Rails URL Generation Error but route exists - ruby-on-rails-4

Question

Making a basic phonebook app and made some changes while figuring out the has_many and belongs_to relationships. I must have broke something because I have no idea why I'm getting this error. When I access my root, I get the following-->
ActionController::UrlGenerationError in ContactsController#index
No route matches {:action=>"show", :controller=>"contacts"} missing required keys: [:id]
The error shows mistakes in lines:
app/views/contacts/index.html.erb:10:in `block in _app_views_contacts_index_html_erb___2771775118522806317_70170309989460'
app/views/contacts/index.html.erb:7:in `_app_views_contacts_index_html_erb___2771775118522806317_70170309989460'
This is my contacts/index.html.erb
<p id="notice"><%= notice %></p>
<% if user_signed_in? %>
<h1>Listing Contacts</h1>
<% #contacts = current_user.contacts %>
<% #contacts.each do |contact| %>
<div class="link row clearfix">
<h2>
<%= link_to contact.name, contact_path %>
</h2>
</div>
<% end %>
<% end %>
<%= link_to "New Contact", new_contact_path %>
<% else %>
<h5> Welcome. Make an account or sign in above! </h5>
<% end %>
This is my config/routes
Rails.application.routes.draw do
resources :controllers
devise_for :users
resources :contacts so
resources :numbers
end
end
end
This is my contacts/show.html.erb
<div class="page-header">
<h1><%= #contact.name %><br> </h1>
</div>
<p>
<strong>Name:</strong>
<%= #contact.name %>
</p>
<p>
<strong>Email:</strong>
<%= #contact.email %>
</p>
<br>
<%= link_to 'Edit', edit_contact_path(#contact) %> |
<%= link_to 'Back', contacts_path %>
The output of my rake routes:
contacts GET /contacts(.:format) contacts#index
POST /contacts(.:format) contacts#create
new_contact GET /contacts/new(.:format) contacts#new
edit_contact GET /contacts/:id/edit(.:format) contacts#edit
contact GET /contacts/:id(.:format) contacts#show
PATCH /contacts/:id(.:format) contacts#update
PUT /contacts/:id(.:format) contacts#update
DELETE /contacts/:id(.:format) contacts#destroy
As you can see, I have a route for contacts#show so that's not the mistake. I'm unclear as to what it could be. Any ideas?

Answer 1

Seems like you're missing :id from the contact_path.
In contacts/index.html.erb, change this:
<%= link_to contact.name, contact_path %>
to this:
<%= link_to contact.name, contact_path(contact.id) %>