Ufdjrw

In Post request, I want to pull objectId's data and save it in the database. There will be 2 or 3 objectId's which will I will be getting it in array. From that array I am able to pull the data with separate "for loops" but at the end I am not able to save the data.
I want to know how to move data from one array to another or directly save the data.

Schema:--

const jobSch = new Schema(
 token : type:Number,
 name : type:String,
 phoneNumber: type:Number,
 gender : type:String,
 stage : type:String,
 categoryId : [Schema.Types.ObjectId],
 subCategoryId : [Schema.Types.ObjectId],
 serviceId : [Schema.Types.ObjectId],
 category : [String],
 subcategory : [String],
 service: [String],
 paymenttype: [String],
 tax: type:Number,
 totalprice: type:String,
 servicePerson: type:String,
 createdOn : type:Date, default:new Date(),
 updatedOn : type:Date, default:new Date() 
);

POST request code:--

router.post('/', async (req, res) => 
 let ids = req.body;
 let catId = ids.categoryId;
 console.log("catId", catId)
 console.log("catId.length", catId.length)
 let subcatId = ids.subCategoryId;
 console.log("subcatId", subcatId);
 console.log("subcatId.length", subcatId.length)
 let serId = ids.serviceId;
 console.log("serId", serId);
 console.log("subcatId.length", serId.length)
 let job = new Job(ids);
 let catgy=[];
 let subcatgy=[];
 let subser=[];

 for (i = 0; i < catId.length; i++) 
 Category.findById(catId[i])
 .then(category => 
 if (category && category != null) 
 console.log('category.name', category.name);
 catgy.push(`$category.name`)
 console.log(catgy);

 
 )
 
 for (i = 0; i < subcatId.length; i++) 
 Service.findById(subcatId[i])
 .then(service => 
 if (service && service != null) 
 console.log('service.name', service.name);
 subcatgy.push(`$service.name`)
 console.log(subcatgy);

 
 )
 
 for (i = 0; i < serId.length; i++) 
 Subservice.findById(serId[i])
 .then(subService => 
 if (subService && subService != null) 
 console.log('subservice.name', subService.subService);
 subser.push(`$subService.subService`)
 console.log(subser);
 
 )
 
 var category = catgy.slice();
 console.log("category1", category)
 var service = subcatgy.slice();
 console.log('service2', service);
 var subService = subser.slice();
 console.log('subService3',subService);
 console.log(job);
 job.save().then(job => 
 res.status(201).json(
 message: 'Job saved successfully', job
 )
 ).catch(err => console.log(err));
);

The problem is that the callback function of the resolved promises (findById) are executed asynchronously. Try checking this out, I think it will help you.