Meteor 1.4 Aldeed Collection2 无法开箱即用答案

【问题标题】：Meteor 1.4 Aldeed Collection2 not working out of the boxMeteor 1.4 Aldeed Collection2 无法开箱即用
【发布时间】：2017-05-15 07:51:16
【问题描述】：

我刚刚创建了一个新项目。

这些是我添加到项目中的包：

aldeed:collection2-core@2.0.0
aldeed:autoform

我还安装了 npm 包，meteor npm install --save simpl-schema。

我创建了一个/lib 文件夹。

在其中，我使用以下代码创建了一个common.js 文件：

var Books = new Mongo.Collection("books");

var Schemas = {};

Schemas.Book = new SimpleSchema({
    title: {
        type: String,
        label: "Title",
        max: 200
    },
    author: {
        type: String,
        label: "Author"
    },
    copies: {
        type: SimpleSchema.Integer,
        label: "Number of copies",
        min: 0
    },
    lastCheckedOut: {
        type: Date,
        label: "Last date this book was checked out",
        optional: true
    },
    summary: {
        type: String,
        label: "Brief summary",
        optional: true,
        max: 1000
    }
});

Books.attachSchema(Schemas.Book);

我一重新启动应用程序，它就崩溃了，给我丢了这个：

=> Exited with code: 1
W20161231-01:03:28.126(-5)? (STDERR) /home/mehdi/.meteor/packages/meteor-tool/.1.4.2_3.17tso1e++os.linux.x86_64+web.browser+web.cordova/mt-os.linux.x86_64/dev_bundle/server-lib/node_modules/fibers/future.js:280
W20161231-01:03:28.127(-5)? (STDERR)                        throw(ex);
W20161231-01:03:28.127(-5)? (STDERR)                        ^
W20161231-01:03:28.127(-5)? (STDERR) 
W20161231-01:03:28.127(-5)? (STDERR) TypeError: Cannot read property 'definitions' of undefined
W20161231-01:03:28.127(-5)? (STDERR)     at /home/mehdi/workspace/collection/node_modules/simpl-schema/dist/SimpleSchema.js:778:39
W20161231-01:03:28.128(-5)? (STDERR)     at Function._.each._.forEach (/home/mehdi/workspace/collection/node_modules/underscore/underscore.js:158:9)
W20161231-01:03:28.128(-5)? (STDERR)     at checkSchemaOverlap (/home/mehdi/workspace/collection/node_modules/simpl-schema/dist/SimpleSchema.js:777:24)
W20161231-01:03:28.128(-5)? (STDERR)     at SimpleSchema.extend (/home/mehdi/workspace/collection/node_modules/simpl-schema/dist/SimpleSchema.js:407:7)
W20161231-01:03:28.128(-5)? (STDERR)     at new SimpleSchema (/home/mehdi/workspace/collection/node_modules/simpl-schema/dist/SimpleSchema.js:96:10)
W20161231-01:03:28.128(-5)? (STDERR)     at [object Object].c2AttachSchema [as attachSchema] (packages/aldeed:collection2-core/collection2.js:35:10)
W20161231-01:03:28.128(-5)? (STDERR)     at meteorInstall.lib.common.js (lib/common.js:33:7)
W20161231-01:03:28.128(-5)? (STDERR)     at fileEvaluate (packages/modules-runtime.js:181:9)
W20161231-01:03:28.128(-5)? (STDERR)     at require (packages/modules-runtime.js:106:16)
W20161231-01:03:28.129(-5)? (STDERR)     at /home/mehdi/workspace/collection/.meteor/local/build/programs/server/app/app.js:60:1

知道有什么问题吗？

【问题讨论】：

出于好奇，为什么通过meteor add 安装collection2 而通过npm 安装simple-schema？ collection2 自动添加简单模式。 collection2-core 你也npm install this simple-schema 吗？
@MichelFloyd 我按照 Aldeed 自己的安装说明通过npm 安装了它collection2-core@2.0.0。我也是npm installsimple-schema，但是出现同样的错误。
您在哪里找到这些说明？没有提到 npm here
嘿伙计，新年快乐！ :) 我在这里得到了说明：github.com/aldeed/meteor-collection2/blob/master/README.md
嗯，好的。您是否按照该页面上的说明检查了版本文件？

标签： meteor schema meteor-autoform meteor-collection2

【解决方案1】：

试试这个....

var Books = new Mongo.Collection("books");

Books.schema = new SimpleSchema({
    title: {
        type: String,
        label: "Title",
        max: 200
    },
    author: {
        type: String,
        label: "Author"
    },
    copies: {
        type: SimpleSchema.Integer,
        label: "Number of copies",
        min: 0
    },
    lastCheckedOut: {
        type: Date,
        label: "Last date this book was checked out",
        optional: true
    },
    summary: {
        type: String,
        label: "Brief summary",
        optional: true,
        max: 1000
    }
});

Books.attachSchema(Books.schema);

【讨论】：

【解决方案2】：

或者，您也可以将架构附加为：

const Books = new Mongo.Collection("books");
Books.attachSchema(new SimpleSchema({
  title: {
    type: String,
    label: "Title",
    max: 200
  },
  ...
}));

【讨论】：

【解决方案3】：

在 NPM 包 simpl-schema 中使用时，SimpleSchema 不被视为全局变量。您必须确保：

import SimpleSchema from 'simpl-schema';

【讨论】：