Question

我是Django的新手。我已经使用django表单小部件为网站制作了textareas。

我想要添加一个文件上传功能，以便能够上传将插入文本区域的.txt文件。我该怎么办？

我已经检查了https://docs.djangoproject.com/en/2.1/topics/http/file-uploads/上的文档

如何在已编写的代码中合并此代码？

forms.py

class HomeForm(forms.ModelForm):
    textInput = forms.CharField(required=True, widget=forms.Textarea(
        attrs={
            'class': 'form-control',
            'placeholder': 'Input text...',
            'id': 'input1'
        }
    ))

    class Meta:
        model = Post #import Post model from home models.py
        fields = {'textInput',} #comma required to ensure tuple capability

models.py

class Post(models.Model):
    post = models.CharField(max_length=1000)
    user = models.ForeignKey(User, on_delete=models.PROTECT) #default .CASCADE
    date = models.DateTimeField(auto_now=True) #data saved into db

views.py

class HomeView(TemplateView):
    template_name='home/home.html'

    def get(self, request):
        form = HomeForm

        posts = Post.objects.all()
        args = {'form': form, 'posts': posts}

        return render(request, self.template_name, args)


    def post(self, request):
        form = HomeForm(request.POST)
        if form.is_valid():
            post = form.save(commit=False) #saves data (thanks to the model form)
            #comit is false as object still needs to be modified
            post.user = request.user
            post.save()
            text = form.cleaned_data['textInput'] #anticipates SQL injection
            #return redirect('home:home')

        args = {'form': form, 'text': text}
        return render(request, self.template_name, args)

Answer 1

首先，您应该附加forms.FileField才能使用Django框架上传机制。

在处理请求时，任何Django表单都有其lifecycle。用户上传.txt文件时，可以通过save这样的方法来捕获它：

class HomeForm(forms.ModelForm):
    ...
    text_file = forms.FileField()
    ...

    def save(self, commit=True):
        ...
        # check if text_file contains content
        text_file_data = self.cleaned_data.get("text_file")
        ...
        if text_file_content:
            # self.instance is instance of "Post" model
            self.instance.post = text_file_content
        ...
        return super().save(commit)

将.txt文件上传到Django的textarea中？

1 个答案: