我的目标是在一个模板中使用两个模型。我已经尝试了各种各样的方法并且没有成功。最初我有2个视图，2个模型和两个表单。搜索后，我发现人们使用inlineformsets。所以我删除了其中一个视图并设置了inlineformset。 这是我目前所处的地方，似乎正在撞墙。
模板呈现给浏览器和＆＃39; object_list＆＃39; part根据需要显示数据库内容，并且＆＃39;形式＆＃39; part渲染表单并正确验证/保存数据。问题在于＆＃39; formset＆＃39;。没有字段被渲染（我希望看到一个下拉列表，因为该字段是一个外键）并且当提交＆＃39;我按下了按钮：
AttributeError at /settings/
'NoneType' object has no attribute 'save'
非常感谢任何寻找错误的帮助或关于替代解决方案的指示。
from django.db import models
class RevisionSettings(models.Model):
global_revision_type = models.CharField(max_length = 5, unique=True, blank = True)
global_revision_description = models.CharField(max_length = 300, unique=True, blank = True)
class Meta:
ordering = ["global_revision_type"]
def __unicode__(self):
return u'%s %s' % (self.global_revision_type, self.global_revision_description)
class RevisionDefaultType(models.Model):
defaultrevisiontype = models.ForeignKey(RevisionSettings)
class Meta:
ordering = ["defaultrevisiontype"]
def __unicode__(self):
return unicode(self.defaultrevisiontype)
class RevisionSettingsView(CreateView):
template_name = 'settings/revisionsettings_view.html'
model = RevisionSettings
form_class = SettingsForm
success_url = reverse_lazy('globalsettings')
success_message = 'Successfully added your new revision type'
def get(self, request, *args, **kwargs):
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
formset = SettingsFormSet(instance = RevisionSettings)
return self.render_to_response(
self.get_context_data(form=form,
formset=formset))
def post(self, request, *args, **kwargs):
self.object = None
form_class = self.get_form_class()
form = self.get_form(form_class)
formset = SettingsFormSet(self.request.POST)
if 'rev_settings_form_1' in self.request.POST:
if form.is_valid():
return self.form_valid(form)
else:
return self.form_invalid(form)
elif 'rev_settings_form_2' in self.request.POST:
if formset.is_valid():
return self.formset_valid(formset)
else:
return self.form_invalid(formset)
def form_valid(self, form):
self.object = form.save()
self.object.save()
return HttpResponseRedirect(self.get_success_url())
def formset_valid(self, formset):
self.object.save()
formset.instance = self.object
formset.save()
return HttpResponseRedirect(self.get_success_url())
def form_invalid(self, form, formset):
return self.render_to_response(self.get_context_data(form=form,formset=formset))
def get_context_data(self, **kwargs):
kwargs['object_list'] = RevisionSettings.objects.order_by('global_revision_type')
return super(RevisionSettingsView, self).get_context_data(**kwargs)
from django import forms
from django.forms.models import inlineformset_factory
from .models import RevisionSettings, RevisionDefaultType
class SettingsForm(forms.ModelForm):
class Meta:
model = RevisionSettings
class DefaultSettingsForm(forms.ModelForm):
class Meta:
model = RevisionDefaultType
SettingsFormSet = inlineformset_factory(RevisionSettings, RevisionDefaultType)
（我删除了大部分HTML样式以保持信息的正确性）
{% extends 'base_private.html' %}
{% block content %}
{% for object in object_list %}
<tr>
<td align="center">{{ object.global_revision_type }}</td>
<td align="center">{{ object.global_revision_description }}</td>
<td align="center"><a href="/settings/{{ object.id }}/delete" class="tooltip-test" title="" data-original-title="Delete selected revision type"><span class="glyphicon glyphicon-remove-circle"></span></a></td>
</tr>
{% endfor %}
<form action = '{{ action }}' method = 'POST' class="form-horizontal" role="form">
{% csrf_token %}
<tr>
<td align="center">
{{ formset.management_form }}
{% for form in formset %}
{{ form.id }}
{{ form.defaultrevisiontype.label_tag }}
{{ form.defaultrevisiontype }}
{% endfor %}
</td>
</tr>
<span class="input-group-addon">
<input type = 'submit' name = 'rev_settings_form_2' value = 'Update Default Revision Type' class = 'btn btn-success'>
</span>
<td align="center">{{ form.global_revision_type }}{{ form.global_revision_type.errors }}</td>
<td align="center">{{ form.global_revision_description }}{{ form.global_revision_description.errors }}</td>
</tr>
<span class="input-group-addon">
<input type = 'submit' name = 'rev_settings_form_1' value = 'Add Revision Type' class = 'btn btn-success'>
</span>
</form>
{% endblock %}
答案 0 :(得分：1)
Formsets对于两种形式来说都是过度杀伤力。这实际上并不太难，但记录不完整。您可以将两个表单设置为相同的表单类型，只需给出一个前缀。
def parent_apply(request):
if request.method == 'POST':
parent_form = SignupForm(request.POST, prefix="parent")
student_form = StudentApplyForm(request.POST, prefix="student")
if parent_form.is_valid() and student_form.is_valid():
parent = parent_form.save()
student = student_form.save(parent)
else: messages.error(request, "Please correct the errors marked in red.")
else:
parent_form = SignupForm(prefix="parent")
student_form = StudentApplyForm(prefix="student")
return render_to_response('template_path/forms.html', { 'parent_form':parent_form, 'student_form':student_form }, context_instance=RequestContext(request))
表单只是常规的Django表单，不需要特殊设置。您可以更改他们验证的顺序并保存一个，即使另一个没有验证您是否选择。
在HTML模板中，将两个表单包装在同一个标记中，它们将同时提交。如果希望表单转到不同的视图函数，请指定两个不同的元素。
答案 1 :(得分：0)
感谢所有帮助。指针真的帮助我找到了这个解决方案。主要的变化是'def get＆＃39;如下所示。我删除了formset并以这种方式传递了表单。
def get(self, request, *args, **kwargs):
form = self.settings_form_class
formset = self.default_form_class
return self.render_to_response(self.get_context_data(form = form, formset = formset))
我不知道这是可能的！再次感谢。