operator\">= models<span class=\"token punctuation\">.DateTimeField<span class=\"token punctuation\">(<span class=\"token string\"><span class=\"hljs-string\" style=\"color: #a31515;\">'\u4fdd\u5b58\u65e5\u671f'<\/span><span class=\"token punctuation\">,default <span class=\"token operator\">= timezone<span class=\"token punctuation\">.now<span class=\"token punctuation\">)\r\n    mod_date <span class=\"token operator\">= models<span class=\"token punctuation\">.DateTimeField<span class=\"token punctuation\">(<span class=\"token string\"><span class=\"hljs-string\" style=\"color: #a31515;\">'\u6700\u540e\u4fee\u6539\u65e5\u671f'<\/span><span class=\"token punctuation\">, auto_now <span class=\"token operator\">= <span class=\"token boolean\"><span class=\"hljs-literal\" style=\"color: #a31515;\">True<\/span>\r\n\r\n\r\n<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/code><\/pre>\n<p style=\"color: #4b4b4b;\">html\u9875\u9762\u4ece\u6570\u636e\u5e93\u4e2d\u8bfb\u51faDateTimeField\u5b57\u6bb5\u65f6\uff0c\u663e\u793a\u7684\u65f6\u95f4\u683c\u5f0f\u548c\u6570\u636e\u5e93\u4e2d\u5b58\u653e\u7684\u683c\u5f0f\u4e0d\u4e00\u81f4\uff0c\u6bd4\u5982\u6570\u636e\u5e93\u5b57\u6bb5\u5185\u5bb9\u4e3a2016-06-03 13:00:00\uff0c\u4f46\u662f\u9875\u9762\u663e\u793a\u7684\u5374\u662fApr. 03, 2016, 1 p.m.<\/p>\n<p style=\"color: #4b4b4b;\">\u4e3a\u4e86\u9875\u9762\u548c\u6570\u636e\u5e93\u4e2d\u663e\u793a\u4e00\u81f4\uff0c\u9700\u8981\u5728\u9875\u9762\u683c\u5f0f\u5316\u65f6\u95f4\uff0c\u9700\u8981\u6dfb\u52a0&lt;td&gt;{{\u00a0<strong>infor.updatetime|date:&#8221;Y-m-d H:i:s&#8221;\u00a0<\/strong>}}&lt;\/td&gt; \u7c7b\u4f3c\u7684\u8fc7\u6ee4\u5668\u3002\u5237\u65b0\u9875\u9762\uff0c\u5373\u53ef\u6b63\u5e38\u663e\u793a\u3002<\/p>\n<p style=\"color: #4b4b4b;\">\u00a0https:\/\/www.cnblogs.com\/dreamer-fish\/p\/5556641.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u521b\u5efadjango\u7684model\u65f6\uff0c\u6709DateTimeField\u3001DateField\u548cTimeField\u4e09\u79cd\u7c7b\u578b\u53ef\u4ee5\u7528\u6765\u521b\u5efa\u65e5\u671f\u5b57\u6bb5\uff0c\u5176\u503c\u5206\u522b\u5bf9\u5e94\u7740datetime()\u3001date()\u3001time()\u4e09\u4e2d\u5bf9\u8c61\u3002\u8fd9\u4e09\u4e2afield\u6709\u7740\u76f8\u540c\u7684\u53c2\u6570auto &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-109","post","type-post","status-publish","format-standard","hentry","category-django"],"_links":{"self":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/109","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=109"}],"version-history":[{"count":2,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions"}],"predecessor-version":[{"id":111,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/109\/revisions\/111"}],"wp:attachment":[{"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=109"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=109"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.jichangqing.net\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=109"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}