Angular2：フォームの値をデフォルトフィールドのモデルに変換する際の問題

RESTAPIに投稿する必要のある棚卸しフォームで忙しいです。デフォルト値0で初期化される3つのフィールドを持つstockTakeモデルがあります。3つのフィールド「StockTakeID、IDKey、およびPackSize」は、データを入力する必要がある角度形式の一部ではありません。私の問題は、デフォルト値を持つこれら3つのフィールドを持つモデルをRestServiceに送信することです。stockTakeForm.valueを送信すると、これらの3つのフィールドが送信されるデータの一部ではないため、エラーが発生します...これを機能させる方法はありますか？

私のstock-take.model.ts：

export class StockTakeModel {

    constructor(
    StockTakeID: number = 0,
        IDKey: number = 0,
        BarCode: number,
        ProductCode: string,
        SheetNo: string,
        BinNo: string,
        Quantity: number,
        PackSize: number = 0) { }
}

私のstock-take.component.ts：

import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';

import { RestService } from '../../services/rest.service';

import { StockTakeModel } from '../../models/stock-take.model';

@Component({
  selector: 'stock-take',
  templateUrl: './stock-take.component.html',
  styleUrls: ['./stock-take.component.css']
})
export class StockTakeComponent implements OnInit {
    stockTakeForm: FormGroup;   

  constructor(private fb: FormBuilder, private restService: RestService) { 
    this.stockTakeForm = fb.group({
        'sheetNo':['', Validators.required],
        'binNo':['', Validators.required],
        'barcode':['', Validators.required],
        'Qty':['', Validators.required]
    }); 
    }

  submitStockTake(stockTakeModel: StockTakeModel) {
      //console.log(stockTakeModel);

    this.restService.postStockTake(stockTakeModel)
    .subscribe(
    (res) => {
        console.log(res);
    },
    (res) => {
        console.log("failure: " + res);
    }
    );
    this.stockTakeForm.reset();
  }

  ngOnInit() {

  }
}

私のstock-take.component.html：

<div class="row">
    <div class="col-md-6 col-md-push-3">
        <h1>Stock Take</h1>
        <br /><br />
        <form [formGroup]="stockTakeForm" role="form" (ngSubmit)="submitStockTake(stockTakeForm.value)">
            <input type="text" placeholder="Enter Sheet Number" class="form-control" id="sheetNo" [formControl]="stockTakeForm.controls['sheetNo']" name="sheetNo">
            <input type="text" placeholder="Enter Bin Number" class="form-control" id="binNo" [formControl]="stockTakeForm.controls['binNo']" name="binNo">
            <input type="number" placeholder="Enter Barcode" class="form-control" id="bCode" [formControl]="stockTakeForm.controls['barcode']" name="barcode">
            <input type="number" placeholder="Enter Quantity" clas="form-control" id="Qty" [formControl]="stockTakeForm.controls['Qty']" name="quantity">
            <button class="btn btn-block" [disabled]="!stockTakeForm.valid">Submit</button>
        </form>
    </div>
</div>

更新されたstock-take.component：

import { Component, OnInit } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';

import { RestService } from '../../services/rest.service';

import { StockTakeModel } from '../../models/stock-take.model';

@Component({
  selector: 'stock-take',
  templateUrl: './stock-take.component.html',
  styleUrls: ['./stock-take.component.css']
})
export class StockTakeComponent implements OnInit {
    stockTakeForm: FormGroup;
    stockTakeModel: StockTakeModel;

  constructor(private fb: FormBuilder, private restService: RestService) { 
    this.stockTakeForm = fb.group({
        'sheetNo':['', Validators.required],
        'binNo':['', Validators.required],
        'barcode':['', Validators.required],
        'Qty':['', Validators.required]
    });
    }

    doStockTake(val: any) {
        //console.log("val:" + JSON.stringify(val));
        this.stockTakeModel = new StockTakeModel(0, 0, val[Object.keys(val)[2]], '', val[Object.keys(val)[0]], val[Object.keys(val)[1]], val[Object.keys(val)[3]], 0);

//  console.log(this.stockTakeModel);
    console.log(JSON.stringify(this.stockTakeModel));
    }

  submitStockTake(stockTakeModel: StockTakeModel) {
      //console.log(stockTakeModel);

    this.restService.postStockTake(stockTakeModel)
    .subscribe(
    (res) => {
        console.log(res);
    },
    (res) => {
        console.log("failure: " + res);
    }
    );
    this.stockTakeForm.reset();
  }

  ngOnInit() {

  }
}