django inlineformset_factory 额外属性被忽略？
我正在尝试渲染内联表单集，但“额外”属性似乎被忽略。考虑以下模型：
class Foo_model(models.Model):
fooName = models.CharField(max_length=LIL_STRING)
bars = models.ForeignKey("Bar_model")
class Bar_model(models.Model):
barName = models.CharField(max_length=LIL_STRING)
forms:
class Foo_form(ModelForm):
class Meta:
model = Foo_model
class Bar_form(ModelForm):
class Meta:
model = Bar_model
Bar_formset = inlineformset_factory(Foo_model,Bar_model,formset=Bar_form,extra=23)
view:
def ViewFoo(request, model_id=False):
if model_id:
model = Foo_model.objects.get(pk=model_id)
else:
model = Foo_model()
form = Foo_form(instance=model)
formset = Bar_formset(instance=model)
return render_to_response('form.html', {'form' : form, 'formset' : formset }, context_instance=RequestContext(request))
和 template:
<html>
<form method="POST" action="">
{% csrf_token %}
<div>
{{ form }}
{{ formset }}
</div>
<input class="button" type="submit" value="Submit"/>
</form>
</html>
这仅显示 Bar_form 的一个实例，而它应该显示 23 ("extra=23")。有什么想法我做错了吗？
谢谢
更新：
事实证明，部分问题是我的所有模型类都继承自同一个基类。如果我让它们只是从 models.Model 继承，那么问题就会消失（尽管其他问题会出现）。我仍然希望它们从单个类继承，所以我原来的问题仍然存在。
更新更新：
使我的模型的基类抽象：
class BaseClass(models.Model):
class Meta:
abstract = True
似乎可以解决问题。我现在可以在我的类之间拥有外键和多对多字段。
I am trying to render an inlineformset but the "extra" attribute seems to be ignored. Consider the following models:
class Foo_model(models.Model):
fooName = models.CharField(max_length=LIL_STRING)
bars = models.ForeignKey("Bar_model")
class Bar_model(models.Model):
barName = models.CharField(max_length=LIL_STRING)
forms:
class Foo_form(ModelForm):
class Meta:
model = Foo_model
class Bar_form(ModelForm):
class Meta:
model = Bar_model
Bar_formset = inlineformset_factory(Foo_model,Bar_model,formset=Bar_form,extra=23)
view:
def ViewFoo(request, model_id=False):
if model_id:
model = Foo_model.objects.get(pk=model_id)
else:
model = Foo_model()
form = Foo_form(instance=model)
formset = Bar_formset(instance=model)
return render_to_response('form.html', {'form' : form, 'formset' : formset }, context_instance=RequestContext(request))
and template:
<html>
<form method="POST" action="">
{% csrf_token %}
<div>
{{ form }}
{{ formset }}
</div>
<input class="button" type="submit" value="Submit"/>
</form>
</html>
This only shows one instance of Bar_form, when it ought to show 23 ("extra=23"). Any ideas what I'm doing wrong?
Thanks
Update:
It turns out that part of the problem is that all of my model classes inherit from the same base class. If I make them just inherit from models.Model, then the problem goes away (though other problems rear their ugly heads). I still want them to inherit from a single class, so my original question remains.
Update Update:
Making my models' base class abstract:
class BaseClass(models.Model):
class Meta:
abstract = True
Seems to do the trick. I can now have ForeignKeys and ManyToManyFields between my classes.
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由于外键存在于
Foo模型中，因此您需要创建一个FooFormSet（否则，从逻辑上讲，它不会使感觉表格将包含什么）。Since the foreign key exists in the
Foomodel, you'll need to create aFooFormSet(otherwise, logically, it doesn't make sense as to what the form would contain).