Comment faire une requête à l'aide Mongoose, mais prendre ce document pour faire d'autres choses?

Question

User.findOne({}, function(err, doc){
   //do stuff with "doc" here.
});

C'est la façon dont je fais actuellement il. Mais si je veux prendre « doc », et juste faire des choses.

User.findOne({}, function(err, doc){
   //do stuff with "doc" here.
});
runAnotherFunction(doc.name)
doc...

Comment puis-je prendre « doc » de la partie « fonction »?

Answer 1

Node is event driven, it's not procedural code like you're probably used to. Before mongoose can finish retrieving a record execution can already be well passed the call the findOne. Anything that needs to be done with the doc should happen in the callback (The "function" part).

Answer 2

you can try "step" , https://github.com/creationix/step

This makes it easier to control logic flow.

See this for example :

async nodejs querying and processing results