Where do I define the domain to be used by url_for() in Flask?

问题

When I call url_for(\'index\') it will generate \'/\' but there are times where I\'d like it to generate \'domain.tld/\' instead. I can\'t find in the documentation where I would specify this. Do I just need to do \'domain.tld/%s\' % url_for(\'index\')?

回答1:

url_for takes an _external keyword argument that will return an absolute (rather than relative) URL. I believe you will need to set a SERVER_NAME config key with your root domain to make it work correctly.

来源：https://stackoverflow.com/questions/12162634/where-do-i-define-the-domain-to-be-used-by-url-for-in-flask