Full URL with url_for in Rails

Question

How can I get a full url in rails?

url_for @book is returning only a path like /book/1 and not www.domain.com/book/1

Thanks (and sorry if the answer is obvio

Answer 1

In Rails 4, url_for only takes one argument, so you need to pass an array with an explicit hash inside for the only_path option.

Good:

url_for([@post, @comment, {only_path: true}])

Bad:

url_for(@post, @comment, {only_path: true})
url_for([@post, @comment], {only_path: true})

From the source, url_for with an Array input just calls:

polymorphic_url([@post, @comment], {only_path: true})

as shown in @moose's answer.

As noted by @lime, only_path is generally not needed for polymorphic_url since you distinguish that with the _url _path suffixes.