django模型表格。包括相关模型中的字段 [英] django model Form. Include fields from related models

问题描述

我有一个名为Student的模型，该模型具有一些字段，并且与用户（django.contrib.auth.User）具有OneToOne关系。

I have a model, called Student, which has some fields, and a OneToOne relationship with a user (django.contrib.auth.User).

class Student(models.Model):

    phone = models.CharField(max_length = 25 )
    birthdate = models.DateField(null=True) 
    gender = models.CharField(max_length=1,choices = GENDER_CHOICES) 
    city = models.CharField(max_length = 50)
    personalInfo = models.TextField()
    user = models.OneToOneField(User,unique=True)

然后，我有用于该模型的ModelForm

Then, I have a ModelForm for that model

class StudentForm (forms.ModelForm):
    class Meta:
        model = Student

使用类Meta中的fields属性，我设法仅显示模板中的某些字段。但是，我可以指出要显示哪些用户字段吗？

Using the fields attribute in class Meta, I've managed to show only some fields in a template. However, can I indicate which user fields to show?

类似的内容：

   fields =('personalInfo','user.username')

当前未显示任何内容。不过，仅适用于StudentFields。

is currently not showing anything. Works with only StudentFields though/

预先感谢。

推荐答案

一种常见的做法是使用两种形式来实现您的目标。

A common practice is to use 2 forms to achieve your goal.

• User 模型：

class UserForm(forms.ModelForm):
    ... Do stuff if necessary ...
    class Meta:
        model = User
        fields = ('the_fields', 'you_want')

学生模型的表格：

class StudentForm (forms.ModelForm):
    ... Do other stuff if necessary ...
    class Meta:
        model = Student
        fields = ('the_fields', 'you_want')

在视图中使用这两种形式（用法示例）：

Use both those forms in your view (example of usage):

def register(request):
    if request.method == 'POST':
        user_form = UserForm(request.POST)
        student_form = StudentForm(request.POST)
        if user_form.is_valid() and student_form.is_valid():
            user_form.save()
            student_form.save()

在模板中一起渲染表单：

Render the forms together in your template:

<form action="." method="post">
    {% csrf_token %}
    {{ user_form.as_p }}
    {{ student_form.as_p }}
    <input type="submit" value="Submit">
</form>

另一种选择是让您将关系从 OneToOne 更改为 ForeignKey （这完全取决于您和我只需提及它，不推荐它）并使用 inline_formsets 即可达到预期效果。

Another option would be for you to change the relationship from OneToOne to ForeignKey (this completely depends on you and I just mention it, not recommend it) and use the inline_formsets to achieve the desired outcome.

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