Django:如何从我的模型字段中获取值，并使用它来搜索在线图像，然后将图像url存储在模型中？

Question

使用Python3，我有一个带有动画应用程序的Django项目。这款动漫应用的模型如下：

class Anime(models.Model):
    id = UUIDField(primary_key=True, default=uuid.uuid4, editable=False)
    name = CharField(max_length=100, blank=False)
    genre = CharField(max_length=1000, blank=False)
    TV = "TV/Series"
    MOVIE = "Movie"
    SPECIAL = "Special"
    OVA = "OVA"
    UNKNOWN = "Unknown"
    MUSIC = "Music"
    ONA = "ONA"
    typeChoices = (
        (TV, "TV/Series"),
        (MOVIE, "Movie"),
        (SPECIAL, "Special"),
        (OVA, "OVA"),
        (ONA, "ONA"),
        (MUSIC, "Music"),
        (UNKNOWN, "Unknown")
    )
    animeType = CharField(max_length=10, choices=typeChoices, default=TV, blank="False")
    episodes = IntegerField()
    rating = FloatField()
    members = IntegerField()

    photoCover = ImageField(null=True, upload_to="img/covers", verbose_name="cover photo", blank=True)

我想获取动漫的名称(数据由csv或表单输入)，并在谷歌搜索中使用它，并获得搜索的第一张图像。我有这个代码可以帮助我做到这一点。

    import urllib
    from bs4 import BeautifulSoup

    searchName = searchName.replace(" ", "%20")
    searchName = searchName.replace("-", "%2D")
    searchName = searchName.replace("&", "%26")

    html = urllib.urlopen("http://www.google.com/search?q="+searchName+"&tbm=isch")
    soup = BeautifulSoup(html)

    img_links = soup.findAll("img", {"class":"rg_ic"})
    for img_link in img_links:
        print(img_link.img['src'])

我不知道的是，这是否有效，是否有效，我不知道在哪里应用代码。我希望使用img_link.img['src']作为Anime.photoCover.url的值，就像它在模板中一样。

Answer 1

使用下面的功能将url保存到图像字段中

import urllib
import os
from django.core.files import File
from . models import Anime

def create_anime_from_url(name, genre, animeType, episodes, rating, members, url):
      obj = Anime.objects.create(
        name=name, genre=genre, animeType=animeType,
        episodes=episodes, rating=rating, members=members
      )
      photoCover = urllib.request.urlretrieve(url)
      obj.photoCover.save(
          os.path.basename(url),
          # File(open(photoCover[0]))
          '  '
      )

如果您不想将图像url存储到文件系统中，那么您必须使用CustomFileSystemStorage来处理此功能。

class CustomFileSystemStorage(FileSystemStorage):

    def _save(self, name, content):
        if name.startswith('https://') or name.startswith('http://'):
              return name
        return super(CustomFileSystemStorage, self)._save(name, content)
    def url(self, name):
        if name.startswith('https://') or name.startswith('http://'):
              return name
        return super(CustomFileSystemStorage, self).url(name)

class Anime(models.Model):
# .............
    photoCover = ImageField(
       null=True, upload_to="img/covers",
       verbose_name="cover photo", blank=True,
       storage=CustomFileSystemStorage())
# .............