猫鼬：“ TypeError：未定义的类型在”

xpepermint 发表于 Dev

薄荷

我有一个使用猫鼬的模块。我的主要项目也使用猫鼬。我发现我无法将模块的连接与项目的架构一起使用。参见示例：

var mod = require('module_with_mongoose_connection');
var mongoose = require('mongoose');

var SessionSchema = new mongoose.Schema({ // replacing this with `mod.mongoose.Schema` works
...
});
mod.mongooseConnection.model('session', SessionSchema);

上面的例子抛出

    throw new TypeError('Undefined type at `' + path +
          ^
TypeError: Undefined type at `paths.name`
  Did you try nesting Schemas? You can only nest using refs or arrays.
    at Function.Schema.interpretAsType (/Users/me/Work/me/nodejs/orm-model/node_modules/mongoose/lib/schema.js:397:11)
    at Schema.path (/Users/me/Work/me/nodejs/orm-model/node_modules/mongoose/lib/schema.js:334:29)
    at Schema.add (/Users/me/Work/me/nodejs/orm-model/node_modules/mongoose/lib/schema.js:245:12)
    at Schema.add (/Users/me/Work/me/nodejs/orm-model/node_modules/mongoose/lib/schema.js:240:14)
    at new Schema (/Users/me/Work/me/nodejs/orm-model/node_modules/mongoose/lib/schema.js:72:10)
Why is that? A bug?

这个问题有什么解决方案？有毛病吗

薄荷

我发现了the solution。事实证明，只有在使用本地模块（例如require('../module_with_mongoose_connection')）时才会引发错误。在上方npm（内部node_modules）使用模块时，它可以工作。当猫鼬连接时也会引发错误dynamically patched（例如，添加诸如的属性mongooseConnection.myattr = 'something'）。