Foreign Key data not saving

Hello…
I am working on a project where i creating Sale Return, basically i am searching sale invocie id and then retrieve the sale invoice and sale invoice item data and then creates sale return. sale invocie data will be stored in sale return and sal einvocie item data will be stored in sale return item
But there i sone issue after retrieving data the sale return data is saving but save return itme data is not saving.It is also not showing any error the main issue is it i snot getting the id of item

my models are these

class SaleInvoice(models.Model):
    user = models.ForeignKey(
        get_user_model(),
        on_delete=models.CASCADE,
    )
    searchCustomer=models.ForeignKey(Customer, on_delete=models.CASCADE, related_name='customersaleinvoice',null=True)
    PAYMENT_CHOICES = (
        ('paid', 'Paid'),
        ('unpaid', 'Unpaid'),
    )
    paymentType = models.CharField(max_length=15, choices=PAYMENT_CHOICES,default=None)
    SHIPMENT_CHOICES = (
        ('1', 'Delivery'),
        ('2', 'Pick Up'),
    )
    shipmentType=models.CharField(max_length=1, choices=SHIPMENT_CHOICES,default=None)
    searchVehicle=models.ForeignKey(Vehicle, on_delete=models.CASCADE, related_name='vehiclesaleinvoice',null=True)
    searchDriver=models.ForeignKey(Driver, on_delete=models.CASCADE, related_name='driversaleinvoice',null=True)
    selectNTNInInvoice=models.ForeignKey(NTN, on_delete=models.CASCADE, related_name='selectntn',null=True)
    invoiceDate=models.DateField(blank=True, null=True)
    totalSaleAmount=models.CharField(max_length=15,null=True)
    saleInvoiceAmount=models.CharField(max_length=15,null=True)
    saleInvoiceDiscount=models.CharField(max_length=15,null=True)
    STATUS_CHOICES = (
        ('in_progress', 'In Progress'),
        ('delivered', 'Delivered'),
        ('not_delivered', 'Not Delivered'),
    )
    shipmentStatus = models.CharField(max_length=20,choices=STATUS_CHOICES,default='in_progress',)


class SaleReturn(models.Model):
    user = models.ForeignKey(
        get_user_model(),
        on_delete=models.CASCADE,
    )
    customerSaleReturn=models.TextField(null=True)
    paymentTypeSaleReturn = models.TextField(null=True)
    shipmentTypeSaleReturn=models.TextField(null=True)
    searchVehicleSaleReturn=models.TextField(null=True)
    searchDriverSaleReturn=models.TextField(null=True)
    selectNTNInInvoiceSaleReturn=models.CharField(max_length=15,null=True)
    invoiceDateSaleReturn=models.DateField(blank=True, null=True)
    totalSaleAmountSaleReturn=models.CharField(max_length=15,null=True)
    saleInvoiceAmountSaleReturn=models.CharField(max_length=15,null=True)
    saleInvoiceDiscountSaleReturn=models.CharField(max_length=15,null=True)
    STATUS_CHOICES = (
        ('in_progress', 'In Progress'),
        ('delivered', 'Delivered'),
        ('not_delivered', 'Not Delivered'),
    )
    shipmentStatusSaleReturn = models.CharField(max_length=20,choices=STATUS_CHOICES,default='in_progress',)
    searchSaleInvoice=models.ForeignKey(SaleInvoice, on_delete=models.CASCADE, related_name='saleinvoiceid',null=True)


class SaleInvoiceItem(models.Model):
    saleinvoice = models.ForeignKey(
        SaleInvoice,
        on_delete=models.CASCADE,related_name="saleinvoiceitem"
    )
    saleInvoiceItemName=models.ForeignKey(Egg, on_delete=models.CASCADE, related_name='saleinvoiceitemegg',null=True)
    saleInvoiceItemQuantity=models.CharField(max_length=15,null=True)
    saleInvoiceItemUnitPrice=models.CharField(max_length=15,null=True)
    saleInvoiceItemTotalAmount=models.CharField(max_length=15,null=True)
    saleInvoiceItemDiscount=models.CharField(max_length=15,null=True)
    saleInvoiceItemDiscountPrice=models.CharField(max_length=15,null=True)
    
class SaleReturnItem(models.Model):
    salereturn = models.ForeignKey(
        SaleReturn,
        on_delete=models.CASCADE,related_name="salereturnitem"
    )
    saleReturnItemName=models.ForeignKey(Egg, on_delete=models.CASCADE, related_name='salereturnitem',null=True)
    saleReturnItemQuantity=models.CharField(max_length=15,null=True)
    saleReturnItemUnitPrice=models.CharField(max_length=15,null=True)
    saleReturnItemTotalAmount=models.CharField(max_length=15,null=True)
    saleReturnItemDiscount=models.CharField(max_length=15,null=True)
    saleReturnItemDiscountPrice=models.CharField(max_length=15,null=True)

and here i smy view function

def saleReturn(request):
    if not request.user.is_authenticated:
        return redirect('login')
    elif request.user.userRole != 'admin':
        return render(request, 'pages/404.html')
    else:
        if request.method == "POST":
            try:
                searchSaleInvoiceId = request.POST.get('searchSaleInvoice')
                searchSaleInvoice = SaleInvoice.objects.get(id=searchSaleInvoiceId)
                invoiceDateSaleReturn = request.POST.get('invoiceDateSaleReturn')

                saleReturnObject = SaleReturn(
                    user=request.user,
                    searchSaleInvoice=searchSaleInvoice,
                    invoiceDateSaleReturn=invoiceDateSaleReturn,
                )
                saleReturnObject.invoiceDateSaleReturn = date.today()
                saleReturnObject.save()

                saleReturnItemNameId = request.POST.get('saleReturnItemName')
                print("saleReturnItemNameId",saleReturnItemNameId)
                # saleReturnItem = Egg.objects.get(id=saleReturnItemNameId)
                # print("-----------------1----------------------")
               
                # saleReturnItemNameId = saleReturnItem.id

                saleReturnItemQuantity = request.POST.getlist('saleReturnItemQuantity')
                saleReturnItemUnitPrice = request.POST.getlist('saleReturnItemUnitPrice')
                saleReturnItemDiscount = request.POST.getlist('saleReturnItemDiscount')

                totalSaleAmountSaleReturn = 0.0
                saleInvoiceAmountSaleReturn = 0.0
                saleInvoiceDiscountSaleReturn = 0.0

                for quantity, price, discount,  in zip(
                    saleReturnItemQuantity, saleReturnItemUnitPrice, saleReturnItemDiscount
                ):
                    total_amount = int(quantity) * float(price)
                    if discount == '':
                        discount = 0.0
                    else:
                        discount = float(discount)
                    discounted_amount = total_amount - discount

                    # item_name = saleReturnItemNames.get(id=item_id)

                    saleReturnItemObject = SaleReturnItem(
                        salereturn=saleReturnObject,
                        saleReturnItemName_id=saleReturnItemNameId,
                        saleReturnItemQuantity=quantity,
                        saleReturnItemUnitPrice=price,
                        saleReturnItemTotalAmount=str(total_amount),
                        saleReturnItemDiscount=discount,
                        saleReturnItemDiscountPrice=str(discounted_amount)
                    )
                    saleReturnItemObject.save()

                    # Adding Item in Egg
                    Egg.objects.filter(id=item_name.saleInvoiceItemName.id).update(
                        eggStockQuantity=F('eggStockQuantity') + int(quantity)
                    )

                    totalSaleAmountSaleReturn += total_amount
                    saleInvoiceAmountSaleReturn += discounted_amount
                    saleInvoiceDiscountSaleReturn += discount

                saleReturnObject.totalSaleAmountSaleReturn = float(totalSaleAmountSaleReturn)
                saleReturnObject.saleInvoiceAmountSaleReturn = float(saleInvoiceAmountSaleReturn)
                saleReturnObject.saleInvoiceDiscountSaleReturn = float(saleInvoiceDiscountSaleReturn)
                saleReturnObject.save()

                messages.success(request, 'Record Saved Successfully.')
                return redirect('saleReturn')
            except Exception as e:
                messages.error(request, f'Some Error Occurred While Saving Data: {str(e)}')

        saleReturnData = SaleReturn.objects.all()
        results = SaleInvoice.objects.all()
        returnedItems = SaleInvoiceItem.objects.all()

        return render(request, 'pages/addSaleReturn.html', {'saleReturnData': saleReturnData, 'results': results, 'returnedItems': returnedItems})

I am printing message in termianl and it gave me this

saleReturnItemNameId None

here is my html code

<tbody class="table-border-bottom-0" id="item-table-body">                      
                        <tr class="item-row">                           
                            <td><h6 class="item-number"></h6></td>                           
                            <td>                          
                              <input type="text" for="saleReturnItemName" id="saleReturnItemNameId" name="saleReturnItemName" class="form-control item-name" placeholder="Search" style="height: 40px; width: 150px;"/>                                                                   
                              <!-- <input type="text" id="saleReturnItemNameId" name="saleReturnItemName" class="form-control item-name" placeholder="Search" style="height: 40px; width: 150px;"/>                                                                    -->
                          </td>
                                    <td>
                                        <input for="saleReturnItemQuantity" type="number" class="form-control item-quantity" id="saleReturnItemQuantityId" name="saleReturnItemQuantity" style="height: 40px; width: 150px;"/>
                                    </td>                 
                                    <td>
                                        <input type="string" class="form-control item-price" id="saleReturnItemUnitPriceId" name="saleReturnItemUnitPrice" />
                                       
                                    </td>
                                    <td>
                                        <input type="number" class="form-control item-total-amount" id="saleReturnItemTotalAmountId" name="saleReturnItemTotalAmount"/>
                                       
                                    </td>
                                    
                                    <td>
                                        <input type="number" class="form-control item-discount" id="saleReturnItemDiscountId" name="saleReturnItemDiscount" />
                                        
                                    </td>
                                    <td>
                                        <input type="number" class="form-control item-discounted-amount" id="saleReturnItemDiscountPriceId" name="saleReturnItemDiscountPrice"/>
                                        
                                    </td>                                   
                        </tr>
                        </tbody>