Question

我正在尝试通过POST请求在数据库中保存表单数据，请求已成功完成但数据未保存在数据库中。

models.py

class Image(models.Model):
   user = models.ForeignKey(User, related_name='images')
   tagName = models.CharField(max_length=255)
   instance = models.CharField(max_length=255)

forms.py

class BuildImageForm(forms.ModelForm):
class Meta:
    fields = ('user', 'tagName', 'instance')
    model = Image

views.py

class BuildImage(LoginRequiredMixin, CreateView):
   form_class = BuildImageForm
   model = Image
   template_name = 'images/buildImage.html'
   success_url = 'user/gui'

def get(self, request, *args, **kwargs):
    objectlist = request.user.instances.all()
    return render(request, 'images/buildImage.html', {'form': forms.BuildImageForm,
                                                      'objectlist': objectlist})

def form_valid(self, form):
    instance = form.save()
    instance.user = self.request.user
    instance.tagName = self.request.tagName
    instance.instance = str(self.request.instance_name)
    instance.save()
    return HttpResponse(status=200)

更新 - 已修改 我已将我的观点更新为：

    def post(self, request, *args, **kwargs):
    if request.method == 'POST':
        form = BuildImageForm(request.POST)
        if form.is_valid():
            data = form.cleaned_data
            form.instance.user = self.request.user
            form.instance.tagName = data['tagName']
            form.instance.instance = data['instance']
            form.save()
        else:
            print(form.errors)
    return HttpResponse(status=200)

现在它在控制台中打印出错误：

<ul class="errorlist"><li>instance<ul class="errorlist"><li>This field is required.</li></ul></li></ul> [23/Jul/2017 04:36:56] "POST /user/images/buildImage/ HTTP/1.1" 200 0

Answer 1

尝试更改您的视图方法，

def form_valid(self, form):
    instance = form.save(commit=False)
    instance.user = self.request.user
    instance.save()
    return HttpResponse(status=200)

Answer 2

实际上是在添加数据之前保存文件

def form_valid(self, form):
    instance = form.save(commit=False)
    instance.user = self.request.user
    instance.tagName = self.request.tagName
    instance.instance = str(self.request.instance_name)
    instance.save()
    return HttpResponse(status=200)

Answer 3

尝试为数据库操作设置try和cache 可能是缓存部分缓存了一些错误

<强>更新

try:
 "save to database code here" 
except Exception as e: 
  print "error here" print e

Answer 4

我的问题只是通过在我的模板中为例如输入字段提供title属性来解决。

将代码更新为：

<强> buildImage.html

<form class="form-horizontal" method="POST" id="dockerForm">
                    {% csrf_token %}
                    <fieldset>
                        {% if not objectlist %}
                            <h3><strong>Sorry!</strong> You couldn't have created any Instance yet! <strong>Let's <a href="{% url 'users:create' %}">Create One </a></strong></h3>
                        {% else %}
                        <div class="form-group">
                            <span class="col-md-1 col-md-offset-2 text-center"><label for="package">Select Your Instance:</label></span>
                            <div class="col-md-8">
                                <select class="form-control" name="instance" id="instance_id" title="Select your Instance">
                                    {% for element in objectlist %}
                                        <option value={{ element.name }}> {{ element.name }} </option>
                                    {% endfor %}
                                </select>
                                {% endif %}
                            </div>
                        </div>
                    </fieldset>
                </form>

<强> forms.py

class BuildImageForm(forms.ModelForm):
class Meta:
    fields = ('tagName', 'instance')
    model = Image

<强> views.py

    def post(self, request, *args, **kwargs):
    if request.method == 'POST':
        form = BuildImageForm(request.POST)
        if form.is_valid():
            data = form.cleaned_data
            form.instance.user = self.request.user
            form.instance.tagName = data['tagName']
            form.instance.instance = data['instance']
            form.save()
        else:
            print(form.errors)
    return HttpResponseRedirect(reverse('users:gui'))

POST请求成功完成但数据未保存在数据库中

4 个答案: