将前端设置的值保存到 Django 数据库

Question

我有一个网站，允许用户选择他们喜欢的一些爱好。目前，该网站从模型加载这些爱好并用复选框列出它们。我想要做的是当用户保存表单时，它还应该将这些复选框值保存到数据库中 - 即如果他们勾选足球，数据库应该保存这个用户喜欢足球的事实。我是 Django 和 Python 的新手，所以不太清楚如何做到这一点。这是我正在使用的代码。这是 Hobbies 的 Models.py 文件：

TYPES = (
        ("Football", "Football"),
        ("Cricket", "Cricket"),
        ("Swimming", "Swimming"),
        ("Cycling", "Cycling")
        )

class Hobby(models.Model):
    myfield = models.CharField(max_length=50, choices = TYPES, default=TYPES[0], null=True)
    football = models.BooleanField(default = False)
    cricket = models.BooleanField(default = False)
    swimming = models.BooleanField(default = False)
    cycling = models.BooleanField(default = False)

这是相关的views.py文件：

def profile(request, user):
    # use this for debugging:
    # import pdb; pdb.set_trace()
    if 'email' in request.POST:
        email = request.POST['email']
        gender = request.POST['gender']
        dob = request.POST['dob']
##        hobby = request.POST['hobby']
        if user.profile:
            user.profile.email = email
            user.profile.gender = gender
            user.profile.dob = dob
##            user.profile.hobby = hobby
            user.profile.save()
        else:
            profile = Profile(email=email, gender=gender, dob=dob)
            profile.save()
            user.profile = profile
        user.save()
    context = {
        'appname': appname,
        'username': user.username,
        'profile' : user.profile,
        'all_hobbies': [hobby[0] for hobby in TYPES],
        'loggedin': True
    }
    return render(request, 'mainapp/profile.html', context)

最后是显示信息的 HTML/JS 代码：

<span class="fieldname">Hobbies</span>
        {% for hobby in all_hobbies %}

                <input type="checkbox" name={{hobby}} value={{hobby}}> {{hobby}}<br>
        {% endfor %}

<input type='submit' value='Save'>

我想要的是一种检查复选框是否已被勾选的方法，如果是，则将数据库/模型中的 BooleanField 的值更改为 True 或 False。但是，我不确定在视图或 JS 代码中的何处执行此操作。有人可以帮我吗？非常感谢。

Answer 1

对于这种情况，列出所有爱好并再次更新它们。您需要使用表单类。例子。我只想提一件事，下面的代码只是你应该做什么的指导。因为它有点混淆你想要接近的逻辑。因为您没有将用户作为会话处理，而只是一个普通密钥。

model.py

my_choices = (
    (0, "None"),
    (1, "Football"),
    (2, "Cricket"),
    (3, "Swimming"),
    (4, "Cycling"),
)
class Hobby(models.Model):
    user = models.ForeignKey(Profile, on_delete=models.DO_NOTHING)
    field = models.integerField(choices=my_choices, default=0)

forms.py

class HobbyForm(ModelForm):
    class Meta:
        model = Hobby
        fields = ["field"]

views.py

def profile(request,user):

    try:
        profile_object = Profile.get(id=user)

        if request.method.POST:
            form = HobbyForm(request.POST)
            if form.is_valid():
                profile_object.field = form.cleaned_data["field"]
                profile_object.save()

                context = {
                        "form": form,
                        "profile": profile_object,
                    }
                return render(request, 'mainapp/profile.html', context)

            else:
                context = {
                        "form": form,
                        "profile": profile_object,
                    }
                return render(request, 'mainapp/profile.html', context)
        else:
            context = {
                        "form": form,
                        "profile": profile_object,
                    }
            return render(request, 'mainapp/profile.html', context)

    except Profile.DoesNotExists:
        context = {
            "form": form,
            "profile": profile_object,
        }
        return render(request, 'mainapp/profile.html', context)

profile.html

<form action="myurl/{{profile.id}}/" method="post">
{% csrf_token %}
{% form.as_p %}
<input type="submit" value="OK">
</form>