{"id":54947,"date":"2025-08-13T13:59:57","date_gmt":"2025-08-13T05:59:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/54947.html"},"modified":"2025-08-13T13:59:57","modified_gmt":"2025-08-13T05:59:57","slug":"pythonflask%e5%90%8e%e7%ab%af%e5%bc%80%e5%8f%91%e8%bf%9b%e9%98%b6%e7%b3%bb%e5%88%97-flask-migrate%e6%8f%92%e4%bb%b6%ef%bc%9a%e5%ae%9e%e7%8e%b0orm%e6%a8%a1%e5%9e%8b%e7%9a%84%e8%bf%81%e7%a7%bb","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/54947.html","title":{"rendered":"python+flask\u540e\u7aef\u5f00\u53d1~\u8fdb\u9636\u7cfb\u5217 | Flask-migrate\u63d2\u4ef6\uff1a\u5b9e\u73b0ORM\u6a21\u578b\u7684\u8fc1\u79fb"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055943-689c29cfdd6f9.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u7b80\u4ecb&#xff1a;\u6570\u636e\u5e93\u6a21\u5f0f\u7684\u53d8\u66f4\u662f\u540e\u7aef\u5f00\u53d1\u4e2d\u4e0d\u53ef\u907f\u514d\u7684\u4e00\u90e8\u5206\u3002\u4f20\u7edf\u7684 db.create_all() \u65b9\u6cd5\u5728\u5904\u7406\u6570\u636e\u5e93\u8fc1\u79fb\u65f6\u65e0\u6cd5\u5b9e\u65f6\u5904\u7406\u6570\u636e\u5e93\u6a21\u5f0f\u7684\u53d8\u66f4\u3002Flask\u5e94\u7528\u6bcf\u6b21\u8fd0\u884c\u53ef\u4ee5\u68c0\u6d4b\u65b0\u7684\u6570\u636e\u5e93\u5bf9\u8c61&#xff0c;\u5373\u8868\u7684\u6dfb\u52a0&#xff0c;\u4f46\u5bf9\u4e8e\u67d0\u5f20\u8868\u7684\u5b57\u6bb5\u53d8\u66f4\u7b49\u573a\u666f\u65e0\u6cd5\u68c0\u6d4b\u3002\u8fd9\u65f6&#xff0c;Flask-Migrate \u63d2\u4ef6\u5c31\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002\u5b83\u4e0d\u4ec5\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u8f7b\u677e\u7ba1\u7406\u6570\u636e\u5e93\u7684\u7248\u672c&#xff0c;\u8fd8\u80fd\u81ea\u52a8\u5316\u5904\u7406\u6570\u636e\u5e93\u6a21\u5f0f\u7684\u53d8\u66f4&#xff0c;\u6781\u5927\u5730\u63d0\u9ad8\u4e86\u5f00\u53d1\u6548\u7387\u548c\u9879\u76ee\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<p>\u76ee\u5f55&#xff1a;<\/p>\n<p>\u4e00\u3001db.create_all() \u7684\u5c40\u9650\u6027 \u4e8c\u3001Flask-migrate\u63d2\u4ef6\u7684\u66f4\u591a\u7ec6\u8282 2.1 \u57fa\u672c\u4ecb\u7ecd\u4e0e\u529f\u80fd 2.2 \u5b89\u88c5\u3001\u914d\u7f6e\u4e0e\u8fc1\u79fb\u5e94\u7528 \u4e09\u3001\u5b9e\u6218\u5e94\u7528\u5b9e\u4f8b \u56db\u3001\u7ed3\u675f\u8bed<\/p>\n<hr \/>\n<p>&#x1f680; \u8bfb\u5b8c\u672c\u6587&#xff0c;\u4f60\u5c06\u89e3\u9501\u4ee5\u4e0b\u8d85\u5b9e\u7528\u6280\u80fd\u548c\u77e5\u8bc6\u50a8\u5907&#xff1a;<\/p>\n<ul>\n<li>\u6df1\u5165\u7406\u89e3\u6570\u636e\u5e93\u8fc1\u79fb\u7684\u6982\u5ff5\u53ca\u5176\u91cd\u8981\u6027&#xff1a;\u638c\u63e1\u6570\u636e\u5e93\u8fc1\u79fb\u7684\u57fa\u672c\u539f\u7406&#xff0c;\u7406\u89e3\u5728\u9879\u76ee\u5f00\u53d1\u4e2d\u5982\u4f55\u901a\u8fc7\u8fc1\u79fb\u7ba1\u7406\u6570\u636e\u5e93\u7ed3\u6784\u7684\u53d8\u66f4&#xff0c;\u4ee5\u53ca\u8fd9\u4e9b\u53d8\u66f4\u5bf9\u9879\u76ee\u7ef4\u62a4\u548c\u6269\u5c55\u7684\u5f71\u54cd\u3002<\/li>\n<li>\u638c\u63e1 Flask-Migrate \u63d2\u4ef6\u7684\u96c6\u6210\u4e0e\u4f7f\u7528&#xff1a;\u5b66\u4f1a\u5982\u4f55\u5728 Flask \u9879\u76ee\u4e2d\u5b89\u88c5\u3001\u914d\u7f6e\u548c\u96c6\u6210 Flask-Migrate \u63d2\u4ef6&#xff0c;\u5305\u62ec\u521d\u59cb\u5316\u8fc1\u79fb\u73af\u5883\u3001\u751f\u6210\u8fc1\u79fb\u811a\u672c\u548c\u5e94\u7528\u8fc1\u79fb\u3002<\/li>\n<li>\u521b\u5efa\u548c\u7ba1\u7406\u8fc1\u79fb\u811a\u672c&#xff1a;\u638c\u63e1\u5982\u4f55\u4f7f\u7528 Flask-Migrate \u63d2\u4ef6\u521b\u5efa\u8fc1\u79fb\u811a\u672c&#xff0c;\u4ee5\u53ca\u5982\u4f55\u5e94\u7528\u8fd9\u4e9b\u811a\u672c\u6765\u66f4\u65b0\u6570\u636e\u5e93\u7ed3\u6784\u3002\u540c\u65f6&#xff0c;\u5b66\u4f1a\u5982\u4f55\u56de\u6eda\u8fc1\u79fb&#xff0c;\u4ee5\u5e94\u5bf9\u9519\u8bef\u6216\u9700\u8981\u6062\u590d\u5230\u4e4b\u524d\u72b6\u6001\u7684\u60c5\u51b5\u3002<\/li>\n<li>\u5b9e\u73b0\u6570\u636e\u5e93\u7684\u7248\u672c\u63a7\u5236&#xff1a;\u80fd\u591f\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u4f7f\u7528 Flask-Migrate \u63d2\u4ef6&#xff0c;\u901a\u8fc7\u7248\u672c\u63a7\u5236\u673a\u5236\u7ba1\u7406\u6570\u636e\u5e93\u7ed3\u6784\u7684\u53d8\u66f4&#xff0c;\u786e\u4fdd\u9879\u76ee\u7684\u53ef\u7ef4\u62a4\u6027\u548c\u53ef\u6269\u5c55\u6027\u3002<\/li>\n<\/ul>\n<h2>\u4e00\u3001db.create_all() \u7684\u5c40\u9650\u6027<\/h2>\n<p>\u5728 Flask \u9879\u76ee\u4e2d&#xff0c;db.create_all() \u662f\u4e00\u4e2a\u5e38\u7528\u7684\u547d\u4ee4&#xff0c;\u7528\u4e8e\u521b\u5efa\u6570\u636e\u5e93\u8868\u3002\u5728\u5148\u524d\u7684\u6587\u6863\u4ee5\u53ca\u5e94\u7528\u4e2d&#xff0c;\u6211\u91c7\u7528\u8fd9\u4e2a\u65b9\u6cd5\u8fdb\u884c\u6570\u636e\u5e93\u5bf9\u8c61\u7684\u521b\u5efa&#xff0c;\u56e0\u4e3a\u6682\u65f6\u4e0d\u6d89\u53ca\u6570\u636e\u5e93\u7684\u53d8\u66f4&#xff0c;\u4ec5\u4ec5\u4e3a\u4e86\u4e86\u89e3ORM\u6a21\u578b\u4f7f\u7528\u3002\u7136\u800c&#xff0c;\u968f\u7740\u9879\u76ee\u7684\u590d\u6742\u5ea6\u589e\u52a0&#xff0c;db.create_all() \u7684\u5c40\u9650\u6027\u9010\u6e10\u663e\u73b0&#xff0c;\u4e3b\u8981\u5982\u4e0b&#xff1a;<\/p>\n<li>\u65e0\u6cd5\u5904\u7406\u6570\u636e\u5e93\u6a21\u5f0f\u7684\u53d8\u66f4&#xff1a;db.create_all() \u53ea\u80fd\u521b\u5efa\u65b0\u7684\u8868&#xff0c;\u800c\u65e0\u6cd5\u5904\u7406\u8868\u7ed3\u6784\u7684\u53d8\u66f4&#xff0c;\u5982\u6dfb\u52a0\u3001\u5220\u9664\u6216\u4fee\u6539\u5b57\u6bb5\u3002<\/li>\n<li>\u65e0\u6cd5\u7248\u672c\u63a7\u5236&#xff1a;db.create_all() \u6ca1\u6709\u7248\u672c\u63a7\u5236\u673a\u5236&#xff0c;\u4e00\u65e6\u6570\u636e\u5e93\u7ed3\u6784\u53d1\u751f\u53d8\u5316&#xff0c;\u5f88\u96be\u56de\u6eaf\u5230\u4e4b\u524d\u7684\u7248\u672c\u3002<\/li>\n<li>\u7f3a\u4e4f\u81ea\u52a8\u5316&#xff1a;\u6bcf\u6b21\u6570\u636e\u5e93\u7ed3\u6784\u53d8\u66f4\u90fd\u9700\u8981\u624b\u52a8\u6267\u884c db.create_all()&#xff0c;\u8fd9\u4e0d\u4ec5\u7e41\u7410&#xff0c;\u8fd8\u5bb9\u6613\u51fa\u9519\u3002<\/li>\n<p>\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e9b\u95ee\u9898&#xff0c;\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u66f4\u5f3a\u5927\u7684\u5de5\u5177\u6765\u7ba1\u7406\u6570\u636e\u5e93\u8fc1\u79fb\u3002\u8fd9\u5c31\u662f Flask-Migrate \u63d2\u4ef6\u3002<\/p>\n<h2>\u4e8c\u3001Flask-migrate\u63d2\u4ef6\u7684\u66f4\u591a\u7ec6\u8282<\/h2>\n<h3>2.1 \u57fa\u672c\u4ecb\u7ecd\u4e0e\u529f\u80fd<\/h3>\n<p>Flask-Migrate \u662f\u4e00\u4e2a\u57fa\u4e8e Alembic \u7684 Flask \u6269\u5c55&#xff0c;\u7528\u4e8e\u5904\u7406\u6570\u636e\u5e93\u8fc1\u79fb\u3002\u5b83\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u6838\u5fc3\u529f\u80fd&#xff1a;<\/p>\n<li>\u81ea\u52a8\u68c0\u6d4b\u6570\u636e\u5e93\u6a21\u5f0f\u53d8\u66f4&#xff1a;\u901a\u8fc7\u6bd4\u8f83\u6570\u636e\u5e93\u7684\u5b9e\u9645\u7ed3\u6784\u548c\u6a21\u578b\u5b9a\u4e49&#xff0c;\u81ea\u52a8\u751f\u6210\u8fc1\u79fb\u811a\u672c\u3002<\/li>\n<li>\u7248\u672c\u63a7\u5236&#xff1a;\u652f\u6301\u6570\u636e\u5e93\u7684\u7248\u672c\u63a7\u5236&#xff0c;\u53ef\u4ee5\u8f7b\u677e\u5730\u5728\u4e0d\u540c\u7248\u672c\u4e4b\u95f4\u5207\u6362\u3002<\/li>\n<li>\u81ea\u52a8\u5316\u8fc1\u79fb&#xff1a;\u63d0\u4f9b\u547d\u4ee4\u884c\u5de5\u5177&#xff0c;\u53ef\u4ee5\u81ea\u52a8\u5e94\u7528\u8fc1\u79fb\u811a\u672c&#xff0c;\u7b80\u5316\u6570\u636e\u5e93\u7ba1\u7406\u6d41\u7a0b\u3002<\/li>\n<h3>2.2 \u5b89\u88c5\u3001\u914d\u7f6e\u4e0e\u8fc1\u79fb\u5e94\u7528<\/h3>\n<ul>\n<li>\u5b89\u88c5 Flask-Migrate<\/li>\n<\/ul>\n<p>\u9996\u5148&#xff0c;\u9700\u8981\u5b89\u88c5 Flask-Migrate \u63d2\u4ef6\u3002\u5728\u7ec8\u7aef\u4e2d\u8fd0\u884c\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p>pip install Flask<span class=\"token operator\">&#8211;<\/span>Migrate<\/p>\n<ul>\n<li>\u914d\u7f6e Flask-Migrate<\/li>\n<\/ul>\n<p>\u5728 Flask \u5e94\u7528\u4e2d&#xff0c;\u9700\u8981\u521d\u59cb\u5316 Flask-Migrate \u63d2\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801&#xff1a;<\/p>\n<p><span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<br \/>\n<span class=\"token keyword\">from<\/span> flask_sqlalchemy <span class=\"token keyword\">import<\/span> SQLAlchemy<br \/>\n<span class=\"token keyword\">from<\/span> flask_migrate <span class=\"token keyword\">import<\/span> Migrate<\/p>\n<p>app <span class=\"token operator\">&#061;<\/span> Flask<span class=\"token punctuation\">(<\/span>__name__<span class=\"token punctuation\">)<\/span><br \/>\napp<span class=\"token punctuation\">.<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;SQLALCHEMY_DATABASE_URI&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#039;*****&#039;<\/span><span class=\"token comment\"># \u6570\u636e\u5e93\u57fa\u7840\u914d\u7f6e<\/span><br \/>\ndb <span class=\"token operator\">&#061;<\/span> SQLAlchemy<span class=\"token punctuation\">(<\/span>app<span class=\"token punctuation\">)<\/span><br \/>\nmigrate <span class=\"token operator\">&#061;<\/span> Migrate<span class=\"token punctuation\">(<\/span>app<span class=\"token punctuation\">,<\/span> db<span class=\"token punctuation\">)<\/span> <span class=\"token comment\"># &#xff08;\u5173\u952e\u914d\u7f6e&#xff0c;\u5728\u524d\u8ff0\u6587\u7ae0\u4ee3\u7801\u57fa\u7840\u4e0a\u8fdb\u884c\u6dfb\u52a0\u5373\u53ef&#xff09;<\/span><\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u4e2d&#xff0c;\u5728\u914d\u7f6e\u597d\u6570\u636e\u5e93\u4fe1\u606f\u4ee5\u53ca\u521b\u5efa\u6570\u636e\u5e93\u5bf9\u8c61\u540e&#xff0c;\u9700\u8981\u989d\u5916\u6dfb\u52a0\u4e00\u884c\u4ee3\u7801migrate &#061; Migrate(app, db)&#xff0c;\u6570\u636e\u5e93\u7684\u76f8\u5173\u914d\u7f6e\u53ca\u7528\u6cd5\u53ef\u4ee5\u53c2\u8003\u6211\u4e4b\u524d\u7684\u535a\u5ba2\u6587\u7ae0&#xff1a;python&#043;flask\u540e\u7aef\u5f00\u53d1~\u8fdb\u9636\u7cfb\u5217 | \u5bf9\u8c61\u5173\u7cfb\u6620\u5c04ORN\u6a21\u578b\u4e0e\u6570\u636e\u5e93\u2192\u8868\u4e4b\u95f4\u7684\u6620\u5c04<\/p>\n<ul>\n<li>\u521b\u5efa\u8fc1\u79fb\u811a\u672c<\/li>\n<\/ul>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u521b\u5efa\u8fc1\u79fb\u811a\u672c&#xff1a;<\/p>\n<p>flask db init <span class=\"token comment\"># \u7528\u4e8e\u521d\u59cb\u5316\u8fc1\u79fb\u73af\u5883<\/span><br \/>\nflask db migrate <span class=\"token operator\">&#8211;<\/span>m <span class=\"token string\">&#034;Initial migration.&#034;<\/span> <span class=\"token comment\"># \u7528\u4e8e\u751f\u6210\u8fc1\u79fb\u811a\u672c<\/span><\/p>\n<p>\u4e0a\u8ff0\u547d\u4ee4\u5728\u7ec8\u7aef\u6267\u884c&#xff0c;\u521d\u59cb\u5316\u8fc1\u79fb\u73af\u5883\u7528\u7684\u4ee3\u7801flask db init\u53ea\u9700\u6267\u884c\u4e00\u6b21&#xff0c;\u540e\u7eed\u65e0\u9700\u518d\u6b21\u6267\u884c\u3002<\/p>\n<ul>\n<li>\u5e94\u7528\u8fc1\u79fb<\/li>\n<\/ul>\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u5e94\u7528\u8fc1\u79fb\u811a\u672c&#xff1a;<\/p>\n<p>flask db upgrade<\/p>\n<p>\u4e0a\u8ff0\u4ee3\u7801\u5728\u7ec8\u7aef\u6267\u884c&#xff0c;\u7528\u4e8e\u5b9e\u65f6\u68c0\u6d4b\u6570\u636e\u5e93\u76f8\u5173\u4ee3\u7801\u7684\u4fee\u6539&#xff0c;\u5e76\u5c06\u5176\u540c\u6b65\u5230\u6570\u636e\u5e93\u4e2d<\/p>\n<ul>\n<li>\u56de\u6eda\u8fc1\u79fb<\/li>\n<\/ul>\n<p>\u5982\u679c\u9700\u8981\u56de\u6eda\u5230\u4e4b\u524d\u7684\u7248\u672c&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p>flask db downgrade<\/p>\n<p>\u540c\u6837&#xff0c;\u4e0a\u8ff0\u4ee3\u7801\u5728\u7ec8\u7aef\u6267\u884c&#xff0c;\u7528\u4e8e\u8fd4\u56de\u4e4b\u524d\u7684\u6570\u636e\u5e93\u7248\u672c\u3002<\/p>\n<h2>\u4e09\u3001\u5b9e\u6218\u5e94\u7528\u5b9e\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u5b8c\u6574\u7684\u793a\u4f8b&#xff0c;\u5c55\u793a\u5982\u4f55\u5728 Flask \u9879\u76ee\u4e2d\u4f7f\u7528 Flask-Migrate \u63d2\u4ef6\u3002<\/p>\n<li>\u521b\u5efaFlask\u5e94\u7528(\u76f8\u5173\u4f9d\u8d56\u5747\u5df2\u5b89\u88c5)&#xff1a;<\/li>\n<p><span class=\"token keyword\">from<\/span> flask <span class=\"token keyword\">import<\/span> Flask<span class=\"token punctuation\">,<\/span> render_template<br \/>\n<span class=\"token keyword\">from<\/span> flask_sqlalchemy <span class=\"token keyword\">import<\/span> SQLAlchemy<br \/>\n<span class=\"token keyword\">from<\/span> flask_migrate <span class=\"token keyword\">import<\/span> Migrate<\/p>\n<p>app <span class=\"token operator\">&#061;<\/span> Flask<span class=\"token punctuation\">(<\/span>__name__<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token comment\"># MySQL \u6240\u5728\u7684\u4e3b\u673a\u540d<\/span><br \/>\nHOSTNAME <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;127.0.0.1&#034;<\/span><br \/>\n<span class=\"token comment\"># MYSQL \u76d1\u542c\u7684\u7aef\u53e3\u53f7&#xff0c;\u9ed8\u8ba43306<\/span><br \/>\nPORT <span class=\"token operator\">&#061;<\/span> <span class=\"token number\">3306<\/span><br \/>\n<span class=\"token comment\"># \u8fde\u63a5MySQL\u7684\u7528\u6237\u540d&#xff0c;\u8bfb\u8005\u7528\u81ea\u5df1\u8bbe\u7f6e\u7684<\/span><br \/>\nUSERNAME <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;root&#034;<\/span><br \/>\n<span class=\"token comment\"># \u8fde\u63a5 MYSQL\u7684\u5bc6\u7801&#xff0c;\u8bfb\u8005\u7528\u81ea\u5df1\u7684<\/span><br \/>\nPASSWORD <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;8848dd&#034;<\/span><br \/>\n<span class=\"token comment\"># MYSQL\u4e0a\u521b\u5efa\u7684\u6570\u636e\u5e93\u540d\u79f0<\/span><br \/>\nDATABASE <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;backdb_test&#034;<\/span><\/p>\n<p>app<span class=\"token punctuation\">.<\/span>config<span class=\"token punctuation\">[<\/span><span class=\"token string\">&#039;SQLALCHEMY_DATABASE_URI&#039;<\/span><span class=\"token punctuation\">]<\/span> <span class=\"token operator\">&#061;<\/span> <span class=\"token string-interpolation\"><span class=\"token string\">f&#034;mysql&#043;pymysql:\/\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>USERNAME<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>PASSWORD<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">&#064;<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>HOSTNAME<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">:<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>PORT<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">\/<\/span><span class=\"token interpolation\"><span class=\"token punctuation\">{<\/span>DATABASE<span class=\"token punctuation\">}<\/span><\/span><span class=\"token string\">?charsetut-8mb4&#034;<\/span><\/span><br \/>\n<span class=\"token comment\"># \u5728app.config\u4e2d\u8bbe\u7f6e\u8fde\u63a5\u6570\u636e\u5e93\u7684\u57fa\u672c\u4fe1\u606f<\/span><br \/>\n<span class=\"token comment\"># \u7136\u540e\u4f7f\u7528SQLAlchemy(app)\u521b\u5efa\u4e00\u4e2adb\u5bf9\u8c61<\/span><br \/>\n<span class=\"token comment\"># SQLAlchemy\u4f1a\u81ea\u52a8\u8bfb\u53d6app.config\u4e2d\u7684\u914d\u7f6e\u4fe1\u606f<\/span><br \/>\ndb <span class=\"token operator\">&#061;<\/span> SQLAlchemy<span class=\"token punctuation\">(<\/span>app<span class=\"token punctuation\">)<\/span><\/p>\n<p>migrate <span class=\"token operator\">&#061;<\/span> Migrate<span class=\"token punctuation\">(<\/span>app<span class=\"token punctuation\">,<\/span> db<span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">User<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Model<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># \u521b\u5efa\u4e00\u4e2a\u8868&#xff0c;\u540d\u4e3auser&#xff0c;\u53ef\u81ea\u5b9a\u4e49<\/span><br \/>\n    __tablename__ <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;user&#034;<\/span><br \/>\n    <span class=\"token comment\"># \u6dfb\u52a0\u4e3b\u952e\u5b57\u6bb5&#xff0c;\u5e76\u5b9a\u4e49\u4e86\u7c7b\u578b\u3001\u4e3b\u952e\u3001\u81ea\u589e<\/span><br \/>\n    <span class=\"token builtin\">id<\/span> <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Integer<span class=\"token punctuation\">,<\/span> primary_key <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span> autoincrement <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># \u6dfb\u52a0\u5b57\u6bb5&#xff0c;\u5e76\u6307\u5b9a\u5b57\u7b26\u957f\u5ea6&#xff0c;\u975e\u7a7a<\/span><br \/>\n    username <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>String<span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nullable <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    password <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>String<span class=\"token punctuation\">(<\/span><span class=\"token number\">100<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nullable <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    articles <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>relationship<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;Article&#034;<\/span><span class=\"token punctuation\">,<\/span> back_populates<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;author&#034;<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p><span class=\"token keyword\">class<\/span> <span class=\"token class-name\">Article<\/span><span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Model<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">:<\/span><br \/>\n    <span class=\"token comment\"># \u521b\u5efa\u4e00\u4e2a\u8868&#xff0c;\u540d\u4e3auser&#xff0c;\u53ef\u81ea\u5b9a\u4e49<\/span><br \/>\n    __tablename__ <span class=\"token operator\">&#061;<\/span> <span class=\"token string\">&#034;article&#034;<\/span><br \/>\n    <span class=\"token comment\"># \u6dfb\u52a0\u4e3b\u952e\u5b57\u6bb5&#xff0c;\u5e76\u5b9a\u4e49\u4e86\u7c7b\u578b\u3001\u4e3b\u952e\u3001\u81ea\u589e<\/span><br \/>\n    <span class=\"token builtin\">id<\/span> <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Integer<span class=\"token punctuation\">,<\/span> primary_key<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">,<\/span> autoincrement<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">True<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    title <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>String<span class=\"token punctuation\">(<\/span><span class=\"token number\">200<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> nullable<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    content <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Text<span class=\"token punctuation\">,<\/span> nullable<span class=\"token operator\">&#061;<\/span><span class=\"token boolean\">False<\/span><span class=\"token punctuation\">)<\/span><\/p>\n<p>    <span class=\"token comment\"># \u6dfb\u52a0\u4f5c\u8005\u7684\u5916\u952e<\/span><br \/>\n    author_id <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>Column<span class=\"token punctuation\">(<\/span>db<span class=\"token punctuation\">.<\/span>Integer<span class=\"token punctuation\">,<\/span> db<span class=\"token punctuation\">.<\/span>ForeignKey<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;user.id&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># \u521b\u5efa\u5c5e\u6027\u4e0e\u5176\u5b83\u5bf9\u8c61\u7684\u5173\u7cfb<\/span><br \/>\n    author <span class=\"token operator\">&#061;<\/span> db<span class=\"token punctuation\">.<\/span>relationship<span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;User&#034;<\/span><span class=\"token punctuation\">,<\/span> back_populates<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;articles&#034;<\/span><span class=\"token punctuation\">)<\/span><br \/>\n    <span class=\"token comment\"># author &#061; db.relationship(&#034;User&#034;, backref&#061;&#034;articles&#034;)<\/span><\/p>\n<li>\n<p>\u521d\u59cb\u5316\u8fc1\u79fb\u73af\u5883&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055945-689c29d1a0a22.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/li>\n<li>\n<p>\u751f\u6210\u8fc1\u79fb\u811a\u672c&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055949-689c29d5739c7.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u540c\u65f6&#xff0c;\u5728\u6570\u636e\u5e93\u4e2d\u81ea\u52a8\u751f\u6210\u4e00\u4e2a\u7528\u4e8e\u8bb0\u5f55\u6570\u636e\u5e93\u7248\u672c\u53f7\u7684\u65b0\u8868alembic _version&#xff0c;\u6253\u5f00\u540e\u4e3a\u7a7a&#xff0c;\u662f\u56e0\u4e3a\u5e76\u6ca1\u6709\u6267\u884c\u66f4\u65b0\u547d\u4ee4&#xff0c;\u6b64\u523b\u76f8\u5173\u6709\u5173\u4e8e\u6570\u636e\u5e93\u7684\u76f8\u5173\u4ee3\u7801\u66f4\u6b63\u5e76\u672a\u540c\u6b65\u5230\u6570\u636e\u5e93\u4e2d\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055952-689c29d8f2bd8.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/li>\n<li>\n<p>\u5e94\u7528\u8fc1\u79fb&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055953-689c29d984a61.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> \u6b64\u523b&#xff0c;\u76f8\u5173\u66f4\u6b63\u5df2\u540c\u6b65\u81f3\u6570\u636e\u5e93\u4e2d&#xff0c;\u6570\u636e\u5e93\u7684alembic _version\u8868\u4e2d\u8bb0\u5f55\u4e86\u7b2c\u4e00\u6761\u7248\u672c\u4fe1\u606f\u3002 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055954-689c29da0962a.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/p>\n<\/li>\n<li>\n<p>&#xff08;\u53ef\u9009&#xff09;\u56de\u6eda\u8fc1\u79fb&#xff1a;<\/p>\n<\/li>\n<p>\u5982\u679c\u9700\u8981\u56de\u6eda\u5230\u4e4b\u524d\u7684\u7248\u672c&#xff0c;\u53ef\u4ee5\u5728\u7ec8\u7aef\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4&#xff1a;<\/p>\n<p>flask db downgrade<\/p>\n<p>\u7531\u4e8e\u6211\u5e76\u6ca1\u6709\u4fee\u6539\u6570\u636e\u5e93&#xff0c;\u8fd9\u91cc\u4e0d\u4f5c\u6f14\u793a&#xff0c;\u5927\u5bb6\u53ef\u4ee5\u81ea\u884c\u5c1d\u8bd5&#xff01;&#xff01;&#xff01;<\/p>\n<h2>\u56db\u3001\u7ed3\u675f\u8bed<\/h2>\n<p>\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd&#xff0c;\u4f60\u5df2\u7ecf\u638c\u63e1\u4e86\u5982\u4f55\u5728 Flask \u9879\u76ee\u4e2d\u4f7f\u7528 Flask-Migrate \u63d2\u4ef6\u6765\u7ba1\u7406\u6570\u636e\u5e93\u8fc1\u79fb\u3002Flask-Migrate \u4e0d\u4ec5\u80fd\u591f\u81ea\u52a8\u68c0\u6d4b\u6570\u636e\u5e93\u6a21\u5f0f\u7684\u53d8\u66f4&#xff0c;\u8fd8\u80fd\u901a\u8fc7\u7248\u672c\u63a7\u5236\u673a\u5236\u8f7b\u677e\u7ba1\u7406\u6570\u636e\u5e93\u7684\u7248\u672c\u3002<\/p>\n<p>\u5e0c\u671b\u8fd9\u4e9b\u77e5\u8bc6\u548c\u6280\u80fd\u80fd\u591f\u5e2e\u52a9\u4f60\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\u66f4\u9ad8\u6548\u5730\u7ba1\u7406\u6570\u636e\u5e93&#xff0c;\u63d0\u5347\u5f00\u53d1\u6548\u7387\u548c\u9879\u76ee\u7684\u53ef\u7ef4\u62a4\u6027\u3002<\/p>\n<hr \/>\n<p>\u6700\u540e&#xff0c;\u611f\u8c22\u4f60\u7684\u9605\u8bfb&#xff01;\u5982\u679c\u4f60\u89c9\u5f97\u672c\u6587\u5bf9\u4f60\u6709\u5e2e\u52a9&#xff0c;\u4e0d\u59a8\u70b9\u8d5e\u548c\u5173\u6ce8&#xff0c;\u6211\u4f1a\u7ee7\u7eed\u5206\u4eab\u66f4\u591a\u5173\u4e8e Python \u548c Flask \u5f00\u53d1\u7684\u5b9e\u7528\u77e5\u8bc6\u3002&#x1f680;<\/p>\n<p>\u5173\u6ce8\u4e13\u680f&#xff0c;\u6bcf\u5468\u66f4\u65b0&#xff0c;\u5e26\u4f60\u4ece\u201c\u7b2c\u4e00\u4e2a Flask \u9879\u76ee\u201d\u4e00\u8def\u8fdb\u9636\u5230\u201cDocker \u90e8\u7f72\u3001JWT \u9274\u6743\u3001\u5fae\u670d\u52a1\u62c6\u5206\u201d\u3002<\/p>\n<p>\u7248\u6743\u5f52\u4f5c\u8005\u6240\u6709&#xff0c;\u672a\u7ecf\u8bb8\u53ef\u8bf7\u52ff\u6284\u88ad&#xff0c;\u5957\u7528&#xff0c;\u5546\u7528(\u6216\u5176\u5b83\u5177\u6709\u5229\u76ca\u6027\u884c\u4e3a)\u3002<\/p>\n<p>\u2013 \u6b22\u8fce\u626b\u7801\u5173\u6ce8&#xff1a;\u534e\u5317\u7406\u5de5\u5927\u5b66\u4f4e\u78b3\u4e0e\u667a\u80fd\u51b6\u91d1\u5b9e\u9a8c\u5ba4 <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2025\/08\/20250813055954-689c29da82e5f.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" 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