Strange Routing error in rails 3.2 - ruby-on-rails

Question

I am implementing an application in which i want to change the settings of the application.
While doing so I am getting an error
no routes matches {:action=>"show", :controller=>"settings", format=>"nil"}
while clicking on the open new settings tab.
my index.html is as follows:-
<h1>Listing settings</h1>
<table class="table table-striped table-bordered">
<tr>
<th>ID</th>
<th>Name</th>
<th>Value</th>
<th>Description</th>
<th>Edit</th>
<th>Delete</th>
</tr>
<% #settings.each do |c| %>
<tr>
<td><%= c.id %> </td>
<td><%= c.name %> </td>
<td><%= c.value %> </td>
<td><%= c.description %> </td>
<td><%= link_to 'Edit', {:action => 'edit', :id => c.id} %> </td>
<td><%= link_to 'Delete', {:action => 'delete', :id => c.id},
:data => { :confirm => "Are you sure you want to delete this value?" } %></td>
</tr>
<% end %>
</table>
<br />
<%= link_to 'New Setting', {:action => 'new'} %>
My settings controller is as follows:-
class SettingsController < ApplicationController
# GET /setting
# GET /setting.json
def index
#settings = Setting.all
respond_to do |format|
format.html # index.html.erb
format.json { render json: #settings }
end
end
# GET /setting/1
# GET /setting/1.json
def show
#setting = Setting.find(params[:id])
respond_to do |format|
format.html # show.html.erb
format.json { render json: #setting }
end
end
# GET /setting/new
# GET /setting/new.json
def new
#setting = Setting.new
respond_to do |format|
format.html # new.html.erb
format.json { render json: #setting }
end
end
# GET /setting/1/edit
def edit
#setting = Setting.find(params[:id])
end
# POST /setting
# POST /setting.json
def create
#setting = Setting.new(params[:setting])
respond_to do |format|
if #setting.save
format.html { redirect_to #setting, notice: 'Setting was successfully created.' }
format.json { render json: #setting, status: :created, location: #setting }
else
format.html { render action: "new" }
format.json { render json: #setting.errors, status: :unprocessable_entity }
end
end
end
# PUT /setting/1
# PUT /setting/1.json
def update
#setting = Setting.find(params[:id])
respond_to do |format|
if #setting.update_attributes(params[:setting])
format.html { redirect_to #setting, notice: 'Setting was successfully updated.' }
format.json { head :no_content }
else
format.html { render action: "edit" }
format.json { render json: #setting.errors, status: :unprocessable_entity }
end
end
end
# DELETE /setting/1
# DELETE /setting/1.json
def delete
#setting = Setting.find(params[:id])
#setting.deleted = 1
#setting.save
respond_to do |format|
format.html { redirect_to settings_url }
format.json { render :json => { :success => true } }
end
end
end
My new.html is as follows:-
<h1>New settings</h1>
<%= form_for #setting do |f| %>
<% if #setting.errors.any? %>
<div id="errorExplanation">
<h2><%= pluralize(#setting.errors.count, "error") %> prohibited this setting from being saved:</h2>
<ul>
<% #setting.errors.full_messages.each do |msg| %>
<li><%= msg %></li>
<% end %>
</ul>
</div>
<% end %>
Id: <%= f.text_field :id %><br>
Name: <%= f.text_field :name %><br>
Values: <%= f.text_field :value %><br>
Description: <%= f.text_field :description %><br>
<% end %>
<%= link_to 'Back', settings_path %>
My routes.rb is as follows:-
Lms::Application.routes.draw do
resources :books do
member do
post 'add'
post 'remove'
end
collection do
get 'add'
get 'list' => "books#index"
post 'get_books'
get 'get_books'
end
end
resources :books
resources :book_transactions
resources :book_issues
resources :book_holds
resources :categories
resources :users
resources :admins
resources :library_locations
resources :lov_values
resources :loan_fines
resources :lov_names
resources :loans_fines do
member do
post 'add'
post 'remove'
end
collection do
get 'add'
get 'list'
post 'get_loans_fines'
get 'get_loans_fines'
end
end
resources :settings do
member do
post 'add'
post 'remove'
end
collection do
get 'add'
get 'list'
post 'get_settings'
get 'get_settings'
end
end
root :to => 'books#index'
match ':controller(/:action(/:id))(.:format)'
The strange part is that when i click on new action it is going/redirecting to the show action..I am a bit confused why this is happening..
Can some one help me with this..

Answer 1

To check your routes you can run
rake routes
to inspect if you have the routes defined correctly. Also I would suggest to use
<%= link_to "New Setting", new_setting_pah %>
For your routes definition you are not defining the routes for other methods than add or remove.
I advise you to read this great tutorial on rails routes