Question

如果用户向formset添加了另一个表单，但是已经在第一个表单中输入了某些内容，则输入将会丢失，因为新表单已创建。用户现在有2个空表格。有没有办法将新表单添加到formset但不会丢失用户输入？

forms.py

class Form(forms.Form):
    client = forms.CharField(label='Client', required=False)
    end_client = forms.CharField(label='End client', required=False)
    product = AutoCompleteSelectField(lookup_class=ProductLookup, label='Model', required=False)

views.py

def get(self, request):
    request.session['form_count'] = 1

    FormSet = formset_factory(Form)
    formset = FormSet()

    return render(request, self.template_name, {'formset': formset} )

def post(self, request):
    if "add-form" in request.POST:
        form_count = request.session['form_count']
        print("There are " + str(form_count) + " forms")

        form_count = form_count + 1
        request.session['form_count'] = form_count
        print("Form count increased by 1, form count is: " + str(form_count))

        FormSet = formset_factory(Form, extra=int(form_count))
        formset = FormSet()  **<-- if I put request.POST in here, new form will not be created**

        return render(request, self.template_name, {'formset': formset})

html文件

<div class="content">
  <form method="post">
    {% csrf_token %} {{ formset.management_form }}
    <div class="form-group">
      {% for form in formset.forms %}
      <table class='no_error'>
        {{ form.as_table }}
      </table>
      <br>
      <br> {% endfor %}
    </div>
    <input class="btn btn-primary" type="submit" value="Submit order" />
    <input name="add-form" class="btn btn-primary" type="submit" value="Add new product" />
  </form>
</div>

Answer 1

得到了我的问题的答案。起初我只想用Django做这件事，但我发现了一个更简单的方法，用jQuery做了。

以下是问题的解决方案： Dynamically adding a form to a Django formset with Ajax

如何向django formset添加新表单，而不会丢失以前表单中的用户输入

1 个答案: