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我将 django-pyodbc-azure 与 mssql 一起使用，并且在我的 models.py 中将一些字段设置为外键：

class Production(models.Model):
    date = models.CharField(max_length=10, null=True)
    dateGr = models.DateField(auto_now=False, auto_now_add=False, null=True)
    comName = models.CharField(max_length=100, null=True)
    comId = models.ForeignKey(Company, on_delete=models.CASCADE, null=True)
    prodName = models.CharField(max_length=100, null=True)
    prodId = models.ForeignKey(Product, on_delete=models.CASCADE, null=True)
    gradeId = models.ForeignKey(ProductGrade, on_delete=models.CASCADE, null=True)
    gradeName = models.CharField(max_length=100, null=True)
    gradeType = models.CharField(max_length=3, null=True)
    gradeTypeId = models.ForeignKey(GradeType, on_delete=models.CASCADE, null=True)
    qty = models.FloatField(null=True)
    cap = models.FloatField(null=True)
    designCap = models.FloatField(null=True)
    plan = models.FloatField(null=True)
    unitId = models.ForeignKey(QtyUnit, on_delete=models.CASCADE, null=True)
    unit = models.CharField(max_length=20, null=True)

我已经像这样写了我的 forms.py ：

class CreateProduction(forms.ModelForm):
    class Meta:
        model = Production
        fields = ['date', 'comId', 'prodId', 'gradeId', 'gradeTypeId', 'unitId', 'qty']
        
        widgets = {
        'date': forms.TextInput(attrs={'class': 'form-control', 'name': 'tdate', 'id': 'input-tdate'}),
        'comId': forms.Select(attrs={'class': 'form-control'}),
        'prodId': forms.Select(attrs={'class': "form-control"}),
        'gradeId': forms.Select(attrs={'class': 'form-control'}),
        'gradeTypeId': forms.Select(attrs={'class': 'form-control'}),
        'unitId': forms.Select(attrs={'class': 'form-control'}),
        'qty': forms.NumberInput(attrs={'class': 'form-control', 'id': 'qty', 'type': 'number', 'value': '0'}),     
        }

    def __init__(self, user, comId, *args, **kwargs):
        super(CreateProduction, self).__init__(*args, **kwargs)
        self.fields['comId'].queryset = Company.objects.filter(userId=user)
        self.fields['prodId'].queryset = Product.objects.filter(comId=comId)
        products = Product.objects.filter(comId=comId)
        self.fields['gradeId'].queryset = ProductGrade.objects.filter(prodId__in=products)

处理将我的表单数据保存到数据库的函数如下：

@login_required(login_url='login')
@allowed_users(allowed_roles=['editor'])
def create_production(request):
    print(request)
    if request.method == 'POST':
        comId = Company.objects.values_list('id', flat=True).get(userId=request.user)
        form = CreateProduction(request.user, comId, request.POST)    
        if form.is_valid():
            production = form.save(commit=False)
            print(request.POST)
            production.user = request.user
            production.save()
            return redirect('/')
    else:
        comId = Company.objects.values_list('id', flat=True).get(userId=request.user)
        form = CreateProduction(request.user, comId)
    return render(request, 'production/production_form.html', {'form': form})

当我从 forms.py 和模板中删除与“unitId”相关的行时，整个代码工作得非常好，并且数据被插入到数据库中。但是当我添加与“unitId”相关的行时，我收到此错误：（'42000'，'[42000] [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Error convert data type nvarchar to numeric.（8114 ) (SQLExecDirectW)') 我不明白“unitId”字段有什么问题

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1 回答 1

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所以问题是日期的值，因为我的项目的日期是波斯语我必须在我的模型中将日期字段定义为 CharField 并且因为日期的值在波斯语数据库中因为它是 Unicode 而不接受该值所以我添加了一个我的views.py中的行如下：

production.date = unidecode(str(request.POST.get('date')))

这修复了错误。

于 2020-08-31T09:43:00.900 回答