django 脆皮表单文件上传

Question

我无法使用 django 清晰的表单正确上传图像字段。表单和页面上的其他所有内容都可以正常工作，但图像字段不会出错或保存，它只是通过它。我可以通过管理员添加图像就好了，它只会在我的脆表上失败。

#views.py
@login_required
def dashboard(request, **kwargs):
    '''
    perform managerial and administrative tasks for a blog. Only
    available to the blog owner
    '''
    alert_message = ""
    status = ""

    blog_slug = kwargs['blog']
    blog = get_object_or_404(PersonalBlog, slug=blog_slug)

    # handle the form submit to update blog data
    form = BlogEditForm(instance=blog)
    if request.method == "POST":
        if blog.owner == request.user:
            form = BlogEditForm(request.POST, instance=blog)

            if form.is_valid():
                form.save()

                alert_message = "Your blog data has been updated successfully"
                status = "saved"
            else:
                alert_message = "There was a problem saving the data you entered. Please correct the errors above."
                status = "error"
        else:
            alert_message = "You do not have access to update this blog's information."
            status = "error"


    return render(request, "blogcontent/dashboard.html", {'alert_message':alert_message,
                                                          'status':status, 'form':form})


#forms.py
class BlogEditForm(ModelForm):
    description = forms.CharField(widget = forms.Textarea())
    twitter = forms.CharField(required=False, help_text="show twitter feed, and allow people to interact with you on twitter")
    twitter_widget_id = forms.CharField(required=False, help_text="required to show a timeline widget for your twitter account. " + \
                                                  "<span class='glyphicon glyphicon-question-sign'></span>")
    instagram = forms.CharField(required=False, help_text="show instagram feed on your blog page")
    disqus = forms.CharField(required=False, help_text="allow comments at the bottom of your blog posts")

    class Meta:
        model = PersonalBlog

    def __init__(self, *args, **kwargs):
        super(BlogEditForm, self).__init__(*args, **kwargs)
        self.helper = FormHelper()
        self.helper.layout = Layout(
            Fieldset(
                '<h2 class="text-center">Edit data about your blog</h2>',
                Field('owner', type="hidden"),
                Field('title', type="hidden"),
                Div('description', css_class="col-md-12"),
                Div('twitter', css_class="col-md-6"),
                Div('twitter_widget_id', css_class="col-md-6"),
                Div('instagram', css_class="col-md-6"),
                Div('disqus', css_class="col-md-6"),
                Div('logo', css_class="col-md-12"),
            ),
            ButtonHolder(
                Submit('submit', 'Update Info', css_class='btn-lg'),
                css_class="text-center"
            ),

        )

#dashboard.html
<form method="post" enctype="multipart/form-data">
                        {% crispy form %}
                    </form>

Answer 1

啊，我知道这会很愚蠢。我没有将 request.FILES 附加到 form.save() 对象。

form = BlogEditForm(request.POST, request.FILES, instance=blog)

Answer 2

您是否尝试过更改：

<form method="post" enctype="multipart/form-data">
    {% crispy form %}
</form>

只是：

{% load crispy_forms_tags %}
{% crispy form %}

同样在您的代码中，您正在调用：

if form.is_valid():
    form.save()

您不想save() 表单。您想将表单数据保存到模型实例。所以create() 使用表单数据的模型。这可能也是原因。 Forms 仅用于保存数据，直到您清理它并使用 model 将其保存到数据库中。