無法保存複選框數據

Question

我真的很累我直到現在還沒有找到任何解決方案。我試圖創建一個表來查看用戶保存的所有數據。問題是models.py中的所有輸入都保存在排除帶有複選框的參數中。我不知道是什麼問題。 models.py中的所有參數都保存在數據庫中。

這是我Models.py：

class Parameters(models.Model): 

user  = models.ForeignKey(User) 
title  = models.CharField('title', max_length=100, default='', blank=True, help_text='Use an indicative name, related to the chosen parameters') 
type = models.CharField('forecast type', choices=FORECAST_TYPES, max_length=20, default="backtest") 

#input characteristics 
price_1_min    = models.FloatField('1. Price, min', default=0.1, validators=[MinValueValidator(0.1), MaxValueValidator(20000)]) 
price_1_max    = models.FloatField('1. Price, max', default=20000, validators=[MinValueValidator(0.1), MaxValueValidator(20000)]) 
stocks_num_2_min   = models.IntegerField('2. Number of selected stock, min', default=3, validators=[MinValueValidator(0), MaxValueValidator(100)]) 
stocks_num_2_max   = models.IntegerField('2. Number of selected stock, max', default=7, validators=[MinValueValidator(1),]) 
limit_3     = models.FloatField('3. Last price to upper straight, %', default=20, validators=[MinValueValidator(-200),]) 
learning_days_4_min   = models.IntegerField('4. Number of Learning days, min', default=1, validators=[MinValueValidator(1),MaxValueValidator(30)]) 
learning_days_4_max   = models.IntegerField('4. Number of Learning days, max', default=10, validators=[MinValueValidator(1),MaxValueValidator(30)]) 
evaluation_days_5   = models.IntegerField('5. Number of Evaluation days', default=10, validators=[MinValueValidator(1),MaxValueValidator(10)]) 
delay_days_6    = models.IntegerField('6. Number of 「no quarterly reports」 days (N)', default=10, validators=[MinValueValidator(0),MaxValueValidator(20)]) 
minimum_gain_7    = models.FloatField('7. Minimum gains for winners', default=0, validators=[MinValueValidator(0),MaxValueValidator(100)]) 
minimum_loss_8    = models.FloatField('8. Minimum losses for losers', default=0, validators=[MinValueValidator(-100),MaxValueValidator(0)]) 
total_gain_min_9   = models.FloatField('9. Minimum total gain', default=0, validators=[MinValueValidator(0),MaxValueValidator(100)]) 
winning_stock_percentage_min_10  = models.FloatField('10. Minimum percentage of winning stocks', default=60, validators=[MinValueValidator(0),MaxValueValidator(100)]) 


#input characteristics 
period_start  = models.DateField('period, start', default=datetime.date(2013, 9, 25)) 
period_end  = models.DateField('end', default=datetime.datetime.today().date() - datetime.timedelta(days=16)) 
inital_capital  = models.IntegerField('Total initial capital, USD', default=100000, validators=[MinValueValidator(10000),]) 
fraction_to_invest = models.FloatField('Percentage of the available capital to (re)invest', default=50, validators=[MinValueValidator(10), MaxValueValidator(90)]) 
minimum_cash  = models.IntegerField('Minimum cash to invest, %', default=5, validators=[MinValueValidator(1), MaxValueValidator(50)]) 
trades_fees   = models.FloatField('Trade fees, USD', default=8, validators=[MinValueValidator(0),]) 
stop_loss  = models.FloatField('Stop-Loss, %', default=-2, validators=[MinValueValidator(-50), MaxValueValidator(-1)]) 
target_gain  = models.FloatField('Target gain, %', default=5, validators=[MinValueValidator(1),]) 

created_at = models.DateTimeField(u'created', auto_now_add=True) 
updated_at = models.DateTimeField(u'updated', auto_now=True) 

這是forms.py：所有選擇題領域的投入是空後保存

class BacktestForm(forms.ModelForm): 

period_start = forms.DateField(initial=datetime.datetime.today().date() - datetime.timedelta(days=365+16), widget=forms.widgets.DateInput(format="%Y/%m/%d"), input_formats=["%Y/%m/%d"]) 
period_end = forms.DateField(initial=datetime.datetime.today().date() - datetime.timedelta(days=16), widget=forms.widgets.DateInput(format="%Y/%m/%d"), input_formats=["%Y/%m/%d"]) 

    market = forms.MultipleChoiceField(required=False,widget=CheckboxSelectMultiple, choices=MARKET_CHOICES) 
    sector = forms.MultipleChoiceField(required=False,widget=CheckboxSelectMultiple, choices= MEDIA_CHOICES) 
class Meta: 
    model = Parameters 
    exclude = [ 
     'user', 
     'type', 
     'created_at', 
     'updated_at', 
     ] 
    widgets={ 
     'title': forms.TextInput(attrs={'placeholder':'for ex. highLimitLowPrice'}), 
     } 

保存view.py的功能：

def backtest(request, pk=None): 

if pk is not None: 
    param = get_object_or_404(Parameters, pk=pk, user=request.user) 
    form = BacktestForm(request.POST or None, instance=param) 
else: 
    form = BacktestForm(request.POST or None) 

    if request.method == 'POST': 
    if form.is_valid(): 
     if 'save' in request.POST: 
      obj = form.save(commit= False) 


      obj.user = request.user 
      obj.type = "backtest" 

      obj.save() 
      messages.info(request, 'Saved!') 
      return redirect(obj.get_backtest_url()) 

        else: 
          messages.info(request, 'Please check entered data') 
       data = { 
      'active_page': 'backtest', 
      'form': form,} 

Answer 1

在models.py

class Parameters(models.Model): 
    ... 
    MARKET = (
    (1,'First'), 
    (2,'Second') 
    ) 
    SECTOR= (
    (1,'First'), 
    (2,'Second') 
    ) 
    market = models.CharField('Market', max_length=30, null=True) 
    sector= models.CharField('Sector', max_length=30, null=True) 

    def display_sector_label(self) 
     sectors= [(str(dict(self.SECTOR)[value])) for value in self.sector] 
     return ", ".join(sectors) 

    def display_market_label(self) 
     markets = [(str(dict(self.MARKET)[value])) for value in self.market] 
     return ", ".join(markets) 

在forms.py

class BacktestForm(forms.ModelForm): 
    market = forms.MultipleChoiceField(
     label='Market', 
     choices=Parameters.MARKET, 
     widget=forms.CheckboxSelectMultiple 
    ) 
    sector = forms.MultipleChoiceField(
     label='Sector', 
     choices=Parameters.SECTOR, 
     widget=forms.CheckboxSelectMultiple 
    )