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I am trying to put a Rails link_to statement inside a Mailer email that includes the full-path (ie - http://localhost/contacts/id/confirm ). The link_to statement that I am trying works in my standard View in /pages/options, but not in the Mailer email. Here is my /pages/options Controller code: class PagesController < ApplicationController def options end end And here's the pages/options View: <div> <%= link_to "here", :controller => "contacts", :action => "confirm", :only_path => false, :id => 17 %> </div> When I put this link into the following mailer (welcome_email.html.rb), I am getting the error below. Any help with this will be greatly appreciated. <!DOCTYPE html> <html> <head> <meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> </head> <body> <%= link_to "here", :controller => "contacts", :action => "confirm", :only_path => false, :id => 17 %> </body> </html> The error message: RuntimeError in Contacts#create Showing C:/Documents and Settings/Corey Quillen/My Documents/Dev/Dev Projects/my_project Project/my_project/app/views/user_mailer/welcome_email.html.erb where line #7 raised: Missing host to link to! Please provide :host parameter or set default_url_options[:host] Extracted source (around line #7): 4: <meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> 5: </head> 6: <body> 7: <%= link_to "here", :controller => "contacts", :action => "confirm", :only_path => false, :id => 17 %> 8: </body> 9: </html>

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