晚上好,
我有一个脆弱的形式inlineformset的麻烦.我遵循了以下指南：
https://github.com/timhughes/django-cbv-inline-formset/blob/master/music/views.py
https://django-crispy-forms.readthedocs.io/en/latest/crispy_tag_formsets.html#formsets
编辑
我认为这个问题与双提交按钮有关. devicemodel表单有一个按钮,按下时会产生此错误.但是还有一个保存按钮作为资源助手的一部分,当提交时我得到一个空的模型表单错误.
我添加了操作每个按钮时会发生什么的屏幕截图
因为我收到错误,我必须遗漏一些东西：
['ManagementForm data is missing or has been tampered with']
这是我的更新视图：
class EditDeviceModel(PermissionRequiredMixin, SuccessMessageMixin, UpdateView):
model = DeviceModel
form_class = DeviceModelForm
template_name = "app_settings/base_formset.html"
permission_required = 'config.change_devicemodel'
success_message = 'Device Type "%(model)s" saved successfully'
def get_success_url(self, **kwargs):
return '{}#device_models'.format(reverse("config:config_settings"))
def get_success_message(self, cleaned_data):
return self.success_message % dict(
cleaned_data,
model=self.object.model,
)
def get_context_data(self, **kwargs):
context = super().get_context_data(**kwargs)
context['title']='Edit Device Model'
if self.request.POST:
context['formset'] = DeviceFormSet(self.request.POST, instance=self.object)
else:
context['formset'] = DeviceFormSet(instance=self.object)
context['helper'] = DeviceFormSetHelper()
return context
def form_valid(self, form):
context = self.get_context_data()
formset = context['formset']
if formset.is_valid():
self.object = form.save()
formset.instance = self.object
formset.save()
return redirect(self.success_url)
else:
return self.render_to_response(self.get_context_data(form=form))
这是我的表格：
class MonitoredResourceForm(forms.ModelForm):
class Meta:
model = MonitoredResource
fields = ['resource','model']
def __init__(self, *args, **kwargs):
self.is_add = kwargs.pop("is_add", False)
super(MonitoredResourceForm, self).__init__(*args, **kwargs)
self.helper = FormHelper(self)
self.helper.form_id = 'snmp_resource_form'
self.helper.form_method = 'POST'
self.helper.layout = Layout(
Div(
Div(
Field('model'),
Field('resource', placeholder="Resource"),
css_class='col-lg-3'
),
css_class='row'
),
Div(
Div(
HTML("""<input type="submit" name="submit" value="""),
HTML('"Add' if self.is_add else '"Update' ),
HTML(""" monitored resource" class="btn btn-primary"/>"""),
HTML("""<a href="{% url 'config:config_settings' %}#monitored_resources" class="btn btn-primary">Cancel</a>"""),
HTML("""{% if object %}
<a href="{% url 'config:delete_monitoredresource' object.id %}"
class="btn btn-danger">
Delete <i class="fa fa-trash-o" aria-hidden="true"></i></a>
{% endif %}"""),
css_class='col-lg-12'
),
css_class='row'
),
)
class DeviceModelForm(forms.ModelForm):
class Meta:
model = DeviceModel
fields = ['model','vendor','device_type','ports','uplink_speed']
def __init__(self, *args, **kwargs):
self.is_add = kwargs.pop("is_add", False)
super(DeviceModelForm, self).__init__(*args, **kwargs)
self.helper = FormHelper(self)
self.helper.form_id = 'device_type_form'
self.helper.form_method = 'POST'
self.helper.layout = Layout(
Div(
Div(
Field('model', placeholder="Model"),
Field('vendor',),
Field('device_type',),
Field('ports', placeholder="Ports"),
Field('uplink_speed', placeholder="Uplink Speed"),
css_class='col-lg-6'
),
css_class='row'
),
Div(
Div(
HTML("""<input type="submit" name="submit" value="""),
HTML('"Add' if self.is_add else '"Update' ),
HTML(""" Device Model" class="btn btn-primary"/>"""),
HTML("""<a href="{% url 'config:config_settings' %}#device_models" class="btn btn-primary">Cancel</a>"""),
HTML("""{% if object %}
<a href="{% url 'config:delete_device_model' object.id %}"
class="btn btn-danger">
Delete <i class="fa fa-trash-o" aria-hidden="true"></i></a>
{% endif %}"""),
css_class='col-lg-12'
),
css_class='row'
),
)
DeviceFormSet = inlineformset_factory(DeviceModel, MonitoredResource, form=MonitoredResourceForm, extra=1)
class DeviceFormSetHelper(FormHelper):
def __init__(self, *args, **kwargs):
super(DeviceFormSetHelper, self).__init__(*args, **kwargs)
self.form_method = 'post'
self.render_required_fields = True
self.form_id = 'snmp_resource_form'
self.form_method = 'POST'
self.add_input(Submit("submit", "Save"))
self.layout = Layout(
Div(
Div(
Field('model'),
Field('resource', placeholder="Resource"),
css_class='col-lg-6'
),
css_class='row'
),
)
并在我呈现的模板中：
{% block content %}
{% include "home/form_errors.html" %}
<div class="col-lg-6">
{% crispy form %}
</div>
<div class="col-lg-6">
{% crispy formset helper %}
</div>
<!-- /.row -->
{% endblock %}
有谁能看到我失踪了什么？
最佳答案 我认为您必须在模板中呈现管理表单,
explained here why you need that
formset使用管理表单来管理表单集中包含的表单集合.如果您不提供此管理数据,则会引发异常
在视图html中添加此项
{{ DeviceFormSet.management_form }}
