Keystone教程:无法读取未定义的属性“ id”

时间:2019-04-25 05:47:45

标签: node.js keystonejs

我一直在遵循从头启动KeystoneJS的教程。但是当我进入教程的第二部分,创建数据模型时,出现了这个错误:

Error thrown for request: /keystone/
TypeError: Cannot read property 'id' of undefined
    at IndexRoute (/root/websie/node_modules/keystone/admin/server/routes/index.js:39:16)
    at Layer.handle [as handle_request] (/root/websie/node_modules/express/lib/router/layer.js:95:5)
    at next (/root/websie/node_modules/express/lib/router/route.js:137:13)
    at Route.dispatch (/root/websie/node_modules/express/lib/router/route.js:112:3)
    at Layer.handle [as handle_request] (/root/websie/node_modules/express/lib/router/layer.js:95:5)
    at /root/websie/node_modules/express/lib/router/index.js:281:22
    at Function.process_params (/root/websie/node_modules/express/lib/router/index.js:335:12)
    at next (/root/websie/node_modules/express/lib/router/index.js:275:10)
    at /root/websie/node_modules/keystone/admin/server/app/createDynamicRouter.js:26:3
    at Layer.handle [as handle_request] (/root/websie/node_modules/express/lib/router/layer.js:95:5)
    at trim_prefix (/root/websie/node_modules/express/lib/router/index.js:317:13)
    at /root/websie/node_modules/express/lib/router/index.js:284:7
    at Function.process_params (/root/websie/node_modules/express/lib/router/index.js:335:12)
    at next (/root/websie/node_modules/express/lib/router/index.js:275:10)
    at handleUploadedFiles (/root/websie/node_modules/keystone/lib/uploads.js:6:54)
    at Layer.handle [as handle_request] (/root/websie/node_modules/express/lib/router/layer.js:95:5)
GET /keystone/ 500 8.835 ms

由于我是Keystone JS的新手,所以我不太清楚这个问题是代码本身还是数据库造成的。

注意事项:

  • 这是在linux环境中运行的
  • MongoDB已全新安装

这些是到目前为止的所有文件:

keystone.js

const keystone = require('keystone')

keystone.init({
        'cookie secret': 'SECRET KEY',
        'name' : 'theproject',
        'user model' : 'User',
        'auth' : 'true',
        'auto update' : 'true',
});

keystone.import('models');

keystone.start();

User.js:

const keystone = require('keystone');

var User = new keystone.List('User');

User.add({
    displayName: { type: String },
    password: { type: keystone.Field.Types.Password },
    email: { type: keystone.Field.Types.Email, unique: true },
})

User.schema.virtual('canAccessKeystone').get(function () {
    return true;
});

User.defaultColumns = 'id, displayName, email';

User.register();

1 个答案:

答案 0 :(得分:0)

您的用户模型没有“ id”属性。因此,当您将User.defaultColumns设置为“ id”时,将找不到任何内容。

所有模型都具有“ _id”属性。

我只是从您的默认列中删除“ id”并继续前进。

def exists(str):
    try:
        eval(str)
        return True
    except:
        return False

exists("lst['sublist']['item']")

如果不能解决问题,则可能是在其他地方请求ID。