Question

假设views.py中的相应函数看起来像

from PIL import Image
def get_img(request, img_source)
    base_image = Image.open(os.getcwd() + '/deskprod/media/img/'+ img_source + ".png")
    #Some editing of base_image done with PIL that prevents image from being directly loaded in html
    return render_to_response('get_img.html', {
        'base_image': base_image},
        context_instance=RequestContext(request))

如何在base_image模板中显示get_img.html？

Answer 1

您应该处理图像，将其保存在本地磁盘上，然后发送一个或更多的路径，例如媒体网址，它将与该图像对应，作为html模板的上下文。您需要配置django服务器以提供静态和媒体文件来执行此操作，并配置在生产环境中提供这些文件。在这里阅读更多https://docs.djangoproject.com/en/1.9/howto/static-files/

然而，如果您不能或者实际上不想在本地保存它，那么应该可以创建动态图像并使用PIL与django一起使用。它会像你应该添加的代码一样。

response = HttpResponse(mimetype="image/png")
base_image.save(response, "PNG")
return response

还可以查看更多信息http://effbot.org/zone/django-pil.htm，虽然我没有测试，但它可能会有效。

Answer 2

settings.py

   'DIRS': [os.path.join(BASE_DIR, 'templates')], # add this line in TEMPLATES
    MEDIA_ROOT = os.path.join(BASE_DIR, 'media/images')
    MEDIA_URL = '/media/images/'

添加用于存储manage.py的模板和媒体/图像目录。

urls.py

urlpatterns = [

                  url('polls/', views.get_img, name="polls"),


              ] + static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)

views.py

from django.conf import settings

def get_img(request):
    path = settings.MEDIA_ROOT
    img_list = os.listdir(path + "/")
    print(img_list[0])
    base_image = "http://127.0.0.1:8000/media/images/" + img_list[0]
    content = {"base_image": base_image}
    return render(request, 'get_img.html', content)

get_img.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>drop_down</title>
</head>
<body>

  {{base_image}}
  <img src="{{base_image}}" style="width: 20%; height: 20%;" alt="{{base_image}}">

</body>
</html>

Answer 3

I think you must save image (write it to temp file) in static directory of project and in template use static command and image file name to display it.

如何将图像传递给Django中的模板？

3 个答案: