This is Error showing

TypeError at /page
Field 'mobile' expected a number but got ['22222', '3333'].
Request Method: POST
Request URL:    http://127.0.0.1:8000/page
Django Version: 4.1
Exception Type: TypeError
Exception Value:    
Field 'mobile' expected a number but got ['22222', '3333'].

While Submitting Form This error occurs.
I am trying to submit form of same name twice simultaneously to same model

Views.py

def page(request):

    if request.method == 'POST':
        description = request.POST['description']
        price = request.POST['price']
        name = request.POST.getlist('name')
        mobile = request.POST.getlist('mobile')

        pay = bill(description=description,price=price)
        pay.save()

        
        mypayee = payee(billId=pay,name=name,mobile=mobile)
        mypayee.save()

    return render(request, 'split_app/page.html')

this model

from django.db import models

# Create your models here.
class bill(models.Model):
    price = models.IntegerField()
    description = models.CharField(max_length=200)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.description
        
class payee(models.Model):
    billId = models.ForeignKey(bill,on_delete=models.CASCADE,related_name='persons')
    name = models.CharField(max_length=50)
    mobile = models.IntegerField()

this is image of HTML FORM generated using javascript
enter image description here

** This is how I am submitting data with form having same form twice of same name(name & mobile) **

HTML generate

<div class="container my-3">
        <button type="button" class="btn btn-secondary">ADD NEW BILL</button>
        <form action="/page" method="POST">
            {% csrf_token %}
            <div class="input-group mb-3">
                <label for="discription" class="col-sm-2 col-form-label">DESCRIPTION:</label>
                <div class="col-sm-2">
                    <input type="text" name="description" id="discription" placeholder="Bill For.." />
                </div>
            </div>
            <div class="input-group mb-3">
                <label for="price" class="col-sm-2 col-form-label">BILL PRICE:</label>
                <div class="col-sm-2">
                    <input type="number" name="price" id="price" title="only numbers allowed"
                        placeholder="&#x20B9" />
                </div>
            </div>
            <div class="mb-3 row">
                <label for="person" class="col-sm-2 col-form-label">SPLIT IN:</label>
                <div class="col-sm-10">

                    <button type="button" class="btn btn-info" onclick="increment()">+</button>
                    <button type="button" class="btn btn-info" id="payeesbtn">ADD PAYEE:</button>
                    <button type="button" class="btn btn-info" onclick="decrement()">-</button>

                    <div class="container my-3" id="addpayees"></div>
                    
                </div>
            </div>
            <button type="submit" class="btn btn-info">Save</button>
        </form>
    </div>

Javascript

let x = 1;
function increment() {
        
    const div = document.createElement('div');
    div.className = 'container my-3';
    div.idName = 'x';

    
    div.innerHTML = `<h5>payee ${x}</h5>
                        <table>
                            <tr>
                                <th>Name:</th>
                                <td><input type="text" name="name"></td>
                            </tr>
                            <tr>
                                <th>Mobile:</th>
                                <td><input type="number" name="mobile"></td>
                            </tr>
                        </table>
                        <input type="button" value="-" onclick="decrement(this)" />
                        <button type="button" class="btn btn-info" onclick="decrement(this)">-</button>`;

    document.getElementById("addpayees").appendChild(div);
      
    x++;
};

>Solution :

The payee.mobile field is defined as an IntegerField, but in your view function you are calling

mobile = request.POST.getlist('mobile')

which produces a list of values. Then you do this:

mypayee = payee(billId=pay,name=name,mobile=mobile)

That is what the error tells you. You are trying to create a payee instance and assign a list to the integer field.

PS:

If you want to create two separate instances of payee with both those values ['22222', '3333'], you need to do something like

mypayee1 = payee(billId=pay,name=int(name[0]),mobile=int(mobile[0]))
mypayee2 = payee(billId=pay,name=int(name[1]),mobile=int(mobile[1]))

But I am just guessing here.