{"id":47810,"date":"2023-03-27T09:45:19","date_gmt":"2024-01-15T06:09:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8graphql-ruby%e4%b8%ad%e7%9a%84visibility%e5%8a%9f%e8%83%bd\/"},"modified":"2024-04-29T20:43:23","modified_gmt":"2024-04-29T12:43:23","slug":"%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8graphql-ruby%e4%b8%ad%e7%9a%84visibility%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8graphql-ruby%e4%b8%ad%e7%9a%84visibility%e5%8a%9f%e8%83%bd\/","title":{"rendered":"\u5c1d\u8bd5\u4f7f\u7528graphql-ruby\u4e2d\u7684&#8221;visibility&#8221;\u529f\u80fd"},"content":{"rendered":"<h1>&#8220;Visibility&#8221; \u7684\u610f\u601d\u662f\u4ec0\u4e48\uff1f (Visibility de yisi shi shenme?)<\/h1>\n<p>\u5728GraphQL\u4e2d\uff0c\u5b83\u7684\u610f\u601d\u5c31\u50cf\u76f4\u8bd1\u7684\u542b\u4e49\u90a3\u6837\uff0c\u8868\u793a\u7c7b\u578b\u548c\u5b57\u6bb5\u7684\u53ef\u89c1\u6027\u3002<\/p>\n<p>\u53ef\u4ee5\u901a\u8fc7\u4e0d\u5411\u672a\u7ecf\u8bb8\u53ef\u7684\u5ba2\u6237\u663e\u793a\u7279\u5b9a\u7684\u7c7b\u578b\u6216\u5b57\u6bb5\u6765\u8fdb\u884c\u9650\u5236\u3002<\/p>\n<p>\u5f53\u7136\uff0c\u7531\u4e8e\u65e0\u6cd5\u67e5\u770btype\u6216field\uff0c\u5373\u4f7f\u6307\u5b9a\u4e86type\u548cfield\u53d1\u9001\u67e5\u8be2\u4e5f\u65e0\u6cd5\u8fd4\u56de\u503c\u3002<\/p>\n<h3>\u7528\u4f8b<\/h3>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u958b\u767a\u4e2d\u306e\u30b9\u30ad\u30fc\u30de\u60c5\u5831\u3092\u5916\u90e8\u306b\u516c\u958b\u3057\u305f\u304f\u306a\u3044\u3068\u304d<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u7279\u5b9a\u306e\u30e6\u30fc\u30b6\u306b\u3057\u304b\u30b9\u30ad\u30fc\u30de\u60c5\u5831\u3092\u77e5\u3089\u308c\u305f\u304f\u306a\u3044\u3068\u304d\u3001\u4f7f\u308f\u305b\u305f\u304f\u306a\u3044\u3068\u304d<\/ul>\n<p>\u542c\u8bf4Gitlab\u4e5f\u5728\u4f7f\u7528\u7684\u6837\u5b50\u5462\u3002<\/p>\n<p>\u8bf7\u628a\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u91ca\u4e49\uff0c\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a<\/p>\n<p>https:\/\/docs.gitlab.com\/ee\/development\/api_graphql_styleguide.html#feature-flags<\/p>\n<p>GitLab\u7684\u5feb\u7167\u4e2d\u6709\u6709\u5173API\u548cGraphQL\u7684\u7279\u6027\u6807\u5fd7\u7684\u6837\u5f0f\u6307\u5357\u3002<\/p>\n<h3>\u8eab\u4efd\u9a8c\u8bc1\u7684\u533a\u522b<\/h3>\n<p>\u8207\u8eab\u4efd\u9a57\u8b49\u4e0d\u540c\u7684\u662f\uff0c\u4e0d\u6703\u5411\u672a\u7d93\u8a31\u53ef\u7684\u5ba2\u6236\u7aef\u516c\u958b\u985e\u578b\u6216\u5b57\u6bb5\u7684\u5b58\u5728\u3002<\/p>\n<p>\u901a\u8fc7\u4f7f\u7528visibility\uff0c\u5373\u4f7f\u672a\u7ecf\u8bb8\u53ef\u7684\u5ba2\u6237\u7aef\u6267\u884cintrospection\uff0c\u4e5f\u53ef\u4ee5\u786e\u4fdd\u4e0d\u8fd4\u56de\u7279\u5b9a\u7684\u7c7b\u578b\u6216\u5b57\u6bb5\u3002<\/p>\n<h1>\u8fd9\u662f\u4ec0\u4e48\u884c\u4e3a\uff1f<\/h1>\n<p>\u8ba9\u6211\u4eec\u4ee5\u4e00\u4e2a\u7b80\u5355\u7684\u5bf9\u8c61\u7c7b\u578b\u4e3a\u4f8b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">QueryType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n    <span class=\"n\">field<\/span> <span class=\"ss\">:first_user<\/span><span class=\"p\">,<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">UserType<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">first_user<\/span>\r\n      <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">first<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Types::UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n  <span class=\"n\">field<\/span> <span class=\"ss\">:name<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n\r\n  <span class=\"k\">def<\/span> <span class=\"nf\">name<\/span>\r\n    <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u63a5\u4e0b\u6765\uff0c\u4f7f\u7528print_schema\u5c06\u4e0a\u8ff0\u6a21\u578b\u8f6c\u6362\u4e3aSDL\u3002<\/p>\n<p>\u56e0\u4e3a\u6211\u662f\u7528rails\u5b9e\u73b0\u7684\uff0c\u6240\u4ee5\u6211\u4f7f\u7528rails\u63a7\u5236\u53f0\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u6211\u4eec\u5c06\u7701\u7565schema\u7c7b\u7684\u63cf\u8ff0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">\u276f<\/span> <span class=\"n\">rails<\/span> <span class=\"n\">c<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">printer<\/span> <span class=\"o\">=<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"no\">GraphqlTestSchema<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"nb\">puts<\/span> <span class=\"n\">printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">print_schema<\/span>\r\n\r\n<span class=\"n\">type<\/span> <span class=\"no\">Query<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"ss\">firstUser: <\/span><span class=\"no\">User<\/span><span class=\"o\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n\r\n<span class=\"n\">type<\/span> <span class=\"no\">User<\/span> <span class=\"p\">{<\/span>\r\n  <span class=\"ss\">name: <\/span><span class=\"no\">String<\/span><span class=\"o\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u6211\u8ba4\u4e3a\u901a\u5e38\u53ef\u4ee5\u901a\u8fc7\u8fd9\u79cd\u65b9\u5f0f\u6765\u67e5\u770b\u6a21\u5f0f\u5b9a\u4e49\u3002<\/p>\n<p>\u7136\u800c\uff0c\u6211\u60f3\u4f7f\u7528graphql-ruby\u7684visibility\u529f\u80fd\uff0c\u5c06object type\u5b8c\u5168\u9690\u85cf\u8d77\u6765\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Types::UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n  <span class=\"n\">field<\/span> <span class=\"ss\">:name<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n\r\n\t<span class=\"c1\"># \u8ffd\u52a0\u3057\u305f\u30e1\u30bd\u30c3\u30c9<\/span>\r\n\t<span class=\"k\">def<\/span> <span class=\"nc\">self<\/span><span class=\"o\">.<\/span><span class=\"nf\">visible?<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"p\">)<\/span>\r\n    <span class=\"kp\">false<\/span>\r\n  <span class=\"k\">end<\/span>\r\n\r\n  <span class=\"k\">def<\/span> <span class=\"nf\">name<\/span>\r\n    <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u8bf7\u518d\u6b21\u8fd0\u884cprint_schema\u51fd\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">\u276f<\/span> <span class=\"n\">rails<\/span> <span class=\"n\">c<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">printer<\/span> <span class=\"o\">=<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"no\">GraphqlTestSchema<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"nb\">puts<\/span> <span class=\"n\">printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">print_schema<\/span>\r\n\r\n<span class=\"n\">type<\/span> <span class=\"no\">Query<\/span> <span class=\"p\">{<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u968f\u540e\uff0ctype User\u6d88\u5931\u4e86\uff0c\u800c\u5305\u542b\u8be5\u7c7b\u578b\u7684\u67e5\u8be2firstUser\u4e5f\u65e0\u6cd5\u88ab\u770b\u5230\u4e86\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5982\u679c\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u67e5\u8be2\uff0c\u5982\u679c\u6ca1\u6709\u540d\u4e3afirstUser\u7684\u67e5\u8be2\u7c7b\u578b\uff0c\u5c06\u8fd4\u56de\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">\u276f<\/span> <span class=\"n\">rails<\/span> <span class=\"n\">c<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">query<\/span> <span class=\"o\">=<\/span> <span class=\"s2\">\"{\r\n\t  firstUser {\r\n      name\r\n    }\r\n  }\"<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"no\">GraphqlTestSchema<\/span><span class=\"p\">.<\/span><span class=\"nf\">execute<\/span><span class=\"p\">(<\/span><span class=\"n\">query<\/span><span class=\"p\">).<\/span><span class=\"nf\">to_h<\/span>\r\n<span class=\"p\">{<\/span><span class=\"s2\">\"errors\"<\/span><span class=\"o\">=&gt;<\/span>                                                                  \r\n  <span class=\"p\">[{<\/span><span class=\"s2\">\"message\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"s2\">\"Field 'firstUser' doesn't exist on type 'Query'\"<\/span><span class=\"p\">,<\/span>            \r\n    <span class=\"s2\">\"locations\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"p\">[{<\/span><span class=\"s2\">\"line\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"mi\">2<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"column\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"mi\">5<\/span><span class=\"p\">}],<\/span>                                 \r\n    <span class=\"s2\">\"path\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"p\">[<\/span><span class=\"s2\">\"query\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"firstUser\"<\/span><span class=\"p\">],<\/span>                                          \r\n    <span class=\"s2\">\"extensions\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"p\">{<\/span><span class=\"s2\">\"code\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"s2\">\"undefinedField\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"typeName\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"s2\">\"Query\"<\/span><span class=\"p\">,<\/span> <span class=\"s2\">\"fieldName\"<\/span><span class=\"o\">=&gt;<\/span><span class=\"s2\">\"firstUser\"<\/span><span class=\"p\">}}]}<\/span>\r\n<\/code><\/pre>\n<h1>\u5b9e\u65bd\u7b56\u7565<\/h1>\n<p>\u6d4f\u89c8\u8fd9\u4e2a\u9875\u9762\u540e\uff0c\u6211\u53d1\u73b0\u6709\u5f88\u591a\u79cd\u65b9\u6cd5\u3002<\/p>\n<p>\u8bf7\u4ee5\u4e2d\u6587\u539f\u751f\u65b9\u5f0f\u89e3\u91ca\u4ee5\u4e0b\u94fe\u63a5\u7684\u5185\u5bb9\uff1ahttps:\/\/graphql-ruby.org\/schema\/dynamic_types.html<\/p>\n<h2>\u4f7f\u7528&#8221;visible?<\/h2>\n<p>\u53ef\u89c1\u6027\uff1f\u7531\u4e8e visible \u53ef\u4ee5\u63a5\u6536\u4e0a\u4e0b\u6587\uff0c\u56e0\u6b64\u53ef\u4ee5\u901a\u8fc7\u4e0e\u7528\u6237\u76f8\u5173\u8054\u7684\u5c5e\u6027\u6765\u5224\u65ad\u662f\u5426\u53ef\u89c1\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Types::UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n  <span class=\"n\">field<\/span> <span class=\"ss\">:name<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n\r\n\t<span class=\"k\">def<\/span> <span class=\"nc\">self<\/span><span class=\"o\">.<\/span><span class=\"nf\">visible?<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"p\">)<\/span>\r\n\t  <span class=\"n\">context<\/span><span class=\"p\">[<\/span><span class=\"ss\">:current_user<\/span><span class=\"p\">]<\/span><span class=\"o\">&amp;<\/span><span class=\"p\">.<\/span><span class=\"nf\">staff?<\/span>\r\n\t<span class=\"k\">end<\/span>\r\n\r\n\t<span class=\"k\">def<\/span> <span class=\"nf\">name<\/span>\r\n    <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u60a8\u60f3\u81ea\u5b9a\u4e49\u5b57\u6bb5\u7684\u53ef\u89c1\u6027\uff0c\u8bf7\u6309\u4ee5\u4e0b\u65b9\u5f0f\u64cd\u4f5c\u3002<\/p>\n<p>\u9996\u5148\uff0c\u5728BaseField\u7c7b\u4e2d\u521b\u5efa\u4e00\u4e2a\u540d\u4e3avisible?\u7684\u5b9e\u4f8b\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">module<\/span> <span class=\"nn\">Types<\/span>\r\n  <span class=\"k\">class<\/span> <span class=\"nc\">BaseField<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Field<\/span>\r\n    <span class=\"nb\">attr_reader<\/span> <span class=\"ss\">:visible_user<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">initialize<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">args<\/span><span class=\"p\">,<\/span> <span class=\"ss\">visible_user: <\/span><span class=\"s1\">''<\/span><span class=\"p\">,<\/span> <span class=\"o\">**<\/span><span class=\"n\">kwargs<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">block<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"k\">super<\/span><span class=\"p\">(<\/span><span class=\"o\">*<\/span><span class=\"n\">args<\/span><span class=\"p\">,<\/span> <span class=\"o\">**<\/span><span class=\"n\">kwargs<\/span><span class=\"p\">,<\/span> <span class=\"o\">&amp;<\/span><span class=\"n\">block<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"vi\">@visible_user<\/span> <span class=\"o\">=<\/span> <span class=\"n\">visible_user<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  \r\n    <span class=\"k\">def<\/span> <span class=\"nf\">visible?<\/span><span class=\"p\">(<\/span><span class=\"n\">context<\/span><span class=\"p\">)<\/span>\r\n      <span class=\"k\">super<\/span> <span class=\"o\">&amp;&amp;<\/span> <span class=\"k\">case<\/span> <span class=\"n\">visible_user<\/span>\r\n      <span class=\"k\">when<\/span> <span class=\"s1\">'staff'<\/span>\r\n        <span class=\"n\">context<\/span><span class=\"p\">[<\/span><span class=\"ss\">:current_user<\/span><span class=\"p\">]<\/span><span class=\"o\">&amp;<\/span><span class=\"p\">.<\/span><span class=\"nf\">staff?<\/span>\r\n      <span class=\"k\">when<\/span> <span class=\"s1\">'admin'<\/span>\r\n        <span class=\"n\">context<\/span><span class=\"p\">[<\/span><span class=\"ss\">:current_user<\/span><span class=\"p\">]<\/span><span class=\"o\">&amp;<\/span><span class=\"p\">.<\/span><span class=\"nf\">admin?<\/span>\r\n      <span class=\"k\">else<\/span>\r\n        <span class=\"kp\">true<\/span>\r\n      <span class=\"k\">end<\/span>\r\n    <span class=\"k\">end<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u901a\u8fc7\u5c06visible_user\u6dfb\u52a0\u5230\u9009\u9879\u5b57\u6bb5\u4e2d\uff0c\u53ef\u4ee5\u5c06\u4ec5\u9650\u4e8e\u5458\u5de5\u5c5e\u6027\u7684\u7528\u6237\u624d\u80fd\u67e5\u770b\u7684\u5b57\u6bb5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Types::UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n\t<span class=\"c1\"># option: visible_user\u3092\u8ffd\u52a0<\/span>\r\n  <span class=\"n\">field<\/span> <span class=\"ss\">:name<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span><span class=\"p\">,<\/span> <span class=\"ss\">visible_user: <\/span><span class=\"s1\">'staff'<\/span>\r\n\r\n\t<span class=\"k\">def<\/span> <span class=\"nf\">name<\/span>\r\n    <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<h2>\u4f7f\u7528\u6307\u4ee4\u3002<\/h2>\n<p>\u53ef\u4ee5\u4f7f\u7528GraphQL::Schema::Directive::Flagged\uff0c\u4f7fSDL\u4e2d\u8f6c\u6362\u65f6\u53ef\u4ee5\u9644\u52a0@flagged\u3002<\/p>\n<p>\u53c2\u8003\u94fe\u63a5\uff1ahttps:\/\/graphql-ruby.org\/type_definitions\/directives<\/p>\n<p>\u8bf7\u5c06\u4ee5\u4e0b\u5185\u5bb9\u7528\u4e2d\u6587\u8fdb\u884c\u540c\u4e49\u8f6c\u8ff0\uff1a<\/p>\n<p>(GraphQL\u6307\u4ee4\u662f\u4e00\u79cd\u53ef\u4ee5\u5728GraphQL\u67e5\u8be2\u8bed\u8a00\u4e2d\u88ab\u5e94\u7528\u7684\u7279\u6b8a\u6784\u9020\u3002\u8fd9\u4e9b\u6307\u4ee4\u53ef\u4ee5\u7528\u4e8e\u4fee\u6539\u67e5\u8be2\u7684\u884c\u4e3a\u6216\u8005\u5bf9\u67e5\u8be2\u7ed3\u679c\u6267\u884c\u7279\u5b9a\u64cd\u4f5c\u3002GraphQL-Ruby\u5e93\u63d0\u4f9b\u4e86\u4e00\u7ec4\u5185\u7f6e\u6307\u4ee4\uff0c\u5e76\u4e14\u8fd8\u652f\u6301\u81ea\u5b9a\u4e49\u6307\u4ee4\u7684\u6dfb\u52a0\u3002\u6307\u4ee4\u53ef\u4ee5\u5e94\u7528\u5728\u67e5\u8be2\u5b57\u6bb5\u3001\u67e5\u8be2\u53c2\u6570\u4ee5\u53ca\u5bf9\u8c61\u7c7b\u578b\u7b49\u4f4d\u7f6e\u3002\u901a\u8fc7\u4f7f\u7528\u6307\u4ee4\uff0c\u6211\u4eec\u53ef\u4ee5\u5728GraphQL\u4e2d\u5b9e\u73b0\u66f4\u52a0\u7075\u6d3b\u548c\u529f\u80fd\u5f3a\u5927\u7684\u67e5\u8be2\u65b9\u5f0f\u3002)<\/p>\n<p>\u9996\u5148\u4ece\u81ea\u5b9a\u4e49type\u7684\u53ef\u89c1\u6027\u7684\u65b9\u6cd5\u5f00\u59cb\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Types::UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n  <span class=\"n\">field<\/span> <span class=\"ss\">:name<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span>\r\n\r\n\t<span class=\"c1\"># directive\u306e\u6307\u5b9a<\/span>\r\n\t<span class=\"n\">directive<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Directive<\/span><span class=\"o\">::<\/span><span class=\"no\">Flagged<\/span><span class=\"p\">,<\/span> <span class=\"ss\">by: <\/span><span class=\"s1\">'staff'<\/span>\r\n\r\n\t<span class=\"k\">def<\/span> <span class=\"nf\">name<\/span>\r\n    <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u4f7f\u7528\u8fd9\u4e2adirective\u65f6\uff0c\u9700\u8981\u5728context\u4e2d\u6dfb\u52a0\u4e00\u4e2aflags\u6570\u7ec4\u3002<\/p>\n<p>\u8fd9\u91cc\u6839\u636e&#8221;by&#8221;\u6307\u5b9a\u7684\u503c\uff0c\u5982\u679c\u5b58\u5728\u5219\u53ef\u67e5\u770b\uff0c\u4e0d\u5b58\u5728\u5219\u4e0d\u53ef\u67e5\u770b\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">GraphqlController<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">ApplicationController<\/span>\r\n  <span class=\"k\">def<\/span> <span class=\"nf\">execute<\/span>\r\n    <span class=\"n\">variables<\/span> <span class=\"o\">=<\/span> <span class=\"n\">prepare_variables<\/span><span class=\"p\">(<\/span><span class=\"n\">params<\/span><span class=\"p\">[<\/span><span class=\"ss\">:variables<\/span><span class=\"p\">])<\/span>\r\n    <span class=\"n\">query<\/span> <span class=\"o\">=<\/span> <span class=\"n\">params<\/span><span class=\"p\">[<\/span><span class=\"ss\">:query<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">operation_name<\/span> <span class=\"o\">=<\/span> <span class=\"n\">params<\/span><span class=\"p\">[<\/span><span class=\"ss\">:operationName<\/span><span class=\"p\">]<\/span>\r\n    <span class=\"n\">context<\/span> <span class=\"o\">=<\/span> <span class=\"p\">{<\/span>\r\n      <span class=\"ss\">current_user: <\/span><span class=\"n\">current_user<\/span><span class=\"p\">,<\/span>\r\n      <span class=\"ss\">flags: <\/span><span class=\"n\">current_user<\/span><span class=\"o\">&amp;<\/span><span class=\"p\">.<\/span><span class=\"nf\">roles<\/span> <span class=\"c1\">#=&gt;['staff']<\/span>\r\n    <span class=\"p\">}<\/span>\r\n    <span class=\"n\">result<\/span> <span class=\"o\">=<\/span> <span class=\"no\">GraphqlTestSchema<\/span><span class=\"p\">.<\/span><span class=\"nf\">execute<\/span><span class=\"p\">(<\/span><span class=\"n\">query<\/span><span class=\"p\">,<\/span> <span class=\"ss\">variables: <\/span><span class=\"n\">variables<\/span><span class=\"p\">,<\/span> <span class=\"ss\">context: <\/span><span class=\"n\">context<\/span><span class=\"p\">,<\/span> <span class=\"ss\">operation_name: <\/span><span class=\"n\">operation_name<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">(<\/span><span class=\"err\">\u4ee5\u4e0b\u4e2d\u7565<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u8ba9\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528SDL\u5427\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">\u276f<\/span> <span class=\"n\">rails<\/span> <span class=\"n\">c<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">printer<\/span> <span class=\"o\">=<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"no\">GraphqlTestSchema<\/span><span class=\"p\">,<\/span> <span class=\"ss\">context: <\/span><span class=\"p\">{<\/span><span class=\"ss\">flags: <\/span><span class=\"p\">[<\/span><span class=\"s1\">'staff'<\/span><span class=\"p\">]})<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"nb\">puts<\/span> <span class=\"n\">printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">print_schema<\/span>\r\n<span class=\"s2\">\"\"\"\r\nHides this part of the schema unless the named flag is present in context[:flags]\r\n\"\"\"<\/span>                                                                      \r\n<span class=\"n\">directive<\/span> <span class=\"vi\">@flagged<\/span><span class=\"p\">(<\/span>                                                      \r\n  <span class=\"s2\">\"\"\"                                                                    \r\n  Flags to check for this schema member                                  \r\n  \"\"\"<\/span>                                                                    \r\n  <span class=\"ss\">by: <\/span><span class=\"p\">[<\/span><span class=\"no\">String<\/span><span class=\"o\">!<\/span><span class=\"p\">]<\/span><span class=\"o\">!<\/span>                                                         \r\n<span class=\"p\">)<\/span> <span class=\"n\">on<\/span> <span class=\"no\">ARGUMENT_DEFINITION<\/span> <span class=\"o\">|<\/span> <span class=\"no\">ENUM<\/span> <span class=\"o\">|<\/span> <span class=\"no\">ENUM_VALUE<\/span> <span class=\"o\">|<\/span> <span class=\"no\">FIELD_DEFINITION<\/span> <span class=\"o\">|<\/span> <span class=\"no\">INPUT_FIELD_DEFINITION<\/span> <span class=\"o\">|<\/span> <span class=\"no\">INPUT_OBJECT<\/span> <span class=\"o\">|<\/span> <span class=\"no\">INTERFACE<\/span> <span class=\"o\">|<\/span> <span class=\"no\">OBJECT<\/span> <span class=\"o\">|<\/span> <span class=\"no\">SCALAR<\/span> <span class=\"o\">|<\/span> <span class=\"no\">UNION<\/span>\r\n                                                                         \r\n<span class=\"p\">(<\/span><span class=\"err\">\u4e2d\u7565<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">type<\/span> <span class=\"no\">User<\/span> <span class=\"vi\">@flagged<\/span><span class=\"p\">(<\/span><span class=\"ss\">by: <\/span><span class=\"p\">[<\/span><span class=\"s2\">\"staff\"<\/span><span class=\"p\">])<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"ss\">name: <\/span><span class=\"no\">String<\/span><span class=\"o\">!<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u7531\u4e8e\u5728User\u7c7b\u578b\u4e2d\u6dfb\u52a0\u4e86@flagged\uff0c\u56e0\u6b64\u5ba2\u6237\u7aef\u4e5f\u66f4\u5bb9\u6613\u7406\u89e3\uff01<\/p>\n<p>\u5728\u81ea\u5b9a\u4e49field\u7684\u53ef\u89c1\u6027\u65b9\u9762\uff0c\u65b9\u6cd5\u5927\u4f53\u4e0a\u4e5f\u662f\u76f8\u540c\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"k\">class<\/span> <span class=\"nc\">Types::UserType<\/span> <span class=\"o\">&lt;<\/span> <span class=\"no\">Types<\/span><span class=\"o\">::<\/span><span class=\"no\">BaseObject<\/span>\r\n  <span class=\"n\">field<\/span> <span class=\"ss\">:name<\/span><span class=\"p\">,<\/span> <span class=\"no\">String<\/span><span class=\"p\">,<\/span> <span class=\"ss\">null: <\/span><span class=\"kp\">false<\/span><span class=\"p\">,<\/span> <span class=\"ss\">directives: <\/span><span class=\"p\">{<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Directive<\/span><span class=\"o\">::<\/span><span class=\"no\">Flagged<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"p\">{<\/span> <span class=\"ss\">by: <\/span><span class=\"s1\">'staff'<\/span><span class=\"p\">}<\/span> <span class=\"p\">}<\/span>\r\n\r\n\t<span class=\"k\">def<\/span> <span class=\"nf\">name<\/span>\r\n    <span class=\"n\">object<\/span><span class=\"p\">.<\/span><span class=\"nf\">name<\/span>\r\n  <span class=\"k\">end<\/span>\r\n<span class=\"k\">end<\/span>\r\n<\/code><\/pre>\n<p>\u53ea\u9700\u5c06directives\u6307\u5b9a\u4e3afield\uff0c\u5176\u4ed6\u90e8\u5206\u4e0etype\u76f8\u540c\u5bf9\u5427\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">\u276f<\/span> <span class=\"n\">rails<\/span> <span class=\"n\">c<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">printer<\/span> <span class=\"o\">=<\/span> <span class=\"no\">GraphQL<\/span><span class=\"o\">::<\/span><span class=\"no\">Schema<\/span><span class=\"o\">::<\/span><span class=\"no\">Printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">new<\/span><span class=\"p\">(<\/span><span class=\"no\">GraphqlTestSchema<\/span><span class=\"p\">,<\/span> <span class=\"ss\">context: <\/span><span class=\"p\">{<\/span><span class=\"ss\">flags: <\/span><span class=\"p\">[<\/span><span class=\"s1\">'staff'<\/span><span class=\"p\">]})<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"nb\">puts<\/span> <span class=\"n\">printer<\/span><span class=\"p\">.<\/span><span class=\"nf\">print_schema<\/span>\r\n<span class=\"s2\">\"\"\"\r\nHides this part of the schema unless the named flag is present in context[:flags]\r\n\"\"\"<\/span>                                                                      \r\n<span class=\"n\">directive<\/span> <span class=\"vi\">@flagged<\/span><span class=\"p\">(<\/span>                                                      \r\n  <span class=\"s2\">\"\"\"                                                                    \r\n  Flags to check for this schema member                                  \r\n  \"\"\"<\/span>                                                                    \r\n  <span class=\"ss\">by: <\/span><span class=\"p\">[<\/span><span class=\"no\">String<\/span><span class=\"o\">!<\/span><span class=\"p\">]<\/span><span class=\"o\">!<\/span>                                                         \r\n<span class=\"p\">)<\/span> <span class=\"n\">on<\/span> <span class=\"no\">ARGUMENT_DEFINITION<\/span> <span class=\"o\">|<\/span> <span class=\"no\">ENUM<\/span> <span class=\"o\">|<\/span> <span class=\"no\">ENUM_VALUE<\/span> <span class=\"o\">|<\/span> <span class=\"no\">FIELD_DEFINITION<\/span> <span class=\"o\">|<\/span> <span class=\"no\">INPUT_FIELD_DEFINITION<\/span> <span class=\"o\">|<\/span> <span class=\"no\">INPUT_OBJECT<\/span> <span class=\"o\">|<\/span> <span class=\"no\">INTERFACE<\/span> <span class=\"o\">|<\/span> <span class=\"no\">OBJECT<\/span> <span class=\"o\">|<\/span> <span class=\"no\">SCALAR<\/span> <span class=\"o\">|<\/span> <span class=\"no\">UNION<\/span>\r\n                                                                         \r\n<span class=\"p\">(<\/span><span class=\"err\">\u4e2d\u7565<\/span><span class=\"p\">)<\/span>\r\n\r\n<span class=\"n\">type<\/span> <span class=\"no\">User<\/span> <span class=\"p\">{<\/span>\r\n\t<span class=\"ss\">name: <\/span><span class=\"no\">String<\/span><span class=\"o\">!<\/span> <span class=\"vi\">@flagged<\/span><span class=\"p\">(<\/span><span class=\"ss\">by: <\/span><span class=\"p\">[<\/span><span class=\"s2\">\"staff\"<\/span><span class=\"p\">])<\/span>\r\n<span class=\"p\">}<\/span>\r\n<\/code><\/pre>\n<p>\u8fd9\u6b21\u7ed9\u540d\u4e3a&#8221;field&#8221;\u7684\u9886\u57df\u52a0\u4e0a\u4e86&#8221;flagged&#8221;\u7684\u6807\u8bb0\u3002<\/p>\n<h1>\u603b\u7ed3<\/h1>\n<p>\u8fd9\u6b21\u6211\u5c1d\u8bd5\u5199\u4e86\u4e00\u4e9b\u5173\u4e8e\u5982\u4f55\u4f7f\u7528graphql-ruby\u5904\u7406visible\u7684\u4e0d\u540c\u65b9\u6cd5\u3002<\/p>\n<p>\u5c31\u6211\u4e2a\u4eba\u800c\u8a00\uff0c\u6211\u89c9\u5f97\u4f7f\u7528directive\u7684\u65b9\u6cd5\u5728type\u548cfield\u4e0a\u662f\u4e00\u81f4\u7684\uff0c\u800c\u4e14\u6307\u5b9a\u7684\u65b9\u6cd5\u4e5f\u5f88\u7b80\u5355\uff0c\u770b\u8d77\u6765\u5f88\u4e0d\u9519\uff01<\/p>\n<p>\u8bf7\u4e00\u5b9a\u5c1d\u8bd5\u4f7f\u7528\u8fd9\u4e2a\u529f\u80fd\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u6839\u636e\u7528\u6237\u5728\u4e0a\u4e0b\u6587\u4e2d\u7684\u4fe1\u606f\u7075\u6d3b\u5b9a\u5236\u53ef\u89c1\u6027\uff0c\u5e76\u4e14\u5728\u5b89\u5168\u65b9\u9762\u8868\u73b0\u51fa\u8272\u3002<\/p>\n<h1>\u8bf7\u67e5\u9605\u76f8\u5173\u8d44\u6599\u3002<\/h1>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/graphql-ruby.org\/schema\/dynamic_types.html<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/graphql-ruby.org\/type_definitions\/directives.html#schema-directives<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">https:\/\/graphql-ruby.org\/authorization\/visibility.html<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">https:\/\/graphql-ruby.org\/api-doc\/2.0.2\/GraphQL\/Schema\/Directive\/Flagged.html<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>&#8220;Visibility&#8221; \u7684\u610f\u601d\u662f\u4ec0\u4e48\uff1f (Visibility de yisi sh [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-47810","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5c1d\u8bd5\u4f7f\u7528graphql-ruby\u4e2d\u7684&quot;visibility&quot;\u529f\u80fd - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u5c1d\u8bd5\u4f7f\u7528graphql-ruby\u4e2d\u7684visibility\u529f\u80fd\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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