Question

我可以连接到localhost或Atlas，但是当我尝试使用||时。坏了连接到Atlas时必须指定“ dbName”，但这会破坏我的本地主机。

此代码适用于localhost：

mongoose.connect( process.env.LOCAL );
mongoose.connection.on("open", function (ref) {
  console.log("Connected to mongo server.");
});
mongoose.connection.on('error', function (err) { console.log(err) });

此代码适用于我的地图集：

mongoose.connect( process.env.ATLAS_URI, { useNewUrlParser: true, dbName: 'wwatlasDB' });
mongoose.connection.on("open", function (ref) {
  console.log("Connected to mongo server.");
});
mongoose.connection.on('error', function (err) { console.log(err) });

但是当我尝试时：

mongoose.connect( process.env.LOCAL || process.env.ATLAS_URI, { useNewUrlParser: true, dbName: 'wwatlasDB' });

失败。有办法吗？

Answer 1

简单的方法就是检查在env之前是否有当前的connect，例如：

if(process.env.LOCAL) {
 mongoose.connect( process.env.LOCAL );
} else {
 mongoose.connect( process.env.ATLAS_URI, { useNewUrlParser: true, dbName: 'wwatlasDB' } );
}
mongoose.connection.on("open", function (ref) {
 console.log("Connected to mongo server.");
});
mongoose.connection.on('error', function (err) { console.log(err) });

Answer 2

mongoose.connect( process.env.ATLAS_URI, { useNewUrlParser: true, dbName: 'wwatlasDB' });
mongoose.connection.on("open", function (ref) {
  console.log("Connected to mongo server.");
});
mongoose.connection.on('error', function (err) { console.log(err) });

这似乎也可以在本地连接！

连接到Altlas或localhost

2 个答案: