Django Form 初始化数据

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修改 urls.py 添加

    path('initial.html', views.initial),

修改 models.py

class UserInfo(models.Model):

    name = models.CharField(max_length=32)

    ut = models.ForeignKey('UserType', on_delete=models.CASCADE)

创建数据库

python manage.py makemigrations

python manage.py migrate

插入表数据

修改 views.py

def initial(request):

    from app01 import models

    if request.method == 'GET':

        nid = request.GET.get('nid')

        m = models.UserInfo.objects.filter(id=nid).first()

        dic = {'username': m.name, 'user_type': m.ut_id}

        obj = forms.InitialForm(dic)

        return render(request, 'initial.html', {'obj': obj})

修改 forms.py

class InitialForm(DForms.Form):

    username = fields.CharField()

    user_type = fields.IntegerField(

        widget=widgets.Select(choices=[])

    )

    def __init__(self, *args, **kwargs):

        # 执行父类构造方法

        super(InitialForm, self).__init__(*args, **kwargs)

        self.fields['user_type'].widget.choices = models.UserType.objects.all().values_list('id', 'caption')

在 templates 文件夹下创建 initial.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Title</title>

</head>

<body>

    {{ obj.username }}

    {{ obj.user_type }}

</body>

</html>

访问 http://127.0.0.1:8000/initial.html?nid=2 ，根据 nid=2 参数初始化