Scaffold document

    % bin/rails generate scaffold document title:text content:text

app/assets/javascripts/documents.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/documents.scss

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

app/assets/stylesheets/scaffolds.scss

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+body {
+  background-color: #fff;
+  color: #333;
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-size: 13px;
+  line-height: 18px;
+  margin: 33px;
+}
+
+p, ol, ul, td {
+  font-family: verdana, arial, helvetica, sans-serif;
+  font-size: 13px;
+  line-height: 18px;
+  margin: 33px;
+}
+
+pre {
+  background-color: #eee;
+  padding: 10px;
+  font-size: 11px;
+}
+
+a {
+  color: #000;
+
+  &:visited {
+    color: #666;
+  }
+
+  &:hover {
+    color: #fff;
+    background-color: #000;
+  }
+}
+
+th {
+  padding-bottom: 5px;
+}
+
+td {
+  padding-bottom: 7px;
+  padding-left: 5px;
+  padding-right: 5px;
+}
+
+div {
+  &.field, &.actions {
+    margin-bottom: 10px;
+  }
+}
+
+#notice {
+  color: green;
+}
+
+.field_with_errors {
+  padding: 2px;
+  background-color: red;
+  display: table;
+}
+
+#error_explanation {
+  width: 450px;
+  border: 2px solid red;
+  padding: 7px;
+  padding-bottom: 0;
+  margin-bottom: 20px;
+  background-color: #f0f0f0;
+
+  h2 {
+    text-align: left;
+    font-weight: bold;
+    padding: 5px 5px 5px 15px;
+    font-size: 12px;
+    margin: -7px;
+    margin-bottom: 0;
+    background-color: #c00;
+    color: #fff;
+  }
+
+  ul li {
+    font-size: 12px;
+    list-style: square;
+  }
+}
+
+label {
+  display: block;
+}

app/controllers/documents_controller.rb

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

app/helpers/documents_helper.rb

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+module DocumentsHelper
+end

app/models/document.rb

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+class Document < ApplicationRecord
+end

app/views/documents/_document.json.jbuilder

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+json.extract! document, :id, :title, :content, :created_at, :updated_at
+json.url document_url(document, format: :json)

app/views/documents/_form.html.erb

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

app/views/documents/edit.html.erb

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+<h1>Editing Document</h1>
+
+<%= render 'form', document: @document %>
+
+<%= link_to 'Show', @document %> |
+<%= link_to 'Back', documents_path %>

app/views/documents/index.html.erb

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+<p id="notice"><%= notice %></p>
+
+<h1>Documents</h1>
+
+<table>
+  <thead>
+    <tr>
+      <th>Title</th>
+      <th>Content</th>
+      <th colspan="3"></th>
+    </tr>
+  </thead>
+
+  <tbody>
+    <% @documents.each do |document| %>
+      <tr>
+        <td><%= document.title %></td>
+        <td><%= document.content %></td>
+        <td><%= link_to 'Show', document %></td>
+        <td><%= link_to 'Edit', edit_document_path(document) %></td>
+        <td><%= link_to 'Destroy', document, method: :delete, data: { confirm: 'Are you sure?' } %></td>
+      </tr>
+    <% end %>
+  </tbody>
+</table>
+
+<br>
+
+<%= link_to 'New Document', new_document_path %>

app/views/documents/index.json.jbuilder

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+json.array! @documents, partial: 'documents/document', as: :document

app/views/documents/new.html.erb

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+<h1>New Document</h1>
+
+<%= render 'form', document: @document %>
+
+<%= link_to 'Back', documents_path %>

app/views/documents/show.html.erb

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+<p id="notice"><%= notice %></p>
+
+<p>
+  <strong>Title:</strong>
+  <%= @document.title %>
+</p>
+
+<p>
+  <strong>Content:</strong>
+  <%= @document.content %>
+</p>
+
+<%= link_to 'Edit', edit_document_path(@document) %> |
+<%= link_to 'Back', documents_path %>

app/views/documents/show.json.jbuilder

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+json.partial! "documents/document", document: @document

config/routes.rb

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 Rails.application.routes.draw do
+  resources :documents
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
 end

db/migrate/20161222023536_create_documents.rb

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+class CreateDocuments < ActiveRecord::Migration[5.0]
+  def change
+    create_table :documents do |t|
+      t.text :title
+      t.text :content
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

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+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 20161222023536) do
+
+  create_table "documents", force: :cascade do |t|
+    t.text     "title"
+    t.text     "content"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
+end

test/controllers/documents_controller_test.rb

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+require 'test_helper'
+
+class DocumentsControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    @document = documents(:one)
+  end
+
+  test "should get index" do
+    get documents_url
+    assert_response :success
+  end
+
+  test "should get new" do
+    get new_document_url
+    assert_response :success
+  end
+
+  test "should create document" do
+    assert_difference('Document.count') do
+      post documents_url, params: { document: { content: @document.content, title: @document.title } }
+    end
+
+    assert_redirected_to document_url(Document.last)
+  end
+
+  test "should show document" do
+    get document_url(@document)
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get edit_document_url(@document)
+    assert_response :success
+  end
+
+  test "should update document" do
+    patch document_url(@document), params: { document: { content: @document.content, title: @document.title } }
+    assert_redirected_to document_url(@document)
+  end
+
+  test "should destroy document" do
+    assert_difference('Document.count', -1) do
+      delete document_url(@document)
+    end
+
+    assert_redirected_to documents_url
+  end
+end

test/fixtures/documents.yml

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+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  title: MyText
+  content: MyText
+
+two:
+  title: MyText
+  content: MyText

test/models/document_test.rb

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+require 'test_helper'
+
+class DocumentTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end