提交表单后，Django 没有更新我的数据库

Posted 2023-02-24

【中文标题】提交表单后，Django 没有更新我的数据库

【英文标题】：Django is not updating my database after submitting my form

【发布时间】：2021-09-20 17:31:37

【问题描述】：

我已经创建了一个模型和一个表单，两者都正常工作，并且我已经使用管理模块将数据添加到数据库中

models.py

class Client(models.Model):
    firstname = models.CharField(blank=True, max_length=30)
    lastname = models.CharField(blank=True, max_length=15)
    company = models.ForeignKey(Company, on_delete=models.CASCADE, default="company")
    position = models.CharField(blank=True, max_length=15)
    country = CountryField(blank_label='(select country)')
    email = models.EmailField(blank=True, max_length=100, default="this_is@n_example.com")
    created_at = models.DateTimeField(auto_now_add=True)
    updated_at = models.DateTimeField(auto_now=True)
    phone = PhoneField(default="(XX)-XXX-XXX")

    def __str__(self):
        return f'self.firstname'

forms.py

class ClientForm(forms.ModelForm):
    class Meta:
        model = Client
        fields = ('firstname', 'lastname',"position",'country','email','phone')

views.py

@login_required
def add_client(request):
    if request.method == "POST":
        client_form = ClientForm(instance=request.user, data=request.POST)
        if client_form.is_valid():
            client_form.save()
            messages.success(request, 'You have successfully added a client')
        else:
            messages.success(request, "Error Updating your form")
    else:
        client_form = ClientForm(instance=request.user)

    return render(request,
                  "account/add_client.html",
                  'client_form':client_form)

add_client.html

% extends "base.html" %

% block title %Client Information % endblock %

% block content %
  <h1> Client Form</h1>
  <p>Please use the form below to add a new client to the database:</p>
    <form method="post" enctype="multipart/form-data">
     client_form.as_p 
    % csrf_token %
    <p><input type="submit" value="Save changes"></p>
    </form>


% endblock %

一切似乎都正常，我可以在网站上提交数据，我收到一条消息，说明提交正常，但是，当我检查管理网站并检查数据库时，我看不到新的添加了数据，基本上表单没有提交数据，我没有收到错误

[2021 年 7 月 10 日 18:36:24]“GET /account/add_client/HTTP/1.1”200 12385 [10/Jul/2021 18:36:36]“POST /account/add_client/HTTP/1.1”200 12616

有谁知道我做错了什么？

【问题讨论】：

尝试在您的视图中删除此行：else: messages.success(request, "Error Updating your form") 这样您就可以看到表单的错误消息。

感谢贡献，我做到了，没有错误：

@login_required def add_client(request): if request.method == "POST": client_form = ClientForm(instance=request.user, data=request.POST) if client_form.is_valid(): client_form.save() messages.success(request, 'You have successfully added a client') #else: #messages.success(request, "Error Updating your form") else: client_form = ClientForm(instance=request.user) return render(request, "account/add_client.html", 'client_form':client_form)

【参考方案1】：

我注意到我的错误在表单中，我不应该在实例中使用 request.user，@login_required 就足够了。

请查看修改后的代码：

@login_required
def add_client(request):
    if request.method == "POST":
        client_form = ClientForm(request.POST)
        if client_form.is_valid():
            client_form.save()
            messages.success(request, 'You have successfully added a client')
            return HttpResponseRedirect(reverse('add_client'))
        else:
            messages.error(request, "Error Updating your form")
    else:
        client_form = ClientForm()

    return render(request,
                  "account/add_client.html",
                  'client_form':client_form)