The 11th Round of ROR Lab.

1. The 11th Round of ROR Lab.
Rails Form Helpers
April 21th, 2012
Hyoseong Choi
ROR Lab.

2. Short Review
ROR Lab.

3. Eager Loading
Associations
- Conditions on Eager Loaded Associations -
conditional “joins” > conditional “includes”
Post.includes(:comments)
.where("comments.visible", true)
SELECT "posts"."id" AS t0_r0, ... "comments"."updated_at" AS t1_r5
FROM "posts"
LEFT OUTER JOIN "comments"
ON "comments"."post_id" = "posts"."id"
WHERE (comments.visible = 1)
ROR Lab.

4. Eager Loading
Associations
- Conditions on Eager Loaded Associations -
INNER JOIN LEFT OUTER JOIN
conditional “joins” > conditional “includes”
Post.includes(:comments)
.where("comments.visible", true)
SELECT "posts"."id" AS t0_r0, ... "comments"."updated_at" AS t1_r5
FROM "posts"
LEFT OUTER JOIN "comments"
ON "comments"."post_id" = "posts"."id"
WHERE (comments.visible = 1)
ROR Lab.

5. Scopes
Passing in arguments
class Post < ActiveRecord::Base
scope :1_week_before,
lambda { |time| where("created_at < ?", time) }
end
class Post < ActiveRecord::Base
def self.1_week_before(time)
where("created_at < ?", time)
end
***What about “as a class method” ?
ROR Lab.

6. Scopes
Passing in arguments
class Post < ActiveRecord::Base
scope :1_week_before,
lambda { |time| where("created_at < ?", time) }
end
le
eab
erclass Post < ActiveRecord::Base
ef
pr def self.1_week_before(time)
where("created_at < ?", time)
end
***What about “as a class method” ?
ROR Lab.

7. Form Helpers
ROR Lab.

8. form_tag
• Two arguments
1. path for action
2. options hash
• submission method
• HTML options : class, ...
ROR Lab.

9. form_tag
Basic Form
<%= form_tag do %>
Form contents
<% end %>
<form accept-charset="UTF-8" action="/home/index" method="post">
<div style="margin:0;padding:0">
<input name="utf8" type="hidden" value="&#x2713;" />
<input name="authenticity_token" type="hidden"
value="f755bb0ed134b76c432144748a6d4b7a7ddf2b71" />
</div>
Form contents
</form>
ROR Lab.

10. form_tag
Multiple Hashes
form_tag(:controller => "people", :action => "search", :method
=> "get", :class => "nifty_form")
# => '<form accept-charset="UTF-8" action="/people/search?
form_tag({:controller => "people", :action => "search"}, :method
=> "get", :class => "nifty_form")
# => '<form accept-charset="UTF-8" action="/people/search"
ROR Lab.

11. Helpers
Generating Form Elements
• check_box_tag
• radio_button_tag
• text_area_tag
• password_field_tag
• hidden_field_tag
• search_field_tag
• telephone_field_tag
• url_field_tag
• email_field_tag
ROR Lab.

12. Helpers
Generating Form Elements
• check_box_tag
• radio_button_tag
• text_area_tag
• password_field_tag
• hidden_field_tag
• search_field_tag
• telephone_field_tag
HTML5 controls
• url_field_tag
• email_field_tag
ROR Lab.

13. Helpers
Generating Form Elements
• check_box_tag
• radio_button_tag
• text_area_tag
• password_field_tag
• hidden_field_tag polyfiller
• search_field_tag
• telephone_field_tag
HTML5 controls
• url_field_tag
• email_field_tag
ROR Lab.

14. Helpers
Generating Form Elements
• check_box_tag
• radio_button_tag
• text_area_tag
• password_field_tag
• hidden_field_tag polyfiller
• search_field_tag
• telephone_field_tag
HTML5 controls
• url_field_tag
• email_field_tag
ROR Lab.

15. Helpers
Generating Form Elements
• check_box_tag
• radio_button_tag
• text_area_tag yepnope
• password_field_tag
• hidden_field_tag polyfiller
• search_field_tag
• telephone_field_tag
HTML5 controls
• url_field_tag
• email_field_tag
ROR Lab.

16. Helpers
Generating Form Elements
• check_box_tag
• radio_button_tag Modernizr
• text_area_tag yepnope
• password_field_tag
• hidden_field_tag polyfiller
• search_field_tag
• telephone_field_tag
HTML5 controls
• url_field_tag
• email_field_tag
ROR Lab.

17. HTML 5
Form Helpers
Rails 3 HTML5 Input Types
search_field search
telephone_field tel
url_field url
email_field email
number_field number
range_field range
Agile Web Development with Rails 4th edition
ROR Lab.

18. Model Object
Helpers
ROR Lab.

19. Model Object
Helpers
• check_box_tag
ROR Lab.

20. Model Object
Helpers
• check_box_tag
• radio_button_tag
ROR Lab.

21. Model Object
Helpers
• check_box_tag
• radio_button_tag
• text_area_tag
ROR Lab.

22. Model Object
Helpers
• check_box_tag
• radio_button_tag
• text_area_tag
• password_field_tag
ROR Lab.

23. Model Object
Helpers
• check_box_tag
• radio_button_tag
• text_area_tag
• password_field_tag
• hidden_field_tag
ROR Lab.

24. Model Object
Helpers
• check_box_tag
• radio_button_tag
• No _tag • text_area_tag
• password_field_tag
• hidden_field_tag
ROR Lab.

25. Model Object
Helpers
• check_box_tag
• radio_button_tag
• No _tag • text_area_tag
• password_field_tag
• hidden_field_tag
ROR Lab.

26. for Model Object
@person -> name : “Henry”
<%= text_field(:person, :name) %>
<input id="person_name" name="person[name]" type="text"
ROR Lab.

27. for Model Object
@person -> name : “Henry”
<%= text_field(:person, :name) %>
<input id="person_name" name="person[name]" type="text"
ROR Lab.

28. for Model Object
@person -> name : “Henry”
<%= text_field(:person, :name) %>
<input id="person_name" name="person[name]" type="text"
ROR Lab.

29. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

30. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

31. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

32. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

33. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

34. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

35. Binding a Form to
an Object
def new
@article = Article.new
end
<%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
ROR Lab.

36. <%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
<form accept-charset="UTF-8" action="/articles/create"
method="post" class="nifty_form">
<input id="article_title" name="article[title]" size="30"
type="text" />
<textarea id="article_body" name="article[body]" cols="60"
rows="12"></textarea>
<input name="commit" type="submit" value="Create" />
</form>
ROR Lab.

37. <%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
params[:article]
<form accept-charset="UTF-8" action="/articles/create"
method="post" class="nifty_form">
<input id="article_title" name="article[title]" size="30"
params[:article][:title]
type="text" />
<textarea id="article_body" name="article[body]" cols="60"
rows="12"></textarea>
<input name="commit" type="submit" value="Create" />
</form>params[:article][:body]
ROR Lab.

38. <%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
params[:article]
<form accept-charset="UTF-8" action="/articles/create"
method="post" class="nifty_form">
<input id="article_title" name="article[title]" size="30"
params[:article][:title]
type="text" />
<textarea id="article_body" name="article[body]" cols="60"
rows="12"></textarea>
<input name="commit" type="submit" value="Create" />
</form>params[:article][:body]
ROR Lab.

39. <%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
params[:article]
<form accept-charset="UTF-8" action="/articles/create"
method="post" class="nifty_form">
<input id="article_title" name="article[title]" size="30"
params[:article][:title]
type="text" />
<textarea id="article_body" name="article[body]" cols="60"
rows="12"></textarea>
<input name="commit" type="submit" value="Create" />
</form>params[:article][:body]
ROR Lab.

40. <%= form_for @article, :url => { :action => "create" }, :html =>
{:class => "nifty_form"} do |f| %>
<%= f.text_field :title %>
<%= f.text_area :body, :size => "60x12" %>
<%= f.submit "Create" %>
<% end %>
params[:article]
<form accept-charset="UTF-8" action="/articles/create"
method="post" class="nifty_form">
<input id="article_title" name="article[title]" size="30"
params[:article][:title]
type="text" />
<textarea id="article_body" name="article[body]" cols="60"
rows="12"></textarea>
<input name="commit" type="submit" value="Create" />
</form>params[:article][:body]
ROR Lab.

41. fields_for
Dry Lab in Terminal
ROR Lab.

42. fields_for
Person
•name
•age
•sex
•address
•telephone
ROR Lab.

43. fields_for
Person Contact
•name
•age
•sex
•address
•telephone
ROR Lab.

44. fields_for
Person Contact
•name •address
•age •telephone
•sex
ROR Lab.

45. fields_for
has_one
Person Contact
•name •address
•age •telephone
•sex
ROR Lab.

46. fields_for
has_one
Person Contact
•name •address
•age belong_to •telephone
•sex
ROR Lab.

47. fields_for
has_one
Person Contact
•name •address
•age belong_to •telephone
•sex
class Person < ActiveRecord::Base
has_one :contact, :dependent => :destroy
end
class Contact < ActiveRecord::Base
belongs_to :person
ROR Lab.

48. Using Resources
resources :articles in config/routes.rb
## Creating a new article
# long-style:
form_for(@article, :url => articles_path)
# same thing, short-style (record identification gets used):
form_for(@article)
## Editing an existing article
# long-style:
form_for(@article, :url => article_path(@article), :html =>
{ :method => "put" })
# short-style:
form_for(@article)
ROR Lab.

49. Using Namespaces
namespace :admin do in routes.rb
resources :posts, :comments
end
form_for [:admin, @post] in _form.html.erb
ROR Lab.

50. HTTP Verbs
• GET
for all browsers
• POST
• PUT ?
• DELETE
ROR Lab.

51. HTTP Verbs
• GET
for all browsers
• POST
• PUT ?
• DELETE
ROR Lab.

52. HTTP Verbs
• GET
for all browsers
• POST
• PUT ?
• DELETE
ROR Lab.

53. PUT & DELETE
• A hidden input : _method
form_tag(search_path, :method => "put")
<form accept-charset="UTF-8" action="/search" method="post">
<div style="margin:0;padding:0">
<input name="_method" type="hidden" value="put" />
<input name="utf8" type="hidden" value="&#x2713;" />
<input name="authenticity_token" type="hidden"
value="f755bb0ed134b76c432144748a6d4b7a7ddf2b71" />
</div>
...
ROR Lab.

54. select_tag
<select name="city_id" id="city_id">
<option value="1">Lisbon</option>
<option value="2">Madrid</option>
...
<option value="12">Berlin</option>
</select>
<%= select_tag(:city_id, '<option value="1">Lisbon</option>...')
%>
ROR Lab.

55. options_for_select
<%= options_for_select([['Lisbon', 1], ['Madrid', 2], ...]) %>
output: 1st argument => a nested array
<option value="1">Lisbon</option>
<option value="2">Madrid</option>
...
<%= select_tag(:city_id, options_for_select(...)) %>
ROR Lab.

56. options_for_select
<%= options_for_select([['Lisbon', 1], ['Madrid', 2], ...], 2) %>
output:
2nd argument => ‘selected’
<option value="1">Lisbon</option>
<option value="2" selected="selected">Madrid</option>
ROR Lab.

57. options_for_select
<%= options_for_select([['Lisbon', 1], ['Madrid', 2], ...], 2) %>
output:
2nd argument => ‘selected’
<option value="1">Lisbon</option>
<option value="2" selected="selected">Madrid</option>
ROR Lab.

58. _tag
select_tag
# controller:
@person = Person.new(:city_id => 2)
# view:
<%= select(:person, :city_id, [['Lisbon', 1], ['Madrid', 2], ...]) %>
ROR Lab.

59. select_tag ORM
for
# controller:
@person = Person.new(:city_id => 2)
# view:
<%= select(:person, :city_id, [['Lisbon', 1], ['Madrid', 2], ...]) %>
ROR Lab.

60. select_tag ORM
for
# controller:
@person = Person.new(:city_id => 2)
# view:
<%= select(:person, :city_id, [['Lisbon', 1], ['Madrid', 2], ...]) %>
2
pre-selected by Rails
ROR Lab.

61. select_tag ORM
for
# controller:
@person = Person.new(:city_id => 2)
# view:
<%= select(:person, :city_id, [['Lisbon', 1], ['Madrid', 2], ...]) %>
form builder
2
pre-selected by Rails
# select on a form builder
<%= f.select(:city_id, ...) %>
ROR Lab.

62. select from
collection
<% cities_array = City.all.map { |city| [city.name, city.id] } %>
<%= options_for_select(cities_array) %>
options _for_select
ROR Lab.

63. select from
collection
<% cities_array = City.all.map { |city| [city.name, city.id] } %>
<%= options_for_select(cities_array) %>
options _from_collection _for_select
(City.all, :id, :name)
ROR Lab.

64. collection_select
<%= collection_select
<%= f.collection_select
ROR Lab.

65. collection_select
<%= collection_
collection_select
<%= f.collection_select
ROR Lab.

66. collection_select
<%= collection_
collection_select
<%= f.
f.collection_select
ROR Lab.

67. Special Select
• time_zone_select
: time_zone_options_for_select
• country_select
: isolated to country_select plugin
• select_date : barebones helper
• date_select : model object helper
ROR Lab.

68. select_date
<%= select_date Date.today, :prefix => :start_date %>
<select id="start_date_year"
name="start_date[year]"> ... </select>
<select id="start_date_month"
name="start_date[month]"> ... </select>
<select id="start_date_day"
name="start_date[day]"> ... </select>
ROR Lab.

69. select_date
<%= select_date Date.today, :prefix => :start_date %>
<select id="start_date_year"
name="start_date[year]"> ... </select>
<select id="start_date_month"
name="start_date[month]"> ... </select>
<select id="start_date_day"
name="start_date[day]"> ... </select>
Date.civil(params[:start_date][:year].to_i, params[:start_date]
[:month].to_i, params[:start_date][:day].to_i)
ROR Lab.

70. date_select
<%= date_select :person, :birth_date %>
<select id="person_birth_date_1i"
name="person[birth_date(1i)]"> ... </select>
<select id="person_birth_date_2i"
name="person[birth_date(2i)]"> ... </select>
<select id="person_birth_date_3i"
ROR Lab.

71. date_select
<%= date_select :person, :birth_date %>
<select id="person_birth_date_1i"
name="person[birth_date(1i)]"> ... </select>
<select id="person_birth_date_2i"
name="person[birth_date(2i)]"> ... </select>
<select id="person_birth_date_3i"
{:person => {'birth_date(1i)' => '2008', 'birth_date(2i)' => '11',
ROR Lab.

72. Individual Selects
• select_year
• select_month
• select_day :prefix defaults to “date”
• select_hour
• select_minute
• select_second
ROR Lab.

73. Individual Selects
• select_year
• select_month
• select_day :prefix defaults to “date”
• select_hour
• select_minute
• select_second
ROR Lab.

74. Uploading Files
params[:picture]
<%= form_tag({:action => :upload}, :multipart => true) do %>
<%= file_field_tag 'picture' %>
<% end %>
<%= form_for @person
, :multipart => true
<%= f.file_field :picture %> do |f| %>
<% end %>
params[:person][:picture]
Since Rails 3.1, it automatically sets the multipart/
form-data with file_field in the form_for
ROR Lab.

75. Uploading Files
params[:picture]
<%= form_tag({:action => :upload}, :multipart => true) do %>
<%= file_field_tag 'picture' %>
<% end %>
<%= form_for @person
<%= f.file_field :picture %> |f| %>
do
<% end %>
params[:person][:picture]
Since Rails 3.1, it automatically sets the multipart/
form-data with file_field in the form_for
ROR Lab.

76. Uploading Files
params[:picture]
<%= form_tag({:action => :upload}, :multipart => true) do %>
<%= file_field_tag 'picture' %>
<% end %>
<%= form_for @person
<%= f.file_field :picture %> |f| %>
do
<% end %>
params[:person][:picture]
Since Rails 3.1, it automatically sets the multipart/
form-data with file_field in the form_for
ROR Lab.

77. What gets
uploaded
def upload
uploaded_io = params[:person][:picture]
File.open(Rails.root.join('public', 'uploads',
uploaded_io.original_filename), 'w') do |file|
file.write(uploaded_io.read)
end
ROR Lab.

78. What gets
uploaded
def upload
uploaded_io = params[:person][:picture]
File.open(Rails.root.join('public', 'uploads',
uploaded_io.original_filename), 'w') do |file|
file.write(uploaded_io.read)
end
an instance of a subclass of IO
• original_filename
• content_type : MIME type
ROR Lab.

79. Upload Gems
• CarrierWave
• Paperclip
ROR Lab.

80. Ajaxing Upload
• “remotipart” gem
: AJAX style file uploads with jQuery
https://github.com/leppert/remotipart
ROR Lab.

81. Customizing Form
Builders
ROR Lab.

82. Customizing Form
Builders
<%= form_for @person do |f| %>
<%= text_field_with_label f, :first_name %>
ROR Lab.

83. Customizing Form
Builders
<%= form_for @person do |f| %>
<%= text_field_with_label f, :first_name %>
<%= form_for @person, :builder => LabellingFormBuilder do |f|
%>
<%= f.text_field :first_name %>
class LabellingFormBuilder < ActionView::Helpers::FormBuilder
def text_field(attribute, options={})
label(attribute) + super
end
end
ROR Lab.

84. Simple_form
• https://github.com/plataformatec/
simple_form
ROR Lab.

85. Params Naming
Client Server
Form
for model obj
“@person” params[:person]
submit
ROR Lab.

86. Params Naming
Client Server
Form
for model obj
“@person” params[:person]
submit
ROR Lab.

87. Basic Structures
Arrays & Hashes
<input id="person_name" name="person[name]"
type="text" value="Henry"/>
params hash
{‘person’ => {‘name’ => ‘Henry’}}
params[:person]
{‘name’ => ‘Henry’}
params[:person][:name]
‘Henry’
ROR Lab.

88. Nested Hashes
<input id="person_address_city"
name="person[address][city]"
type="text" value="New York"/>
params hash
{'person' => {'address' => {'city' => 'New York'}}}
ROR Lab.

89. Duplicated Params
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
params[:person][:phone_number]
[
’02-333-1234’,
‘031-323-9898’,
‘062-546-2323’
]
ROR Lab.

90. Duplicated Params
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
params[:person][:phone_number]
[
’02-333-1234’,
‘031-323-9898’,
‘062-546-2323’
]
ROR Lab.

91. Duplicated Params
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
params[:person][:phone_number]
[
’02-333-1234’,
‘031-323-9898’,
‘062-546-2323’
]
ROR Lab.

92. Duplicated Params
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
<input name="person[phone_number][]" type="text"/>
params[:person][:phone_number]
[
’02-333-1234’,
‘031-323-9898’,
‘062-546-2323’
]
ROR Lab.

93. Mixed Params
hash nth-nested but array only one-level
<input name="addresses[][line1]" type="text"/>
<input name="addresses[][line2]" type="text"/>
<input name="addresses[][city]" type="text"/>
params[:addresses]
[
{
‘line1’ => ’02-333-1234’,
‘line2’ => ‘031-323-9898’,
‘city’ => ‘seoul’
}
]
ROR Lab.

94. Using Form
Helpers
<%= form_for @person do |person_form| %>
<%= person_form.text_field :name %>
<% @person.addresses.each do |address| %>
<%= person_form.fields_for address, :index => address do |
address_form|%>
<%= address_form.text_field :city %>
<% end %>
<% end %>
<% end %>
<form accept-charset="UTF-8" action="/people/1" class="edit_person" id="edit_person_1"
method="post">
<input id="person_name" name="person[name]" size="30" type="text" />
<input id="person_address_23_city" name="person[address][23][city]" size="30" type="text" />
<input id="person_address_45_city" name="person[address][45][city]" size="30" type="text" />
</form>
ROR Lab.

95. Using Form
Helpers
{
'person' =>
{
'name' => 'Bob',
'address' =>
{
'23' => {'city' => 'Paris'},
'45' => {'city' => 'London'}
}
}
ROR Lab.

96. Using :index
<%= fields_for 'person[address][primary]', address, :index =>
address do |address_form| %>
<%= address_form.text_field :city %>
<%= fields_for 'person[address][primary][]', address do |
address_form| %>
<%= address_form.text_field :city %>
ROR Lab.

97. Form to External
Resources - 1
<%= form_tag 'http://farfar.away/form', :authenticity_token =>
'external_token') do %>
Form contents
<%= form_tag 'http://farfar.away/form', :authenticity_token =>
false) do %>
Form contents
ROR Lab.

98. Form to External
Resources - 1
<%= form_tag 'http://farfar.away/form', :authenticity_token =>
'external_token') do %>
Form contents
payment gateway
<%= form_tag 'http://farfar.away/form', :authenticity_token =>
false) do %>
Form contents
ROR Lab.

99. Form to External
Resources - 1
<%= form_tag 'http://farfar.away/form', :authenticity_token =>
'external_token') do %>
Form contents
<%= form_tag 'http://farfar.away/form', :authenticity_token =>
false) do %>
Form contents
payment gateway
ROR Lab.

100. Form to External
Resources - 2
<%= form_for @invoice, :url =>
external_url, :authenticity_token => 'external_token' do |f|
Form contents
<% end %>
<%= form_for @invoice, :url =>
external_url, :authenticity_token => false do |f|
Form contents
ROR Lab.

101. Form to External
Resources - 2
<%= form_for @invoice, :url =>
form_for
external_url, :authenticity_token => 'external_token' do |f|
Form contents
<% end %>
<%= form_for @invoice, :url =>
form_for
external_url, :authenticity_token => false do |f|
Form contents
ROR Lab.

102. Complex forms
Railscasts by Ryan Bates
ROR Lab.

103. Complex forms
Railscasts by Ryan Bates
• Complex Forms Part 1 - Episode #73
• Complex Forms Part II - Episode #74
• Complex Forms Part III - Episode #75
• Nested Model Form (resivsed) - Episode #196
ROR Lab.

104. 감사합니다.

105.
ROR Lab.