We do something similar on KickoffLabs.
We require our customers to add CNAME that points back at our domain.
In your app, you need to use the Heroku API to add the domain to your
application.
Something like this:
heroku = Heroku::Client.new(username, password)
heroku.add_domain('your app name', 'example.com')
-Scott
--
Scott Watermasysk
Founder, KickoffLabs
http://www.kickofflabs.com
On Sunday, February 19, 2012 at 2:04 PM, Martin Streicher wrote:
> I have a Rails 3.2 app on Heroku.
>
> It accepts wildcards and subdomains, so each user can have a vanity
> subdomain, such as a.app.com (http://a.app.com), b.app.com
> (http://b.app.com), etc.
>
> What I want to do is let a user point example.com (http://example.com) to
> a.app.com (http://a.app.com).
>
> What would I have to change in the example.com (http://example.com) DNS
> config to make this
> work? And what do I change in my app?
>
> I am guessing example.com (http://example.com) is just a CNAME for a.app.com
> (http://a.app.com). But how does
> my app know what to do -- it needs to know that example.com
> (http://example.com) is really
> a.app.com (http://a.app.com). I suppose I could tell the app that -- the user
> could
> configure it.
>
> Just trying to figure out the proxy madness for this... since
> a.app.com (http://a.app.com) is a proxy to app.heroku.com
> (http://app.heroku.com). Does example.com (http://example.com) have to be a
> proxy to app.heroku.com (http://app.heroku.com)? I am guessing that wont work.
>
> Any ideas would be awesome.
>
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