django 模型表单.包括来自相关模型的字段 [英] django model Form. Include fields from related models

问题描述

我有一个名为 Student 的模型，它有一些字段，以及与用户 (django.contrib.auth.User) 的 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?

类似于:

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

当前没有显示任何内容.虽然仅适用于 StudentFields/

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

提前致谢.

推荐答案

一个常见的做法是使用 2 个表单来实现您的目标.

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

• User 模型的表单:

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

Student 模型的表格:

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

在您的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()

在模板中一起呈现表单:

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，我只是提到它，而不是推荐它)并使用inline_formsets 实现想要的结果.

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.

这篇关于django 模型表单.包括来自相关模型的字段的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！