想要归档什么<,python,django"/>

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首页 > 解决方案 > ValueError 无法分配“

  • 也欢迎您就如何设计回复模型提出任何建议。
  • 甚至如何更好地构建视图
  • 这些项目是通过一个表单集在一个父级下创建的

想要归档什么<

python - ValueError 无法分配“
  • 也欢迎您就如何设计回复模型提出任何建议。
  • 甚至如何更好地构建视图
  • 这些项目是通过一个表单集在一个父级下创建的

想要归档什么<

问题描述

  • 也欢迎您就如何设计回复模型提出任何建议。
  • 甚至如何更好地构建视图
  • 这些项目是通过一个表单集在一个父级下创建的

想要归档什么

  • unit_price, item_total_price 与单个项目相关联

  • delivery_charges、overall_total、subtotal 与所有商品模型相关联，

class RfqFullPrice(models.Model):
    sender = models.name = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="quote_sender")`
    receiver = models.name = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, related_name="quote_reciever")
    requestedquotation = models.ForeignKey(RequestForQuotation, related_name="replyprice_rfq", on_delete=models.CASCADE) 
    subtotal = MoneyField(max_digits=14, decimal_places=2, default_currency='USD', validators=[MinMoneyValidator(0)])
    delivery_charges = MoneyField(max_digits=14, decimal_places=2, default_currency='USD', validators=[MinMoneyValidator(0)])
    overall_total = MoneyField(max_digits=14, decimal_places=2, default_currency='USD', validators=[MinMoneyValidator(0)])
    validity_start_date = models.DateField()
    validity_end_date = models.DateField()

 class ReplyItemPrice(models.Model):
    full_price = models.ForeignKey(RfqFullPrice, on_delete=models.CASCADE, related_name='full_price')
    the_rfq = models.ForeignKey(RequestForQuotation, on_delete=models.CASCADE)
    item = models.ForeignKey(RequestForQuotationItem, on_delete=models.CASCADE, related_name="rfq_item")
    quantity = models.CharField(max_length = 200, help_text='Enter the qauntity')
    unit_price = MoneyField(max_digits=14, decimal_places=2, default_currency='USD', validators=[MinMoneyValidator(0)])
    item_total_price = MoneyField(max_digits=14, decimal_places=2, default_currency='USD', validators=[MinMoneyValidator(0)])  

def quote(request, pk):
    template_name = 'request_quote/send_quote.html'
    requestedquotation = get_object_or_404(RequestForQuotation, pk=pk)
    items = RequestForQuotationItem.objects.filter(item=requestedquotation)

if request.method == 'GET':
    full_priceform =QuoteFullPriceForm()
    item_priceform = QuoteItemPriceForm()

elif request.method == 'POST':
    full_priceform =QuoteFullPriceForm(request.POST, request.FILES)
    item_priceform = QuoteItemPriceForm(request.POST, request.FILES)

    if full_priceform.is_valid() and item_priceform.is_valid():
        full_priceform = full_priceform.save(commit=False)
        full_priceform.receiver = requestedquotation.sender
        full_priceform.sender = request.user
        full_priceform.requestedquotation = requestedquotation
        full_priceform.save()

        for form in item_priceform:
            form = item_priceform.save(commit=False)
            form.full_price = full_priceform
            form.the_rfq = requestedquotation
            form.item = items
            form.save()

        messages.success(request, 'Uploaded'\
                                  'successfully')

        return redirect('/')

    else:
        messages.error(request, 'Error While Uploading')     

context = {
    'full_priceform':full_priceform,
    'item_priceform':item_priceform,
    'requestedquotation':requestedquotation,
    'items':items,

}

return render(request, template_name, context)


                            <form class="form-horizontal" method="POST" action="{% url 'rfq:quote' requestedquotation.pk %}" enctype="multipart/form-data">
                                    {% csrf_token %}

                                {% for item in items %}
                                <tr>
                                    <td align="center"><span class="badge badge-primary">#{{ item.pk }}</span></td>
                                    <td align="center">{{ item.name }}</td>
                                    <td align="center">{{ item.discription|safe|linebreaksbr }}</td>
                                    <td align="center"><img src="{% if item.image %} {{ item.image.url }} {% else %} {% static 'img/default.jpg' %} {% endif %}" alt="..." height="150" width="150"></td>
                                    <td align="center">{{ item.quantity }}</td>
                                    <td align="center">{{ item_priceform }}</td>
                                </tr>
                                {% endfor %}
                        </tbody>
                    </table>
                    {{ full_priceform.subtotal }} 
                    {{ full_priceform.delivery_charges }} 
                    {{ full_priceform.overall_total }} 
                    {{ full_priceform.validity_start_date }} 
                    {{ full_priceform.validity_end_date }} 
                    <button type="submit" class="btn btn-success mb-2">Submit</button>
                    </form>

您可能会通过使用反射遍历结构字段来以艰难的方式执行此操作，获取标签并解析它们，除非您需要一些自定义，否则不建议这样做。

或者您可能喜欢使用可用的验证器包： https ://github.com/dealancer/validate



    package main

    import (
        "encoding/json"
        "fmt"
        "gopkg.in/dealancer/validate.v2"
    )

    type Config struct {
        Name       string   `yaml:"name"    json:"name"     validate:"empty=false"`
    }

    func main() {
        var myConfig Config

        var rawConfig = []byte(`{}`)  // Empty, Nothing getting passed.

        err := json.Unmarshal(rawConfig, &myConfig)
        if err != nil {
            panic(err)
        }
        err = validate.Validate(myConfig)
        if err != nil {
            panic(err)
        }
        fmt.Printf("Name = %s\n", myConfig.Name)
    }

标签： pythondjango

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