上傳圖片解析：
SAE的設置指引如下：
在setttings.py中添加以下配置。
# 修改上傳時文件在內存中可以存放的最大size為10mFILE_UPLOAD_MAX_MEMORY_SIZE = 10485760# sae的本地文件系統是只讀的，修改django的file storage backend為StorageDEFAULT_FILE_STORAGE = 'sae.ext.django.storage.backend.Storage'# 使用media這個bucketSTORAGE_BUCKET_NAME = 'media'# ref: https://docs.djangoPRoject.com/en/dev/topics/files/
分兩種情況：
class Picture(models.Model): """docstring for Picture""" user = models.ForeignKey(Customer) image = ThumbnailImageField(upload_to='goods_photo')
然后你只需要在視圖函數里面這么寫就ok了，這時候SAE是可以自動幫你幫圖片上傳到storage中的domain為media下的goods_photo文件夾下了（記得在SAE上激活storage并建立一個名為你在settings.py設定的STORAGE_BUCKET_NAME，還有在這個domain下面建立一個名為你設定的upload_to的值的文件夾）
def upload_photo(request): f = request.FILES['upload_file'] name=copy.copy(f.name) p = Picture() p.image = f user_id = request.POST['user_id'] user = Customer.objects.get(pk=user_id) p.user = user p.save()
參考sea的storage的api文檔，鏈接
# ThumbnailImageField.pyfrom django.db.models.fields.files import ImageField,ImageFieldFilefrom PIL import Imagedef _add_thumb(s): parts = s.split(".") parts.insert(-1,"thumb") if parts[-1].lower() not in ['jpeg','jpg']: parts[-1]='jpg' return ".".join(parts)class ThumbnailImageFieldFile(ImageFieldFile): def _get_thumb_url(self): return _add_thumb(self.url) thumb_url = property(_get_thumb_url) def save(self,name,content,save=True): super(ThumbnailImageFieldFile, self).save(name,content,save) def delete(self,save=True): super(ThumbnailImageFieldFile, self).delete(save) class ThumbnailImageField(ImageField): """docstring for ThumbnailImageField""" attr_class = ThumbnailImageFieldFile def __init__(self,*args,**kwargs): super(ThumbnailImageField, self).__init__(*args,**kwargs)
def upload_photo(request): f = request.FILES['upload_file'] name=copy.copy(f.name) p = Picture() p.image = f user_id = request.POST['user_id'] user = Customer.objects.get(pk=user_id) p.user = user p.save() c = sae.storage.Connection() bucket = c.get_bucket('media') obj = bucket.get_object_contents("goods_photo/"+name) image = Image.open(StringIO(obj)) image.thumbnail((90,90),Image.ANTIALIAS) imgOut = StringIO() image.save(imgOut, 'jpeg') img_data = imgOut.getvalue() bucket.put_object('goods_photo/'+_add_thumb(name), img_data) imgOut.close()
視圖函數詳細講解：
p.save()會消耗掉request.FILES['upload_file']，所以建議的做法是先保存這個文件到storage中，然后再從storage中把這個圖片取出來進行處理
name=copy.copy(f.name)，之所以使用淺拷貝也是因為 p.save()會消耗掉request.FILES['upload_file']，直接name=f.name的話拿到的name就不知道是什么了，當然你也可以使用deepcopy，但是沒必要，因為name就是一個字符串
bucket.get_object_contents("goods_photo/"+name)，sea的storage不支持直接的目錄結構，但可以通過文件名來模擬目錄結構
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