{"id":208116,"date":"2025-07-08T10:44:52","date_gmt":"2025-07-08T02:44:52","guid":{"rendered":"https:\/\/server.hk\/cnblog\/208116\/"},"modified":"2025-07-08T10:44:52","modified_gmt":"2025-07-08T02:44:52","slug":"%e5%a6%82%e4%bd%95%e9%98%b2%e6%ad%a2%e4%bb%8e-spa-%e5%88%9b%e5%bb%ba%e5%af%b9%e8%b1%a1%e6%97%b6%e5%87%ba%e7%8e%b0%e9%87%8d%e5%a4%8d%e7%9a%84-id%ef%bc%9f%e6%88%96%e8%80%85%e6%88%91%e5%ba%94%e8%af%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208116\/","title":{"rendered":"\u5982\u4f55\u9632\u6b62\u4ece SPA \u521b\u5efa\u5bf9\u8c61\u65f6\u51fa\u73b0\u91cd\u590d\u7684 id\uff1f\u6216\u8005\u6211\u5e94\u8be5\u7559\u5728\u6570\u636e\u5e93\u4e2d\uff1f"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5982\u4f55\u9632\u6b62\u4ece SPA \u521b\u5efa\u5bf9\u8c61\u65f6\u51fa\u73b0\u91cd\u590d\u7684 id\uff1f\u6216\u8005\u6211\u5e94\u8be5\u7559\u5728\u6570\u636e\u5e93\u4e2d\uff1f<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-29 09:18:36<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6b22\u8fce\u5404\u4f4d\u5c0f\u4f19\u4f34\u6765\u5230\uff0c\u76f8\u805a\u4e8e\u6b64\u90fd\u662f\u7f18\u54c8\u54c8\u54c8\uff01\u4eca\u5929\u6211\u7ed9\u5927\u5bb6\u5e26\u6765\u300a\u5982\u4f55\u9632\u6b62\u4ece SPA \u521b\u5efa\u5bf9\u8c61\u65f6\u51fa\u73b0\u91cd\u590d\u7684 id\uff1f\u6216\u8005\u6211\u5e94\u8be5\u7559\u5728\u6570\u636e\u5e93\u4e2d\uff1f\u300b<\/span>\uff0c\u8fd9\u7bc7\u6587\u7ae0\u4e3b\u8981\u8bb2\u5230<\/span>\u7b49\u7b49\u77e5\u8bc6\uff0c\u5982\u679c\u4f60\u5bf9Golang<\/span>\u76f8\u5173\u7684\u77e5\u8bc6\u975e\u5e38\u611f\u5174\u8da3\u6216\u8005\u6b63\u5728\u81ea\u5b66\uff0c\u90fd\u53ef\u4ee5\u5173\u6ce8\u6211\uff0c\u6211\u4f1a\u6301\u7eed\u66f4\u65b0\u76f8\u5173\u6587\u7ae0\uff01\u5f53\u7136\uff0c\u6709\u4ec0\u4e48\u5efa\u8bae\u4e5f\u6b22\u8fce\u5728\u8bc4\u8bba\u7559\u8a00\u63d0\u51fa\uff01\u4e00\u8d77\u5b66\u4e60\uff01<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6709\u4e00\u4e2a react \u5e94\u7528\u7a0b\u5e8f\uff0c\u5b83\u4ece golang api \u83b7\u53d6\u6570\u636e\uff0c\u800c golang api \u4ece postgres \u6570\u636e\u5e93\u67e5\u8be2\u6570\u636e\u3002\u6211\u7684\u6a21\u578b\u4e4b\u4e00\u662f\u6df1\u5ea6\u5d4c\u5957\u7684 json\uff0c\u56e0\u6b64\u6211\u5728 postgres \u4e2d\u4f7f\u7528\u4e86 jsonb \u6570\u636e\u7c7b\u578b\u3002<\/p>\n

create table rules (\n    id serial primary key,\n    rule jsonb\n);<\/pre>\n
\u5728golang\u4e2d\uff0c\u6211\u6709\u7ed3\u6784<\/p>\n
type rule struct {\n    id int `json:\"id\"`\n    name string `json:\"name\"`\n    ...succeeding fields are deeply nested data\n}<\/pre>\n
\u5728 spa \u4e2d\u6211\u6709\u6a21\u578b<\/p>\n
interface rule {\n    id number\n    name string\n    ....same as from the golang api model\n}<\/pre>\n
\u4e3a\u4e86\u5728 spa \u4e2d\u521b\u5efa\u65b0\u7684 rule<\/code> \u5bf9\u8c61\uff0c\u6211\u5c06 0<\/code> \u5206\u914d\u7ed9 id<\/code>\u3002\u65b0\u521b\u5efa\u7684\u89c4\u5219\u5c06\u53d1\u9001\u5230 golang rest api\u3002\u7136\u540e\u5728 api \u4e2d\uff0c\u6211\u9996\u5148\u5411 postgres \u6570\u636e\u5e93\u8be2\u95ee\u5e8f\u5217 id \u7684\u4e0b\u4e00\u4e2a\u503c\uff08\u4f7f\u7528 postgres nextval<\/code>\uff09\uff0c\u5c06\u83b7\u53d6\u7684 id \u5206\u914d\u5230\u89c4\u5219\u7ed3\u6784 id \u5b57\u6bb5\u4e2d\uff0c<\/p>\n
nextvalidid := <result of nextval>\nrule.id = nextvalidid<\/pre>\n
json \u7f16\u7ec4\u89c4\u5219\u5bf9\u8c61\u7136\u540e\u63d2\u5165\u5230\u6570\u636e\u5e93<\/p>\n
ruleBytes, _ := json.Marshal(rule)\nINSERT INTO rules_table VALUES (<nextValidId>, <ruleBytes>);<\/pre>\n
\u8fd9\u6837\u6211\u5c31\u907f\u514d\u4e86\u91cd\u590d\u7684 id\uff0c\u5982\u679c spa \u6b63\u5728\u5904\u7406 id \u751f\u6210\uff0c\u5219\u53ef\u80fd\u4f1a\u51fa\u73b0\u91cd\u590d\u7684 id\u3002\u7136\u800c\uff0c\u6211\u53d1\u73b0\u6211\u7684\u65b9\u6cd5\u5df2\u7ecf\u6709\u4e9b\u590d\u6742\u4e86\u3002\u6211\u77e5\u9053\u6211\u4e5f\u53ef\u4ee5\u4ece spa \u751f\u6210 id\uff0c\u4f46\u662f\u5982\u4f55\u5728\u4e0d\u4f7f\u7528\u4e0a\u9762\u4f7f\u7528\u7684\u65b9\u6cd5\u7684\u60c5\u51b5\u4e0b\u907f\u514d\u91cd\u590d\u7684 id\uff1f\u8fd8\u662f\u6211\u60f3\u592a\u591a\u4e86\uff1f <\/p>\n
\u66f4\u65b01\uff1a \u6211\u8fd8\u8003\u8651\u8fc7\u5728 golang \u4e2d\u6dfb\u52a0\u53e6\u4e00\u4e2a\u6ca1\u6709 id<\/code> \u5b57\u6bb5\u7684\u89c4\u5219\u7ed3\u6784\uff0c\u8fd9\u6837\u6211\u5c31\u4e0d\u5fc5\u4f7f\u7528 nextval<\/code> \u53ea\u662f\u5c06 id \u653e\u5165 json \u4e2d\uff0c\u4f46\u662f\u62e5\u6709\u591a\u4e2a\u7528\u4e8e\u4ece\u6570\u636e\u5e93\u63d2\u5165\u548c\u68c0\u7d22\u7684\u6a21\u578b\u662f\u4e00\u4e2a\u5f88\u597d\u7684\u7f16\u7a0b\u8bbe\u8ba1\u5417\u4ee5\u53ca\u53e6\u4e00\u79cd\u54cd\u5e94 spa \u7684\u6a21\u578b\uff1f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u8ba9\u6570\u636e\u5e93\u751f\u6210\u65b0\u7684 id\uff0c\u56e0\u4e3a\u5b83\u6b63\u662f \u3002<\/p>\n
\u5728golang\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u548c.scan()<\/code>\u4f7f\u7528\u63d2\u5165\u65b0\u8bb0\u5f55\u5e76\u68c0\u7d22\u751f\u6210\u7684id\uff0c\u4f8b\u5982\uff1a<\/p>\n
var newId int\nquery := \"INSERT INTO rules (rule) VALUES ($1) RETURNING id\"\nerr := db.QueryRow(query, newRule).Scan(&newId)\n\/\/ TODO: check err\nlog.Printf(\"newId=%d\", newId)<\/pre>\n
\u4ee5\u4e0a\u5c31\u662f\u672c\u6587\u7684\u5168\u90e8\u5185\u5bb9\u4e86\uff0c\u662f\u5426\u6709\u987a\u5229\u5e2e\u52a9\u4f60\u89e3\u51b3\u95ee\u9898\uff1f\u82e5\u662f\u80fd\u7ed9\u4f60\u5e26\u6765\u5b66\u4e60\u4e0a\u7684\u5e2e\u52a9\uff0c\u8bf7\u5927\u5bb6\u591a\u591a\u652f\u6301\uff01\u66f4\u591a\u5173\u4e8eGolang\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u4e5f\u53ef\u5173\u6ce8\u516c\u4f17\u53f7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/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-208116","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208116","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=208116"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/208116\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=208116"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=208116"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=208116"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}