Question

我如何在猫鼬中访问另一个数据库的 schema ？例如：db1 has users list. db2 has another list. My application has all the models defined only for db1. but now i want to access the list of db2 in my application。我该如何实现？请帮助我。

Answer 1

您可以在Connection类型上使用useDb函数。它返回另一个连接。如果您共享相同的架构，则您的代码可能如下所示：

var mongoose = require('mongoose');
mongoose.connect('mongodb://127.0.0.1:27017/test');

var schema = new Schema({
    // ...    
});

var db = mongoose.connection;
var Model1 = db.model('schema', schema, 'colName');

var db2 = db.useDb('test2');
var Model2 = db2.model('schema2', schema, 'colName');

猫鼬多个数据库的单个应用程序

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