Strict routing error on rails 3.2

Question

I am implementing an application in which I want to change application settings. In doing so, I get an error message

no routes matches {:action=>"show", :controller=>"settings", format=>"nil"} 

by clicking on the open tab new settings .

my index.html 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 %> &nbsp;</td> <td><%= c.name %>&nbsp;</td> <td><%= c.value %>&nbsp;</td> <td><%= c.description %>&nbsp;</td> <td><%= link_to 'Edit', {:action => 'edit', :id => c.id} %> &nbsp;</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 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 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 .rb routes are 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 the new action, it jumps / redirects to the show action. I am a little confused why this is happening.

Can someone help me with this.

Answer 1

To check your routes, you can run

rake routes

Check if the routes are defined correctly. I would also suggest using

 <%= link_to "New Setting", new_setting_pah %> 

To define routes, you do not define routes for methods other than add or remove. I advise you to read this excellent rails route tutorial