{"id":206358,"date":"2025-06-12T11:03:12","date_gmt":"2025-06-12T03:03:12","guid":{"rendered":"https:\/\/server.hk\/cnblog\/206358\/"},"modified":"2025-06-12T11:03:12","modified_gmt":"2025-06-12T03:03:12","slug":"gorm-%e4%b8%ad%e5%a4%9a%e8%a1%a8%e5%85%b3%e8%81%94%e6%9f%a5%e8%af%a2%ef%bc%9a%e5%a6%82%e4%bd%95%e9%80%9a%e8%bf%87-table1-%e7%9a%84-id-%e6%9f%a5%e8%af%a2%e6%89%80%e6%9c%89%e4%b8%8e%e5%85%b6%e5%85%b3","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/206358\/","title":{"rendered":"GORM \u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7 Table1 \u7684 Id \u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684 Table3 \u6570\u636e\uff1f"},"content":{"rendered":"

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7
\n\u300aGORM \u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7 Table1 \u7684 Id \u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684 Table3 \u6570\u636e\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0
\nGOLANG<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01,
\n,
\ngorm\u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7table1\u7684id\u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684table3\u6570\u636e<\/strong>,gorm\u662f\u4e00\u6b3e\u5f3a\u5927\u7684orm\u6846\u67b6\uff0c\u5b83\u652f\u6301\u5bf9\u591a\u8868\u5173\u8054\u5173\u7cfb\u8fdb\u884c\u9ad8\u6548\u67e5\u8be2\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u5982\u4f55\u5728gorm\u4e2d\u67e5\u8be2\u6240\u6709\u4e0e\u7279\u5b9atable1\u5173\u8054\u7684table3\u6570\u636e\u3002,\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u6a21\u578b\uff0c\u5176\u4e2d\uff1a,\u73b0\u5728\uff0c\u6211\u4eec\u60f3\u8981\u901a\u8fc7table1\u7684id\u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684table3\u6570\u636e\u3002\u671f\u671b\u8fd4\u56de\u7684\u6570\u636e\u7ed3\u6784\u5982\u4e0b\uff1a,\u8981\u5b9e\u73b0\u8fd9\u4e00\u67e5\u8be2\uff0c\u53ef\u4ee5\u4f7f\u7528gorm\u7684preload()\u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u53ef\u4ee5\u8ba9\u6211\u4eec\u5728\u67e5\u8be2\u4e00\u4e2a\u6a21\u578b\u65f6\uff0c\u9884\u52a0\u8f7d\u4e0e\u8be5\u6a21\u578b\u76f8\u5173\u8054\u7684\u6a21\u578b\u3002,\u4ee5\u4e0b\u662f\u67e5\u8be2\u4ee3\u7801\uff1a,\u6b64\u67e5\u8be2\u5c06\u6267\u884c\u5982\u4e0b\u64cd\u4f5c\uff1a,\u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u80fd\u83b7\u53d6\u5230\u671f\u671b\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5176\u4e2dtable1\u8bb0\u5f55\u5305\u542b\u5176\u5173\u8054\u7684table2\u548ctable3\u8bb0\u5f55\u3002,\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGOLANG\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~,gorm\u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7table1\u7684id\u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684table3\u6570\u636e,\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7
\n\u300aGORM \u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7 Table1 \u7684 Id \u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684 Table3 \u6570\u636e\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230
\n<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0
\nGOLANG<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> GORM \u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7 Table1 \u7684 Id \u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684 Table3 \u6570\u636e\uff1f<\/span><\/p>\n

GORM \u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7 Table1 \u7684 Id \u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684 Table3 \u6570\u636e\uff1f<\/h1>\n

2024-11-10 15:58:05<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9\u7bc7\u300aGORM \u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7 Table1 \u7684 Id \u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684 Table3 \u6570\u636e\uff1f\u300b<\/span>\uff0c\u5c31\u575a\u6301\u770b\u4e0b\u53bb\uff0c\u5b66\u4e0b\u53bb\u5427\uff01\u672c\u6587\u4e3b\u8981\u4f1a\u7ed9\u5927\u5bb6\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\u70b9\uff0c\u5982\u679c\u5927\u5bb6\u5bf9\u672c\u6587\u6709\u597d\u7684\u5efa\u8bae\u6216\u8005\u770b\u5230\u6709\u4e0d\u8db3\u4e4b\u5904\uff0c\u975e\u5e38\u6b22\u8fce\u5927\u5bb6\u79ef\u6781\u63d0\u51fa\uff01\u5728\u540e\u7eed\u6587\u7ae0\u6211\u4f1a\u7ee7\u7eed\u66f4\u65b0GOLANG<\/span>\u76f8\u5173\u7684\u5185\u5bb9\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u90fd\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n

<\/p>\n

gorm\u4e2d\u591a\u8868\u5173\u8054\u67e5\u8be2\uff1a\u5982\u4f55\u901a\u8fc7table1\u7684id\u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684table3\u6570\u636e<\/strong><\/p>\n

gorm\u662f\u4e00\u6b3e\u5f3a\u5927\u7684orm\u6846\u67b6\uff0c\u5b83\u652f\u6301\u5bf9\u591a\u8868\u5173\u8054\u5173\u7cfb\u8fdb\u884c\u9ad8\u6548\u67e5\u8be2\u3002\u5728\u672c\u6587\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u5982\u4f55\u5728gorm\u4e2d\u67e5\u8be2\u6240\u6709\u4e0e\u7279\u5b9atable1\u5173\u8054\u7684table3\u6570\u636e\u3002<\/p>\n

\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u6a21\u578b\uff0c\u5176\u4e2d\uff1a<\/p>\n

type table1 struct {\n    id      string  `gorm:\"primary_key\"`\n    table2s []*table2 \/\/has many\n}\n\ntype table2 struct {\n    id      string      `gorm:\"primary_key\"\n    table1id string\n    table3s []*table3   `gorm:\"many2many:table2_table3\"` \/\/many2many\n}\n\ntype table3 struct {\n    id string `gorm:\"primary_key\"`\n}<\/pre>\n
\u73b0\u5728\uff0c\u6211\u4eec\u60f3\u8981\u901a\u8fc7table1\u7684id\u67e5\u8be2\u6240\u6709\u4e0e\u5176\u5173\u8054\u7684table3\u6570\u636e\u3002\u671f\u671b\u8fd4\u56de\u7684\u6570\u636e\u7ed3\u6784\u5982\u4e0b\uff1a<\/p>\n
table1:{\n    id:xxx,\n    table2s:[\n        {\n            id:xxxxxx,\n            table3s:[\n                {id:x},\n                {id:xx},\n                ...\n            ]\n        },\n        ...\n    ]\n}<\/pre>\n
\u8981\u5b9e\u73b0\u8fd9\u4e00\u67e5\u8be2\uff0c\u53ef\u4ee5\u4f7f\u7528gorm\u7684preload()\u65b9\u6cd5\u3002\u8be5\u65b9\u6cd5\u53ef\u4ee5\u8ba9\u6211\u4eec\u5728\u67e5\u8be2\u4e00\u4e2a\u6a21\u578b\u65f6\uff0c\u9884\u52a0\u8f7d\u4e0e\u8be5\u6a21\u578b\u76f8\u5173\u8054\u7684\u6a21\u578b\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u67e5\u8be2\u4ee3\u7801\uff1a<\/p>\n
var data []Table1\ndb.Preload(\"Table2\").Preload(\"Table2.Table3\").Find(&data)<\/pre>\n
\u6b64\u67e5\u8be2\u5c06\u6267\u884c\u5982\u4e0b\u64cd\u4f5c\uff1a<\/p>\n
    \n
  1. \u9996\u5148\u67e5\u8be2\u6240\u6709table1\u8bb0\u5f55\u3002<\/li>\n
  2. \u5bf9\u4e8e\u6bcf\u4e2atable1\u8bb0\u5f55\uff0c\u9884\u52a0\u8f7d\u5176\u5173\u8054\u7684table2\u8bb0\u5f55\u3002<\/li>\n
  3. \u5bf9\u4e8e\u6bcf\u4e2atable2\u8bb0\u5f55\uff0c\u9884\u52a0\u8f7d\u5176\u5173\u8054\u7684table3\u8bb0\u5f55\u3002<\/li>\n<\/ol>\n
    \u8fd9\u6837\uff0c\u6211\u4eec\u5c31\u80fd\u83b7\u53d6\u5230\u671f\u671b\u7684\u6570\u636e\u7ed3\u6784\uff0c\u5176\u4e2dtable1\u8bb0\u5f55\u5305\u542b\u5176\u5173\u8054\u7684table2\u548ctable3\u8bb0\u5f55\u3002<\/p>\n
    \u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8eGOLANG\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n
    \n
    \n <\/dt>\n
    \n   \u5982\u4f55\u7528 CSS \u6a21\u62df\u4e0d\u5f71\u54cd\u5176\u4ed6\u5143\u7d20\u7684\u94fe\u63a5\u79fb\u5165\u6548\u679c\uff1f\n <\/dd>\n<\/dl>\n
    \n
    \n <\/dt>\n
    \n   \u5728\u7535\u8111\u770b\u5feb\u624b\u76f4\u64ad\u53ef\u4ee5\u62a2\u7ea2\u5305\u5417\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
    \u4e00\u5206\u8015\u8018\uff0c\u4e00\u5206\u6536\u83b7\uff01\u65e2\u7136\u90fd\u6253\u5f00\u8fd9...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-206358","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=206358"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/206358\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=206358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=206358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=206358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}