表单仅在单击提交按钮后显示

Question

我已经检查了有关根本没有显示的表单的类似帖子，并且我已经尝试应用修复程序，但它并没有为我修复它。我有以下几点：

股票.html：

<form method="post" class="form-inline my-2 my-lg-0">

  {% csrf_token %}

  {{ symbol_form }}

  <button class="btn btn-secondary my-2 my-sm-0" type="submit">Add Stock</button>

</form>

视图.py：

class PortfolioStockListView(ListView):

    model = StockPortfolio

    template_name = 'stocks.html'

    def post(self, request):

        symbol_form = StockSymbolForm(request.POST)

        if request.method == 'POST':

            if symbol_form.is_valid():

                model_instance = symbol_form.save(commit=False)

                model_instance.timestamp = timezone.now()

                model_instance.save()

                return redirect('/')    

            else:

                return render(request, 'stocks.html', {'symbol_form': symbol_form})

        else:

            symbol_form = StockSymbolForm()

            return render(request, 'stocks.html', {'symbol_form': symbol_form})

形式.py：

class StockSymbolForm(ModelForm):

    class Meta:

        model = StockPortfolio

        fields = ['username', 'stock_symbol' , 'stock_qty']

模型.py：

class StockPortfolioUser(models.Model):

    username = models.OneToOneField(User, on_delete=models.CASCADE)

    usercash = models.PositiveIntegerField(default=100000)

class StockPortfolio(models.Model):

    username = models.ForeignKey(StockPortfolioUser, on_delete=models.CASCADE)

    stock_symbol = models.CharField(max_length=5)

    stock_qty = models.PositiveIntegerField(default=0)

如何解决导致表单隐藏直到单击按钮的问题？如有必要，我可以从其他文件共享更多代码。

Answer 1

将其传递给您的模板覆盖get_context_data方法class PortfolioStockListView(ListView):&nbsp; &nbsp; model = StockPortfolio&nbsp; &nbsp; template_name = 'stocks.html'&nbsp; &nbsp; def get_context_data(self, *, object_list=None, **kwargs):&nbsp; &nbsp; &nbsp; &nbsp; context = super(PortfolioStockListView, self).get_context_data(object_list=object_list, **kwargs)&nbsp; &nbsp; &nbsp; &nbsp; context['symbol_form'] = StockSymbolForm()&nbsp; &nbsp; &nbsp; &nbsp; return context&nbsp; &nbsp; def post(self, request):&nbsp; &nbsp; &nbsp; &nbsp; ...