Completed Ch. 13: User microposts (Part 1)

sample_app: Chapter 13 User microposts log

$ cd sample_app
$ rails s -b 0.0.0.0 -p 3000

Firefox: http://localhost:3000/

$ git checkout -b user-microposts

$ rails generate model Micropost content:text user:references

db/migrate/

    add_index :microposts, [:user_id, :created_at]

test/models/micropost_test.rbrequire 'test_helper'

class MicropostTest < ActiveSupport::TestCase

  def setup
    @user = users(:michael)
    # This code is not idiomatically correct.
    @micropost = Micropost.new(content: "Lorem ipsum", user_id: @user.id)
  end

  test "should be valid" do
    assert @micropost.valid?
  end

  test "user id should be present" do
    @micropost.user_id = nil
    assert_not @micropost.valid?
  end
end

app/models/micropost.rb

  validates :user_id, presence: true

test/models/micropost_test.rb

  test "content should be present" do
    @micropost.content = "   "
    assert_not @micropost.valid?
  end

  test "content should be at most 140 characters" do
    @micropost.content = "a" * 141
    assert_not @micropost.valid?
  end

app/models/micropost.rb

  validates :content, presence: true, length: { maximum: 140 }

app/models/user.rb

  has_many :microposts

test/models/micropost_test.rb

  def setup
    @user = users(:michael)
    @micropost = @user.microposts.build(content: "Lorem ipsum")
  end

test/models/micropost_test.rb

  test "order should be most recent first" do
    assert_equal microposts(:most_recent), Micropost.first
  end

test/fixtures/microposts.yml

orange:
  content: "I just ate an orange!"
  created_at: <%= 10.minutes.ago %>

tau_manifesto:
  content: "Check out the @tauday site by @mhartl: http://tauday.com"
  created_at: <%= 3.years.ago %>

cat_video:
  content: "Sad cats are sad: http://youtu.be/PKffm2uI4dk"
  created_at: <%= 2.hours.ago %>

most_recent:
  content: "Writing a short test"
  created_at: <%= Time.zone.now %>

app/models/micropost.rb

  default_scope -> { order(created_at: :desc) }

test/models/user_test.rb

  test "associated microposts should be destroyed" do
    @user.save
    @user.microposts.create!(content: "Lorem ipsum")
    assert_difference 'Micropost.count', -1 do
      @user.destroy
    end
  end

app/models/user.rb

  has_many :microposts, dependent: :destroy

$ rails db:migrate:reset
$ rails db:seed
$ rails generate controller Microposts

app/views/microposts/_micropost.html.erb

<li id="micropost-<%= micropost.id %>">
  <%= link_to gravatar_for(micropost.user, size: 50), micropost.user %>
  <span class="user"><%= link_to micropost.user.name, micropost.user %></span>
  <span class="content"><%= micropost.content %></span>
  <span class="timestamp">
    Posted <%= time_ago_in_words(micropost.created_at) %> ago.
  </span>
</li>

app/controllers/users_controller.rb

  def show
    @user = User.find(params[:id])
    redirect_to root_url and return unless @user.activated?     
    @microposts = @user.microposts.paginate(page: params[:page])
  end

app/views/users/show.html.erb

  <div class="col-md-8">
    <% if @user.microposts.any? %>
      <h3>Microposts (<%= @user.microposts.count %>)</h3>
      <ol class="microposts">
        <%= render @microposts %>
      </ol>
      <%= will_paginate @microposts %>
    <% end %>
  </div>

db/seeds.rb

users = User.order(:created_at).take(6)
50.times do
  content = Faker::Lorem.sentence(5)
  users.each { |user| user.microposts.create!(content: content) }
end

$ rails db:migrate:reset
$ rails db:seed

Keyboard: Ctrl + C
$ rails s -b 0.0.0.0 -p 3000

app/assets/stylesheets/custom.scss

/* microposts */

.microposts {
  list-style: none;
  padding: 0;
  li {
    padding: 10px 0;
    border-top: 1px solid #e8e8e8;
  }
  .user {
    margin-top: 5em;
    padding-top: 0;
  }
  .content {
    display: block;
    margin-left: 60px;
    img {
      display: block;
      padding: 5px 0;
    }
  }
  .timestamp {
    color: $gray-light;
    display: block;
    margin-left: 60px;
  }
  .gravatar {
    float: left;
    margin-right: 10px;
    margin-top: 5px;
  }
}

aside {
  textarea {
    height: 100px;
    margin-bottom: 5px;
  }
}

span.picture {
  margin-top: 10px;
  input {
    border: 0;
  }
}

The microposts of page 2 of user no#1, that was generated by db.Seed, was: http://localhost:3000/users/1?page=2

$ rails generate integration_test users_profile

test/fixtures/microposts.yml

orange:
  content: "I just ate an orange!"
  created_at: <%= 10.minutes.ago %>
  user: michael 

tau_manifesto:
  content: "Check out the @tauday site by @mhartl: http://tauday.com"
  created_at: <%= 3.years.ago %>
  user: michael

cat_video:
  content: "Sad cats are sad: http://youtu.be/PKffm2uI4dk"
  created_at: <%= 2.hours.ago %>
  user: michael

most_recent:
  content: "Writing a short test"
  created_at: <%= Time.zone.now %>
  user: michael
 
<% 30.times do |n| %>
micropost_<%= n %>:
  content: <%= Faker::Lorem.sentence(5) %>
  created_at: <%= 42.days.ago %>
  user: michael
<% end %>

test/integration/users_profile_test.rb

require 'test_helper'

class UsersProfileTest < ActionDispatch::IntegrationTest
  include ApplicationHelper

  def setup
    @user = users(:michael)
  end

  test "profile display" do
    get user_path(@user)
    assert_template 'users/show'
    assert_select 'title', full_title(@user.name)
    assert_select 'h1', text: @user.name
    assert_select 'h1>img.gravatar'
    assert_match @user.microposts.count.to_s, response.body
    assert_select 'div.pagination'
    @user.microposts.paginate(page: 1).each do |micropost|
      assert_match micropost.content, response.body
    end
  end   

end

app/controllers/users_controller.rb

  before_action :logged_in_user, only: [:index, :edit, :update, :destroy]

config/routes.rb

  resources :microposts,          only: [:create, :destroy]

test/controllers/microposts_controller_test.rb

require 'test_helper'

class MicropostsControllerTest < ActionDispatch::IntegrationTest

  def setup
    @micropost = microposts(:orange)
  end

  test "should redirect create when not logged in" do
    assert_no_difference 'Micropost.count' do
      post microposts_path, params: { micropost: { content: "Lorem ipsum" } }
    end
    assert_redirected_to login_url
  end

  test "should redirect destroy when not logged in" do
    assert_no_difference 'Micropost.count' do
      delete micropost_path(@micropost)
    end
    assert_redirected_to login_url
  end
end

app/controllers/application_controller.rb

  private

    # Confirms a logged-in user.
    def logged_in_user
      unless logged_in?
        store_location
        flash[:danger] = "Please log in."
        redirect_to login_url
      end
    end

app/controllers/users_controller.rb
DELETED action def logged_in_user

app/controllers/microposts_controller.rb

class MicropostsController < ApplicationController
  before_action :logged_in_user, only: [:create, :destroy]

  def create
  end

  def destroy
  end   

end

app/controllers/microposts_controller.rb

class MicropostsController < ApplicationController
  before_action :logged_in_user, only: [:create, :destroy]

  def create
    @micropost = current_user.microposts.build(micropost_params)
    if @micropost.save
      flash[:success] = "Micropost created!"
      redirect_to root_url
    else
      render 'static_pages/home'
    end
  end   

  def destroy
  end   

  private

    def micropost_params
      params.require(:micropost).permit(:content)
    end   
   
end