Tipfy:如何在模板中显示blob? [英] Tipfy: How to display blob in template?
问题描述
greeting.avatar = db.Blob(avatar)
什么是模板标签显示一个blob(这里是图片)?
在这种情况下,blob是一个很好的图像。只需使用 images.get_serving_url(blob_key)
,你很高兴。我已经使用了这个功能,相信我,这对于提供图片来说非常棒。只需将 = sxx
附加到其中 xx
是您想要的像素大小的网址中。它会自动调整图像大小并提供它。
如果blob不是图片,那么您很容易找到一条简单的出路。也许可以使用 BlobReader
做出一个字符串表示并输出它?
然而,如果它不是图像或文本,您可能想要写入HTML吗?
Given is on gae using tipfy (python) the following model:
greeting.avatar = db.Blob(avatar)
What is the template-tag to display a blob (here image)?
In this case the blob is an an image, which is great. Just use images.get_serving_url(blob_key)
and you're happy. I've used this function, and trust me, it is awesome for serving images. Just append =sxx
to the url where xx
is the pixel size you want. It automatically resizes the image and serves it.
If the blob isn't an image, then you're out of luck w.r.t an easy way out. Maybe use the BlobReader
to make a string representation and output it?
If it isn't an image or text, though, what could you possibly want to write to HTML?
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