将JavaScript从Rails控制器加载到javascript文件中的d3 .defer（）函数

Question

I have a rails app that uses d3 to produce a globe with cities on it. Currently the data for the cities are in a static json file called places.json. The places.json file is then being rendered to the rest of the d3 code within assets/javascripts through this snippet

 queue()
.defer(d3.json, "/assets/world-110m.json")
.defer(d3.json, "/assets/places.json")
.await(ready);

I would like to replace the "/assets/places.json" file with a controller that rendors dynamic json. I currently have the controller in operation and I have a post request that can get the json to the javascripts file below.

$.post( "/teams/to_geo_json", function( data ) {
   alert( JSON.stringify(data) );
});

where /teams/to_geo_json is the path to the controller. However when I put the controller path into the .defer(d3.json, "/assets/places.json") it does not work and I have no idea how to get the $.post("/teams/to_geo_json")... call to work with the rest of the d3.js code.

Answer 1

As it turns out I was getting a 404 error in the defer. In my routes I had a

   post "/teams/to_geo_json" => "teams#to_geo_json"

In the console, it was asking for a get method from defer(). I changed the route above to this: get "/teams/to_geo_json" => "teams#to_geo_json"

Once I changed that I still had issues where localhost:3000/teams/to_geo_json was going to localhost:3000/teams/show/id instead and it thought to_geo_json was the id which of course it could not find. So it errored out. To fix this I put

 get "/teams/to_geo_json" => "teams#to_geo_json"

above

resources :teams, :only => [:index, :show] do
   resources :users, :path => :teammates, :as => :teammates, :controller =>    "teammates"
 end

in my routes.rb folder