将数据分配给视图中的mdelset并将其保存时出现问题

Question

我正在尝试创建销售发票表格，在该表格中我使用的是model和modelformset，但是它给出了以下错误： NOT NULL约束失败：saleinvoice_saletransiction.transiction_date

我不确定问题出在哪里

def testCreate(request):
    form = Sale_Invoice_Main_Page
    modelformsets = Sale_Transction_formset

    if request.method == 'POST':
        forms = form(request.POST)
        formset = modelformsets(request.POST)
        if forms.is_valid() :
            forms.save(commit=True) and formset.save(commit=True)
            date = forms.invoice_date
            invoice = forms.invoice_no
            inv = Invoice_max.objects.get(invoice_name='sale')
            inv.invoice_no = invoice + 1
            inv.save()
            transiction_type = "sale"
            for set in formset:
                set.transiction_date = date
                set.invoice_no = invoice + 2
                set.transiction_type == transiction_type
                set.author = request.user.username
            forms.author = request.user.username
            forms.save()
            formset.save()

            return HttpResponseRedirect(reverse_lazy('saleinvoice:sale invoice home page'))
    else:
        forms = form(initial= { 'invoice_no' : sale_invoice.invoice_no + 8 ,
                            'invoice_date': datetime.now()})
        formset = modelformsets()
    return render(request, 'saleinvoice/test for model factory.html',{ "saleform" : forms,
                                                                       "saletransiction" : formset})


class Sale_Invoice_Main_Page(forms.ModelForm):
    class Meta:
        model = SaleInvoice
        fields = '__all__'
        exclude = ['created_at','updated_at','transiction_type','author']
        widgets = {'description' : forms.TextInput(attrs={ 'placeholder' : 'description'}),
                   'invoice_no' : forms.TextInput(attrs={ 'readonly' : 'True'}),
                   'total_amount' : forms.TextInput(attrs={ 'readonly' : 'True'}),
                   'invoice_date' : forms.DateInput(attrs={ 'class' : "vdate" }),
                   'due_date' : forms.DateInput(attrs={ 'readonly' : "True" }),
                    }



Sale_Transction_formset = modelformset_factory(SaleTransiction,
                                               fields=( 'description', 'price','quantity','total','item'),
                                               exclude= ('author','invoice_no','transiction_type','transiction_date'),
                                               extra=1,
                                               widgets={ 'description' : forms.TextInput(attrs={ 'placeholder' : 'optionall','class' : 'description'}),
                                                         'price' : forms.NumberInput(attrs={ 'readonly' : 'True', 'class' : 'rate'}),
                                                         'total' : forms.NumberInput(attrs={ 'readonly' : 'True', 'class' : 'total'}),
                                                         'quantity' : forms.NumberInput(attrs={'class' : 'quantity'}),
                                                         'item' : forms.Select(choices=Customer_data.objects.none().values_list('id','customer_Name'),attrs={ 'class' : "item_list"}),

                                                         },
                                               )


class SaleInvoice(models.Model):
    customer = models.ForeignKey(Customer_data , on_delete=models.CASCADE)
    invoice_date = models.DateField(null=True,blank=True)
    invoice_no = models.PositiveIntegerField(unique=True)
    due_date = models.DateField(blank=True,null=True)
    address = models.TextField()
    total_amount = models.PositiveIntegerField(null=True,blank=True)
    description = models.TextField(null=True,blank=True)
    transiction_type = models.CharField(max_length=50,blank=True)
    author = models.CharField(max_length=30)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.address


class SaleTransiction(models.Model):
    invoice_no = models.PositiveIntegerField(unique=True,null=True,blank=True)
    customer_transiction_name = models.CharField(max_length=30)
    transiction_date = models.DateField()
    item = models.CharField(max_length=100)
    description = models.TextField(null=True,blank=True)
    price = models.PositiveIntegerField()
    quantity = models.PositiveIntegerField()
    total = models.PositiveIntegerField()
    transiction_type = models.CharField(max_length=50,blank=True)
    author = models.CharField(max_length=30)
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)

    def __str__(self):
        return self.item

 <form method="post">
    {% csrf_token %}
     <div style="display: inline">
     {{ saleform.customer.label}}
     {{ saleform.customer }}{{ saleform.invoice_date.label }}{{ saleform.invoice_date}}{{ saleform.due_date.label }}
         {{ saleform.due_date }}<br>{{ saleform.invoice_no.label }}{{ saleform.invoice_no }}
     </div><br>
     {{ saleform.address.label }}<br>
     {{ saleform.address }}<br>
     {{ saleform.description }}<br>

     {{ saleform.errors }}
     {{ saletransiction.errors }}
     <div class="w3-row w3-padding-16">
         <table class="w3-table w3-border w3-striped" >
             <tr >
                 <th >Item</th>
                 <th>Description</th>
                 <th>Price</th>
                 <th>Quantity</th>
                 <th>Amount</th>
                 <th>Delete</th>
             </tr  >
             {{ saletransiction.management_form }}
             <div id="addrow">
                 {% for sale in saletransiction %}
                     <tr  class="forrow "  >
                         <td>{{ sale.item}}</td>
                         <td>{{ sale.description }}</td>
                         <td>{{ sale.price }}</td>
                         <td>{{ sale.quantity }}</td>
                         <td>{{ sale.total }}</td>
                         <td><button class="removerow">Remove</button> </td>
                     </tr>
                 {% endfor %}
             </div>

         </table>
     </div>
     {{ saleform.total_amount.label }}
     {{ saleform.total_amount }}<br>
    <input type="submit">
 </form>

我想找到我在代码中做错的地方，我认为我在做错事，但是我找不到错误的地方