在一个Flask响应中返回一个下载和渲染页面 [英] Return a download and rendered page in one Flask response

问题描述

我想返回一个呈现的页面和一个可下载的文件作为对请求的响应。我试图返回这两个响应的元组，但它不起作用。

I want to return a rendered page and a downloadable file as a response to a request. I've tried to return a tuple of both responses, but it doesn't work. How can I serve the download and the page?

return response, render_template('database.html')
return render_template('database.html'), response

Flask能够处理这种情况吗？看起来像一个普遍的问题，我只是想发回一个文件下载，然后呈现该页面。

Is Flask capable of handling such a scenario? Seems like a commonplace problem, I simply want to send a file back for download, then render the page.

推荐答案

您无法返回对单个请求的多个响应。相反，生成和存储文件的地方，并与其他路线。

You cannot return multiple responses to a single request. Instead, generate and store the files somewhere, and serve them with another route. Return your rendered template with a url for the route to serve the file.

@app.route('/database')
def database():
    # generate some file name
    # save the file in the `database_reports` folder used below
    return render_template('database.html', filename=stored_file_name)

@app.route('/database_download/<filename>')
def database_download(filename):
    return send_from_directory('database_reports', filename)

在模板中，使用 url_for 来生成下载网址。
$ b

In the template, use url_for to generate the download url.

<a href="{{ url_for('database_download', filename=filename) }}">Download</a>

这篇关于在一个Flask响应中返回一个下载和渲染页面的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！