尝试实现嵌套表单集的管理错误和 __init__ 错误

Question

我正在尝试使用 http://yergler.net/blog/2009/09/27/nested-formsets-with-django/ 添加嵌套内联

为 Django 1.4 使用这些自定义：

django inline formsets with a complex model for the nested form 和 https://groups.google.com/forum/#!topic/django-users/E1oL0khsUlI

但是，根据 form.nested 代码，我得到不同的错误。

要么：

[u'ManagementForm data is missing or has been tampered with']

或

__init__() got an unexpected keyword argument 'instance'

解释这一切的代码如下：

**forms.py ** 产生这个错误

__init__() got an unexpected keyword argument 'instance'

form.nested = [
         IndicatorValueFormSet(
              data=self.data or None,
              instance=instance,
              prefix = 'indicator_%s' % pk_value)]

IndicatorValueFormSet = modelformset_factory(IndicatorValue, extra=0)
IndicatorFormSet = inlineformset_factory(Disease, Indicator, formset=BaseIndicatorFormSet, extra=1)

下面的代码会产生这个错误：

[u'ManagementForm data is missing or has been tampered with']

form.nested = [
          IndicatorValueFormSet(
               queryset = IndicatorValue.objects.filter(relevantindicator = pk_value), 
               prefix = 'value_%s' % pk_value)]

IndicatorValueFormSet = modelformset_factory(IndicatorValue, extra=0)
IndicatorFormSet = inlineformset_factory(Disease, Indicator, formset=BaseIndicatorFormSet, extra=1)

models.py

class Disease(models.Model):
        disease = models.CharField(max_length=300, verbose_name="disease")


class Indicator(models.Model):
        relevantdisease = models.ForeignKey(Disease, verbose_name="disease")       
        indicator = models.CharField(max_length=300, verbose_name="indicator")

class IndicatorValue(models.Model):
        relevantindicator = models.ForeignKey(Indicator, verbose_name="indicators")
        indicator_value = models.CharField(max_length=50, verbose_name="indicator Values")

更新

HTML

 {{disease.management_form}}

 {{ indicators.management_form }}

{% for relevantindicator in indicators.forms %}

  {{ relevantindicator }}

  {% if relevantindicator.nested %}
  {% for formset in relevantindicator.nested %}
  {{ formset.as_table }}
  {% endfor %}
  {% endif %}

{% endfor %}

Answer 1

这是因为，Django 将数据添加到您的表单中，用于管理表单集。您需要包含它，因为您要手动呈现表单。

见：django modelformset_factory - management form data is missing

PS：一个简单的 Google 或 Stack Overflow 搜索就会得到你的答案。