Django上传并显示图片

$django-admin startproject a

$cd a
$python manage.py startapp b

INSTALLED_APPS = (
    ‘django.contrib.admin‘,
    ‘django.contrib.auth‘,
    ‘django.contrib.contenttypes‘,
    ‘django.contrib.sessions‘,
    ‘django.contrib.messages‘,
    ‘django.contrib.staticfiles‘,
    ‘b‘,
)

from __future__ import unicode_literals
from django.db import models
# Create your models here.
class IMG(models.Model):
    img = models.ImageField(upload_to=‘upload‘)

Django 1.7及以上的版本需要用以下命令
python manage.py makemigrations
python manage.py migrate

Django 1.7以下用以下命令
python manage.py syncdb

from django.shortcuts import render
from b.models import IMG
# Create your views here.
def uploadImg(request):
    if request.method == ‘POST‘:
        new_img = IMG(
            img=request.FILES.get(‘img‘)
        )
        new_img.save()
    return render(request, ‘b/uploadimg.html‘)

def showImg(request):
    imgs = IMG.objects.all()
    content = {
        ‘imgs‘:imgs,
    }
    return render(request, ‘b/showimg.html‘, content)

from django.conf.urls import url
from django.contrib import admin
from b import views
from django.conf.urls.static import static
from django.conf import settings


urlpatterns = [
    url(r‘^admin/‘, admin.site.urls),
    url(r‘^upload‘, ‘b.views.uploadImg‘),
    url(r‘^show‘, ‘b.views.showImg‘),
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

MEDIA_URL = ‘/media/‘  URL的映射，前后要加上‘/’ 表示从根目录开始，比如“/site_media/”，加上这个属性之后，静态文件的链接前面会加上这个值可以随便写但不能不写
MEDIA_ROOT = os.path.join(BASE_DIR, ‘media‘).replace(‘\\‘, ‘/‘) 文件上传的根路径

<form method="POST" enctype="multipart/form-data">
{% csrf_token %}
<input type="file" name="img">
<button type="submit">上传</button>
</form>

{% for img in imgs %}
<img src=‘{{ img.img.url }}‘ />
{% endfor %}

$python manage.py runserver