调用activator.init后,急切加载将失败并显示错误“TypeError:无法读取未定义的属性'名称'
经过多次挖掘,我发现问题来自“集合”模块,它嵌套在依赖树的深处。
当调用activator.init时,它会导入“styliner”,导入“q-io”,导入“collections”。
问题来自collections / shim,它全局定义了Array。这不知何故打破了Sequelize渴望加载。
我需要在我的项目中使用sequelize eager loading和activator。如何解决这个问题?
const config = require('./config/config')
const Sequelize = require('sequelize');
const activator = require('activator')
const sequelize = new Sequelize(config.pgsql.database, config.pgsql.user, config.pgsql.password, {
host: config.pgsql.host,
dialect: 'postgres',
operatorsAliases: false,
// disable logging; default: console.log
logging: false,
})
const User = sequelize.define('user', {
name: Sequelize.STRING
})
const Network = sequelize.define('network', {
name: Sequelize.STRING
})
User.belongsToMany(Network, { through: 'user_networks' })
Network.belongsToMany(User, { through: 'user_networks' })
sequelize.sync({force: true})
.then(() => User.create({
name: 'janedoe',
}))
.then(jane => jane.createNetwork({name: 'social'}))
.then(() => console.log('BEFORE activator.init()'))
//eager loading is fine before activator.init is called
.then(() => User.findAll({include: [Network]}))
.then(users => users.forEach(user => console.log(user.toJSON())))
.then(() => {
activator.init({
user: {
find: (id, callback) => {},
activate: (id, callback) => {},
setPassword: (id,password,callback) => {}
},
transport: null,
templates: activator.templates.file('./'),
from: 'admin@mttr.net',
signkey: '',
id: 'id'
})
})
.then(() => console.log('AFTER activator.init()'))
//eager loading breaks after activator.init is called
.then(() => User.findAll({include: [Network]}))
.then(users => users.forEach(user => console.log(user.toJSON())))
.catch(err => console.log(err))
控制台输出
在activator.init()之前 {id:1,
名称:'janedoe',
created_at:2018-01-05T17:31:39.106Z,
updated_at:2018-01-05T17:31:39.106Z,
deleted_at:null,
版本:0,
网络:
[{id:1,
名称:'social',
created_at:2018-01-05T17:31:39.118Z,
updated_at:2018-01-05T17:31:39.118Z,
deleted_at:null,
版本:0,
user_networks:[Object]}]}
AFTER activator.init()
TypeError:无法读取未定义的属性“name” 在Function._validateIncludedElement(/Users/derekxm/git/mttr/app_backend/node_modules/sequelize/lib/model.js:534:41)
在options.include.options.include.map.include(/Users/derekxm/git/mttr/app_backend/node_modules/sequelize/lib/model.js:394:37)
在Array.map(native)
在Function._validateIncludedElements(/Users/derekxm/git/mttr/app_backend/node_modules/sequelize/lib/model.js:390:39)
在Promise.try.then.then(/Users/derekxm/git/mttr/app_backend/node_modules/sequelize/lib/model.js:1537:14)
在tryCatcher(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/util.js:16:23)
在Promise._settlePromiseFromHandler(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/promise.js:510:31)
在Promise._settlePromise(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/promise.js:567:18)
在Promise._settlePromise0(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/promise.js:612:10)
在Promise._settlePromises(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/promise.js:691:18)
at Async._drainQueue(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/async.js:133:16)
在Async._drainQueues(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/async.js:143:10)
在Immediate.Async.drainQueues(/Users/derekxm/git/mttr/app_backend/node_modules/bluebird/js/release/async.js:17:14)
在runCallback(timers.js:649:20)
在tryOnImmediate(timers.js:622:5)
at processImmediate [as _immediateCallback](timers.js:594:5)
答案 0 :(得分:0)
collections / shim非常具有侵入性,如果必须使用sequelize eager loading和activator,你应该分叉activator并编辑源代码以删除Styliner。
在lib / mailcomposer.js中删除Styliner = require('styliner') 从forked repo安装激活器。这解决了急切的加载问题,但是由于您删除了样式器,因此无法为您的电子邮件模板加载css。