CODEWITHSUNDEEP
node.jsmongoosesynchronous
AHmedRef
AHmedRef

Reputation: 2611

How to use a synchronous queries with mongoose on NodeJS server

I tried to make a synchronous queries using mongoose ODM using 'await' keyword basing on another post as the example bellow :

 const query= userModel.find({});
 const syncResutlt= await query.exec();
 console.log(syncResutlt);

but I got this error message : 

  const result2 = await query.exec();
                        ^^^^^
  SyntaxError: Unexpected identifier

I tried also yield generator keyword, but I get always the same error SyntaxError: Unexpected identifier

for information I have nodeJs V8.

Upvotes: 1

Views: 991

Answers (1)

Zeeshan Tariq
Zeeshan Tariq

Reputation: 624

You can only await Promises or a function marked as async, which essentially returns a Promise.

Correct Way

let getUser=async function(user_id){
    let info= await User.findById(user_id);
    console.log(info); // contains user object
}

Incorrect Way

let getUser= function(user_id){
    let info= await User.findById(user_id); //will throw an exception on await keyword
    console.log(info); // contains user object
}

Hope it helps.

Upvotes: 3

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