{"id":32606,"date":"2023-05-31T10:50:34","date_gmt":"2023-05-31T02:50:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=32606"},"modified":"2023-07-31T00:19:15","modified_gmt":"2023-07-30T16:19:15","slug":"%e6%9c%89%e6%b2%a1%e6%9c%89%e4%bb%80%e4%b9%88%e5%9f%ba%e4%ba%8egolang%e7%9a%84orm%e5%8f%af%e4%bb%a5%e5%92%8claravel-eloquent%e7%9b%b8%e5%aa%b2%e7%be%8e%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/32606.html","title":{"rendered":"\u6709\u6ca1\u6709\u4ec0\u4e48\u57fa\u4e8egolang\u7684ORM\u53ef\u4ee5\u548cLaravel Eloquent\u76f8\u5ab2\u7f8e\u7684"},"content":{"rendered":"
\n

golang\u662f\u7c7b\u578b\u4e25\u683c\u7684\u8bed\u8a00\uff08\u597d\u50cf\u662f\u8fd9\u6837\u8bf4\u5427\uff09\uff0c\u540c\u65f6\u4e5f\u6ca1\u6709\u8303\u578b\uff0c\u8fd8\u6ca1\u6709\u7ee7\u627f\uff08\u8fd9\u70b9\u5b9e\u5728\u4e0d\u77e5\u9053\u662f\u600e\u4e48\u8003\u8651\u7684\uff09\uff0c\u57fa\u4e8e\u8fd9\u4e24\u70b9\uff0cgolang\u7684ORM\u4e0d\u53ef\u80fd\u50cfphp\u90a3\u6837\u8bbe\u8ba1\uff0c\u66f4\u4e0d\u53ef\u80fd\u505a\u5230Eloquent\u90a3\u6837\u65b9\u4fbf\u6613\u7528\u3002<\/p>\n<\/blockquote>\n

\n
\"\"<\/figure>\n<\/div>\n

\u4e00\u3001\u57fa\u4e8egolang\u7684ORM\u53ef\u4ee5\u548cLaravel Eloquent\u76f8\u5ab2\u7f8e\u7684<\/strong><\/h2>\n

golang\u662f\u7c7b\u578b\u4e25\u683c\u7684\u8bed\u8a00\uff08\u597d\u50cf\u662f\u8fd9\u6837\u8bf4\u5427\uff09\uff0c\u540c\u65f6\u4e5f\u6ca1\u6709\u8303\u578b\uff0c\u8fd8\u6ca1\u6709\u7ee7\u627f\uff08\u8fd9\u70b9\u5b9e\u5728\u4e0d\u77e5\u9053\u662f\u600e\u4e48\u8003\u8651\u7684\uff09\uff0c\u57fa\u4e8e\u8fd9\u4e24\u70b9\uff0cgolang\u7684ORM\u4e0d\u53ef\u80fd\u50cfphp\u90a3\u6837\u8bbe\u8ba1\uff0c\u66f4\u4e0d\u53ef\u80fd\u505a\u5230Eloquent\u90a3\u6837\u65b9\u4fbf\u6613\u7528\u3002<\/p>\n

\u5f53\u7136\uff0cgolang\u6709struct\u7684\u7ec4\u5408\u53ef\u4ee5\u5f53\u96c6\u6210\uff0c\u4f46\u662f\uff0c\u5047\u8bbe\u7ed9DB\u7ed3\u6784\u4f53\u5b89\u88c5\u4e0a\u4e00\u5806\u65b9\u6cd5\uff0c<\/p>\n

type DB struct {<\/p>\n

}<\/p>\n

func (d *DB) Where(option interface{}) {<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Type := reflect.TypeOf(d).Elem()<\/p>\n

\u00a0\u00a0\u00a0 for i := 0; i < Type.NumField(); i++ {<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 field := Type.Field(i)<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \/\/ do something<\/p>\n

\u00a0\u00a0\u00a0 }<\/p>\n

}<\/p>\n

\u5982\u679c\u5728User\u7ed3\u6784\u4f53\u7ec4\u5408DB\u7ed3\u6784\u4f53<\/p>\n

type User struct {<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 *gorm.DB<\/p>\n

}<\/p>\n

\u8c03\u7528user\u5185\u7684where\u65b9\u6cd5\u5b9e\u9645\u4e0a\u662f\u8c03\u7528\u4e86DB\u5185\u7684where\u65b9\u6cd5\uff0c\u53cd\u5c04\u4e0d\u51fa\u5b57\u6bb5\uff0c\u6240\u4ee5\uff0c\u5728golang\u7684orm\u8bbe\u8ba1\u4e2d\uff0c\u901a\u5e38\u662f\u8fd9\u6837\u505a\u7684\uff1a<\/p>\n

type DB\u00a0 struct {}<\/p>\n

func \uff08db *DB\uff09 where\uff08\uff09{}<\/p>\n

func \uff08db *DB\uff09 select\uff08\uff09{}<\/p>\n

\u4f7f\u7528\u7684\u65f6\u5019\uff1a<\/p>\n

type User struct {}\u00a0 \/\/ \u5b9a\u4e49\u4e00\u4e2auser\u6a21\u578b<\/p>\n

var db DB \/\/\u521d\u59cb\u5316db\u7ed3\u6784\u4f53<\/p>\n

var user User \/\/ \u521d\u59cb\u5316User\u7ed3\u6784\u4f53<\/p>\n

db.where().select(&user)<\/p>\n

\u4e0a\u9762\u662f\u4e24\u4e2a\u8bed\u8a00\u5728\u8bed\u8a00\u5c42\u9762\u5c31\u9020\u6210\u7684\u5dee\u5f02\uff0c\u770b\u4e2a\u4eba\u4e60\u60ef\uff0c\u7528\u8d77\u6765\u90fd\u4e0d\u96be\uff0cgolang\u7684GORM\u548cXORM\u90fd\u5f88\u597d\u7528\uff0c\u6211\u505a\u9879\u76ee\u7684\u65f6\u5019\u7528\u7684\u662fGORM\u3002<\/p>\n

\u81f3\u4e8e\u7c7b\u4f3cEloquent\u529f\u80fd\u7684\u57fa\u4e8egolang\u7684ORM\uff0c\u6211\u627e\u4e86\u5f88\u4e45\uff0c\u6ca1\u6709\u627e\u5230\uff0c\u6bd5\u7adfEloquent\u5185\u6709\u975e\u5e38\u591a\u7684laravel\u652f\u6301\u7c7b\uff0c\u6bd4\u5982collection\u7c7b\uff0c\u5206\u9875\u7c7b\uff0c<\/p>\n

\u9664\u53bbcollection\u548c\u5206\u9875\u7684\u8bdd\uff0c\u6211\u611f\u89c9GORM\u57fa\u672c\u548cEloquent\u7c7b\u4f3c\uff0c\u540c\u6837\u6709\u8868\u95f4\u5173\u7cfb\uff0c\u8f6f\u5220\u9664\u7b49\uff0c\u5f53\u7136\uff0c\u6211\u7684\u9879\u76ee\u8868\u95f4\u5173\u7cfb\u548c\u8f6f\u5220\u9664\u7528\u7684\u975e\u5e38\u591a\uff0c\u5176\u4ed6\u529f\u80fd\u5173\u6ce8\u4e0d\u591a\uff0c\u4e5f\u6ca1\u6ce8\u610f\u3002<\/p>\n

\u81f3\u4e8e\u5177\u4f53\u9009\u54ea\u4e2a\uff0c\u4f60\u81ea\u5df1\u6d4b\u8bd5\u4e00\u4e0b\u597d\u4e86\u3002<\/p>\n

\u5ef6\u4f38\u9605\u8bfb\uff1a<\/strong><\/p>\n

\u4e8c\u3001resultMap \u77e5\u8bc6\u70b9<\/strong><\/h2>\n

resultMap \u5143\u7d20\u7528\u6765\u63cf\u8ff0\u5982\u4f55\u5c06\u7ed3\u679c\u96c6\u6620\u5c04\u5230 Java \u5bf9\u8c61\uff0c\u4f7f\u7528 resultMap \u5bf9\u5217\u8868\u5c55\u793a\u6240\u9700\u7684\u5fc5\u8981\u5b57\u6bb5\u6765\u8fdb\u884c\u81ea\u52a8\u6620\u5c04\uff0c\u7279\u522b\u662f\u5f53\u6570\u636e\u5e93\u7684\u5b57\u6bb5\u540d\u548c\u5b9e\u4f53\u7c7b POJO \u4e2d\u7684\u5c5e\u6027\u540d\u4e0d\u4e00\u81f4\u7684\u60c5\u51b5\u4e0b\uff0c\u6bd4\u5982\u89d2\u8272\u540d\u79f0\uff0c\u5b57\u6bb5\u540d\/\u5217\u540d column \u662f roleName\uff0c\u800c User \u5bf9\u8c61\u7684\u5c5e\u6027\u540d\u5219\u4e3a userRoleName \uff0c\u6b64\u65f6\u5c31\u9700\u8981\u505a\u6620\u5c04\u3002<\/p>\n

resultMap \u5143\u7d20\u7684\u5c5e\u6027\u503c\u548c\u5b50\u8282\u70b9<\/p>\n

id \u5c5e\u6027\uff1a\u5c11\u6570\u6807\u8bc6\uff0c\u6b64 id \u503c\u7528\u4e8e select \u5143\u7d20 resultMap \u5c5e\u6027\u7684\u5f15\u7528\u3002<\/p>\n

type \u5c5e\u6027\uff1a\u8868\u793a\u8be5 resultMap \u7684\u6620\u5c04\u7ed3\u679c\u7c7b\u578b\u3002<\/p>\n

result \u5b50\u8282\u70b9\uff1a\u7528\u4e8e\u6807\u8bc6\u4e00\u4e9b\u7b80\u5355\u5c5e\u6027\uff0c\u5176\u4e2d column \u5c5e\u6027\u8868\u793a\u4ece\u6570\u636e\u5e93\u4e2d\u67e5\u8be2\u7684\u5b57\u6bb5\u540d\u6216\u522b\u540d\uff0c property \u5c5e\u6027\u5219\u8868\u793a\u67e5\u8be2\u51fa\u6765\u7684\u5b57\u6bb5\u5bf9\u5e94\u7684\u503c\u8d4b\u7ed9\u5b9e\u4f53\u5bf9\u8c61\u7684\u54ea\u4e2a\u5c5e\u6027\u3002<\/p>\n

\u8bf4\u660e\uff1aMyBatis \u4e2d\u5728\u5bf9\u67e5\u8be2\u8fdb\u884c select \u6620\u5c04\u7684\u65f6\u5019\uff0c\u8fd4\u56de\u7c7b\u578b\u53ef\u4ee5\u7528 resultType \u4e5f\u53ef\u4ee5\u7528 resultMap \uff0cresultType\u548c resultMap \u6709\u4e00\u5b9a\u5173\u8054\u548c\u533a\u522b\uff0c\u5e94\u7528\u573a\u666f\u4e5f\u4e0d\u540c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"golang\u662f\u7c7b\u578b\u4e25\u683c\u7684\u8bed\u8a00\uff08\u597d\u50cf\u662f\u8fd9\u6837\u8bf4\u5427\uff09\uff0c\u540c\u65f6\u4e5f\u6ca1\u6709\u8303\u578b\uff0c\u8fd8\u6ca1\u6709\u7ee7\u627f\uff08\u8fd9\u70b9\u5b9e\u5728\u4e0d\u77e5\u9053\u662f\u600e\u4e48\u8003\u8651\u7684\uff09\uff0c\u57fa\u4e8e […]","protected":false},"author":1,"featured_media":32607,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/32606"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=32606"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/32606\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/32607"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=32606"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=32606"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=32606"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}