Create User model

app/assets/javascripts/users.js.coffee

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+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/users.css.scss

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+// Place all the styles related to the Users controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/users_controller.rb

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+class UsersController < ApplicationController
+  before_action :set_user, only: [:show, :edit, :update, :destroy]
+
+  # GET /users
+  # GET /users.json
+  def index
+    @users = User.all
+  end
+
+  # GET /users/1
+  # GET /users/1.json
+  def show
+  end
+
+  # GET /users/new
+  def new
+    @user = User.new
+  end
+
+  # GET /users/1/edit
+  def edit
+  end
+
+  # POST /users
+  # POST /users.json
+  def create
+    @user = User.new(user_params)
+
+    respond_to do |format|
+      if @user.save
+        format.html { redirect_to @user, notice: 'User was successfully created.' }
+        format.json { render :show, status: :created, location: @user }
+      else
+        format.html { render :new }
+        format.json { render json: @user.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /users/1
+  # PATCH/PUT /users/1.json
+  def update
+    respond_to do |format|
+      if @user.update(user_params)
+        format.html { redirect_to @user, notice: 'User was successfully updated.' }
+        format.json { render :show, status: :ok, location: @user }
+      else
+        format.html { render :edit }
+        format.json { render json: @user.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # DELETE /users/1
+  # DELETE /users/1.json
+  def destroy
+    @user.destroy
+    respond_to do |format|
+      format.html { redirect_to users_url, notice: 'User was successfully destroyed.' }
+      format.json { head :no_content }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_user
+      @user = User.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def user_params
+      params.require(:user).permit(:name)
+    end
+end

app/helpers/users_helper.rb

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+module UsersHelper
+end

app/models/user.rb

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+class User < ActiveRecord::Base
+end

app/views/users/_form.html.erb

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+<%= form_for(@user) do |f| %>
+  <% if @user.errors.any? %>
+    <div id="error_explanation">
+      <h2><%= pluralize(@user.errors.count, "error") %> prohibited this user from being saved:</h2>
+
+      <ul>
+      <% @user.errors.full_messages.each do |message| %>
+        <li><%= message %></li>
+      <% end %>
+      </ul>
+    </div>
+  <% end %>
+
+  <div class="field">
+    <%= f.label :name %><br>
+    <%= f.text_field :name %>
+  </div>
+  <div class="actions">
+    <%= f.submit %>
+  </div>
+<% end %>

app/views/users/edit.html.erb

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+<h1>Editing user</h1>
+
+<%= render 'form' %>
+
+<%= link_to 'Show', @user %> |
+<%= link_to 'Back', users_path %>

app/views/users/index.html.erb

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+<h1>Listing users</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th>Name</th>
+      <th colspan="3"></th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @users.each do |user| %>
+      <tr>
+        <td><%= user.name %></td>
+        <td><%= link_to 'Show', user %></td>
+        <td><%= link_to 'Edit', edit_user_path(user) %></td>
+        <td><%= link_to 'Destroy', user, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New User', new_user_path %>

app/views/users/index.json.jbuilder

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+json.array!(@users) do |user|
+  json.extract! user, :id, :name
+  json.url user_url(user, format: :json)
+end

app/views/users/new.html.erb

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+<h1>New user</h1>
+
+<%= render 'form' %>
+
+<%= link_to 'Back', users_path %>

app/views/users/show.html.erb

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+<p id="notice"><%= notice %></p>
+
+<p>
+  <strong>Name:</strong>
+  <%= @user.name %>
+</p>
+
+<%= link_to 'Edit', edit_user_path(@user) %> |
+<%= link_to 'Back', users_path %>

app/views/users/show.json.jbuilder

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+json.extract! @user, :id, :name, :created_at, :updated_at

config/routes.rb

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 Rails.application.routes.draw do
+  resources :users
+
   resources :calendars
 
   resources :events

db/migrate/20150317053313_create_users.rb

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+class CreateUsers < ActiveRecord::Migration
+  def change
+    create_table :users do |t|
+      t.string :name
+
+      t.timestamps
+    end
+  end
+end

spec/controllers/users_controller_spec.rb

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+require 'rails_helper'
+
+# This spec was generated by rspec-rails when you ran the scaffold generator.
+# It demonstrates how one might use RSpec to specify the controller code that
+# was generated by Rails when you ran the scaffold generator.
+#
+# It assumes that the implementation code is generated by the rails scaffold
+# generator.  If you are using any extension libraries to generate different
+# controller code, this generated spec may or may not pass.
+#
+# It only uses APIs available in rails and/or rspec-rails.  There are a number
+# of tools you can use to make these specs even more expressive, but we're
+# sticking to rails and rspec-rails APIs to keep things simple and stable.
+#
+# Compared to earlier versions of this generator, there is very limited use of
+# stubs and message expectations in this spec.  Stubs are only used when there
+# is no simpler way to get a handle on the object needed for the example.
+# Message expectations are only used when there is no simpler way to specify
+# that an instance is receiving a specific message.
+
+RSpec.describe UsersController, :type => :controller do
+
+  # This should return the minimal set of attributes required to create a valid
+  # User. As you add validations to User, be sure to
+  # adjust the attributes here as well.
+  let(:valid_attributes) {
+    skip("Add a hash of attributes valid for your model")
+  }
+
+  let(:invalid_attributes) {
+    skip("Add a hash of attributes invalid for your model")
+  }
+
+  # This should return the minimal set of values that should be in the session
+  # in order to pass any filters (e.g. authentication) defined in
+  # UsersController. Be sure to keep this updated too.
+  let(:valid_session) { {} }
+
+  describe "GET index" do
+    it "assigns all users as @users" do
+      user = User.create! valid_attributes
+      get :index, {}, valid_session
+      expect(assigns(:users)).to eq([user])
+    end
+  end
+
+  describe "GET show" do
+    it "assigns the requested user as @user" do
+      user = User.create! valid_attributes
+      get :show, {:id => user.to_param}, valid_session
+      expect(assigns(:user)).to eq(user)
+    end
+  end
+
+  describe "GET new" do
+    it "assigns a new user as @user" do
+      get :new, {}, valid_session
+      expect(assigns(:user)).to be_a_new(User)
+    end
+  end
+
+  describe "GET edit" do
+    it "assigns the requested user as @user" do
+      user = User.create! valid_attributes
+      get :edit, {:id => user.to_param}, valid_session
+      expect(assigns(:user)).to eq(user)
+    end
+  end
+
+  describe "POST create" do
+    describe "with valid params" do
+      it "creates a new User" do
+        expect {
+          post :create, {:user => valid_attributes}, valid_session
+        }.to change(User, :count).by(1)
+      end
+
+      it "assigns a newly created user as @user" do
+        post :create, {:user => valid_attributes}, valid_session
+        expect(assigns(:user)).to be_a(User)
+        expect(assigns(:user)).to be_persisted
+      end
+
+      it "redirects to the created user" do
+        post :create, {:user => valid_attributes}, valid_session
+        expect(response).to redirect_to(User.last)
+      end
+    end
+
+    describe "with invalid params" do
+      it "assigns a newly created but unsaved user as @user" do
+        post :create, {:user => invalid_attributes}, valid_session
+        expect(assigns(:user)).to be_a_new(User)
+      end
+
+      it "re-renders the 'new' template" do
+        post :create, {:user => invalid_attributes}, valid_session
+        expect(response).to render_template("new")
+      end
+    end
+  end
+
+  describe "PUT update" do
+    describe "with valid params" do
+      let(:new_attributes) {
+        skip("Add a hash of attributes valid for your model")
+      }
+
+      it "updates the requested user" do
+        user = User.create! valid_attributes
+        put :update, {:id => user.to_param, :user => new_attributes}, valid_session
+        user.reload
+        skip("Add assertions for updated state")
+      end
+
+      it "assigns the requested user as @user" do
+        user = User.create! valid_attributes
+        put :update, {:id => user.to_param, :user => valid_attributes}, valid_session
+        expect(assigns(:user)).to eq(user)
+      end
+
+      it "redirects to the user" do
+        user = User.create! valid_attributes
+        put :update, {:id => user.to_param, :user => valid_attributes}, valid_session
+        expect(response).to redirect_to(user)
+      end
+    end
+
+    describe "with invalid params" do
+      it "assigns the user as @user" do
+        user = User.create! valid_attributes
+        put :update, {:id => user.to_param, :user => invalid_attributes}, valid_session
+        expect(assigns(:user)).to eq(user)
+      end
+
+      it "re-renders the 'edit' template" do
+        user = User.create! valid_attributes
+        put :update, {:id => user.to_param, :user => invalid_attributes}, valid_session
+        expect(response).to render_template("edit")
+      end
+    end
+  end
+
+  describe "DELETE destroy" do
+    it "destroys the requested user" do
+      user = User.create! valid_attributes
+      expect {
+        delete :destroy, {:id => user.to_param}, valid_session
+      }.to change(User, :count).by(-1)
+    end
+
+    it "redirects to the users list" do
+      user = User.create! valid_attributes
+      delete :destroy, {:id => user.to_param}, valid_session
+      expect(response).to redirect_to(users_url)
+    end
+  end
+
+end

spec/helpers/users_helper_spec.rb

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+require 'rails_helper'
+
+# Specs in this file have access to a helper object that includes
+# the UsersHelper. For example:
+#
+# describe UsersHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       expect(helper.concat_strings("this","that")).to eq("this that")
+#     end
+#   end
+# end
+RSpec.describe UsersHelper, :type => :helper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/models/user_spec.rb

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+require 'rails_helper'
+
+RSpec.describe User, :type => :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end

spec/requests/users_spec.rb

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+require 'rails_helper'
+
+RSpec.describe "Users", :type => :request do
+  describe "GET /users" do
+    it "works! (now write some real specs)" do
+      get users_path
+      expect(response).to have_http_status(200)
+    end
+  end
+end