Get states based country:
@states = State.joins("INNER JOIN countries c on c.id = states.country_id").where("c.id LIKE ?", params[:country_id])
Get county based state name:
@countries = Country.joins("INNER JOIN states s on s.country_id = countries.id").where("LOWER(s.name) LIKE ?", "%params[:name].downcase%")
Set default JSON at routes:
resources :states, :defaults => { :format => 'json' }
resources :countries, :defaults => { :format => 'json' }
get '/get_states/:country_id' => 'states#get_states_based_county', :defaults => { :format => 'json' }
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resources routes
# resources :users, :defaults => { :format => 'json' }
get '/users' => 'users#index', :defaults => { :format => 'json' }
get '/user/:id' => 'users#show', :defaults => { :format => 'json' }
post '/user' => 'users#create', :defaults => { :format => 'json' }
put '/user/:id' => 'users#update', :defaults => { :format => 'json' }
delete '/user/:id' => 'users#destroy', :defaults => { :format => 'json' }
get '/typeahead/:input' => 'users#search', :defaults => { :format => 'json' }
