AttributeError at /invoice/add_invoice/ 'int' object has no attribute '_meta' while using in_bulk

[Kiran Chavan]

I want to convert the model instances into a JSON object and then pass it 
to the HTML file. However, I get an AttributeError at this line:
`data = serializers.serialize("json", Inventory.objects.in_bulk())`

The full `views.py`:

def add_invoice(request):
  form = InvoiceForm(request.POST or None)
  data = serializers.serialize("json", Inventory.objects.in_bulk())
  total_invoices = Invoice.objects.count()
  queryset = Invoice.objects.order_by('-invoice_date')[:6]

  if form.is_valid():
form.save()
messages.success(request, 'Successfully Saved')
return redirect('/invoice/list_invoice')
  context = {
"form": form,
"title": "New Invoice",
"total_invoices": total_invoices,
"queryset": queryset,
"data": data,
  }
return render(request, "entry.html", context)

The Javascript code:

{{ data|json_script:"hello-data" }}

const data = 
JSON.parse(document.getElementById('hello-data').textContent);

document.getElementById('id_line_one').onchange = function(event){
document.getElementById('id_line_one_unit_price').value = 
data[event.target.value].fields.amount;
};



`models.py`:



class Inventory(models.Model):
  product_number = models.IntegerField(primary_key=True)
  product = models.TextField(max_length=3000, default='', blank=True, 
null=True)
  title = models.CharField('Title', max_length=120, default='', 
blank=True, unique=True)
  amount = models.IntegerField('Unit Price', default=0, blank=True, 
null=True)
  
  def __str__(self):
return self.title

How can I pass that JSON object and assign the amount value to the text 
field according to the object selected in the dropdown? Thanks
[image: Screenshot 2022-07-09 232808.jpg]

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Uncaught TypeError: data.find is not a function

[Kiran Chavan]

I am trying to convert the model instances into a JSON object and then 
according to the value selected in the dropdown menu, I want to assign its 
amount to the `line_one_unit_price` text field in the form.

Javascript code:

{{ data|json_script:"hello-data" }}

const data = 
JSON.parse(document.getElementById('hello-data').textContent);

document.getElementById('id_line_one').onchange = function(event){
let elementInData = data.find(() => item.pk == event.target.value);
document.getElementById('id_line_one_unit_price').value = 
elementInData && elementInData.amount ? elementInData.amount : 0;
};



I guess, I am getting the error at `data.find` because `.find` is used on 
an array whereas the constant `data` is not an array? How do I convert that 
JSON object into an array? how do I assign the amount of the `title` 
selected in the forms to the `line_one_unit_price`?

[image: Screenshot 2022-07-09 232808.jpg]

When I click some title from the dropdown, I want the amount to be 
displayed in the `Unit Price`.

`views.py`:

def add_invoice(request):
  form = InvoiceForm(request.POST or None)
  data = serializers.serialize("json", Inventory.objects.all())
  total_invoices = Invoice.objects.count()
  queryset = Invoice.objects.order_by('-invoice_date')[:6]

  if form.is_valid():
form.save()
messages.success(request, 'Successfully Saved')
return redirect('/invoice/list_invoice')
  context = {
"form": form,
"title": "New Invoice",
"total_invoices": total_invoices,
"queryset": queryset,
"data": data,
  }
  return render(request, "entry.html", context)

`models.py`:

class Inventory(models.Model):
  product_number = models.IntegerField(primary_key=True)
  product = models.TextField(max_length=3000, default='', blank=True, 
null=True)
  title = models.CharField('Title', max_length=120, default='', 
blank=True, unique=True)
  amount = models.IntegerField('Unit Price', default=0, blank=True, 
null=True)

  def __str__(self):
return self.title

Thanks.

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