Question

我有这段代码从用户发布的网址中提取图片。我没有收到任何错误，但我不确定如何将提取的图像显示到我的index.html。在这里;是我的views.py

class PostCreateView(CreateView):
    model = Post
    form_class = PostForm
    template_name = 'main/add_post.html'

    def form_valid(self, form):
        self.object = form.save(commit=False)
        # any manual settings go here
        self.object.moderator = self.request.user
        url = self.request.GET.get('url', False)
        if url:
            image = extract(url)
        self.object.save()
        return HttpResponseRedirect(reverse('post', args=[self.object.slug]))

    @method_decorator(login_required)
    def dispatch(self, request, *args, **kwargs):       
        return super(PostCreateView, self).dispatch(request, *args, **kwargs)

这里我有image = extract（url） extract方法来自media.py。因为我没有得到任何错误，我假设至少语法是正确的。现在我想将该图像显示到我的index.html。我认为post.image会完成这项工作，但没有任何显示。

在这里;是我的media.py

import json
import urllib2
from urllib2 import Request
from goose import Goose

def get_content(url):
    """This function is intended to return content from url.
    :param url: URL to get content
    :return: The response from url
    """
    req = urllib2.Request(url, headers={'User-Agent': "Magic Browser"})
    response = urllib2.Request.urlopen(req).read()
    return response 


def extract(url):
    url = get_content(url)
    g = Goose()
    article = g.extract(url=url)
    resposne = {'image':article.top_image.src}
    return json.dumps(resposne)

my models.py以防万一

class Post(models.Model):
    category = models.ForeignKey(Category)
    pub_date = models.DateTimeField(auto_now_add = True)
    title = models.CharField(max_length = 100)
    content = FroalaField()
    url = models.URLField(max_length=250, blank=True, null=True)
    moderator = models.ForeignKey(User)
    rank_score = models.FloatField(default= 1)

    views = models.IntegerField(default=0)
    image = models.ImageField(upload_to="images",blank=True, null=True)
    slug = models.CharField(max_length=100, unique=True)

    objects = models.Manager()

Answer 1

您已从请求数据中提取了网址并检索了图片，但您根本没有做任何事情。我猜你需要把它保存在Post对象的某个地方。

显示来自createView的数据

1 个答案: