我为用户制作表格。 他们必须以适当的形式添加许多模型对象。 进入GET方法时显示一行 他们将输入输入名称=“ add-rows-number”，该数字应显示在表单集中的表单数
我尝试使用formset和模型formsetfactory
class AddCostCenters(View):
def __init__(self, *args, **kwargs):
super(AddCostCenters, self).__init__(*args, **kwargs)
self.FormSet = modelformset_factory(CostCenter, form=CostCenterAddForm, extra=self.get_form_size)
def get_form_size(self, request):
extra_rows_num = 1
if 'add-rows' in request.POST:
extra_rows_num += int(request.POST.get('add-rows-number'))
return extra_rows_num
def get(self, request, proceeding_id):
costcenter_model = CostCenter.objects.filter(
participation__provider__user=request.user,
participation__proceeding=proceeding_id
)
return TemplateResponse(request, 'costcenteradd.html', context)
def post(self, request, proceeding_id):
costcenter_model = CostCenter.objects.filter(
participation__provider__user=request.user,
participation__proceeding=proceeding_id
)
# if 'add-rows' in request.POST:
# try:
# rows_to_show = int(request.POST.get('add-rows-number'))
# except ValueError:
# rows_to_show = 0
# self.extra_rows_number += rows_to_show
if 'save_form' in request.POST:
new_cost_centers = []
post_formset_data = self.FormSet(request.POST)
if post_formset_data.is_valid():
instances = post_formset_data.save(commit=False)
new_cost_centers.append(instance)
# do something
else:
post_form = post_formset_data
context = {
'form': post_form,
}
return render(request, 'costcenteradd.html', context)
class CostCenterAddForm(forms.ModelForm):
# helper = CostCenterAddFormSetHelper()
def __init__(self, *args, **kwargs):
super(CostCenterAddForm, self).__init__(*args, **kwargs)
self.helper = FormHelper()
self.helper.form_show_labels = False
for field_name, field in self.fields.items():
field.help_text = None
class Meta:
model = CostCenter
fields = (
'id',
'cost_center_account_no',
'cost_center_account_name',
'departmental_code',
'values_for_year',
'only_total_cost_of_cost_center',
)
exclude = (
'participation',
'to_check',
'is_checked',
'accepted',
'use_in_calculations',
)
<div class="container-fluid ">
<form method="post">
{% csrf_token %}
{{ form.management_form }}
<div class="row sticky-top text-center form-nav">
<div class="col-md-2 content_center"> Numer Konta OPK </div>
<div class="col-md-4 content_center"> Nazwa konta OPK </div>
<div class="col-md-2 content_center"> Kod resortowy </div>
<div class="col-md-1 content_center"> Rok za który jest postępowanie </div>
<div class="col-md-1 content_center"> Uproszczone dane finansowe </div>
<div class="col-md-2 content_center"> Usuń </div>
</div>
<div class="section sticky-top my-2 form-panel ">
<div class="row sticky-top my-2">
<div class="col-md-2">
<button class="btn btn-success btn-block" type="submit" name="save_form">Zapisz</button>
</div>
<div class="col-md-4">
<div class="input-group mb-3">
<input class="form-control" min="1" type="number" name="add-rows-number"
value={{form.total_form_count }}
placeholder="number" aria-label="add form rows ">
<div class="input-group-append">
<button class="btn btn-info" type="submit" name="add-rows">show_rows</button>
</div>
</div>
</div>
</div>
</div>
<hr>
{% for field in form %}
<div class="row text-center">
<div class="col-md-2 paste-in">
{{field.cost_center_account_no | as_crispy_field}}
</div>
<div class="col-md-4 paste-in">
{{field.cost_center_account_name | as_crispy_field}}
</div>
<div class="col-md-2 paste-in">
{{field.departmental_code | as_crispy_field}}
</div>
<div class="col-md-1 paste-in">
{{field.values_for_year | as_crispy_field}}
</div>
<div class="col-md-1">
{{field.only_total_cost_of_cost_center | as_crispy_field}}
</div>
<div class="col-md-2">
<input type="submit" name="del_btn{{ field.instance.id }}" value="del"
{% if field.instance.id == None %}
class="btn btn-outline-secondary" disabled
{% else %}
class="btn btn-outline-danger"
{% endif%} />
</div>
</div>
答案 0 :(得分：0)
您需要同时在formset和get()方法中创建post()并将其添加到上下文中。您使用queryset属性用现有实例填充它：
formset = self.FormSet(queryset=CostCenter.objects.filter(...))
# or
formset = self.FormSet(queryset=CostCenter.objects.filter(...), data=request.POST)
然后在您的模板中，循环浏览formset（在模板中称为form的实际上是一个表单集）：
{{ formset.management_form }}
{% for form in formset %}
{{ form.cost_center_account_no|as_crispy_field }}
...
{% endfor %}
在您对self.FormSet的定义中，设置extra=1，以便用户至少有一个额外的行。删除计算，因为这不起作用。 request在__init__()的{{1}}中不可用（它与View一起添加）。
现在，我不会让用户提交额外的行数，您只需从输入数据中扣除它即可。编写一些JavaScript，让用户自己直接添加行，就像在管理员中看到的那样：
这样，当用户提交表单集时，它将有多余的行。