python - 在Django ModelForm中传递相关对象的字段

我有一个扩展django.contrib.auth.models.User的Django模型类：

class MyModel(models.Model):
  user = models.OneToOneField(User, models.CASCADE, unique=True)
  bio = models.TextField()
  date_of_birth = models.DateField()

根据这个模型，我正在制作一个ModelForm：

class MyModelForm(forms.ModelForm):

  class Meta:
    model = MyModel
    fields = ['bio', 'date_of_birth']

如何告诉MyModelForm接受用户的字段，例如username，first_name，last_name？

我可以在类Meta字段中添加['bio', 'date_of_birth', 'user']的示例，但这将为我提供一个下拉列表，以选择MyModelForm中的MyModel与谁相关。

['bio', 'date_of_birth', 'user.first_name']引发异常django.core.exceptions.FieldError: Unknown field(s) (user.first_name) specified for MyModel

编辑：这是回溯
https://pastebin.com/0T42VKEP

最佳答案

您可以使用InlinFormset。我在这里发布了一个我可能使用的示例代码。我已根据您的需要进行了一些修改，因此，如果没有任何效果，请通知我。

#forms.py
class UserForm(forms.ModelForm):
    class Meta:
        model = User

class MyModelForm(forms.ModelForm):

  class Meta:
    model = MyModel

然后您认为您应该喜欢

def profileEdit(request,username):
    # querying the User object with pk from url
    user = User.objects.get(username=username)

    # prepopulate MyModelForm with retrieved user values from above.
    user_form = UserForm(instance=user)

    MyModelInlineFormset = inlineformset_factory(User, MyModel,can_delete=False, fields="__all__")
    formset = MyModelInlineFormset(instance=user)

    if request.user.is_authenticated() and request.user.id == user.id:
        if request.method == "POST":
            user_form = UserForm(request.POST, request.FILES, instance=user)
            formset = MyModelInlineFormset(request.POST, request.FILES, instance=user)

            if user_form.is_valid():
                created_user = user_form.save(commit=False)
                formset = MyModelInlineFormset(request.POST, request.FILES, instance=created_user)

                if formset.is_valid():
                    created_user.save()
                    formset.save()
                    return HttpResponseRedirect('/')

        return render(request, "profile_edit.html", {
            'title':'Edit -'+ user.get_full_name(),
            "user_form": user_form,
            "formset": formset,
        })
    else:
        raise PermissionDenied

并在您的profile_edit.html中

{% extends "layout.html" %}
{% block content %}
    {% if messages %}
    <div>
    {% for message in messages %}
            <div class="alert alert-{{ message.tags }}">  <!-- singular -->
                <a class="close" data-dismiss="alert">×</a>
                {{ message|safe }}
            </div>
        {% endfor %}
    </div>
    {% endif %}
<div class="col-xs-8 col-xs-offset-2">
      <div class="card">
        <div class="card-content">
        <h2 class="flow-text">Update your information</h2>
          <form action="." method="POST" class="padding" enctype="multipart/form-data">
            {% csrf_token %}
    {% for field in user_form %}
    <div class="form-group">
        {{ field.errors }}
       <label for="{{ field.label }}" >{{ field.label }}</label>
        {{ field }}
     {% if field.help_text %}
      <small class="form-text text-muted">{{ field.help_text|safe }}</small>
      {% endif %}
    </div>
{% endfor %}

    {{ formset.management_form }}
    {% for form in formset %}

        {% for hidden in form.hidden_fields %}
        {{ hidden }}
        {% endfor %}
        {% for field in form.visible_fields %}
        <div class="form-group">
            {{ field.errors }}
       <label for="{{ field.label }}" >{{ field.label }}</label>
       {{ field }}
      {% if field.help_text %}
      <small class="form-text text-muted">{{ field.help_text|safe }}</small>
      {% endif %}
        </div>
        {% endfor %}
    {% endfor %}
            <input type="submit" class="btn btn-primary" value="Save"></input>
        </form>
        </div>
    </div>
</div>
{% endblock content %}

关于python - 在Django ModelForm中传递相关对象的字段，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/48427821/