Node、Express、Mongoose 如何将 doc._id 从函数传递给 next() 中间件

Question

路由器：

router.post('/add/someone', ctrl.func1, ctrl.func2);

控制器：

ctrl.func1 = function(req, res, next){
     // Save to db
     SomeSchemaModel(req.body.data).save(function(err, doc){
          if(!err){
               // assuming that theres no error
               // how can I pass the doc._id
               // to the next middleware
               // using the next() fucntion?
               next();
          }     
     }

}


ctrl.func2 = function(req, res){
     // do something with the _id
     // from the previous func1
}

因为我从 ctrl.func2 的 req 和 res 中查找了它，但是没有来自之前 ctrl.func1.

谢谢！

Answer 1

您可以将其附加到您的 req 对象上

ctrl.func1 = function(req, res, next){
     // Save to db
     SomeSchemaModel(req.body.data).save(function(err, doc){
          if(!err){
               // assuming that theres no error
               // how can I pass the doc._id
               // to the next middleware
               // using the next() fucntion?
               req.docId = doc._id;
               next();
          }     
     }

}


ctrl.func2 = function(req, res){
     // do something with the _id
     // from the previous func1
     console.log(req.docId);
}

Node、Express、Mongoose 如何将 doc._id 从函数传递给 next() 中间件

Node, Express, Mongoose how to pass doc._id from a function to next() middleware

next

mongoose

mongodb

node.js

express