how to pass params to link_to root_url when using subdomain

Question

I am trying to get the link to go to

admin.mysite.com/articles/new 

and currently am using

link_to 'new article', [root_url(subdomain: 'admin), 'articles/new'].join

but am sure there's a better (rails) way to do it. Any ideas?

Answer 1

You can use the URL helper with subdomain as below:

link_to 'new article', new_article_url(subdomain: 'admin')

Assuming new_article_url will points to articles/new.