Ruby on Rails para Iniciantes - Aula 48

Ruby on Rails para Iniciantes - Aula 48
Has Many Through + Cocoon gem

Transcript

1. Ruby on Rails Para iniciantes - 4a Temporada ;-)
2. http://videosdeti.com.br Subscribe!
3. Aula 48 Has Many Through + Cocoon gem
4. Ruby on Rails Has Many Through http://guides.rubyonrails.org/association_basics.html#the- has-many-through-association
5. Ruby on Rails
6. Ruby on Rails
7. Ruby on Rails
8. Ruby on Rails Scaffolds rails generate scaffold Physician name:string rails generate scaffold Appointment physician:references patient:references appointment_date:datetime rails generate scaffold Patient name:string
9. Ruby on Rails class Physician < ActiveRecord::Base has_many :appointments has_many :patients, through: :appointments end class Appointment < ActiveRecord::Base belongs_to :physician belongs_to :patient end
10. Ruby on Rails
11. Ruby on Rails class Patient < ActiveRecord::Base has_many :appointments has_many :physicians, through: :appointments end
12. Ruby on Rails
13. Ruby on Rails Nested Attributes
14. Ruby on Rails class Physician < ActiveRecord::Base has_many :appointments has_many :patients, through: :appointments accepts_nested_attributes_for :appointments, reject_if: : all_blank, allow_destroy: true end
15. Ruby on Rails
16. Ruby on Rails class Appointment < ActiveRecord::Base belongs_to :physician belongs_to :patient accepts_nested_attributes_for :patient, reject_if: : all_blank, allow_destroy: true end
17. Ruby on Rails
18. Ruby on Rails Strong Parameters def physician_params params.require(:physician).permit(:name, : appointments_attributes => [:id, :appointment_date, : physician_id, :patient_id, :_destroy, :patient_attributes => [: id, :name]]) end
19. Ruby on Rails Cocoon https://github.com/nathanvda/cocoon
20. Ruby on Rails Gemfile gem "cocoon"
21. Ruby on Rails application.js //= require cocoon
22. Ruby on Rails Helpers link_to_add_association This function adds a link to your markup that, when clicked, dynamically adds a new partial form for the given association.
23. Ruby on Rails Helpers link_to_remove_association This function will add a link to your markup that, when clicked, dynamically removes the surrounding partial form. This should be placed inside the partial _<association-object-singular>_fields.
24. Ruby on Rails Formulário Physician ... <%= link_to_add_association 'add appointment', f, :appointments, 'data-association-insertion-node' => "#appointments-patient ol", 'data-association-insertion-method' => "append", :wrap_object => Proc. new {|appointment| appointment.build_patient; appointment } %> <hr/>
25. Ruby on Rails Formulário Physician <fieldset id="appointments-patient"> <ol> <%= f.fields_for :appointments do |appointment| %> <%= render partial: "appointment_fields", locals: { f: appointment } %> <% end %> </ol> <fieldset/>
26. Ruby on Rails _appointment_fields.html.erb <li class="control-group nested-fields"> <div class="controls"> <%= f.datetime_select :appointment_date %>> <%= f.fields_for :patient do |appointment_patient| %> <%= appointment_patient.text_field :name %> <% end %> <%= link_to_remove_association "remove", f %> </div> </li>
27. Ruby on Rails Obrigado!