如何将项目添加到RacerJs DerbyJs的集合中？

我想使用RacerJs/DerbyJs将项目添加到集合，但它不起作用。我一定是真的忽视的东西...如何将项目添加到RacerJs DerbyJs的集合中？

我试过

model.set('news', [ 
    { text: "something" } 
]);

这确实设置一个新闻条目。但是，当我这样做另一个时，它只会覆盖现有的项目，而不是添加一个新的。怎么做？

model.push('news', {text:"someText"})也因为“对象不是数组”而失败。

基本上，我只想要“发布更新并显示在'墙'应用程序”的最基本版本，没有任何房间也没有使用阵列。只有一个集合，就是这样。

堆栈跟踪的.push()变种：

Wed May 22 2013 09:35:24 GMT+0200 (W. Europe Daylight Time) (23168) d7564d2d-f23 
8-4ce0-a0a2-6e376e9b5cb1 ? ver: 0 - push 'news', { text: 'adsf' } 

C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\ 
Memory.js:185 
    throw new TypeError(arr + ' is not an Array'); 
     ^
TypeError: [object Object] is not an Array 
    at Object.arrayLookupSet [as _arrayLookupSet] (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\Memory.js:185:11) 
    at Object.applyArrayMethod [as _applyArrayMethod] (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\Memory.js:145:18) 
    at Object.push (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\Memory.js:118:15) 
    at applyTxn (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\transaction.js:114:32) 
    at Object.exports.applyTxnToDoc (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\transaction.js:126:3) 
    at Function.QueryInterface.publish (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\adapters\pubsub-memory\channel-interface-query.js:25:24) 
    at PubSub.publish (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\pubSub\PubSub.js:63:10) 
    at Store.module.exports.proto.publish (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\pubSub\pubSub.Store.js:174:20) 
    at publish (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\txns\txns.Store.js:230:15) 
    at next (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\middleware.js:7:26) 
    at module.exports.events.middleware.txn (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\txns\txns.Store.js:220:11) 
    at Store._sendToDb.lockingDone (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\Store.js:294:12) 
    at mergeAll.setupRoutes (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\adapters\db-memory\index.js:70:13) 
    at DbMemory.mergeAll.get (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\adapters\db-memory\index.js:44:5) 
    at mergeAll.setupRoutes (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\adapters\db-memory\index.js:62:16) 
    at DbMemory.mergeAll.get (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\adapters\db-memory\index.js:44:5) 
    at mergeAll.setupRoutes (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\adapters\db-memory\index.js:60:14) 
    at next (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\Store.js:321:15) 
    at Store._sendToDb (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\Store.js:324:10) 
    at writeToDb (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\txns\txns.Store.js:216:15) 
    at next (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\middleware.js:7:26) 
    at serialEmitPrep (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\txns\txns.Store.js:125:9) 
    at next (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\middleware.js:7:26) 
    at incrVer (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\modes\lww.js:18:12) 
    at next (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\middleware.js:7:26) 
    at Object.module.exports.events.init.store.eachContext.context.guardWrite (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\accessControl\accessControl.Store.js:54:51) 
    at accessController (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\txns\txns.Store.js:103:17) 
    at next (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\middleware.js:7:26) 
    at Object.run (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\middleware.js:10:12) 
    at Socket.module.exports.events.socket (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\txns\txns.Store.js:267:26) 
    at Socket.racer.log.sockets.sockets.on.socket.on (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\lib\log.server.js:150:20) 
    at Socket.EventEmitter.emit [as $emit] (events.js:91:17) 
    at SocketNamespace.handlePacket (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\namespace.js:335:22) 
    at Manager.onClientMessage (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\manager.js:488:38) 
    at WebSocket.Transport.onMessage (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transport.js:387:20) 
    at Parser. (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:39:10) 
    at Parser.EventEmitter.emit (events.js:88:17) 
    at opcodeHandlers.1.finish (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:288:16) 
    at Parser.opcodeHandlers.1.expectData [as expectHandler] (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:299:15) 
    at Parser.add (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:466:24) 
    at Parser.expect (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:499:10) 
    at Parser.opcodeHandlers.1.expectData (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:298:18) 
    at Parser.add (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:466:24) 
    at Parser.expect (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:499:10) 
    at opcodeHandlers.1.expectData (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:296:16) 
    at opcodeHandlers.1 (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:313:9) 
    at Parser.processPacket (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:533:8) 
    at Parser.add (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:466:24) 
    at Socket.WebSocket.onSocketConnect (C:\xampp\htdocs\Derbyjs\KnowEdge\app1\node_modules\derby\node_modules\racer\node_modules\socket.io\lib\transports\websocket\hybi-16.js:141:17) 
    at Socket.EventEmitter.emit (events.js:88:17) 
    at TCP.onread (net.js:396:14)

来源

2013-05-21 Willem Mulder

下找到什么是堆栈跟踪？ – SLaks

感谢您的检查;我用stacktrace更新了这个问题！ –

创建集合中的项目，你可以调用model.set和显式指定路径包含文档ID，例如：

model.set('news.' + model.id(), { 
    text: "something" 
})

model.id方法将产生每次呼叫时都有唯一的ID。

来源

2013-05-23 07:55:28

我曾尝试过，但我认为它没有工作，因为显然，model.subscribe('news', function(err,items){...})不起作用，所以我的模板永远不会更新。现在，我建立它听一个返回所有新闻项目的查询，它的工作原理。谢谢！ –

如果您正在尝试将文档添加到集合，你也可以拨打model.add

model.add('news', { 
    text: "Something" 
})

这将增加一个新的文件到新闻收集和为您生成的ID。更多文档可以在http://derbyjs.com/#getters_and_setters

来源

2013-06-21 17:38:37 JasonM

如何将项目添加到RacerJs DerbyJs的集合中？

回答

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