{"id":6121,"date":"2022-04-05T18:05:45","date_gmt":"2022-04-05T10:05:45","guid":{"rendered":"https:\/\/egonlin.com\/?p=6121"},"modified":"2022-04-26T13:51:22","modified_gmt":"2022-04-26T05:51:22","slug":"%e7%ac%ac%e5%8d%81%e4%b9%9d%e8%8a%82%ef%bc%9a%e4%bf%a1%e5%8f%b7","status":"publish","type":"post","link":"https:\/\/egonlin.com\/?p=6121","title":{"rendered":"\u7b2c\u5341\u4e5d\u8282\uff1a\u4fe1\u53f7"},"content":{"rendered":"

\u4fe1\u53f7<\/h1>\n

\"\"<\/div><\/p>\n

\u4e00\u3001\u4fe1\u53f7\u7b80\u4ecb<\/h2>\n
\n

Django\u63d0\u4f9b\u4e00\u79cd\u4fe1\u53f7\u673a\u5236\u3002\u5176\u5b9e\u5c31\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\uff0c\u53c8\u53eb\u53d1\u5e03-\u8ba2\u9605(Publish\/Subscribe) \u3002\u5f53\u53d1\u751f\u4e00\u4e9b\u52a8\u4f5c\u7684\u65f6\u5019\uff0c\u53d1\u51fa\u4fe1\u53f7\uff0c\u7136\u540e\u76d1\u542c\u4e86\u8fd9\u4e2a\u4fe1\u53f7\u7684\u51fd\u6570\u5c31\u4f1a\u6267\u884c\u3002<\/p>\n

\u901a\u4fd7\u6765\u8bb2\uff0c\u5c31\u662f\u4e00\u4e9b\u52a8\u4f5c\u53d1\u751f\u7684\u65f6\u5019\uff0c\u4fe1\u53f7\u5141\u8bb8\u7279\u5b9a\u7684\u53d1\u9001\u8005\u53bb\u63d0\u9192\u4e00\u4e9b\u63a5\u53d7\u8005\u3002\u7528\u4e8e\u5728\u6846\u67b6\u6267\u884c\u64cd\u4f5c\u65f6\u89e3\u8026\u3002<\/p>\n<\/blockquote>\n

\u4e8c\u3001Django\u5185\u7f6e\u4fe1\u53f7<\/h2>\n
Model signals\n    pre_init                    # django\u7684modal\u6267\u884c\u5176\u6784\u9020\u65b9\u6cd5\u524d\uff0c\u81ea\u52a8\u89e6\u53d1\n    post_init                   # django\u7684modal\u6267\u884c\u5176\u6784\u9020\u65b9\u6cd5\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\n    pre_save                    # django\u7684modal\u5bf9\u8c61\u4fdd\u5b58\u524d\uff0c\u81ea\u52a8\u89e6\u53d1\n    post_save                   # django\u7684modal\u5bf9\u8c61\u4fdd\u5b58\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\n    pre_delete                  # django\u7684modal\u5bf9\u8c61\u5220\u9664\u524d\uff0c\u81ea\u52a8\u89e6\u53d1\n    post_delete                 # django\u7684modal\u5bf9\u8c61\u5220\u9664\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\n    m2m_changed                 # django\u7684modal\u4e2d\u4f7f\u7528m2m\u5b57\u6bb5\u64cd\u4f5c\u7b2c\u4e09\u5f20\u8868\uff08add,remove,clear\uff09\u524d\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\n    class_prepared              # \u7a0b\u5e8f\u542f\u52a8\u65f6\uff0c\u68c0\u6d4b\u5df2\u6ce8\u518c\u7684app\u4e2dmodal\u7c7b\uff0c\u5bf9\u4e8e\u6bcf\u4e00\u4e2a\u7c7b\uff0c\u81ea\u52a8\u89e6\u53d1\nManagement signals\n    pre_migrate                 # \u6267\u884cmigrate\u547d\u4ee4\u524d\uff0c\u81ea\u52a8\u89e6\u53d1\n    post_migrate                # \u6267\u884cmigrate\u547d\u4ee4\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\nRequest\/response signals\n    request_started             # \u8bf7\u6c42\u5230\u6765\u524d\uff0c\u81ea\u52a8\u89e6\u53d1\n    request_finished            # \u8bf7\u6c42\u7ed3\u675f\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\n    got_request_exception       # \u8bf7\u6c42\u5f02\u5e38\u540e\uff0c\u81ea\u52a8\u89e6\u53d1\nTest signals\n    setting_changed             # \u4f7f\u7528test\u6d4b\u8bd5\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1\n    template_rendered           # \u4f7f\u7528test\u6d4b\u8bd5\u6e32\u67d3\u6a21\u677f\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1\nDatabase Wrappers\n    connection_created          # \u521b\u5efa\u6570\u636e\u5e93\u8fde\u63a5\u65f6\uff0c\u81ea\u52a8\u89e6\u53d1\nDjango \u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u7684\u5185\u5efa\u4fe1\u53f7\uff0c\u5141\u8bb8\u7528\u6237\u7684\u4ee3\u7801\u83b7\u5f97DJango\u7684\u7279\u5b9a\u64cd\u4f5c\u7684\u901a\u77e5\u3002\u8fd9\u5305\u542b\u4e00\u4e9b\u6709\u7528\u7684\u901a\u77e5\uff1a\ndjango.db.models.signals.pre_save & django.db.models.signals.post_save\n\n\u5728\u6a21\u578b save()\u65b9\u6cd5\u8c03\u7528\u4e4b\u524d\u6216\u4e4b\u540e\u53d1\u9001\u3002\ndjango.db.models.signals.pre_delete & django.db.models.signals.post_delete\n\n\u5728\u6a21\u578bdelete()\u65b9\u6cd5\u6216\u67e5\u8be2\u96c6\u7684delete() \u65b9\u6cd5\u8c03\u7528\u4e4b\u524d\u6216\u4e4b\u540e\u53d1\u9001\u3002\ndjango.db.models.signals.m2m_changed\n\n\u6a21\u578b\u4e0a\u7684 ManyToManyField \u4fee\u6539\u65f6\u53d1\u9001\u3002\ndjango.core.signals.request_started & django.core.signals.request_finished\n\nDjango\u5efa\u7acb\u6216\u5173\u95edHTTP \u8bf7\u6c42\u65f6\u53d1\u9001\u3002<\/code><\/pre>\n
\u4e09\u3001\u5185\u7f6e\u4fe1\u53f7\u7684\u4f7f\u7528<\/h2>\n
<\/p>
<\/div>
\u67e5\u770b\u66f4\u591a<\/h2>
\u8054\u7cfb\u7ba1\u7406\u5458\u5fae\u4fe1tutu19192010\uff0c\u6ce8\u518c\u8d26\u53f7<\/p>\n<\/div>
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Register<\/a><\/div>
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<\/div>","protected":false},"excerpt":{"rendered":"
\u4fe1\u53f7 \u4e00\u3001\u4fe1\u53f7\u7b80\u4ecb Django\u63d0\u4f9b\u4e00\u79cd\u4fe1\u53f7\u673a\u5236\u3002\u5176\u5b9e\u5c31\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\uff0c\u53c8\u53eb\u53d1\u5e03-\u8ba2\u9605(Publish\/Subs […]<\/p>\n","protected":false},"author":3,"featured_media":6788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,405],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/6121"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6121"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/6121\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/media\/6788"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}