flask - <img src如何指向并一个mongodb 的图片字段？

Question

flask+mongoengine做一小站，model中使用FileField字段类型存储上传的图片到文档，该文档记录其它文本字段已经以{{ xx.字段 }}的形式显示在html模板页中，图片该怎么显示呢？

img src={{ xx.图片字段 }}...>肯定不行，源码显示为：<GridFSProxy:%20018560.jpg> .net中的基本思路是建一个一般处理程序页，将流输出为图片，再作为src属性，flask或Python中没写过，有谁能指点一下？

Answer 1

Another way to solve the problem is: through src="/img/{{xx.image field.grid_id}}/" Defined as a public View Get the actual image stored through GridFS through the passed string objectid and output

from flask import Response
from bson.objectid import ObjectId
from mongoengine import *
app.route('/img/<oid>/')
def get_img(oid=None):
    if oid:
        proxy = GridFSProxy(grid_id=ObjectId(oid))
        return Response(proxy.read(),mimetype='image/jpeg')

Answer 2

nginx+mongodbgridfs plug-in. No?

Answer 3

 <img src="data:image/jpeg;base64,{{xx.图片字段base64编码}}" />

Similarly applies to other encodings and formats, but note that older browsers do not support this method.