Rails respond with JBuilder (AngularJS) - ruby-on-rails

Question

i have a simple application to snooker league and i have a action add_player in LeaguesController. My client (AngularJS) call this action and i want to respond with json format using JBuilder. This working fine:
def add_player
...
render :json => #league.players.to_json(:only => [ :id, :firstname, :lastname, :max_break, :email ])
end
But when i delete this line and add:
respond_to do |format|
format.html
format.json
end
i have this error:
ActionView::MissingTemplate (
Missing template leagues/add_player,
application/add_player
with {:locale=>[:en], :formats=>[:html], :variants=>[], :handlers=>[:erb, :builder, :raw, :ruby, :coffee, :jbuilder, :haml]}.
Searched in:
* "/home/daniel/SitesWWW/snookerLeague/app/views"
):
app/controllers/leagues_controller.rb:67:in `add_player'
Of course i have file add_player.json.jbuilder:
json.players #league.players do |player|
json.id player.id
json.firstname player.firstname.capitalize if player.firstname
json.lastname player.lastname.capitalize if player.lastname
json.email player.email
json.max_break player.max_break
end
So, what i should do?

Answer 1

Notice in your error message :formats=>[:html] this indicates to me it is trying to render add_player.html.erb and not your jbuilder template.
To verify this, try changing the calling code and append .json to the url which will force the format to be json.
You can also specify a default of json on your routes and not include it in the url:
resources :leagues, defaults: { format: :json } do
member do
post :add_player
end
end
see also: http://guides.rubyonrails.org/routing.html#defining-defaults