{"id":29988,"date":"2023-01-30T10:26:15","date_gmt":"2024-02-27T14:32:39","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%bb%a1%e8%b6%b3mongoid%e6%90%9c%e7%b4%a2%e6%9d%a1%e4%bb%b6%e7%9a%84%e6%81%b0%e5%88%b0%e5%a5%bd%e5%a4%84%e7%9a%84%e5%b7%a5%e5%85%b7\/"},"modified":"2025-08-12T16:55:38","modified_gmt":"2025-08-12T08:55:38","slug":"%e6%bb%a1%e8%b6%b3mongoid%e6%90%9c%e7%b4%a2%e6%9d%a1%e4%bb%b6%e7%9a%84%e6%81%b0%e5%88%b0%e5%a5%bd%e5%a4%84%e7%9a%84%e5%b7%a5%e5%85%b7","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e6%bb%a1%e8%b6%b3mongoid%e6%90%9c%e7%b4%a2%e6%9d%a1%e4%bb%b6%e7%9a%84%e6%81%b0%e5%88%b0%e5%a5%bd%e5%a4%84%e7%9a%84%e5%b7%a5%e5%85%b7\/","title":{"rendered":"\u6ee1\u8db3Mongoid\u641c\u7d22\u6761\u4ef6\u7684\u6070\u5230\u597d\u5904\u7684\u5de5\u5177"},"content":{"rendered":"<h2>\u9996\u5148<\/h2>\n<p>\u672c\u6587\u7684\u76ee\u7684\u662f\u89e3\u51b3\u5982\u4f55\u5728mongoid\u4e2d\u4f7f\u7528\u8fd9\u6837\u7684\u641c\u7d22\u6761\u4ef6\u8fdb\u884c\u641c\u7d22\u7684\u95ee\u9898\uff0c\u89e6\u53ca\u5230\u5176\u4ed6mongoid\u6587\u7ae0\u4e2d\u6ca1\u6709\u6d89\u53ca\u7684\u90e8\u5206\uff0c\u4ee5\u6ee1\u8db3\u8bfb\u8005\u7684\u9700\u6c42\u3002\u867d\u7136\u793a\u4f8b\u76ee\u524d\u8fd8\u5f88\u5c11\uff0c\u4f46\u9884\u8ba1\u4f1a\u9010\u6b65\u66f4\u65b0\u3002\u5e0c\u671b\u80fd\u5bf9\u4f7f\u7528Ruby\u7684\u4eba\u4eec\u5728MongoDB\u65b9\u9762\u63d0\u4f9b\u5e2e\u52a9\u3002<\/p>\n<h2>\u76ee\u5f55<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u305d\u306e1\uff1a\u4ef6\u6570\u3092\u6307\u5b9a\u3057\u3066\u53d6\u5f97\u3057\u305f\u3044\u5834\u5408<\/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\">\u305d\u306e2\uff1a\u7279\u5b9a\u306e\u6761\u4ef6\u3092\u542b\u3081\u306a\u3044\u7d50\u679c\u304c\u6b32\u3057\u3044\u5834\u5408<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u305d\u306e3\uff1a\u7279\u5b9a\u306e\u30e2\u30c7\u30eb\u3068\u30a2\u30bd\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u3092\u7d44\u3093\u3067\u3044\u308b\u30e2\u30c7\u30eb\u304c\u30c7\u30fc\u30bf\u3068\u3057\u3066\u5b58\u5728\u3059\u308b\u304b\u3092\u5224\u5b9a\u3057\u305f\u3044\u5834\u5408<\/ul>\n<h2>\u8bf7\u786e\u8ba4\u4e00\u4e0b\u57fa\u672c\u4e8b\u9879\u3002<\/h2>\n<p>Mongoid\u662f\u4e00\u4e2a\u7c7b\u4f3c\u4e8eRails\u4e2d\u7684ActiveRecord\u7684gem\uff0c\u5728\u5904\u7406MongoDB\u65f6\u63d0\u4f9b\u4e86\u76f8\u4f3c\u7684\u4f53\u9a8c\u3002<\/p>\n<h2>\u6267\u884c\u73af\u5883<\/h2>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">MongoDB\u306e\u30d0\u30fc\u30b8\u30e7\u30f3 \uff1a 3.2.11<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">mongoid\u306e\u30d0\u30fc\u30b8\u30e7\u30f3 : 4.0<\/ul>\n<h4>\u8bf7\u4e8b\u5148\u4f7f\u7528brew\u547d\u4ee4\u5b89\u88c5MongoDB\u3002<\/h4>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u7279\u306b\u4f55\u3082\u6307\u5b9a\u305b\u305a\u306b brew install mongodb \u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3068\u6700\u65b0\u7248\u306b\u306a\u308b\u305f\u3081\u3001\u4eca\u56de\u306e\u8a18\u4e8b\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u6307\u5b9a\u3059\u308b\u5834\u5408\u306f\u3001 brew install mongodb@3.2 \u3068\u3044\u3046\u5f62\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u3053\u3068<\/ul>\n<\/li>\n<\/ul>\n<p>\u4eca\u56de\u306e\u5834\u5408\u306f\u3001\u7279\u306b\u6307\u5b9a\u3057\u306a\u3044\u3067\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3082\u554f\u984c\u306a\u3044( version 3.4.9 \u6642\u70b9\u3067\u306f\u52d5\u4f5c\u691c\u8a3c\u6e08\u307f)<\/p>\n<pre class=\"post-pre\"><code><span class=\"err\">$<\/span> <span class=\"n\">brew<\/span> <span class=\"n\">install<\/span> <span class=\"n\">mongodb<\/span>\r\n<\/code><\/pre>\n<h1>\u641c\u7d22\u6761\u4ef6\u7684\u5404\u79cd\u8bbe\u7f6e<\/h1>\n<h2>\u5982\u679c\u8981\u6307\u5b9a\u6570\u91cf\u8fdb\u884c\u83b7\u53d6\u3002<\/h2>\n<ul class=\"post-ul\">\u4f8b\u3048\u3070\u3001\u30d2\u30c3\u30c8\u3059\u308b\u6761\u4ef6\u306e\u3046\u306120\u4ef6\u3060\u3051\u3092\u53d6\u5f97\u3057\u3066\u307f\u308b<\/ul>\n<h4>\u4f7f\u7528limit\u51fd\u6570\uff08\u6574\u6570\uff09<\/h4>\n<pre class=\"post-pre\"><code><span class=\"c1\"># Rails console\u306b\u3066\u5b9f\u65bd<\/span>\r\n\r\n<span class=\"c1\"># User\u306e\u4f5c\u6210\u65e5\u306e\u964d\u9806\u306720\u4ef6\u3092\u53d6\u5f97<\/span>\r\n<span class=\"c1\"># \u3061\u306a\u307f\u306b\u672b\u5c3e\u306e.to_a\u306fmongoid\u306e\u30af\u30a8\u30ea\u3092\u767a\u884c\u3059\u308b\u305f\u3081\u306e\u30e1\u30bd\u30c3\u30c9<\/span>\r\n<span class=\"c1\"># .to_a\u3068\u540c\u69d8\u306b.first\u3084.last\u3067\u3082\u30af\u30a8\u30ea\u304c\u767a\u884c\u3055\u308c\u308b<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">users<\/span> <span class=\"o\">=<\/span> <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">order_by<\/span><span class=\"p\">(<\/span><span class=\"ss\">:created_at<\/span> <span class=\"o\">=&gt;<\/span> <span class=\"s2\">\"desc\"<\/span><span class=\"p\">).<\/span><span class=\"nf\">limit<\/span><span class=\"p\">(<\/span><span class=\"mi\">20<\/span><span class=\"p\">).<\/span><span class=\"nf\">to_a<\/span>\r\n<span class=\"o\">=&gt;<\/span> <span class=\"p\">[<\/span><span class=\"c1\">#&lt;User _id: \u30e6\u30fc\u30b6\u30fcID,\u3000created_at: \u65e5\u4ed8, updated_at: \u65e5\u4ed8]<\/span>\r\n<span class=\"c1\"># 20\u4ef6\u304c\u53d6\u5f97\u51fa\u6765\u3066\u3044\u308b\u4e8b\u3092\u78ba\u8a8d<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">users<\/span><span class=\"p\">.<\/span><span class=\"nf\">count<\/span>\r\n<span class=\"o\">=&gt;<\/span> <span class=\"mi\">20<\/span>\r\n\r\n<\/code><\/pre>\n<ul class=\"post-ul\">ActiveRecord\u306e\u3088\u3046\u306b User.last(20) \u306e\u3088\u3046\u306b\u6700\u5f8c\u306e20\u4ef6\u3092\u53d6\u5f97\u307f\u305f\u3044\u306a\u3053\u3068\u306f\u51fa\u6765\u306a\u3044\u306e\u3067\u6ce8\u610f<\/ul>\n<pre class=\"post-pre\"><code><span class=\"c1\"># \u30a8\u30e9\u30fc\u306b\u306a\u308b<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">last<\/span><span class=\"p\">(<\/span><span class=\"mi\">20<\/span><span class=\"p\">)<\/span>\r\n<span class=\"no\">ArgumentError<\/span><span class=\"p\">:<\/span> <span class=\"n\">wrong<\/span> <span class=\"n\">number<\/span> <span class=\"n\">of<\/span> <span class=\"n\">arguments<\/span> <span class=\"p\">(<\/span><span class=\"n\">given<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"n\">expected<\/span> <span class=\"mi\">0<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h2>\u5982\u679c\u9700\u8981\u4e00\u4e2a\u4e0d\u5305\u542b\u7279\u5b9a\u6761\u4ef6\u7684\u7ed3\u679c\u7684\u8bdd<\/h2>\n<ul class=\"post-ul\">\u4f8b\u3048\u3070\u3001hoge\u3068\u3044\u3046\u540d\u524d\u3058\u3083\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u3092\u8907\u6570\u4ef6\u53d6\u5f97\u3057\u305f\u3044<\/ul>\n<h4>\u4f7f\u7528ModelName.nin(\u641c\u7d22\u6761\u4ef6)\u3002<\/h4>\n<pre class=\"post-pre\"><code><span class=\"c1\"># Rails console\u306b\u3066\u5b9f\u65bd<\/span>\r\n\r\n<span class=\"c1\"># nin \u306f not in\u306e\u610f\u5473<\/span>\r\n<span class=\"o\">&gt;<\/span> <span class=\"n\">users<\/span> <span class=\"o\">=<\/span> <span class=\"no\">User<\/span><span class=\"p\">.<\/span><span class=\"nf\">nin<\/span><span class=\"p\">(<\/span><span class=\"ss\">name: <\/span><span class=\"s2\">\"hoge\"<\/span><span class=\"p\">).<\/span><span class=\"nf\">limit<\/span><span class=\"p\">(<\/span><span class=\"mi\">20<\/span><span class=\"p\">).<\/span><span class=\"nf\">to_a<\/span>\r\n<span class=\"o\">=&gt;<\/span> <span class=\"p\">[<\/span><span class=\"c1\">#&lt;User _id: \u30e6\u30fc\u30b6\u30fcID,\u3000created_at: \u65e5\u4ed8, updated_at: \u65e5\u4ed8]<\/span>\r\n<\/code><\/pre>\n<h2>\u5982\u679c\u60f3\u8981\u5224\u65ad\u662f\u5426\u5b58\u5728\u4e0e\u7279\u5b9a\u6a21\u578b\u548c\u5173\u8054\u7684\u6a21\u578b\u4f5c\u4e3a\u6570\u636e\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/h2>\n<h4>\u4f7f\u7528\u4e86\u54ea\u4e2a\u6a21\u578b\uff1f<\/h4>\n<ul class=\"post-ul\">\u4f8b1\uff09user\u30e2\u30c7\u30eb\u304chas_many\u3067blog\u30e2\u30c7\u30eb\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408(has_\u8907\u6570\u5f62?)<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">user<\/span><span class=\"p\">.<\/span><span class=\"nf\">has_blogs?<\/span>\r\n<span class=\"o\">=&gt;<\/span> <span class=\"kp\">true<\/span>\r\n<\/code><\/pre>\n<ul class=\"post-ul\">\u4f8b2\uff09hoge\u30e2\u30c7\u30eb\u304chas_one\u3067fuga\u30e2\u30c7\u30eb\u3092\u6301\u3063\u3066\u3044\u308b\u5834\u5408(has_\u5358\u6570\u5f62?)<\/ul>\n<pre class=\"post-pre\"><code><span class=\"n\">hoge<\/span><span class=\"p\">.<\/span><span class=\"nf\">has_fuga?<\/span>\r\n<span class=\"o\">=&gt;<\/span> <span class=\"kp\">true<\/span>\r\n<\/code><\/pre>\n<h2>\u603b\u7ed3<\/h2>\n<p>\u6211\u89c9\u5f97\u5173\u4e8emongoid\u7684\u641c\u7d22\u6761\u4ef6\u7b49\u5185\u5bb9\u7684\u6587\u7ae0\u5f88\u5c11\uff0c\u6240\u4ee5\u6211\u53d1\u8868\u4e86\u8fd9\u7bc7\u5e16\u5b50\u3002\u501f\u6b64\u673a\u4f1a\uff0c\u5982\u679c\u60a8\u8fd8\u6ca1\u6709\u4f7f\u7528\u8fc7mongoid\uff0c\u4e0d\u59a8\u8bd5\u8bd5\u770b\u3002\u53e6\u5916\uff0c\u5982\u679c\u6709\u4efb\u4f55\u758f\u6f0f\u4e4b\u5904\uff0c\u8bf7\u60a8\u6307\u51fa\uff0c\u6211\u5c06\u4e0d\u80dc\u611f\u6fc0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u9996\u5148 \u672c\u6587\u7684\u76ee\u7684\u662f\u89e3\u51b3\u5982\u4f55\u5728mongoid\u4e2d\u4f7f\u7528\u8fd9\u6837\u7684\u641c\u7d22\u6761\u4ef6\u8fdb\u884c\u641c\u7d22\u7684\u95ee\u9898\uff0c\u89e6\u53ca\u5230\u5176\u4ed6mongoid\u6587\u7ae0\u4e2d\u6ca1 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-29988","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"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>\u6ee1\u8db3Mongoid\u641c\u7d22\u6761\u4ef6\u7684\u6070\u5230\u597d\u5904\u7684\u5de5\u5177 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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