django - Django for 循环覆盖保存的模型表单

Question

以下代码保存到数据库，但输入到 form2 的值会覆盖输入到数据库中 Form1 的值。但是 Assumptions.Name 不会被覆盖，并且具有 Form1 和 Form2 的值。此外，如果我刷新页面表单正在扩展并且有更多行，其中包含以前保存的值。如何避免Form1和Form2数据正确保存到数据库？

视图.py

from django.shortcuts import render
from .forms import modelformset_factory, AssumptionsForm
from .models import Assumptions
import pdb

model_names = ['Form1', 'Form2']


def get_assumptions(request):

    AssumptionsFormset = modelformset_factory(
    Assumptions, form=AssumptionsForm, extra=5)

    if request.method == 'POST':

        print('Reached post')

        pdb.set_trace()

        for thing in model_names:

            formset = AssumptionsFormset(request.POST)

            if formset.is_valid():



                if thing in request.POST:

                    print('template name in model_names')

                    for form in formset:

                        print('in for loop' +thing)

                        assumptions = form.save(commit='False')
                        assumptions.Name = thing
                        assumptions.save()

    else:

        formset = AssumptionsFormset()

        print('reached else')

    return render(request, 'assumptions.html', {'formset': formset, 'model_names': model_names})

模型.py

from django.db import models
from django.forms import ModelForm

class Assumptions(models.Model):

    Worst_Case = models.FloatField(null=True, blank=True, default=None)
    Grey_Case = models.FloatField(null=True, blank=True, default=None)
    Red_Case = models.FloatField(null=True, blank=True, default=None)
    Blue_Case = models.FloatField(null=True, blank=True, default=None)
    Green_Case = models.FloatField(null=True, blank=True, default=None)
    Best_Case = models.FloatField(null=True, blank=True, default=None)
    Name = models.TextField(null=True, blank=True, default=None)

假设.html

<div class="form">
<form action="" method="post">
{% csrf_token %}
{{ formset.management_form }}
{{ formset.non_form_errors.as_ul }}
{% for vardas in model_names %}
<h1>{{vardas}}</h1>
<table id="formset" class="form">
{% for form in formset.forms %}
  {% if forloop.first %}
  <thead><tr>
    {% for field in form.visible_fields %}
    <th>{{ field.label|capfirst }}</th>
    {% endfor %}
  </tr></thead>
  {% endif %}
  <tr class="{% cycle 'row1' 'row2' %}">
  {% for field in form.visible_fields %}
    <td>
    {# Include the hidden fields in the form #}
    {% if forloop.first %}
      {% for hidden in form.hidden_fields %}
      {{ hidden }}
      {% endfor %}
    {% endif %}
      {{ field.errors.as_ul }}
      {{ field }}
    </td>
  {% endfor %}
  </tr>
{% endfor %}
</table>
<input type="hidden" name="{{vardas}}" />
{% endfor %}
<input type="submit" value="Next">

</form>
</div>

表格.py

from django import forms
from django.forms import modelformset_factory, ModelForm
from .models import Assumptions

class AssumptionsForm(ModelForm):

    class Meta:
        model = Assumptions
        fields = ['Worst_Case', 'Grey_Case', 'Red_Case', 'Blue_Case', 'Green_Case', 'Best_Case']
        exclude = ['Name']

标签： djangoloopsmodelformformset