{"id":30009,"date":"2023-10-05T21:17:46","date_gmt":"2023-12-04T05:16:56","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8mongoengine%e6%8e%a2%e7%b4%a2mongodb%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86\/"},"modified":"2025-08-12T17:02:32","modified_gmt":"2025-08-12T09:02:32","slug":"%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8mongoengine%e6%8e%a2%e7%b4%a2mongodb%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e5%b0%9d%e8%af%95%e4%bd%bf%e7%94%a8mongoengine%e6%8e%a2%e7%b4%a2mongodb%e5%9f%ba%e7%a1%80%e7%9f%a5%e8%af%86\/","title":{"rendered":"\u5c1d\u8bd5\u4f7f\u7528MongoEngine\u63a2\u7d22MongoDB\u57fa\u7840\u77e5\u8bc6"},"content":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u300aMongoDB Advent Calendar 2013\u300b\u7684\u7b2c\u4e09\u5929\u3002<\/p>\n<h1>MongoEngine\u662f\u4ec0\u4e48\uff1fMongoEngine \u662f\u4e00\u79cd ODM\uff08\u5bf9\u8c61\u6587\u6863\u6620\u5c04\u5668\uff09\uff0c\u5b83\u662f\u4e3a\u4e86\u65b9\u4fbf\u5730\u4ee5\u7c7b\u4f3c\u5bf9\u8c61\u7684\u65b9\u5f0f\u64cd\u4f5cMongoDB\u6587\u6863\u800c\u8bbe\u8ba1\u7684\u5e93\u3002\u5b83\u53ef\u4ee5\u62bd\u8c61\u5316\u6587\u6863\u7684\u6a21\u5f0f\u5b9a\u4e49\u3001\u83b7\u53d6\u548c\u4fdd\u5b58\u529f\u80fd\u3002<\/p>\n<p>\u5229\u7528\u65b9\u6cd5\u4e0eDjango\u7684ORM\u975e\u5e38\u76f8\u4f3c\uff0c\u5982\u679c\u4f60\u662fDjango\u7528\u6237\uff0c\u5373\u4f7f\u4e0d\u5b66\u4e60MongoDB\u7279\u6709\u7684\u67e5\u8be2\u8bed\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528MongoDB\u3002\u53ef\u80fd\u7684\u8bdd\u3002<\/p>\n<p>\u7136\u800c\uff0c\u5982\u679c\u60f3\u8981\u6df1\u5165\u4e86\u89e3\u5e76\u8fdb\u884c\u8fdb\u4e00\u6b65\u64cd\u4f5c\uff0c\u5c31\u9700\u8981\u5177\u5907\u5bf9MongoDB\u7684\u4e86\u89e3\u3002<\/p>\n<h1>\u5728MongoEngine\u4e2d\u53ef\u4ee5\u505a\u4ec0\u4e48\uff0c\u53c8\u6709\u54ea\u4e9b\u4e0d\u80fd\u505a\u7684\u4e8b\u60c5\uff1f<\/p>\n<h2>\u53ef\u4ee5\u505a\u7684\u4e8b\u60c5 zu\u00f2 de<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u30b9\u30ad\u30fc\u30de\u306e\u5b9a\u7fa9\u3001\u5236\u7d04\u306e\u5b9a\u7fa9<\/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\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u4fdd\u5b58<\/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\">\u30c9\u30ad\u30e5\u30e1\u30f3\u30c8\u306e\u53d6\u5f97<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">\u30ab\u30b9\u30bf\u30e0\u30af\u30a8\u30ea\u306e\u767a\u884c<\/ul>\n<h2>\u4e0d\u80fd\u505a\u7684\u4e8b\u60c5 or \u9ebb\u7169\u7684\u4e8b\u60c5<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\uff06\u30ea\u30b9\u30c8\u30a2\u306a\u3069\u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u306e\u30b3\u30de\u30f3\u30c9\u5b9f\u884c<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<ul class=\"post-ul\">MongoDB\u56fa\u6709\u306e\u30b3\u30de\u30f3\u30c9\u767a\u884c\uff08\u51fa\u6765\u306a\u304f\u3082\u7121\u3044\u3051\u3069\u3001\u3068\u3066\u3082\u9762\u5012\uff09<\/ul>\n<h1>\u8ba9\u6211\u4eec\u6765\u78b0\u4e00\u4e0b\u5427<\/p>\n<h2>\u5b89\u88c5\u56e0\u4e3a\u5df2\u7ecf\u5728PyPI\u4e0a\u6ce8\u518c\u4e86\uff0c\u6240\u4ee5\u53ef\u4ee5\u4f7f\u7528pip\u8fdb\u884c\u5b89\u88c5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">$ <\/span>pip <span class=\"nb\">install <\/span>mongoengine\r\n<\/code><\/pre>\n<h2>\u8fde\u63a5\u8bbe\u7f6e\u8fde\u63a5\u5230MongoDB\u65f6\uff0c\u8bf7\u4f7f\u7528mongoengine.connect\u3002\u8981\u8fde\u63a5\u5230\u540d\u4e3amongotest\u7684\u6570\u636e\u5e93\uff0c\u8bf7\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u64cd\u4f5c\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">mongoengine<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">connect<\/span>\r\n\r\n<span class=\"n\">connect<\/span><span class=\"p\">(<\/span><span class=\"s\">'mongotest'<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u9700\u8981\u6307\u5b9a\u4e3b\u673a\u6216\u7aef\u53e3\uff0c\u8bf7\u6dfb\u52a0\u53c2\u6570\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"n\">connect<\/span><span class=\"p\">(<\/span><span class=\"s\">'mongotest'<\/span><span class=\"p\">,<\/span> <span class=\"n\">host<\/span><span class=\"o\">=<\/span><span class=\"s\">'192.168.0.10'<\/span><span class=\"p\">,<\/span> <span class=\"n\">port<\/span><span class=\"o\">=<\/span><span class=\"mi\">999<\/span><span class=\"p\">)<\/span>\r\n<\/code><\/pre>\n<h2>\u521b\u5efa\u6587\u6863\u7c7b\u5b9a\u4e49\u4e00\u4e2a\u7ee7\u627f\u81eamongoengine.document.Document\u7c7b\u7684\u5b50\u7c7b\u3002\u6bcf\u4e2a\u5b57\u6bb5\u90fd\u5206\u914d\u4e86mongoengine.fields.*\u3002\u5b57\u6bb5\u7c7b\u7684\u547d\u540d\u7c7b\u4f3c\u4e8ePython\u5bf9\u8c61\u540d\uff0c\u4f8b\u5982IntField\u6216StringField\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">mongoengine.document<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Document<\/span>\r\n<span class=\"kn\">from<\/span> <span class=\"nn\">mongoengine<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">fields<\/span>\r\n\r\n<span class=\"k\">class<\/span> <span class=\"nc\">Athlete<\/span><span class=\"p\">(<\/span><span class=\"n\">Document<\/span><span class=\"p\">):<\/span>\r\n    <span class=\"n\">name<\/span> <span class=\"o\">=<\/span> <span class=\"n\">fields<\/span><span class=\"p\">.<\/span><span class=\"n\">StringField<\/span><span class=\"p\">()<\/span>\r\n    <span class=\"n\">age<\/span> <span class=\"o\">=<\/span> <span class=\"n\">fields<\/span><span class=\"p\">.<\/span><span class=\"n\">IntField<\/span><span class=\"p\">()<\/span>\r\n\r\n    <span class=\"k\">def<\/span> <span class=\"nf\">__unicode__<\/span><span class=\"p\">(<\/span><span class=\"bp\">self<\/span><span class=\"p\">):<\/span>\r\n        <span class=\"k\">return<\/span> <span class=\"bp\">self<\/span><span class=\"p\">.<\/span><span class=\"n\">name<\/span>\r\n<\/code><\/pre>\n<p>MongoDB\u7684\u4e00\u4e2a\u4f18\u70b9\u662f\u5b83\u662f\u65e0\u6a21\u5f0f\u7684\uff0c\u4f46\u4e2a\u4eba\u800c\u8a00\uff0c\u6211\u8ba4\u4e3a\u521b\u5efa\u6587\u6863\u7c7b==\u6a21\u5f0f\u5e76\u5bf9\u5176\u8fdb\u884c\u64cd\u4f5c\u66f4\u5bb9\u6613\u3002\u987a\u4fbf\u8bf4\u4e00\u4e0b\uff0c\u7531\u4e8e\u53ef\u4ee5\u5728\u4e00\u4e2a\u96c6\u5408\u4e2d\u64cd\u4f5c\u591a\u4e2a\u6587\u6863\u7c7b\uff0c\u56e0\u6b64\u65e0\u6a21\u5f0f\u7684\u4f18\u70b9\u5e76\u672a\u53d7\u5230\u7834\u574f\u3002<\/p>\n<h2>\u6dfb\u52a0\u6587\u6863\u5b9e\u4f8b\u5316Athlete\u7c7b\u5e76\u8c03\u7528save()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"kn\">from<\/span> <span class=\"nn\">documents<\/span> <span class=\"kn\">import<\/span> <span class=\"n\">Athlete<\/span>\r\n\r\n<span class=\"c1\"># taro yamada\u3068hanako yamada\u3092\u8ffd\u52a0\u3059\u308b\r\n<\/span><span class=\"n\">athlete<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"o\">=<\/span><span class=\"sa\">u<\/span><span class=\"s\">\"taro yamada\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">age<\/span><span class=\"o\">=<\/span><span class=\"mi\">30<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">save<\/span><span class=\"p\">()<\/span>\r\n<span class=\"n\">athlete<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"o\">=<\/span><span class=\"sa\">u<\/span><span class=\"s\">\"hanako yamada\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">age<\/span><span class=\"o\">=<\/span><span class=\"mi\">28<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">save<\/span><span class=\"p\">()<\/span>\r\n<\/code><\/pre>\n<p>\u5f53\u6211\u4f7f\u7528mongo\u547d\u4ee4\u8fdb\u884c\u67e5\u770b\u65f6\u2026\u2026<\/p>\n<pre class=\"post-pre\"><code>$ mongo mongotest\r\nMongoDB shell version: 2.4.6\r\nconnecting to: mongotest\r\n\r\n&gt; show dbs\r\nlocal   0.078125GB\r\nmongotest   0.203125GB\r\n<\/code><\/pre>\n<p>\u6570\u636e\u5e93\u5df2\u7ecf\u88ab\u81ea\u52a8\u521b\u5efa\u4e86\u3002\u81f3\u4e8e\u96c6\u5408\uff0c\u5219\u662f<\/p>\n<pre class=\"post-pre\"><code>&gt; show collections\r\nathlete\r\nsystem.indexes\r\n\r\n&gt; db.athlete.find()\r\n{ \"_id\" : ObjectId(\"529db366bdbf568299123013\"), \"name\" : \"taro yamada\", \"age\" : 30 }\r\n{ \"_id\" : ObjectId(\"529db458bdbf568299123014\"), \"name\" : \"hanako yamada\", \"age\" : 28 }\r\n<\/code><\/pre>\n<p>\u5c31\u50cf\u8fd9\u6837\uff0c\u8fd0\u52a8\u5458\u96c6\u5408\u4e2d\u4fdd\u5b58\u4e86\u6587\u6863\u3002<\/p>\n<h2>\u83b7\u53d6\u6587\u4ef6<br \/>\n\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7Athlete\u7c7b\u6765\u64cd\u4f5c\u83b7\u53d6\u6587\u6863\u3002\u8bf7\u901a\u8fc7objects\u5c5e\u6027\u8c03\u7528all()\u65b9\u6cd5\u83b7\u53d6\u6240\u6709\u6587\u6863\uff08\u8fd9\u5728Django\u7528\u6237\u4e2d\u5df2\u7ecf\u5f88\u719f\u6089\u4e86\u5427\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"nb\">all<\/span><span class=\"p\">()<\/span>\r\n<span class=\"p\">[<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Athlete<\/span><span class=\"p\">:<\/span> <span class=\"n\">taro<\/span> <span class=\"n\">yamada<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">,<\/span> <span class=\"o\">&lt;<\/span><span class=\"n\">Athlete<\/span><span class=\"p\">:<\/span> <span class=\"n\">hanako<\/span> <span class=\"n\">yamada<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">]<\/span>\r\n<\/code><\/pre>\n<p>\u8981\u6dfb\u52a0\u7b5b\u9009\u6761\u4ef6\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528filter()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"nb\">filter<\/span><span class=\"p\">(<\/span><span class=\"n\">age<\/span><span class=\"o\">=<\/span><span class=\"mi\">28<\/span><span class=\"p\">)<\/span>\r\n<span class=\"p\">[<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Athlete<\/span><span class=\"p\">:<\/span> <span class=\"n\">hanako<\/span> <span class=\"n\">yamada<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">]<\/span>\r\n<\/code><\/pre>\n<p>\u5982\u679c\u53ea\u9700\u8981\u83b7\u53d6\u4e00\u4e2a\u6587\u6863\uff0c\u53ef\u4ee5\u4f7f\u7528get()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"n\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">age<\/span><span class=\"o\">=<\/span><span class=\"mi\">28<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&lt;<\/span><span class=\"n\">Athlete<\/span><span class=\"p\">:<\/span> <span class=\"n\">hanako<\/span> <span class=\"n\">yamada<\/span><span class=\"o\">&gt;<\/span>\r\n<\/code><\/pre>\n<p>\u5728\u8c03\u7528get()\u65b9\u6cd5\u65f6\uff0c\u5982\u679c\u6587\u6863\u4e0d\u5b58\u5728\uff0c\u5c06\u4f1a\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"n\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"o\">=<\/span><span class=\"sa\">u<\/span><span class=\"s\">\"inoki\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">Traceback<\/span> <span class=\"p\">(<\/span><span class=\"n\">most<\/span> <span class=\"n\">recent<\/span> <span class=\"n\">call<\/span> <span class=\"n\">last<\/span><span class=\"p\">):<\/span>\r\n  <span class=\"n\">File<\/span> <span class=\"s\">\"&lt;stdin&gt;\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">line<\/span> <span class=\"mi\">1<\/span><span class=\"p\">,<\/span> <span class=\"ow\">in<\/span> <span class=\"o\">&lt;<\/span><span class=\"n\">module<\/span><span class=\"o\">&gt;<\/span>\r\n  <span class=\"n\">File<\/span> <span class=\"s\">\"\/Users\/key\/.virtualenvs\/mongoenginetest\/lib\/python2.7\/site-packages\/mongoengine\/queryset\/base.py\"<\/span><span class=\"p\">,<\/span> <span class=\"n\">line<\/span> <span class=\"mi\">186<\/span><span class=\"p\">,<\/span> <span class=\"ow\">in<\/span> <span class=\"n\">get<\/span>\r\n    <span class=\"k\">raise<\/span> <span class=\"n\">queryset<\/span><span class=\"p\">.<\/span><span class=\"n\">_document<\/span><span class=\"p\">.<\/span><span class=\"n\">DoesNotExist<\/span><span class=\"p\">(<\/span><span class=\"n\">msg<\/span><span class=\"p\">)<\/span>\r\n<span class=\"n\">documents<\/span><span class=\"p\">.<\/span><span class=\"n\">DoesNotExist<\/span><span class=\"p\">:<\/span> <span class=\"n\">Athlete<\/span> <span class=\"n\">matching<\/span> <span class=\"n\">query<\/span> <span class=\"n\">does<\/span> <span class=\"ow\">not<\/span> <span class=\"n\">exist<\/span><span class=\"p\">.<\/span>\r\n<\/code><\/pre>\n<p>\u4e3a\u4e86\u8ba1\u7b97\u6587\u6863\u6570\u91cf\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528count()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"nb\">all<\/span><span class=\"p\">().<\/span><span class=\"n\">count<\/span><span class=\"p\">()<\/span>\r\n<span class=\"mi\">2<\/span>\r\n<\/code><\/pre>\n<h2>\u6587\u4ef6\u7684\u66f4\u65b0<br \/>\n\u5728\u4e2d\u6587\u4e2d\uff0c\u66f4\u65b0\u6587\u4ef6\u53ef\u4ee5\u901a\u8fc7\u6267\u884c\u5b9e\u4f8b\u7684save()\u65b9\u6cd5\u6765\u5b8c\u6210\u3002\u5982\u679c\u6587\u4ef6\u4e0d\u5b58\u5728\uff0c\u5219\u4f1a\u88ab\u6dfb\u52a0\uff0c\u5982\u679c\u5b58\u5728\uff0c\u5219\u4f1a\u88ab\u66f4\u65b0\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">athlete<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"n\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">name<\/span><span class=\"o\">=<\/span><span class=\"sa\">u<\/span><span class=\"s\">\"taro yamada\"<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">age<\/span> <span class=\"o\">=<\/span> <span class=\"mi\">50<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">save<\/span><span class=\"p\">()<\/span>\r\n<span class=\"o\">&lt;<\/span><span class=\"n\">Athlete<\/span><span class=\"p\">:<\/span> <span class=\"n\">taro<\/span> <span class=\"n\">yamada<\/span><span class=\"o\">&gt;<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">age<\/span>\r\n<span class=\"mi\">50<\/span>\r\n<\/code><\/pre>\n<h2>\u5220\u9664\u6587\u4ef6\u5bf9\u4e8eAthlete\u7c7b\u7684\u5b9e\u4f8b\uff0c\u53d1\u51fadelete()\u65b9\u6cd5\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">hanako<\/span> <span class=\"o\">=<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"n\">get<\/span><span class=\"p\">(<\/span><span class=\"n\">age<\/span><span class=\"o\">=<\/span><span class=\"mi\">28<\/span><span class=\"p\">)<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">hanako<\/span><span class=\"p\">.<\/span><span class=\"n\">delete<\/span><span class=\"p\">()<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"nb\">all<\/span><span class=\"p\">()<\/span>\r\n<span class=\"p\">[<\/span><span class=\"o\">&lt;<\/span><span class=\"n\">Athlete<\/span><span class=\"p\">:<\/span> <span class=\"n\">taro<\/span> <span class=\"n\">yamada<\/span><span class=\"o\">&gt;<\/span><span class=\"p\">]<\/span>\r\n<\/code><\/pre>\n<p>&#8220;\u6c49\u5b50\u5df2\u7ecf\u88ab\u5220\u9664\u4e86:)&#8221;<\/p>\n<p>\u5982\u679c\u5728all\uff08\uff09\u65b9\u6cd5\u540e\u9762\u94fe\u5f0f\u8c03\u7528delete\uff08\uff09\u65b9\u6cd5\uff0c\u6240\u6709\u7684\u5185\u5bb9\u90fd\u4f1a\u88ab\u5220\u9664\u6389\uff08\u4f7f\u7528filter\uff08\uff09\u65b9\u6cd5\u65f6\u4e5f\u662f\u540c\u6837\u7684\u60c5\u51b5\uff09\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"nb\">all<\/span><span class=\"p\">().<\/span><span class=\"n\">delete<\/span><span class=\"p\">()<\/span>\r\n<span class=\"o\">&gt;&gt;&gt;<\/span> <span class=\"n\">Athlete<\/span><span class=\"p\">.<\/span><span class=\"n\">objects<\/span><span class=\"p\">.<\/span><span class=\"nb\">all<\/span><span class=\"p\">()<\/span>\r\n<span class=\"p\">[]<\/span>\r\n<\/code><\/pre>\n<p>\u828b\u5934\u4e5f\u5df2\u88ab\u5220\u9664:)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u7bc7\u6587\u7ae0\u662f\u300aMongoDB Advent Calendar 2013\u300b\u7684\u7b2c\u4e09\u5929\u3002 MongoEngine\u662f\u4ec0\u4e48 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-30009","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>\u5c1d\u8bd5\u4f7f\u7528MongoEngine\u63a2\u7d22MongoDB\u57fa\u7840\u77e5\u8bc6 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" 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