Express Query object undefined-CodePudding

I have an object postData which comes to the controller in form of query when I console log the object it has data:-

console.log("data:- ", req.query.postData);

console output:-

data:- {
         "property1":"value1",
         "property2":"value2",
         "property3":"value3",
         "property4":"value4"
       }

But when trying to restructure individual property:-

const {property1,property2,property3,property4} = req.query.postData;

console.log(property1);
console.log(property2);
console.log(property3);
console.log(property4);

console output:-

It is undefined in console log

CodePudding user response：

postData is just a string. You need to convert it to an object with JSON.parse()

const {property1,property2,property3,property4} = JSON.parse(req.query.postData);

I don't think passing JSON in the query string is really a good idea, though.

** instead, you could send it in the request body.

Or, for the query string use ?property1=value1&property2=value2&property3=value3&property4=value4

CodePudding user response：

It might be possible that the data you are getting is a type string not an object, you need to parse the string first then destructure it.

const {property1,property2,property3,property4} = JSON.parse(req.query.postData)

In general, req.query is a string not an object. I suggest you to convert your request from GET to POST and obtain these data from req.body instead of req.query, it will be much simpler and easy also a much preferred way.