{"id":97172,"date":"2024-10-20T15:36:17","date_gmt":"2024-10-20T07:36:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/97172\/"},"modified":"2024-10-20T15:36:18","modified_gmt":"2024-10-20T07:36:18","slug":"rails-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%e5%85%a8%e6%94%bb%e7%95%a5-rails-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/97172\/","title":{"rendered":"Rails \u6578\u64da\u5eab\u9077\u79fb\u5168\u653b\u7565 (rails \u6578\u64da\u5eab\u9077\u79fb)"},"content":{"rendered":"<h1 id=\"rails-%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%e5%85%a8%e6%94%bb%e7%95%a5-OGDWsyFcjS\">Rails \u6578\u64da\u5eab\u9077\u79fb\u5168\u653b\u7565<\/h1>\n<p>\u5728\u958b\u767c Ruby on Rails \u61c9\u7528\u7a0b\u5f0f\u6642\uff0c\u6578\u64da\u5eab\u9077\u79fb\u662f\u4e00\u500b\u81f3\u95dc\u91cd\u8981\u7684\u904e\u7a0b\u3002\u6578\u64da\u5eab\u9077\u79fb\u5141\u8a31\u958b\u767c\u8005\u5728\u4e0d\u4e1f\u5931\u6578\u64da\u7684\u60c5\u6cc1\u4e0b\uff0c\u5c0d\u6578\u64da\u5eab\u7d50\u69cb\u9032\u884c\u4fee\u6539\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Rails \u6578\u64da\u5eab\u9077\u79fb\u7684\u57fa\u672c\u6982\u5ff5\u3001\u64cd\u4f5c\u6b65\u9a5f\u53ca\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%ef%bc%9f-OGDWsyFcjS\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u9077\u79fb\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u9077\u79fb\u662f\u6307\u5c0d\u6578\u64da\u5eab\u7d50\u69cb\u9032\u884c\u7248\u672c\u63a7\u5236\u7684\u904e\u7a0b\u3002Rails \u63d0\u4f9b\u4e86\u4e00\u500b\u5f37\u5927\u7684\u9077\u79fb\u7cfb\u7d71\uff0c\u5141\u8a31\u958b\u767c\u8005\u4ee5 Ruby \u8a9e\u8a00\u7de8\u5beb\u9077\u79fb\u8173\u672c\uff0c\u9019\u4e9b\u8173\u672c\u53ef\u4ee5\u7528\u4f86\u5275\u5efa\u3001\u4fee\u6539\u6216\u522a\u9664\u6578\u64da\u8868\u53ca\u5176\u6b04\u4f4d\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e4%bd%bf%e7%94%a8%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%ef%bc%9f-OGDWsyFcjS\">\u70ba\u4ec0\u9ebc\u4f7f\u7528\u6578\u64da\u5eab\u9077\u79fb\uff1f<\/h2>\n<ul>\n<li><strong>\u7248\u672c\u63a7\u5236\uff1a<\/strong>\u6bcf\u6b21\u9077\u79fb\u90fd\u6703\u751f\u6210\u4e00\u500b\u552f\u4e00\u7684\u7248\u672c\u865f\uff0c\u9019\u4f7f\u5f97\u5718\u968a\u53ef\u4ee5\u8f15\u9b06\u8ffd\u8e64\u6578\u64da\u5eab\u7684\u8b8a\u66f4\u6b77\u53f2\u3002<\/li>\n<li><strong>\u53ef\u91cd\u8907\u6027\uff1a<\/strong>\u9077\u79fb\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u74b0\u5883\u4e2d\u91cd\u8907\u57f7\u884c\uff0c\u78ba\u4fdd\u958b\u767c\u3001\u6e2c\u8a66\u548c\u751f\u7522\u74b0\u5883\u7684\u4e00\u81f4\u6027\u3002<\/li>\n<li><strong>\u6578\u64da\u5b89\u5168\uff1a<\/strong>\u9077\u79fb\u904e\u7a0b\u4e2d\u53ef\u4ee5\u4fdd\u7559\u73fe\u6709\u6578\u64da\uff0c\u907f\u514d\u6578\u64da\u4e1f\u5931\u7684\u98a8\u96aa\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb%ef%bc%9f-OGDWsyFcjS\">\u5982\u4f55\u5275\u5efa\u6578\u64da\u5eab\u9077\u79fb\uff1f<\/h2>\n<p>\u5728 Rails \u4e2d\uff0c\u5275\u5efa\u6578\u64da\u5eab\u9077\u79fb\u975e\u5e38\u7c21\u55ae\u3002\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u53ef\u4ee5\u751f\u6210\u4e00\u500b\u65b0\u7684\u9077\u79fb\u6587\u4ef6\uff1a<\/p>\n<pre><code>rails generate migration AddFieldToUsers<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u6703\u5728 `db\/migrate` \u76ee\u9304\u4e0b\u751f\u6210\u4e00\u500b\u65b0\u7684\u9077\u79fb\u6587\u4ef6\uff0c\u6587\u4ef6\u540d\u6703\u5305\u542b\u7576\u524d\u7684\u6642\u9593\u6233\u3002\u63a5\u4e0b\u4f86\uff0c\u60a8\u53ef\u4ee5\u5728\u751f\u6210\u7684\u6587\u4ef6\u4e2d\u7de8\u5beb\u9077\u79fb\u908f\u8f2f\u3002\u4f8b\u5982\uff0c\u82e5\u8981\u5411 `users` \u8868\u4e2d\u6dfb\u52a0\u4e00\u500b `age` \u6b04\u4f4d\uff0c\u53ef\u4ee5\u9019\u6a23\u7de8\u5beb\uff1a<\/p>\n<pre><code>class AddAgeToUsers &lt; ActiveRecord::Migration[6.0]\n  def change\n    add_column :users, :age, :integer\n  end\nend<\/code><\/pre>\n<h2 id=\"%e5%9f%b7%e8%a1%8c%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb-OGDWsyFcjS\">\u57f7\u884c\u6578\u64da\u5eab\u9077\u79fb<\/h2>\n<p>\u7de8\u5beb\u5b8c\u9077\u79fb\u5f8c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u57f7\u884c\u9077\u79fb\uff1a<\/p>\n<pre><code>rails db:migrate<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u6703\u6839\u64da\u9077\u79fb\u6587\u4ef6\u4e2d\u7684\u5b9a\u7fa9\uff0c\u66f4\u65b0\u6578\u64da\u5eab\u7d50\u69cb\u3002\u82e5\u8981\u67e5\u770b\u7576\u524d\u7684\u9077\u79fb\u72c0\u614b\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre><code>rails db:migrate:status<\/code><\/pre>\n<h2 id=\"%e5%9b%9e%e6%bb%be%e6%95%b8%e6%93%9a%e5%ba%ab%e9%81%b7%e7%a7%bb-OGDWsyFcjS\">\u56de\u6efe\u6578\u64da\u5eab\u9077\u79fb<\/h2>\n<p>\u5982\u679c\u9700\u8981\u64a4\u92b7\u6700\u8fd1\u7684\u9077\u79fb\uff0c\u53ef\u4ee5\u4f7f\u7528\u56de\u6efe\u547d\u4ee4\uff1a<\/p>\n<pre><code>rails db:rollback<\/code><\/pre>\n<p>\u9019\u689d\u547d\u4ee4\u6703\u64a4\u92b7\u6700\u5f8c\u4e00\u6b21\u57f7\u884c\u7684\u9077\u79fb\u3002\u5982\u679c\u9700\u8981\u56de\u6efe\u591a\u6b21\uff0c\u53ef\u4ee5\u4f7f\u7528 `STEP` \u53c3\u6578\u4f86\u6307\u5b9a\u56de\u6efe\u7684\u6b21\u6578\uff1a<\/p>\n<pre><code>rails db:rollback STEP=2<\/code><\/pre>\n<h2 id=\"%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-OGDWsyFcjS\">\u6700\u4f73\u5be6\u8e10<\/h2>\n<ul>\n<li><strong>\u4fdd\u6301\u9077\u79fb\u7c21\u6f54\uff1a<\/strong>\u6bcf\u6b21\u9077\u79fb\u61c9\u8a72\u53ea\u505a\u4e00\u4ef6\u4e8b\uff0c\u9019\u6a23\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u8ffd\u8e64\u548c\u7ba1\u7406\u3002<\/li>\n<li><strong>\u6e2c\u8a66\u9077\u79fb\uff1a<\/strong>\u5728\u958b\u767c\u74b0\u5883\u4e2d\u6e2c\u8a66\u9077\u79fb\uff0c\u78ba\u4fdd\u5176\u4e0d\u6703\u5c0e\u81f4\u6578\u64da\u4e1f\u5931\u6216\u932f\u8aa4\u3002<\/li>\n<li><strong>\u4f7f\u7528\u7a2e\u5b50\u6578\u64da\uff1a<\/strong>\u5728\u9077\u79fb\u5f8c\u4f7f\u7528\u7a2e\u5b50\u6578\u64da\u586b\u5145\u6578\u64da\u5eab\uff0c\u9019\u6a23\u53ef\u4ee5\u65b9\u4fbf\u6e2c\u8a66\u548c\u958b\u767c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-OGDWsyFcjS\">\u7e3d\u7d50<\/h2>\n<p>Rails \u6578\u64da\u5eab\u9077\u79fb\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u958b\u767c\u8005\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u7d50\u69cb\u7684\u8b8a\u66f4\u3002\u901a\u904e\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u60a8\u53ef\u4ee5\u78ba\u4fdd\u6578\u64da\u5eab\u7684\u7a69\u5b9a\u6027\u548c\u5b89\u5168\u6027\u3002\u82e5\u60a8\u9700\u8981\u9032\u4e00\u6b65\u4e86\u89e3\u5982\u4f55\u5728\u9999\u6e2f\u4f7f\u7528 <a href=\"https:\/\/server.hk\">VPS<\/a> \u9032\u884c Rails \u958b\u767c\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u8a0a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u638c\u63e1Rails\u6578\u64da\u5eab\u9077\u79fb\u7684\u5168\u653b\u7565\uff0c\u5b78\u7fd2\u5982\u4f55\u6709\u6548\u7ba1\u7406\u6578\u64da\u7d50\u69cb\u8b8a\u66f4\uff0c\u63d0\u5347\u958b\u767c\u6548\u7387\u8207\u6578\u64da\u4e00\u81f4\u6027\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-97172","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97172","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"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=97172"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97172\/revisions"}],"predecessor-version":[{"id":97173,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/97172\/revisions\/97173"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=97172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=97172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=97172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}