Multi tool use

Rails *Completed 406 Not Acceptable" in production ..working in Staging

I am stuck with an error "Completed 406 Not Acceptable" in the production server which I am not facing in the staging server .

Same code is working fine in staging but not working in production .Both environment has same gems installed . I am using a rails version 3.0.10.

In my production environment , the GET request is processed as a html but in staging it is processed as js .I have defined the respond_to block only for js format . I am not sure why it is behaving differently in two environments.

Also I have tried adding the defaults format as js in the routes.rb but that also is not working.

match 'releases/cycle_paginate', :to => 'releases#cycle_paginate', :defaults => { :format => 'js' }


But this is also not working .

Below is the log for production and staging .

Production:

Started GET "/releases/cycle_paginate/2?id=4" for 10.30.10.67 at Wed Aug 14 07:13:45 -0400 2013
Processing by ReleasesController#cycle_paginate as JS
Parameters: {"id"=>"4", "page"=>"2"}


Staging:

Started GET "/releases/cycle_paginate/2?id=53" for 10.30.10.67 at Wed Aug 14 06:42:45 -0400 2013
Processing by ReleasesController#cycle_paginate as HTML
Parameters: {"id"=>"53", "page"=>"2"}


Controller:

def cycle_paginate

@release = Release.find(params[:id])

@cycles =
@cycles = Kaminari.paginate_array(@release.cycles)
.page(params[:page])
.per(5)
last_page = @cycles.num_pages
if params[:page].to_i > last_page
@cycles = @cycles.page(last_page)
else
@cycles = @cycles.page(params[:page].presence || 1)
end
respond_to do |format|
format.js
end
end


This is making me mad. Appreciate your help.

Routes.rb

`Tcm::Application.routes.draw do match "login", :controller => "user_sessions", :action => "create", :as => "login"
match "logout", :controller => "user_sessions", :action => "destroy", :as => "logout"
resources :ic_tree_items do
get :children, :on => :member
get :nonmem_rel_children, :on => :member
get :release_children, :on => :member
get :cycle_children, :on => :member
end
resources :users
resources :ic_revisions
resources :tester_release_assignments
resources :roles
resources :project_platform_config_assignments
resources :platform_configs
resources :user_sessions

match 'ic_runs/execute_multiple', :to => 'IcRuns#execute_multiple', :as => "execute_multiple_ics", :via => :put

resources :ic_runs
resources :reports
resources :testruns

match "cycles/add_ics", :to => "cycles#add_ics"

resources :cycles
resources :releases do
get :autocomplete_user_name, :on => :collection
end
resources :projects
resources :tasks
resources :steps
resources :asserts

match 'releases/mass_assign', :to => 'Releases#mass_assign', :as => 'mass_assign_releases', :via => :post
match 'ics/mass_action', :to => 'Ics#mass_action', :as => 'mass_action_ics', :via => :post
match 'ics/filter' ,:to=>'Ics#filter',:via=> :post
match 'taggings/selection_options', :to => 'Taggings#selection_options', :as => 'selection_option_taggings',:via => :post
match 'tags/filter',:to=>'Tags#filter',:via=> :post
resources :ics
resources :tags

root :to => "Home#index"
match ':name' => 'Projects#show'
match 'ic_revisions/update', :to => 'ic_revisions#update'
match 'ic_revisions/clone_task', :action => "clone_task", :controller=>"ic_revisions"
match 'ic_revisions/definition_textbox', :to => 'ic_revisions#definition_textbox'
match 'tasks/destroy', :action => "destroy", :controller=>"tasks"
match 'steps/destroy', :action => "destroy", :controller=>"steps"
match 'asserts/destroy', :action => "destroy", :controller=>"asserts"
match 'cycles/:id/delete', :action => "destroy", :controller=>"cycles"
match 'ic_revisions/manage/:ic_id', :to => 'ic_revisions#index', :as => "manage_ic_revisions"
match 'cycles/:id/add_ics', :to => 'cycles#add_ics'
match 'cycles/del_cycle_ic', :to => 'cycles#del_cycle_ic'
match 'cycles/add_ic_run', :action => "add_ic_run", :controller=>"cycles", :via => :post
match 'releases/:id/add_ics', :to => 'releases#add_ics'
match 'users/lead/:id', :to => 'users#show_lead', :as => "lead"
match 'users/tester/:id', :to => 'users#show_tester', :as => 'tester'
match 'users/edit/:id', :to => 'users#edit', :as => 'users_edit'
match 'cycles/add_cq', :to => 'cycles#add_cq',:as=>'cycles_add_cq'
match 'ic_runs/update_ics', :to => 'ic_runs#update_ics'
match 'ic_runs/cycle/:cycle_id', :to => 'ic_runs#cycle', :as => 'cycle_ic_runs'
match 'ic_runs/edit_result', :to => 'ic_runs#edit_result'
match 'ic_runs/ic_run_list/:id', :to => 'ic_runs#ic_run_list', :as => 'ic_runs_list'
match 'reports',:to=>'reports#index'
match 'reports/update_releases', :to=>'reports#update_releases'
match 'reports/update_cycles', :to=>'reports#update_cycles'
match 'reports/show', :to=> 'reports#export_reports'
match 'ics/on_update_root', :to=>'ics#on_update_root'
match 'ic_runs/export_all', :to => 'ic_runs#export_all'
match 'ics/on_update_suite', :to=>'ics#on_update_suite'
match 'ic_runs/destroy', :to => 'ic_runs#destroy', :key=>:ic_run_ids
match 'cycles/:id/clone', :action => "clone", :controller=>"cycles"
match 'releases/:id/clone', :action => "clone", :controller=>"releases"
match 'cycles/:id/delete_ics', :action => "delete_ics", :controller=>"cycles"
match 'releases/update_testers', :to => 'releases#update_testers'
match 'releases/update_testers(/:page)', :action => "update_testers", :controller=>"Releases", :page => :page
match 'releases/cycle_paginate', :to => 'releases#cycle_paginate'
match 'releases/cycle_paginate(/:page)', :action => "cycle_paginate", :controller=>"Releases", :page => :page
match 'ics/new_ics', :to =>'ics#', :action => "new_ics", :controller => "Ics"
match 'ics/obsolete_ics', :to=>'ics#', :action=>"obsolete_ics", :controller=>"Ics"
match 'ics/new_ic_stub', :to=>'ics#', :action=>"new_ic_stub", :controller=>"Ics"
match 'ics/index', :to=>'ics#', :action=>"index", :controller=>"Ics"
match 'releases/rel_all_ics', :action => "rel_non_member", :controller => "Releases"
match 'cycles/cycle_non_member', :action=>"cycle_non_member", :controller=>"Cycles"
end


`

2 Answers
2

Finally I got the solution after a lot of debugging ..

My request accept header was expecting a HTML while server was returning a Javascript response so that was not acceptable by browser.

In my case a Javascript file was missing the javascript_include_tag in the application.html.erb .The Javascript missing was jquery_ujs.js .Basically this sets the accept header for ajax loading .The Javascripts included in this tag will be cached and stored.
So I added the missing Javascript and removed the cached folder and YIPPEE, my problem got resolved.

I will give a small example that I learnt somewhere from a blog. It seems that it will be helpful for others to understand the 406 error.

406 error can be understood as below:
Suppose I've asked you for a book to read, but I can only read books in English and French. If you only have books in German, you would give me an empty response with a "406 - not acceptable" status.

406 is the server telling you "I have what you asked for, but you won't accept them".

That's what Accept headers in the http request are for. For instance, if the HTTP request includes directions that it will only accept "img/jpg" MIME type, the server would send a 406 status if the file requested is an Excel spreadsheet.

To diagnose:

"406 not acceptable" is an unusual status code - the most common are 200, 404, 500, 301. You only see a 406 when something is wrong with the server, usually something silly but hard to diagnose.

I had the same problem. My issue was that I was making an HTML request, but my respond_to block was only accepting js.

so I needed to change this:

respond_to do |format|
format.js
end


to this:

respond_to do |format|
format.html
format.js
end


And then it all worked again.

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