如何检查Node.js中的字符串是否为ObjectId类型

Question

I have a route /api/:id where:id has to be of type ObjectId. Because following is the query I am runnuing

const data = await Person.find({_id:req.params.id})

It works fine if:id is of type ObjectId but if user explicitly runs the api lets say /api/anything , then Mongoose throughs an error

CastError: Cast to ObjectId failed for value "anything" at path "_id"

So, I would like to check if req.params.id is of type ObjectId and perform further operations only if it is.

Thus code would look like

if(checkObjectId(req.params.id)) {
const data = await Person.find({_id:req.params.id})
}

Answer 1

Use the Mongoose functionality:

if(mongoose.isValidObjectId(req.params.id)) {
  const data = await Person.find({_id:req.params.id})
  ...
}

Mongoose.prototype.isValidObjectId()

Returns true if Mongoose can cast the given value to an ObjectId, or false otherwise.

 mongoose.isValidObjectId(new mongoose.Types.ObjectId()); // true mongoose.isValidObjectId('0123456789ab'); // true mongoose.isValidObjectId(6); // false

Answer 2

you can use isValid method for validate object id

mongoose.Types.ObjectId.isValid('63d632828e944c3a08f15925')

Answer 3

Why if when you can use try ... catch

let data;
try {
    data = await Person.find({_id:req.params.id})
} catch(err) {
    console.log('Error retrieving data (Person):', err);
}