如何获取用户对象并将其传递给django中的表单字段

Question

是否有更好的方法从下面 forms.py 中的代码获取用户对象？

型号

class Profile(models.Model):
    user = models.OneToOneField(User, on_delete=models.CASCADE)
    ...

forms.py

class FooForm(forms.Form):

    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop("user")
        super(ExperienceStart, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_method = 'post'
        self.helper.layout = Layout(InlineRadios('topics'),)

    hardcoded_username = "johndoe" # i want to find a way not to hardcode this

    current_user = User.objects.filter(username=hardcoded_username).first()

    profile = Profile.objects.filter(user=current_user).first()

    ...

    profile_values = list(zip(profile, profile))

    profile = forms.TypedChoiceField(
        label="Select a Profile",
        choices=profile_values,
        coerce=str,
        widget=forms.RadioSelect,
        initial=profile[0],
        required=True)

views.py

def foo(request):
    form = fooForm(request.POST, user=request.user)

    print(form.request) # i have already tried this but i want to get it in form not views

    if request.method == "POST":
        if form.is_valid():
            # do something
    else:
        form = fooForm(user=request.user)

    context = {"form": form}

我正在尝试找到一种方法，而不是在 forms.py 中对用户名进行硬编码并获取当前登录的用户。

Answer 1

不要将其包含在表单中。表单通常 请求未知 ，此外还用于处理来自 HTML 表单的输入。

您可以利用表单的initial=…参数来指定初始项。

在您的表单中，您可以使用 ModelChoiceField [Django-doc] 到 select Profile 项目：

class FooForm(forms.Form):

    profile = forms.<strong>ModelChoiceField(</strong>
        label='Select a Profile',
        <strong>queryset=Profile.objects.all()</strong>,
        widget=forms.RadioSelect,
        required=True
    <strong>)</strong>

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.form_method = 'post'
        self.helper.layout = Layout(InlineRadios('topics'))

然后在视图中，您可以将用户的个人资料作为初始值传递：

from django.shortcuts import redirect, render
from django.contrib.auth.decorators import login_required

@login_required
def foo(request):
    if request.method == 'POST':
        form = fooForm(request.POST<strong>, initial={'profile': request.user.profile}</strong>)
        if form.is_valid():
            # do something
            return <strong>redirect('<em>name-of-some-view</em>')</strong>
    else:
        form = fooForm(<strong>initial={'profile': request.user.profile}</strong>)
    context = {'form': form}
    return render(request, 'some_template.html', context)

Note: You can limit views to a view to authenticated users with the @login_required decorator [Django-doc].

Note: In case of a successful POST request, you should make a redirect [Django-doc] to implement the Post/Redirect/Get pattern [wiki]. This avoids that you make the same POST request when the user refreshes the browser.

如何获取用户对象并将其传递给django中的表单字段

how to get user object and pass it to form field in django

python

django

django-forms

python-3.x

型号

forms.py

views.py