This document provides steps for deploying a Rails application to Heroku. It begins with setting up the Heroku toolbelt locally and generating an SSH key. The steps then involve creating a Heroku app, modifying the Gemfile for production, deploying code to Heroku with Git, running migrations, and opening the app in a browser.

1. Rails

2. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

3. ( )

4. Step 1
Spotlight

5. Step 2 terminal.app Enter

6. Step 3

7. Dock

8. pwd
cd
mkdir
ls

9. MAC
iTerm2

10. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

11. Ruby
irb Ruby

13. Ruby
Ruby
( )

14. (variables)
1+2 => 3
3*4 => 12
puts a+1 4
=> nil
(
)
a=3 => 3

15. (array)
” ”
a = [1,3,5] # a [1,3,5]
a = a + [6] #a [1,3,5,6]
a = a - [1] #a [3,5,6]
fruits = ["kiwi", "strawberry", "plum"]
# fruits ["kiwi", "strawberry", "plum"]
fruits = fruits + ["orange"]
#fruits ["kiwi", "strawberry", "plum", "orange"]
fruits = fruits - ["kiwi"]
#fruits ["strawberry", "plum", "orange"]

16. (class)
7.class => Fixnum
"kiwi".class => String
Ruby
fruits.class => Array

17. (loop)
1~10
i = 1
while i<=10
puts i
i = i + 1
end
1~10 1~100 1~1000

18. (loop)
a=[1,3,5]
a.each do |x|
puts x
end

19. (flow control)
if
else
end
if my_variable > 1
puts "YAY!"
end

20. (method)
( )
( )
def pluralize(word)
word + "s"
end
pluralize("kiwi")
def ( )
end

21. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

22. Rails
intro_rails/0404/

23. intro_rails/0416
rails new suggestotron rails
suggestotron

24. finder
app
config config configuration
route db

25. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

26. Git
3
git 1
Git
Git Repo

27. Git git init
suggestotron git init
suggestotron
Step 1: suggestotron
Step 2: git init
Git Repo

28. git
git add
git add . .
Step 1: git add .
Git Repo

29. Git Repo
git commit
git commit -m “ ”
Step 1: git commit -m “ ”

30. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

31. rails server
Step 1: rails server rails s

32. > localhost:3000

33. 1 rails server
2 Ctrl + C
3 (tab)
4 > rails server -p 4000
localhost:4000

34. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

35. Migration
(topic)
Face
as title

36. Migration
1. (title) (description)
2.
Rails Scaffold( )

37. rails generate scaffold topic title:string
description:text 2 1. (topic)
(title) (description) 2.
scaffold (script)
db/migrate/XXXX_create_topics.rb
rake db:migrate
Step 1: rails generate scaffold topic title:string description:text
< ....>
Step 2: rake db:migrate
Migration-Scaffold

38. Step 1: rails generate scaffold topic title:string
description:text
Migration-Scaffold

39. Step 2: rake db:migrate
Migration-Scaffold

40. http://localhost:3000/topics
~

41. ( )
Rails
(Create) (Read) (Update)
(Delete) CRUD
Migration

42. ( )
rails scaffold( )
schema CRUD
rails generate scaffold topic title:string
description:text
CRUD
migration
rake db:migrate
Migration

43. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

44. MVC (model view controller)
controller
model
view
Rails
Controller
ViewModel

45. M-V-C
Rails

46. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

47. rails server
http://localhost:3000/topics
CRUD Scaffolding

48. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

49. localhost:3000
localhost:3000/topics
localhost:3000
route ( ) route

50. Step 1: localhost:3000/rails/info
< >/topics topics#index

51. /topics
Step 1: /config/routes.rb
• (#)
• root
• welcome#index welcome index

52. topics index
Step 2: # root ‘welcome#index’
root ‘topics#index’

54. 01
02 Ruby
03
04 Git Repo
Rails
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

55. Topic
(
Facebook )

56. Topic
table( ) vote
1 vote 1
vote ( schema)
id 1 vote
topic_id id

57. Topic
Step 1: rails generate model vote topic_id:integer
Step 2: rake db:migrate

58. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

59. Topics
2 ( 2 model )

60. Topics
2 ( 2 model )

61. Topics
Topic model Vote
Step 1: app/models/topic.rb

62. Topics
topic have many Topic
model has_many :votes
dependent: :destroy Topic destroy
votes
class Topic < ActiveRecord::Base
has_many :votes, dependent: :destroy
end
Step 2: app/models/topic.rb

63. Topics
Vote model Topic
Step 1: app/models/vote.rb
class Vote < ActiveRecord::Base
belongs_to :topic
end
topic Vote model
belongs_to :topic

64. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

65. (+1)
(topic)
+1
Face 3
5
as title 7

66. 3
A. (Controller)
B. (Route)
C. (View)

67. A.
Step 1: app/controllers/topics_controller.rb
controller private keyword
def upvote
@topic = Topic.find(params[:id])
@topic.votes.create
redirect_to(topics_path)
end

68. A.
1. def upvote
2. @topic = Topic.find(params[:id])
3. @topic.votes.create
4. redirect_to(topics_path)
5. end
1~5 upvote ( )
2 params[:id] topic id
@topic
3 @topic vote
4

69. B.
Router
router Controller
Step 1: http://localhost:3000/rails/info route

70. B.
Step 2: config/routes.rb
resources :topics
resources :topics do
member do
post 'upvote'
end
end

71. B.
Step 3: http://localhost:3000/rails/info route
Route

72. B.

73. C.
View
upvote_topic_path

74. C.
Step 1: app/views/topics/index.html.erb
<% @topics.each do |topic| %>
<tr>
<td><%= topic.title %></td>
<td><%= topic.description %></td>
<td><%= link_to 'Show', topic %></td>
<td><%= link_to 'Edit', edit_topic_path(topic) %></td>
<td><%= link_to 'Destroy', topic, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
<% @topics.each do |topic| %>
<tr>
<td><%= topic.title %></td>
<td><%= topic.description %></td>
<td><%= topic.votes.count %></td>
<td><%= button_to ' ', upvote_topic_path(topic), method: :post %></td>
<td><%= link_to 'Show', topic %></td>
<td><%= link_to 'Edit', edit_topic_path(topic) %></td>
<td><%= link_to 'Destroy', topic, method: :delete, data: { confirm: 'Are you sure?' } %></td>
</tr>
<% end %>
( 2 )

75. C.

76. C.

77. C.

78. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

79. Topic Topics
( )
Q
A Controller create update

80. Topic Topics
Step 1: app/controllers/topics_controller.rb create

81. Topic Topics
save @topic
Step 2: @topic topics_path

82. Topic Topics
Step 3: create update

83. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

84. Topic
topics

85. Topic
View
Step 1: app/views/topics/index.html.erb
<td><%= topic.description %></td>
<th>Description</th>

86. Topic
Step 2 app/views/topics/
index.html.erb
<td><%= topic.title %></td>
<td><%= link_to topic.title, topic %></td>

87. Topic

88. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

89. Topics
'show'
'edit'
'destroy' 'delete'

90. Topics
Step 1 : app/views/topics/index.html.erb
<td><%= link_to 'Show', topic %></td>
<td><%= link_to 'Edit', edit_topic_path(topic) %></td>
Step 2 : app/views/topics/index.html.erb
<td><%= link_to 'Destroy', topic, method: :delete,
data: { confirm: 'Are you sure?' } %></td>
<td><%= link_to 'Delete', topic, method: :delete,
data: { confirm: 'Are you sure?' } %></td>

91. Topics

92. 01
Rails
02 Ruby
03
04 Git Repo
05
06 Migration
07 Rails
08 CRUD Scaffolding
09
10 Topic
11 Topics
12
13 Topic Topics
14 Topic
15 Topics
16 Deploy Heroku

93. Heroku
Heroku Heroku
2007 6 Ruby
Java Node.js Scala Clojure Python
PHP Perl

94. Deploy Heroku
1. Heroku Heroku toolbelt SSH key
heroku ( )
2. heroku

95. Step 1: Heroku http://heroku.com (
Heroku Git GitHub SSH Email )
Step 2: https://toolbelt.heroku.com/ heroku
toolbelt

96. Step 3: heroku version heroku-toolbelt
3.42.50( )

97. SSH key Heroku
Step 4 : heroku keys:add

98. Deploy Heroku
heroku heroku
Step 1: heroku create
heroku create Heroku
URL

99. Deploy Heroku
Step 2 : Gemfile
gem 'sqlite3'
group :development, :test do
gem 'sqlite3'
end
group :production do
gem 'pg'
gem 'rails_12factor'
end

100. Deploy Heroku
Step 3 bundle install --without production

101. Deploy Heroku
heroku git
commit
Step 4 :
git add .
git commit -m “deploy to heroku”

102. Deploy Heroku
heroku
Step 5 : git push heroku master
heroku migration
Step 6 heroku run rake db:migrate

103. Deploy Heroku
Step 7 heroku open