python中Django文件上传方法详解

MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

import os
from django.db import models
from django.utils.timezone import now as timezone_now
def upload_to(instance, filename):
    now = timezone_now()
    base, ext = os.path.splitext(filename)
    ext = ext.lower()
    return f'quotes/{now:%Y/%m/%Y%m%d%H%M%S}{ext}'
class Quote(models.Model):
    class Meta:
        verbose_name = 'quote'
        verbose_name_plural = verbose_name
    author = models.CharField('author', max_length=200)
    quote = models.TextField('quote')
    picture = models.ImageField('picture', upload_to=upload_to, blank=True, null=True)
    def __str__(self):
        return self.quote

from django import forms
from .models import Quote
class QuoteForm(forms.ModelForm):
    class Meta:
        model = Quote
        fields = '__all__'

from django.shortcuts import render, redirect
from .forms import QuoteForm
def add_quote(request):
    form = QuoteForm()
    if request.method == 'POST':
        form = QuoteForm(
            data=request.POST,
            files=request.FILES
        )
        if form.is_valid():
            form.save()
            return redirect('quote:add_quote')
    else:
        return render(request, 'quotes/add_quote.html', {
            'form': form
        })

<form action="{% url 'quote:add_quote' %}" method="post" enctype="multipart/form-data">
    {% csrf_token %}
    {{ form.as_p }}
    <button type="submit">save</button>
</form>

在app的目录的urls.py添加
from django.urls import path
from quotes.views import add_quote
app_name = 'quote'
urlpatterns = [
    path('add/', add_quote, name='add_quote')
]

from django.urls import path, include
urlpatterns = [
    path('quotes/', include('quotes.urls', namespace='quote'))
]

def file_download(request):
 # do something...
 with open('file_name.txt') as f:
  c = f.read()
 return HttpResponse(c)