[英]MissingSchemaError in NodeJS app on Heroku server
My app is successfully works on my local. 我的应用程序已成功在我的本地计算机上运行。
When I push it to a heroku server, sometimes it crashes with this error: 当我将其推送到heroku服务器时,有时会因以下错误而崩溃:
2012-12-28T10:00:53+00:00 heroku[web.1]: Starting process with command `node server.js`
2012-12-28T10:00:54+00:00 app[web.1]:
2012-12-28T10:00:54+00:00 app[web.1]: /app/node_modules/mongoose/lib/index.js:261
2012-12-28T10:00:54+00:00 app[web.1]: throw new mongoose.Error.MissingSchemaError(name);
2012-12-28T10:00:54+00:00 app[web.1]: ^
2012-12-28T10:00:54+00:00 app[web.1]: MissingSchemaError: Schema hasn't been registered for model "Activity".
2012-12-28T10:00:54+00:00 app[web.1]: Use mongoose.model(name, schema)
2012-12-28T10:00:54+00:00 app[web.1]: at Mongoose.model (/app/node_modules/mongoose/lib/index.js:261:13)
2012-12-28T10:00:54+00:00 app[web.1]: at Object.<anonymous> (/app/app/models/user.js:8:25)
2012-12-28T10:00:54+00:00 app[web.1]: at Module._compile (module.js:449:26)
2012-12-28T10:00:54+00:00 app[web.1]: at Object.Module._extensions..js (module.js:467:10)
2012-12-28T10:00:54+00:00 app[web.1]: at Module.load (module.js:356:32)
2012-12-28T10:00:54+00:00 app[web.1]: at Function.Module._load (module.js:312:12)
2012-12-28T10:00:54+00:00 app[web.1]: at Module.require (module.js:362:17)
2012-12-28T10:00:54+00:00 app[web.1]: at require (module.js:378:17)
2012-12-28T10:00:54+00:00 app[web.1]: at /app/server.js:23:3
2012-12-28T10:00:54+00:00 app[web.1]: at Array.forEach (native)
2012-12-28T10:00:55+00:00 heroku[web.1]: Process exited with status 1
2012-12-28T10:00:55+00:00 heroku[web.1]: State changed from starting to crashed
In my server.js, I am loading models with this code: 在我的server.js中,我正在使用以下代码加载模型:
var models_path = __dirname + '/app/models'
fs.readdirSync(models_path).forEach(function (file) {
require(models_path+'/'+file)
})
And my activity.js is: 我的activity.js是:
var mongoose = require('mongoose')
, Schema = mongoose.Schema
, moment = require('moment')
var schemaOptions = {
toJSON: {
virtuals: true
}
};
var ActivitySchema = new Schema({
venue: {type : Schema.ObjectId, ref : 'Venue'}
, user: {type : Schema.ObjectId, ref : 'User'}
, createdAt: {type : Date, default : Date.now}
, rate: Number
, message : String
, source : String
}, schemaOptions)
mongoose.model('Activity', ActivitySchema)
ActivitySchema.index({ "user": 1, "venue" : 1 }, { unique: true })
var modifiedAt = require('../../config/plugins.js');
ActivitySchema.plugin(modifiedAt, { index: false });
ActivitySchema.virtual('summary').get(function () {
moment.lang('en');
return moment(this.createdAt).fromNow() + ' via ' + this.source;
});
Weird thing is, sometimes the app crashes but sometimes it works. 奇怪的是,有时应用程序崩溃了,但有时却能正常工作。 What can I do to solve it?
我该怎么解决?
What I had to do in my code to resolve the 'MissingSchemaError' in mongoose was to export a function that takes mongoose as the parameter. 为了解决猫鼬中的“ MissingSchemaError”,我在代码中要做的就是导出一个以猫鼬为参数的函数。
Something like this. 这样的事情。
module.exports = function (mongoose) {
var GeoSchema = new mongoose.Schema({
loc:{ type:[Number], index:'2d'}
});
return GeoSchema;
};
I ran into the same issue. 我遇到了同样的问题。 I had modified my users module so it would create a corresponding profile document that corresponded with the users module.
我已经修改了我的用户模块,因此它将创建一个与用户模块相对应的相应概要文件。 Having that users module load the Profile schema would throw the same error when I loaded it at the top of the file.
将那个用户模块加载到Profile模式时,将其加载到文件顶部时会抛出相同的错误。 When I put it within the scope of the code I was using it fixed the problem.
当我将其放在代码范围内时,我正在使用它来解决此问题。
var Profile = mongoose.model('Profile');
I had to move the above line into the code (I think it's a timing thing, where I was trying to use it before mongo had been made a 我不得不将上面的代码移到代码中(我认为这是一个时机,我试图在将mongo制作为
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