如何让Google App Engine具有从数据库下载内容的下载链接？ [英] How do I let Google App Engine have a download link that downloads something from a database?

问题描述

好吧，让我们说我有一个数据库

Okay, let's say I have a database

Class Content(db.Model):
    code=db.TextProperty()

我想在网页上提供一个下载链接， 码。我怎么做到这一点？

And I wanted to supply a download link on the webpage that would download the content of code. How would I do this?

我正在使用python和jinja2

I am using python and jinja2

推荐答案

您将创建一个视图，返回代码的内容（假设您使用的是webapp框架）：

You'd create a view that sends back the content of code (assuming that you're using the "webapp" framework):

class MainPage(webapp.RequestHandler):
    def get(self):
        content = Content.get(…)
        self.response.headers['Content-Type'] = 'application/octet-stream'
        self.response.out.write(content.code)

请注意，您可能希望将 Content-Type 设置为更具体的内容。另外，如果你想强制浏览器下载文件（而不是显示文件），你可以设置 Content-Disposition 头：标题['Content-Disposition'] ='附件; filename = some_filename.txt'。

Note that you might want to set the Content-Type to something more specific. Also, if you want to force the browser to download the file (instead of possibly displaying the file), you can set the Content-Disposition header: headers['Content-Disposition'] = 'attachment; filename=some_filename.txt'.

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