Filter like API using query string in nodeJS and mongoDB-CodePudding

I'm trying to write a simple API using filter to get users from database. I want to filter this data by given specific params, which are optional:

How to make it flexible to get data from database by querying API with no params, single param and multiple params ?

Controller:-

Method-1

const articles = await userTable.find({
    '$or': [{
        'name': req.query.name
     },
     {
       'address': req.query.address
     },
     {
       'address': req.query.address,
       'name': req.query.name
     }]
  });

When I hit by single params it give correct response but when hit by multiple params http://localhost:4000/api/filter?name=abhishek&address=tejaji it give wrong response but i want only that row which contains name abhishek and adress tejaji

Method-2

const articles = await userTable.find({
    name:req.query.name,address:req.query.address,
    $or: [ { name:req.query.name }, {address:req.query.address } ]
});

When i hit by single params it give 0 response but when hit by multiple params http://localhost:4000/api/filter?name=abhishek&address=tejaji it give correct response but i want result from single params also

Method-3

const articles = await userTable.find({
  'usertables': {
        $elemMatch: {
          'name': req.query.name,
          'address': req.query.address
        }
    }
});

When i hit by single params http://localhost:4000/api/filter?name=abhishek or multiple http://localhost:4000/api/filter?name=abhishek&address=tejaji it always give all rows from table, which is wrong.

Route:-

router.get("/filter", userController.filterMethod);

CodePudding user response：

Try to use a filter object and add keys to it based on what params are present:

const { name, address } = req.query;
const filter = {}
if (name) {
    filter.name = name 
}
if (address) {
    filter.address = address
}
const articles = await userTable.find(filter);