Categorie

_form.html.erb

<%= simple_form_for(@category) do |f| %>
  <%= f.error_notification %>

  <div class="form-inputs">
    <%= f.input :name %>
    <%= f.input :description %>
    <%= f.input :parent_id %>
  </div>

  <div class="form-actions">
    <%= f.button :submit %>
  </div>
<% end %>

categorie.rb

class Categorie < ActiveRecord::Base
  rolify
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable,
  # :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
        :recoverable, :rememberable, :trackable, :validatable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :role_ids, :as => :admin       
  attr_accessible :description, :name, :parent_id
  
  validates_presence_of :name
  validates_uniqueness_of :name, :case_sensitive => false
end

categories_controller.rb

class CategoriesController < ApplicationController
  # GET /categories
  # GET /categories.json
  def index
    @categories = Categorie.all

    respond_to do |format|
      format.html # index.html.erb
      format.json { render json: @categories }
    end
  end

  # GET /categories/1
  # GET /categories/1.json
  def show
    @category = Categorie.find(params[:id])

    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @category }
    end
  end

  # GET /categories/new
  # GET /categories/new.json
  def new
    @category = Categorie.new

    respond_to do |format|
      format.html # new.html.erb
      format.json { render json: @category }
    end
  end

  # GET /categories/1/edit
  def edit
    @category = Categorie.find(params[:id])
  end

  # POST /categories
  # POST /categories.json
  def create
    @category = Categorie.new(params[:category])

    respond_to do |format|
      if @category.save
        format.html { redirect_to @category, notice: 'Categorie was successfully created.' }
        format.json { render json: @category, status: :created, location: @category }
      else
        format.html { render action: "new" }
        format.json { render json: @category.errors, status: :unprocessable_entity }
      end
    end
  end

  # PUT /categories/1
  # PUT /categories/1.json
  def update
    @category = Categorie.find(params[:id])

    respond_to do |format|
      if @category.update_attributes(params[:category])
        format.html { redirect_to @category, notice: 'Categorie was successfully updated.' }
        format.json { head :no_content }
      else
        format.html { render action: "edit" }
        format.json { render json: @category.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /categories/1
  # DELETE /categories/1.json
  def destroy
    @category = Categorie.find(params[:id])
    @category.destroy

    respond_to do |format|
      format.html { redirect_to categories_url }
      format.json { head :no_content }
    end
  end
end

new.html.erb

<h1>New category</h1>

<%= render 'form' %>

<%= link_to 'Back', categories_path %>

routes.rb

Annuaire::Application.routes.draw do

  authenticated :user do
    root :to => 'home#index'
  end
  
  root :to => "home#index"
  devise_for :users
  resources :users, :categories

end

show.html.erb

<p id="notice"><%= notice %></p>

<p>
  <b>Name:</b>
  <%= @category.name %>
</p>

<p>
  <b>Description:</b>
  <%= @category.description %>
</p>

<p>
  <b>Parent:</b>
  <%= @category.parent_id %>
</p>


<%= link_to 'Edit', edit_category_path(@category) %> |
<%= link_to 'Back', categories_path %>