将.txt文件上传到django中的textarea？

Question

我是 Django 新手。我使用 django 表单小部件为网站制作了 textareas。

我想添加一个文件上传，以便能够上传一个将插入文本区域的 .txt 文件。我该怎么办？

我查看了https://docs.djangoproject.com/en/2.1/topics/http/file-uploads/的文档

如何将此代码合并到我已经编写的代码中？

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

模型.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

首先你应该附加forms.FileField来使用Django框架上传机制。

在处理请求时，任何 Django 表单都有其lifecycle。当用户上传 .txt 文件时，您可以像这样在save 方法中捕获它：

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)