Ruby on Rails - Show method for a parsed JSON result - ruby-on-rails

Question

I am building a seemingly simple website for a visitor to get a status update on a selected data piece. The data comes from an external API. The gist of it is this: the visitor sees a list of the data names, clicks one, and is redirected to a partial with status update, either True or False.
My index method works very well, and iterates through the data names perfectly. I believe my routing (using the friendly_id gem) should work fine. However, I cannot figure out how to properly set up the show method.
Here is my code thus far:
Controller:
class DataController < ApplicationController
include HTTParty
attr_accessor :name, :status
def index
#response = HTTParty.get("api_url").parsed_response
respond_to do |format|
format.json { render :json => JSON.parse(#result, :include => { :data => { :only => [:name, :status]}}) }
format.html { render "index.html.erb" }
end
end
def show
#response = HTTParty.get('api_url').parsed_response
respond_to do |format|
format.json { render :json => JSON.parse(#result, :include => { :data => { :only => [:name, :status]}}) }
format.html { render "show.html.erb" }
end
#name = #response.find(params[:name])
end
end
View:
<% #response.each do |data| %>
<ul>
<li>
<%= link_to data['name'].upcase, name_path(#name) %>
</li>
</ul>
<% end %>
Routes:
Rails.application.routes.draw do
root 'data#index'
get '/:name' => 'data#show', as: "name"
end
All of this together brings up the following error:
ActionController::UrlGenerationError in Data#index
Showing /app/views/layouts/_header.html.erb where line #11 raised:
No route matches {:action=>"show", :controller=>"data", :name=>nil} missing required keys: [:name]
What I am trying to accomplish is to be able to route each iterated link as 'root/{data name}', pulling {data name} from the JSON result as a parameter, and then rendering a show page with the status update information. Clearly, I have no idea how to actually capture the "name" key from the parsed JSON result as a param for the show method. I have tried creating a data_params method to contain it, but it did not work. I have tried implicitly calling the param on the find method in show (as above), to no avail. I have even tried calling a new api scrape in a params method and trying to parse the results into that, and nothing.
I'm guessing it is either some very simple mistake I'm not seeing (is my link_to actually pointing the right direction? are my api calls and JSON parsing done correctly [yes, I know I should create a separate method or helper for the api call, but that hasn't been working out for me so far--I keep breaking the app]? is this link actually supposed to call from the index method still?), or else something a bit more out of my depth.
Any ideas on where to go from here?

Answer 1

In this view:
<% #response.each do |data| %>
<ul>
<li>
<%= link_to data['name'].upcase, name_path(#name) %>
</li>
</ul>
<% end %>
You're using #name but you never actually assign a value to it in your index controller method. As a result - it gets passed to the name_path function with a value of nil. That throws an error because your route definition requires a name.
I think you want something like name_path(data['name']) or something along those lines.