Django 是否根据表单输入更新已清除的数据？
我试图调整从modelform获得的数据，以便根据用户输入将某些值保存到模型中。这些输入可能差异很大，请参见下面的模型以及表单和视图 我应该在模型表单中调用模型方法，还是应该在模型表单本身中进行所有计算。数字可能会根据所选合同和所选开始日期而变化，因为它将计算天数并基于合同的此价格，但是如果是半天，则只需将数字除以2即可 我还是Django的新手，但我试图找出所有这些信息应该放在哪里，对此我毫无头绪，而是试图通过真实逼真的应用程序来学习Django，所以感谢您的帮助 型号Django 是否根据表单输入更新已清除的数据？,django,validation,django-forms,Django,Validation,Django Forms,我试图调整从modelform获得的数据，以便根据用户输入将某些值保存到模型中。这些输入可能差异很大，请参见下面的模型以及表单和视图 我应该在模型表单中调用模型方法，还是应该在模型表单本身中进行所有计算。数字可能会根据所选合同和所选开始日期而变化，因为它将计算天数并基于合同的此价格，但是如果是半天，则只需将数字除以2即可 我还是Django的新手，但我试图找出所有这些信息应该放在哪里，对此我毫无头绪，而是试图通过真实逼真的应用程序来学习Django，所以感谢您的帮助 型号 class Admin
class AdminData(models.Model):
year1 = models.IntegerField()
year3 = models.IntegerField()
year1_fortnight = models.IntegerField()
year3_fortnight = models.IntegerField()
@property
def fortnight_dayrate_year1(self):
return self.year1_fortnight / weeksinyear / 5
@property
def fortnight_dayrate_year3(self):
return self.year3_fortnight / weeksinyear / 5
@property
def day_rate_year1(self):
return self.year1 / weeksinyear / 5
@property
def day_rate_year3(self):
return self.year3 / weeksinyear / 5
class Price(models.Model):
year_choice = Choices('1-Year Weekly', '3-Year Weekly','1-Year Fortnightly', '3-Year Fortnightly')
day_choice = Choices('Full Day', 'Half Day')
name = models.CharField(max_length=100)
contract = StatusField(choices_name='year_choice')
time_daily = StatusField(choices_name='day_choice')
start_date = models.DateField(default=datetime.now)
end_date = models.DateField(default=datetime(2021,3,31))
weeksinyear = 52
hours = 6.5
epoch_year = date.today().year
year_start = date(epoch_year, 1, 4)
year_end = date(epoch_year, 3, 31)
@property
def day_count(self):
return year_end - self.start_date
# @property
# def price_year1_weekly(self):
# if self.contract == self.year_choice[0]
# return AdminData.year1 * self.day_count
def __str__(self):
return self.name
class PriceForm(forms.ModelForm):
class Meta:
model = Price
fields = ['name', 'contract','time_daily','start_date']
def price_detail(request):
if request.method == 'POST':
form = PriceForm(request.POST)
if form.is_valid():
price_instance = form.cleaned_data
form.save()
return render(request,'confirmation.html',{'form_data': price_instance})
else:
form = PriceForm()
return render(request, 'main.html', {'form': form})
def price_detail(request):
form = PriceForm(request.POST or None)
if form.is_valid():
price_instance = form.save() // this returns a saved instance
... do calculations here ...
price_instance.calculated_field = 1 + 1 // example calculations
price_instance.confirmed = False // consider adding a confirmed boolean, to not allow users to alter the data in the next step.
price_instance.save()
return render(request, 'confirmation.html', {'price_instance': price_instance})
else:
return render(request, 'main.html', {'form': form})
class Price(models.Model):
year_choice = Choices('1-Year Weekly', '3-Year Weekly','1-Year Fortnightly', '3-Year Fortnightly')
day_choice = Choices('Full Day', 'Half Day')
name = models.CharField(max_length=100)
contract = StatusField(choices_name='year_choice')
time_daily = StatusField(choices_name='day_choice')
start_date = models.DateField(default=datetime.now)
end_date = models.DateField(default=datetime(2021,3,31))
weeksinyear = 52
hours = 6.5
epoch_year = date.today().year
year_start = date(epoch_year, 1, 4)
year_end = date(epoch_year, 3, 31)
@property
def day_count(self):
return year_end - self.start_date
def save(self, *args, **kwargs):
... do calculations here ...
self.calculated_field = 1 + 1 // calculations
super().save(*args, **kwargs)
def __str__(self):
return self.name
class PriceForm(forms.ModelForm):
class Meta:
model = Price
fields = ['name', 'contract','time_daily','start_date']
def price_detail(request):
if request.method == 'POST':
form = PriceForm(request.POST)
if form.is_valid():
price_instance = form.cleaned_data
form.save()
return render(request,'confirmation.html',{'form_data': price_instance})
else:
form = PriceForm()
return render(request, 'main.html', {'form': form})
def price_detail(request):
form = PriceForm(request.POST or None)
if form.is_valid():
price_instance = form.save() // this returns a saved instance
... do calculations here ...
price_instance.calculated_field = 1 + 1 // example calculations
price_instance.confirmed = False // consider adding a confirmed boolean, to not allow users to alter the data in the next step.
price_instance.save()
return render(request, 'confirmation.html', {'price_instance': price_instance})
else:
return render(request, 'main.html', {'form': form})
class Price(models.Model):
year_choice = Choices('1-Year Weekly', '3-Year Weekly','1-Year Fortnightly', '3-Year Fortnightly')
day_choice = Choices('Full Day', 'Half Day')
name = models.CharField(max_length=100)
contract = StatusField(choices_name='year_choice')
time_daily = StatusField(choices_name='day_choice')
start_date = models.DateField(default=datetime.now)
end_date = models.DateField(default=datetime(2021,3,31))
weeksinyear = 52
hours = 6.5
epoch_year = date.today().year
year_start = date(epoch_year, 1, 4)
year_end = date(epoch_year, 3, 31)
@property
def day_count(self):
return year_end - self.start_date
def save(self, *args, **kwargs):
... do calculations here ...
self.calculated_field = 1 + 1 // calculations
super().save(*args, **kwargs)
def __str__(self):
return self.name
因为在交易计算时，views.py是一个很好的地方，即购买，此时价格已达成一致，永远不会改变 如果业务逻辑要求数据更新事务，那么模型更好 视图.py
class PriceForm(forms.ModelForm):
class Meta:
model = Price
fields = ['name', 'contract','time_daily','start_date']
def price_detail(request):
if request.method == 'POST':
form = PriceForm(request.POST)
if form.is_valid():
price_instance = form.cleaned_data
form.save()
return render(request,'confirmation.html',{'form_data': price_instance})
else:
form = PriceForm()
return render(request, 'main.html', {'form': form})
def price_detail(request):
form = PriceForm(request.POST or None)
if form.is_valid():
price_instance = form.save() // this returns a saved instance
... do calculations here ...
price_instance.calculated_field = 1 + 1 // example calculations
price_instance.confirmed = False // consider adding a confirmed boolean, to not allow users to alter the data in the next step.
price_instance.save()
return render(request, 'confirmation.html', {'price_instance': price_instance})
else:
return render(request, 'main.html', {'form': form})
class Price(models.Model):
year_choice = Choices('1-Year Weekly', '3-Year Weekly','1-Year Fortnightly', '3-Year Fortnightly')
day_choice = Choices('Full Day', 'Half Day')
name = models.CharField(max_length=100)
contract = StatusField(choices_name='year_choice')
time_daily = StatusField(choices_name='day_choice')
start_date = models.DateField(default=datetime.now)
end_date = models.DateField(default=datetime(2021,3,31))
weeksinyear = 52
hours = 6.5
epoch_year = date.today().year
year_start = date(epoch_year, 1, 4)
year_end = date(epoch_year, 3, 31)
@property
def day_count(self):
return year_end - self.start_date
def save(self, *args, **kwargs):
... do calculations here ...
self.calculated_field = 1 + 1 // calculations
super().save(*args, **kwargs)
def __str__(self):
return self.name
save（）class PriceForm(forms.ModelForm):
class Meta:
model = Price
fields = ['name', 'contract','time_daily','start_date']
def price_detail(request):
if request.method == 'POST':
form = PriceForm(request.POST)
if form.is_valid():
price_instance = form.cleaned_data
form.save()
return render(request,'confirmation.html',{'form_data': price_instance})
else:
form = PriceForm()
return render(request, 'main.html', {'form': form})
def price_detail(request):
form = PriceForm(request.POST or None)
if form.is_valid():
price_instance = form.save() // this returns a saved instance
... do calculations here ...
price_instance.calculated_field = 1 + 1 // example calculations
price_instance.confirmed = False // consider adding a confirmed boolean, to not allow users to alter the data in the next step.
price_instance.save()
return render(request, 'confirmation.html', {'price_instance': price_instance})
else:
return render(request, 'main.html', {'form': form})
class Price(models.Model):
year_choice = Choices('1-Year Weekly', '3-Year Weekly','1-Year Fortnightly', '3-Year Fortnightly')
day_choice = Choices('Full Day', 'Half Day')
name = models.CharField(max_length=100)
contract = StatusField(choices_name='year_choice')
time_daily = StatusField(choices_name='day_choice')
start_date = models.DateField(default=datetime.now)
end_date = models.DateField(default=datetime(2021,3,31))
weeksinyear = 52
hours = 6.5
epoch_year = date.today().year
year_start = date(epoch_year, 1, 4)
year_end = date(epoch_year, 3, 31)
@property
def day_count(self):
return year_end - self.start_date
def save(self, *args, **kwargs):
... do calculations here ...
self.calculated_field = 1 + 1 // calculations
super().save(*args, **kwargs)
def __str__(self):
return self.name
提交表单后价格是否可能更改，或者交易是否锁定了价格数据？我希望价格可以更改，我将在将来向用户锁定价格，但不知道我将如何做到这一点。还没有做到这一点：）这样他们可以在以后更新他们的定价。我如何在模型中显示这一点？模型是使用JavaScript触发的，通常附加到submit按钮，用于在模型中而不是视图中进行计算？哦，sry，是的，如果你想显示它，模型和属性方法非常适合。如果要冻结结果，请重写save方法。请记住，每次更新实例时，重写save方法都会重新运行该方法。这可能不是您想要的，因为事务数据将被重新计算，并且可能会更改存储的值。