Escrevendo Aplicações Melhores com Active Model

Por Carlos Antonio, na RubyConf Brasil 2012.

Transcript

1. Active Model l escrevendo aplicações melhores com
2. http://pragprog.com/book/ppmetr/metaprogramming-ruby
3. Rails 2.3.2
4. Active Record
5. Validações
6. obj = MyClass.new obj.attr = 'test' puts obj.valid? # => true obj.attr = 'tst' puts obj.valid? # => false
7. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end
8. “I had to go through some hoops to make this code work.” Paolo Perrotta Metaprogramming Ruby
9. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end What? ActiveRecord::Base # autoload all modules
10. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end def save; end def save!; end LOL
11. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end def new_record?; true; end trolling
12. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 there we go!
13. “However, that wasn’t too much work in exchange for a flexible set of validation Class Macros.” Paolo Perrotta Metaprogramming Ruby
14. work? not too much
15. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end ActiveRecord::Base # autoload all modules def save; end def save!; end def new_record?; true; end
16. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4
17. work! too much
18. nisso? como chegar
19. Source diving!
20. Active Model
21. @cantoniodasilva Carlos Antonio
23. Devise maintainer SimpleForm maintainer
24. Rails commiter
25. guru SC
26. Active Model aplicações melhores escrevendo com
27. Rails 2.3
28. Active Record VALIDAÇÕES SERIALIZAÇÃO JSON/XML ...
29. Active Resource VALIDAÇÕES SERIALIZAÇÃO JSON/XML ...
30. Mongoid VALIDAÇÕES ? SERIALIZAÇÃO ? ...
31. MyClass VALIDAÇÕES ? SERIALIZAÇÃO ? ...
32. require 'activerecord' ActiveRecord::Base # autoload all modules class MyClass def save; end def save!; end def new_record?; true; end include ActiveRecord::Validations attr_accessor :attr validates_length_of :attr, :minimum => 4 end
33. ! DRY
34. Frágil
35. Rails 3
36. Rails 3 Rewrite Everything!
37. Active Model
38. Active Model VALIDAÇÕES SERIALIZAÇÃO JSON/XML ...
39. Active Record include ActiveModel::*
40. module ActiveRecord class Base extend ActiveModel::Naming # Uses ActiveModel::Translation extend Translation # Uses ActiveModel::MassAssignmentSecurity include AttributeAssignment include ActiveModel::Conversion # Uses ActiveModel::Validations include Validations # Uses ActiveModel::AttributeMethods include AttributeMethods # Uses ActiveModel::Callbacks include Callbacks include ActiveModel::Observing include ActiveModel::SecurePassword # Uses ActiveModel::Serialization include Serialization # ... end end
41. Active Resource include ActiveModel::*
42. module ActiveResource class Base extend ActiveModel::Naming # Uses ActiveModel::Observing include Observing # Uses ActiveModel::Validations include Validations include ActiveModel::Conversion include ActiveModel::Serializers::JSON include ActiveModel::Serializers::Xml # ... end end
43. works how it
44. Validations
45. class Report < ActiveRecord::Base validates_presence_of :name end Active Record
46. report = Report.new puts report.valid? #=> false puts report.errors.full_messages #=> Name can't be blank Active Record
47. class Report include ActiveModel::Validations attr_accessor :name validates_presence_of :name end Active Model
48. class Report include ActiveModel::Validations attr_accessor :name validates_presence_of :name end Active Model include ActiveModel::Validations validates_presence_of :name
49. report = Report.new puts report.valid? #=> false puts report.errors.full_messages #=> Name can't be blank Active Model
50. Validator
51. class Report < ActiveRecord::Base validates_with ReportValidator end Active Record
52. class ReportValidator < ActiveModel::Validator def validate(report) if report.name.blank? report.errors.add :name, :blank end # More validations... end end Active Record
53. class ReportValidator < ActiveModel::Validator def validate(report) if report.name.blank? report.errors.add :name, :blank end # More validations... end end Active Record ReportValidator < ActiveModel::Validator def validate(report)
54. report = Report.new puts report.valid? #=> false puts report.errors.full_messages #=> Name can't be blank Active Record
55. class Report include ActiveModel::Validations validates_with ReportValidator attr_accessor :name end Active Model
56. class Report include ActiveModel::Validations validates_with ReportValidator attr_accessor :name end Active Model include ActiveModel::Validations validates_with ReportValidator
57. report = Report.new puts report.valid? #=> false puts report.errors.full_messages #=> Name can't be blank Active Model
58. Validations: Nova Sintaxe
59. class Report include ActiveModel::Validations attr_accessor :name # validates_presence_of :name validates :name, presence: true end Active Model
60. class Report include ActiveModel::Validations attr_accessor :name # validates_presence_of :name validates :name, presence: true end Active Model include ActiveModel::Validations validates :name, presence: true
61. Custom Validator
62. class Report include ActiveModel::Validations attr_accessor :no_name validates :no_name, absence: true end Active Model
63. class Report include ActiveModel::Validations attr_accessor :no_name validates :no_name, absence: true end include ActiveModel::Validations validates :no_name, absence: true Active Model
64. class AbsenceValidator < ActiveModel::EachValidator def validate_each(record, attribute, value) if value.present? record.errors.add attribute, :absence end end end Active Model
65. class AbsenceValidator < ActiveModel::EachValidator def validate_each(record, attribute, value) if value.present? record.errors.add attribute, :absence end end end AbsenceValidator Active Model
66. class AbsenceValidator < ActiveModel::EachValidator def validate_each(record, attribute, value) if value.present? record.errors.add attribute, :absence end end end AbsenceValidator Active Model AbsenceValidator < ActiveModel::EachValidator def validate_each(record, attribute, value)
67. Translation
68. # I18n: activerecord: attributes: report: name: 'Nome' puts Report.human_attribute_name('name') #=> "Nome" Active Record
69. # I18n: activemodel: attributes: report: name: 'Nome' Active Model
70. # I18n: activemodel: attributes: report: name: 'Nome' activemodel: Active Model
71. class Report extend ActiveModel::Translation end puts Report.human_attribute_name('name') #=> "Nome" Active Model
72. Validations + Translation
73. # I18n: activemodel: attributes: report: name: 'Nome' errors: messages: blank: 'deve ser preenchido' Active Model
74. report = Report.new puts report.valid? #=> false puts report.errors.full_messages #=> Nome deve ser preenchido Active Model
75. Callbacks
76. class Report < ActiveRecord::Base before_save { puts "it works before" } after_save { puts "it works after as well" } end Active Record
77. Report.new.save #=> it works before #=> ...saving... #=> it works after as well Active Record
78. class Report extend ActiveModel::Callbacks define_model_callbacks :save before_save { puts "it works before" } after_save { puts "it works after as well" } def save run_callbacks :save do puts "saving..." end end end Active Model
79. class Report extend ActiveModel::Callbacks define_model_callbacks :save before_save { puts "it works before" } after_save { puts "it works after as well" } def save run_callbacks :save do puts "saving..." end end end extend ActiveModel::Callbacks define_model_callbacks :save before_save { puts "it works before" } after_save { puts "it works after as well" } run_callbacks :save do puts "saving..." end Active Model
80. Report.new.save #=> it works before #=> ...saving... #=> it works after as well Active Model
81. Serialization
82. report = Report.new report.name = "Omglol" puts report.to_json #=> {"report":{"name":"Omglol"}} Active Record
83. class Report extend ActiveModel::Naming include ActiveModel::Serializers::JSON attr_accessor :name def attributes { name: name } end end Active Model
84. class Report extend ActiveModel::Naming include ActiveModel::Serializers::JSON attr_accessor :name def attributes { name: name } end end Active Model include ActiveModel::Serializers::JSON def attributes { name: name } end
85. report = Report.new report.name = "Omglol" puts report.to_json #=> {"report":{"name":"Omglol"}} Active Model
86. report = Report.new report.name = "Omglol" puts report.to_xml #=> <?xml version="1.0" encoding="UTF-8"?> #=> <report> #=> <name>Omglol</name> #=> </report> Active Record
87. class Report extend ActiveModel::Naming include ActiveModel::Serializers::Xml attr_accessor :name def attributes { name: name } end end Active Model
88. class Report extend ActiveModel::Naming include ActiveModel::Serializers::Xml attr_accessor :name def attributes { name: name } end end include ActiveModel::Serializers::Xml def attributes { name: name } end Active Model
89. report = Report.new report.name = "Omglol" puts report.to_xml #=> <?xml version="1.0" encoding="UTF-8"?> #=> <report> #=> <name>Omglol</name> #=> </report> Active Model
90. Attribute Methods
91. report = Report.new puts report.name? #=> false report.name = "Omglol" puts report.name? #=> true Active Record
92. report = Report.new puts report.name? #=> false report.name = "Omglol" puts report.name? #=> true report.name? #=> false report.name = "Omglol" report.name? #=> true Active Record
93. class Report include ActiveModel::AttributeMethods attribute_method_suffix '?' define_attribute_methods [:name] attr_accessor :name private def attribute?(attr) send(attr).present? end end Active Model
94. class Report include ActiveModel::AttributeMethods attribute_method_suffix '?' define_attribute_methods [:name] attr_accessor :name private def attribute?(attr) send(attr).present? end end include ActiveModel::AttributeMethods attribute_method_suffix '?' define_attribute_methods [:name] def attribute?(attr) send(attr).present? end Active Model
95. report = Report.new puts report.name? #=> false report.name = "Omglol" puts report.name? #=> true Active Model
96. report = Report.new puts report.name? #=> false report.name = "Omglol" puts report.name? #=> true report.name? #=> false report.name = "Omglol" report.name? #=> true Active Model
97. class Report include ActiveModel::AttributeMethods attribute_method_prefix 'clear_' define_attribute_methods [:name] attr_accessor :name private def clear_attribute(attr) send "#{attr}=", nil end end Active Model
98. class Report include ActiveModel::AttributeMethods attribute_method_prefix 'clear_' define_attribute_methods [:name] attr_accessor :name private def clear_attribute(attr) send "#{attr}=", nil end end Active Model include ActiveModel::AttributeMethods attribute_method_prefix 'clear_' define_attribute_methods [:name] def clear_attribute(attr) send "#{attr}=", nil end
99. report.name = "Omglol" puts report.name? #=> true report.clear_name puts report.name? #=> false Active Model
100. report.name = "Omglol" puts report.name? #=> true report.clear_name puts report.name? #=> false report.name? #=> true report.clear_name report.name? #=> false Active Model
101. DRY !
102. Active Model <3 <3 <3
103. isso... Enquanto
104. 2.3.OMG Rails:
105. Invitation Feature:
106. class Invitation attr_accessor :contacts, :message end
107. <% form_for @invitation do |f| %> ... <% end %>
109. WTF!?!
110. <form action="/invitations/%23%3CInvitation: 0x1060c2b08%3E" class="edit_invitation" id="edit_invitation_2198214020" method="post"> ... </form>
111. <form action="/invitations/%23%3CInvitation: 0x1060c2b08%3E" class="edit_invitation" id="edit_invitation_2198214020" method="post"> ... </form> action="/invitations/%23%3CInvitation: 0x1060c2b08%3E" What?
112. <form action="/invitations/%23%3CInvitation: 0x1060c2b08%3E" class="edit_invitation" id="edit_invitation_2198214020" method="post"> ... </form> class="edit_invitation" edit? LOL
113. <form action="/invitations/%23%3CInvitation: 0x1060c2b08%3E" class="edit_invitation" id="edit_invitation_2198214020" method="post"> ... </form> id="edit_invitation_2198214020" troll number
114. class Invitation attr_accessor :contacts, :message def new_record? true end def id nil end end
115. class Invitation attr_accessor :contacts, :message def new_record? true end def id nil end end def new_record? true end def id nil end
116. <form action="/invitations" class="new_invitation" id="new_invitation" method="post"> ... </form> there we go!
117. nisso? como chegar
118. Source diving!
119. Rails 2.3
120. Action Pack Active Record
121. Active Record? Blargh!?!!
122. NoSQL FTW!!
123. Action Pack Mongoid
124. monkey Patch
125. Outro objeto em um form?
126. monkey Patch
127. class Invitation attr_accessor :contacts, :message def new_record? true end def id nil end end def new_record? true end def id nil end
128. ! API
129. Frágil
130. Rails 3
131. Rails 3 Rewrite Everything!
132. Active Model
133. Action Pack Active Model
134. Active Model Active Record Action Pack
135. Active Model Mongoid Action Pack
136. Outro objeto em um form?
137. Active Model OmgLol Action Pack
138. works how it
139. form_for @report do |f| f.label :name f.text_field :name f.submit end
140. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form>
141. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <form action="/reports" class="new_report" id="new_report" method="post"> como?
142. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <form action="/reports" class="new_report" id="new_report" method="post"> como?
143. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <form action="/reports" class="new_report" id="new_report" method="post"> como?
144. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <label for="report_name">Nome</label> como?
145. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <label for="report_name">Nome</label> como?
146. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <label for="report_name">Nome</label> como?
147. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <input id="report_name" size="30" name="report[name]" type="text" /> como?
148. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <input id="report_name" size="30" name="report[name]" type="text" /> como?
149. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <input id="report_name" size="30" name="report[name]" type="text" /> como?
150. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <input name="commit" type="submit" value="Criar Relatório" /> como?
151. <form action="/reports" class="new_report" id="new_report" method="post"> <label for="report_name">Nome</label> <input id="report_name" size="30" name="report[name]" type="text" /> <input name="commit" type="submit" value="Criar Relatório" /> </form> <input name="commit" type="submit" value="Criar Relatório" /> como?
152. API Active Model
153. ActiveModel ::Lint::Tests
154. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end
155. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages
156. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages Naming
157. class Report extend ActiveModel::Naming end
158. puts Report.model_name #=> "Report" puts Report.model_name.singular #=> report puts Report.model_name.plural #=> reports puts Report.model_name.param_key #=> report
159. puts Report.model_name #=> "Report" puts Report.model_name.singular #=> report puts Report.model_name.plural #=> reports puts Report.model_name.param_key #=> report model_name "Report" model_name.singular report model_name.plural reports model_name.param_key report
160. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages Conversion
161. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages Implementar
162. class Report include ActiveModel::Conversion attr_accessor :id def persisted? id.present? end end
163. report = Report.new report.id = 1 puts report.persisted? #=> true puts report.to_key #=> [1] puts report.to_param #=> '1'
164. report = Report.new report.id = 1 puts report.persisted? #=> true puts report.to_key #=> [1] puts report.to_param #=> '1' report.persisted? #=> true report.to_key #=> [1] report.to_param #=> '1'
165. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages Validations
166. require 'minitest/autorun' class OmglolTest < MiniTest::Unit::TestCase include ActiveModel::Lint::Tests def setup @model = Omglol.new end end
167. require 'minitest/autorun' class OmglolTest < MiniTest::Unit::TestCase include ActiveModel::Lint::Tests def setup @model = Omglol.new end end include ActiveModel::Lint::Tests def setup @model = Omglol.new end
168. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion include ActiveModel::Validations def persisted?; false; end end
169. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion include ActiveModel::Validations def persisted?; false; end end extend ActiveModel::Naming include ActiveModel::Conversion include ActiveModel::Validations def persisted?; false; end
170. $ ruby activemodel_test.rb Run options: --seed 9998 # Running tests: ........ Finished tests in 0.029155s, 274.3955 tests/s, 1303.3785 assertions/s. 8 tests, 38 assertions, 0 failures, 0 errors, 0 skips
171. $ ruby activemodel_test.rb Run options: --seed 9998 # Running tests: ........ Finished tests in 0.029155s, 274.3955 tests/s, 1303.3785 assertions/s. 8 tests, 38 assertions, 0 failures, 0 errors, 0 skips
172. Action Pack?
173. form_for @report
174. form_for @report do |f| f.label :name f.text_field :name f.submit end
175. <form action="/reports" class="new_report" id="new_report" method="post"> <form action="/reports/1" class="edit_report" id="edit_report_1" method="post"> new edit
176. url_for @report
177. url_for @report @report.persisted?
178. url_for @report @report.persisted? @report.to_param
179. url_for @report /reports /reports/1
180. dom_class @report
181. dom_class @report @report.class. model_name.param_key
182. dom_class @report @report.class. model_name.param_key “report”
183. dom_class @report, :new
184. dom_class @report, :new “new_report”
185. dom_id @report
186. dom_id @report dom_class @report
187. dom_id @report dom_class @report new_report / edit_report
188. dom_id @report
189. dom_id @report @report.to_key
190. dom_id @report @report.to_key edit_report_1
191. f.label :name
192. f.label :name model_name.param_key
193. f.label :name model_name.param_key “report_name”
194. f.label :name
195. f.label :name @report.class. human_attribute_name
196. f.label :name @report.class. human_attribute_name “Nome”
197. f.label :name <label for="report_name">Nome</label>
198. f.text_field :name
199. f.text_field :name model_name.param_key
200. f.text_field :name model_name.param_key “report_name”
201. f.text_field :name model_name.param_key “report_name” “report[name]”
202. f.text_field :name <input id="report_name" size="30" name="report[name]" type="text" />
203. f.submit
204. f.submit @report.persisted?
205. f.submit @report.persisted? “Criar” ou “Atualizar”
206. f.submit
207. f.submit model_name.human
208. f.submit model_name.human “Relatório”
209. f.submit <input name="commit" type="submit" value="Criar Relatório" />
210. form_for @report
211. form_for @report url_for dom_id dom_class
212. form_for @report
213. form_for @report model_name persisted? to_key
214. link_to “...”, @report
215. link_to “...”, @report url_for @report
216. div_for @report
217. div_for @report dom_id @report
218. div_for @report dom_id @report dom_class @report
219. render @report render @reports
220. render @report
221. render @report app/views/ reports/_report.html.erb
222. render @report
223. render @report @report.to_partial_path
224. render @report @report.to_partial_path reports/_report
225. respond_to :html, :json respond_with @report
226. respond_to :html, :json
227. respond_to :html, :json html? json?
228. respond_with @report
229. respond_with @report success? failure?
230. respond_with @report
231. respond_with @report @report.errors.empty?
232. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages
233. Validations?
234. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages Validations?
235. Rails 4 SPOILER
236. module ActiveModel::Lint::Tests def test_to_key; end def test_to_param; end def test_to_partial_path; end def test_valid?; end def test_persisted?; end def test_model_naming; end def test_errors_aref; end def test_errors_full_messages; end end RAILS 4 to_key to_param to_partial_path valid? persisted? model_naming errors_aref errors_full_messages
237. require 'minitest/autorun' class OmglolTest < MiniTest::Unit::TestCase include ActiveModel::Lint::Tests def setup @model = Omglol.new end end RAILS 4
238. require 'minitest/autorun' class OmglolTest < MiniTest::Unit::TestCase include ActiveModel::Lint::Tests def setup @model = Omglol.new end end RAILS 4 include ActiveModel::Lint::Tests def setup @model = Omglol.new end
239. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end end RAILS 4
240. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end end RAILS 4 def errors; Hash.new([]); end
241. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end end RAILS 4 extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end def errors; Hash.new([]); end
242. $ ruby activemodel_master_test.rb Run options: --seed 10850 # Running tests: ...... Finished tests in 0.002590s, 2316.6023 tests/s, 11583.0116 assertions/s. 6 tests, 30 assertions, 0 failures, 0 errors, 0 skip
243. $ ruby activemodel_master_test.rb Run options: --seed 10850 # Running tests: ...... Finished tests in 0.002590s, 2316.6023 tests/s, 11583.0116 assertions/s. 6 tests, 30 assertions, 0 failures, 0 errors, 0 skip
244. API !
245. Active Model <3 <3 <3
246. Review
247. DRY Active Model
248. API Active Model
249. Bônus Track!
250. Rails 4 SPOILER
251. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end end RAILS 4
252. require 'active_model' class Omglol extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end end RAILS 4 extend ActiveModel::Naming include ActiveModel::Conversion def persisted?; false; end def errors; Hash.new([]); end
253. ActiveModel ::Model
254. module Model def self.included(base) #:nodoc: base.class_eval do extend ActiveModel::Naming extend ActiveModel::Translation include ActiveModel::Validations include ActiveModel::Conversion end end def initialize(params={}) params.each do |attr, value| self.public_send("#{attr}=", value) end if params end def persisted? false end end RAILS 4
255. module Model def self.included(base) #:nodoc: base.class_eval do extend ActiveModel::Naming extend ActiveModel::Translation include ActiveModel::Validations include ActiveModel::Conversion end end def initialize(params={}) params.each do |attr, value| self.public_send("#{attr}=", value) end if params end def persisted? false end end RAILS 4 extend ActiveModel::Naming extend ActiveModel::Translation include ActiveModel::Validations include ActiveModel::Conversion def persisted? false end
256. require 'active_model' class Omglol include ActiveModel::Model end RAILS 4
257. require 'active_model' class Omglol include ActiveModel::Model end RAILS 4 include ActiveModel::Model
258. form_for @omglol
259. render @omglol
260. respond_with @omglol
261. Active Model <3 <3 <3
263. Active Model Attribute Methods Callbacks Dirty Mass Assignment Secure Password Observing Serialization Validations Validator Model Conversion Naming Translation Lint
264. plataformatec/ mail_form
265. http://pragprog.com/book/jvrails/crafting-rails-applications
266. WITH GREAT MOUSTACHE COMES GREAT RESPONSIBILITY
267. Estamos contratando! plataformatec.com.br
269. APLICAÇÕES MELHORES ACTIVE MODEL @cantoniodasilva Obrigado!