ruby - rails I18n wrong parameter order in route (id as locale and id is nil) -

i want internationalize external code (see github) i18n rails. have read guide rails internationalization (i18n) api. translating text not problem, underlying code seems not work anymore in situations. unfortunately, i'm not rails/ruby expert.

from log:

fatal -- : actionview::template::error (no route matches {:action=>"edit", :controller=>"plans", :format=>nil, :id=>nil, :locale=>115} missing required keys: [:id]):

so problem is, parameter id (=115) passed locale instead id.

to i18n working added following code app/controllers/application_controller.rb:

...   before_action :set_locale    protected    def set_locale     i18n.locale = params[:locale] || i18n.default_locale   end    def default_url_options(options = {})     { locale: i18n.locale }.merge options   end ... 

moreover, wrapped original routes in config/routes.rb:

dmptool2::application.routes.draw   scope "(:locale)", locale: /en|de/     lot of original routes   end end 

therefore, question is, there missing route or there problem inside code or fault. besides translating text , buttons, haven't changed original code. original routes.rb can found on github (sry, can't post link because don't have enough reputation). suggestions / perfect.

edit think i'm little bit closer. maybe it's more clear, why isn't working. first of "full" stacktrace:

f, [2015-05-04t16:43:58.600384 #19289] fatal -- :  actionview::template::error (no route matches {:action=>"edit", :controller=>"plans", :format=>nil, :id=>nil, :locale=>#<plan id: 158, name: "asdfe", requirements_template_id: 59, solicitation_identifier: "",  submission_deadline: nil, visibility: :public, created_at: "2015-05-04 14:41:33", updated_at: "2015-05-04 14:43:48", current_plan_state_id: 300>} missing required keys: [:id]):     2:      3: plan "<%= @vars[:plan].name %>" has been completed.     4:      5: if have questions pertaining action, please visit dmp overview page @ <%= edit_plan_url(@vars[:plan]) %>     6:      7: <%= render :partial => 'users_mailer/notification_boilerplate.text.erb' %>   app/views/users_mailer/dmp_owners_and_co_committed.text.erb:5:in `_app_views_users_mailer_dmp_owners_and_co_committed_text_erb__754483862330985648_69917281861000'   app/mailers/users_mailer.rb:32:in `notification'   app/models/concerns/plan_email.rb:50:in `block in email_dmp_saved'   app/models/concerns/plan_email.rb:49:in `email_dmp_saved'   app/models/plan_state.rb:31:in `update_current_plan_state'   app/controllers/plan_states_controller.rb:97:in `create_plan_state'   app/controllers/plan_states_controller.rb:73:in `committed' 

if hit "done" button on webpage, function committed called, wich calls create_plan_state(:committed). within definition of create_plan_state, there statement plan_state = planstate.create( plan_id: @plan.id, state: state, user_id: current_user.id). triggers callback after_create: update_current_plan_state:

def update_current_plan_state   #update current plan pointer in plan model   p = self.plan   p.current_plan_state_id = self.id   p.save! end 

now, triggers after_save: email_dmp_saved:

def email_dmp_saved ... if current_state.state == :committed   users = self.users   users.delete_if {|u| !u[:prefs][:dmp_owners_and_co][:committed]}   users.each |user|     usersmailer.notification(         user.email,         "plan completed: #{self.name}",         "dmp_owners_and_co_committed",         {:user => user, :plan => self } ).deliver   end 

i think definition of notification not important. 3rd last line calls "dmp_owners_and_co_committed", defined as:

hello <%= @vars[:user].full_name %>,  plan "<%= @vars[:plan].name %>" has been completed.  if have questions pertaining action, please visit dmp overview page @ <%= edit_plan_url(@vars[:plan]) %>  <%= render :partial => 'users_mailer/notification_boilerplate.text.erb' %> 

and in _notification_boilerplate.text.erb there is:

you may change notification preferences @ <%= edit_user_url(@vars[:user].id) %>#tab_tab2 . 

i think problem edit_plan_url , edit_user_url. because if add random text parameter works...:

edit_plan_url("de",@vars[:plan]) , in _notification: edit_user_url("de",@vars[:user].id) 

the question is, why working? there way print created route? because in stacktrace route doesn't match because format , id nil. want see new route in order know random string "de" placed.

looks routes expecting 2 params, , ordering comes. there's way avoid using named hash params passed:

edit_plan_url(id: @vars[:plan].id) 

the rails automagic use symbol identify param , avoid problem.