ActionView::TemplateError (Missing host to link to! Please provide :host parameter or set default_url_options[:host]) on line #4 of app/views/user_mailer/project_invitation.html.haml:
1: Welcome #{@email} !
2:
3: #{@sender} sent you an invitation to calendar project.
4: = link_to 'Go to Sign Up Page', new_registration_url
Processing ProjectInvitationsController#create (for 119.82.99.147 at 2010-05-26 10:16:47) [POST] Parameters: {"project_invitation"=>{"invitee"=>"testsup123@gmail.com"}, "commit"=>"Send Invitation", "project_id"=>"eJxj4VCSzAlLc4k0C3NOCfcsLo6orCw3tYwEAE9LB04|3a82c45f88a2d056eebceba3d783897e318aac77", "action"=>"create", "authenticity_token"=>"CCqLTKVl6Nvy8g5bXUcsvhW48WLZuZAkAo/ykVgX6Es=", "controller"=>"project_invitations"}
ActionView::TemplateError (Missing host to link to! Please provide :host parameter or set default_url_options[:host]) on line #4 of app/views/user_mailer/project_invitation.html.haml: 1: Welcome #{@email} ! 2: 3: #{@sender} sent you an invitation to calendar project. 4: = link_to 'Go to Sign Up Page', new_registration_url