Передать несколько запросов в GET запросе к mongodb

Question

// route.js

const express = require('express');

const router = express.Router();

const userHandler = require('../handler/user');

router.get('',userHandler.getUser);

module.exports = route

-

// Handler.js

const userController = require('../../core/controller/user');

// get user

getUser = async (req, res, next) => {
    //console.log(req)
    try {
        let user = await userController.getUser(req.params.id, req.query.employeeStatus, req.query.department)
        req.data = user
        next()
    }
    catch (e) {
        req.status = 400;
        next(e)
    }
}

module.exports = {getUser}

-

// controller.js

exports.getUser = async (userId,employeeStatus,department) => {

    let userRecords = await userModel.getUser(userId,employeeStatus,department);
    userRecords = userRecords.map(it => {
        return {
            id: it._id,
            firstName: it.firstName,
            lastName: it.lastName,
            pic: it.pic,
            gender: it.gender,
            dob: it.dob,
            maritalStatus: it.maritalStatus,
            nationality: it.nationality,
            streetAddress: it.streetAddress,
            city: it.city,
            state: it.state,
            postalCode: it.postalCode,
            country: it.country,
            phone: it.phone,
            email: it.email,
            jobTitle: it.jobTitle,
            department: it.department,
            dateOfJoining: it.dateOfJoining,
            employeeStatus: it.employeeStatus,
            kra: it.kra,
            assignedSupervisor: it.assignedSupervisor,
            assignedSubordinate: it.assignedSubordinate,
            workExperience: it.workExperience,
            skills: it.skills,
            password: it.password
        }
    })
    return userRecords;
}

-

// query.js

exports.getUser = async(userId, employeeStatus, department) => {

    var whereClause = '';
    if (department) {
       var whereClause ={ "department":department}
       console.log(whereClause)
       console.log( Object.keys(whereClause).length)
    } 
    if(userId) return await model.find({"_id":userId}).exec();
    if (employeeStatus){
        console.log('debewbfewhfui')
        if ( Object.keys(whereClause).length) {
            console.log(whereClause)
            whereClause +=  ','
            console.log( whereClause.toSource())
            console.log(whereClause.hasOwnProperty("employeeStatus"))

            whereClause += {"employeeStatus":employeeStatus}
        }
        console.log(whereClause)
        //whereClause = {"employeeStatus":employeeStatus}
        console.log('e',  Object.keys(whereClause).length)
    // }])
        // console.log(department)
        // return await model.find({  $and: [ { $or: [{"employeeStatus": employeeStatus }] },{"department": department} ]  }).exec();
        // return await model.find({"employeeStatus":employeeStatus}).find({"department":department}).exec();
    }
    // if(department) {
    //     console.log('55')
    //     return await model.find({"department":department}).exec();
    // };
    // if (Object.keys(whereClause).length) {
    //     console.log(whereClause)
    //     whereClause = whereClause + ','
    // }
    var query = await model.find({$and : [whereClause] }).exec();
    console.log('fssd',JSON.stringify(whereClause))
    return query
}

Я хочу, если мы передадим какой-либо отдел данных или сотрудниковestatus в запросе, он будет возвращать данные по мере необходимости, и если мы не передадим какой-либо запрос, он будет искать всех пользователей. Может кто-нибудь помочь мне, пожалуйста?

Answer 1

Чтобы условно составить фильтры запросов в зависимости от параметров, переданных в функцию, это должно работать:

query.js

exports.getUser = async (userId, employeeStatus, department) => {
  let queryFilters = { userId, employeeStatus, department };
  // The JSON stringify and parsing below would help remove undefined filter values
  // i.e if userId is not provided, while employeeStatus and department are given 
  // the queryFilters object would only contain employeeStatus and department.
  queryFilters = JSON.parse(JSON.stringify(queryFilters))
  return model.find(queryFilters);
}