python Django - 使用多种表单
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Django - Working with multiple forms
提问by FernandoEscher
What I'm trying to do is to manage several forms in one page, I know there are formsets, and I know how the form management works, but I got some problems with the idea I have in mind.
我想要做的是在一个页面中管理多个表单，我知道有表单集，并且我知道表单管理是如何工作的，但是我的想法遇到了一些问题。
Just to help you to imagine what my problem is I'm going to use the django example models:
只是为了帮助您想象我的问题是什么，我将使用 django 示例模型：
from django.db import models
class Poll(models.Model):
question = models.CharField(max_length=200)
pub_date = models.DateTimeField()
class Choice(models.Model):
poll = models.ForeignKey(Poll)
choice = models.CharField(max_length=200)
votes = models.IntegerField(default=0)
Now, imagine I've already made the form clases:
现在，假设我已经创建了表单类：
from django import forms
from mysite.polls.models import Poll, Choice
class PollForm(forms.ModelForm):
class Meta:
model = Poll
class ChoiceForm(forms.ModelForm):
class Meta:
model = Choice
exclude = ('poll',)
So what I want to do is to have several form instances of the Poll and Choice model in a single page, but mind that these models can be repeated too:
所以我想要做的是在一个页面中有几个 Poll 和 Choice 模型的表单实例，但请注意，这些模型也可以重复：
<form action="{{url}}" method="post">
{{pollform}}
{{choiceform}}
{{pollform}}
</form>
As you can see there are two Poll forms and one Choice form, but the Poll forms are separated by the Choice form. I do need that the forms keep their order in the page, so is a little harder to use formsets.
如您所见，有两种 Poll 表单和一种 Choice 表单，但 Poll 表单由 Choice 表单分隔。我确实需要表单在页面中保持它们的顺序，所以使用表单集有点困难。
The problem I got, is that the values that comes in the post are all by the name "answer", so I get a list of all the elements from all forms by the name "answer" and I can't identify which ones belong to each form.
我遇到的问题是，帖子中的值都以名称“answer”命名，因此我从名称为“answer”的所有表单中获取了所有元素的列表，但我无法确定哪些属于到每个表格。
Don't know if this explanation get a clear view of my problem. Any ideas to get this stuff done?
不知道这个解释是否清楚地了解了我的问题。有什么想法可以完成这些工作吗？
Thanks for your help!
谢谢你的帮助！
PD: Don't pay attention to the relation between Poll and Choice, those models are just to clarify the problen, so the relation doesn't matter at all.
PD：不要关注Poll和Choice之间的关系，那些模型只是为了澄清问题，所以关系根本不重要。
回答by Zach
Use the prefixkwarg
使用prefix夸格
You can declare your form as:
您可以将表单声明为：
form = MyFormClass(prefix='some_prefix')
and then, as long as the prefix is the same, process data as:
然后，只要前缀相同，将数据处理为：
form = MyFormClass(request.POST, prefix='some_prefix')
Django will handle the rest.
Django 将处理剩下的事情。
This way you can have as many forms of the same type as you want on the page
通过这种方式，您可以在页面上拥有任意数量的相同类型的表单
