Rails e suas Gems
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The document discusses several Ruby on Rails gems including Paperclip, Devise, and Twitter. It provides code examples for integrating each gem, such as adding them to the Gemfile and making appropriate modifications to models, views, and controllers. Configuration and usage of Paperclip for image uploading, Devise for user authentication, and Twitter for displaying Twitter user information and tweets are covered.
![Rails e suas Gems @rr_martins Rodrigo Martins [email_address]](https://image.slidesharecdn.com/rubyesuasgems-111127152311-phpapp02/85/Rails-e-suas-Gems-1-320.jpg)
![Um pouco de Ruby! (Array) >> evento = Array.new >> evento << "LI" => ["LI"] >> evento << "Liberdade Interativa" => ["LI", "Liberdade Interativa"] >> evento << "RockOnRails" => ["LI", "Liberdade Interativa", "RockOnRails"]](https://image.slidesharecdn.com/rubyesuasgems-111127152311-phpapp02/85/Rails-e-suas-Gems-5-320.jpg)
![Devise Autenticando Controller: before_filter :authenticate_user! before_filter :authenticate_user!, :except => [:index, :show, :create]](https://image.slidesharecdn.com/rubyesuasgems-111127152311-phpapp02/85/Rails-e-suas-Gems-23-320.jpg)
![Duvidas? @rr_martins Rodrigo Martins [email_address]](https://image.slidesharecdn.com/rubyesuasgems-111127152311-phpapp02/85/Rails-e-suas-Gems-30-320.jpg)
![Obrigado! @rr_martins Rodrigo Martins [email_address]](https://image.slidesharecdn.com/rubyesuasgems-111127152311-phpapp02/85/Rails-e-suas-Gems-31-320.jpg)
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Rails e suas Gems
- 1. Rails e suas Gems @rr_martins Rodrigo Martins [email_address]
- 2. Gems? ? bom assim por dentro?
- 3. Gems? http://docs.rubygems.org/ Gerenciador de pacotes do Ruby. Uiiii... Uma Joia... :D
- 4. Um pouco de Ruby! (String) >> string = " liberdade Interativa! eu Fui!" => " liberdade Interativa! eu Fui!" >> def chamada(evento="LI") >> puts evento.to_s+" Eu fui!" >> end >> chamada("Liberdade Interativa") => Liberdade Interativa Eu fui! >> chamada => LI Eu fui!
- 5. Um pouco de Ruby! (Array) >> evento = Array.new >> evento << "LI" => ["LI"] >> evento << "Liberdade Interativa" => ["LI", "Liberdade Interativa"] >> evento << "RockOnRails" => ["LI", "Liberdade Interativa", "RockOnRails"]
- 6. Um pouco de Ruby! (Array) >> def chamada(evento) >> evento.each do |even| >> puts even.to_s+" Eu Fui! :D" >> end >> end >> chamada(evento) => LI Eu Fui! :D => Liberdade Interativa Eu Fui! :D => RockOnRails Eu Fui! :D
- 7. J¨¢ posso usar as Gems? Calma! Vamos com calma, as Gems precisam do Rails!
- 9. Gems Apresentadas! -> Paperclip->github.com/thoughtbot/paperclip Sugest?o: Rodrigo Mendon?a (rails-br) -> Devise -> github.com/plataformatec/devise Sugest?o: Celso Dantas (rails-br) -> Twitter -> github.com/jnunemaker/twitter
- 10. Projeto Rails criado.. rails new <projeto>
- 11. Gems Apresentadas! -> Paperclip -> github.com/thoughtbot/paperclip Sugest?o: Rodrigo Mendon?a (rails-br) -> Devise -> github.com/plataformatec/devise Sugest?o: Celso Dantas (rails-br) -> Twitter -> github.com/jnunemaker/twitter
- 12. PaperClip No GemFile: gem "paperclip", "~> 2.4" No Model: (Post) has_attached_file :image, :styles => { :medium => "300x300>", :thumb => "100x100>" }
- 13. PaperClip Migrate : class AddImageToPost < ActiveRecord::Migration def self.up add_column :posts, :image_file_name, :string add_column :posts, :image_content_type, :string add_column :posts, :image_file_size, :integer add_column :posts, :image_updated_at, :datetime end def self.down remove_column :posts, :image_updated_at remove_column :posts, :image_file_size remove_column :posts, :image_content_type remove_column :posts, :image_file_name end end
- 14. PaperClip <%= form_for :post, :url => posts_path, : html => { :class => :form, :multipart => true } do |f| -%> <div class="field"> <strong><%= f.label :data %></strong> <%= f.hidden_field :data, :value => Time.now %> <%= f.label Time.now.to_date %> </div> <div class="field"> <%= f.label :titulo %><br /> <%= f.text_field :titulo %> </div> <div class="field"> <%= f.label :chamada %><br /> <%= f.text_field :chamada %> </div>
- 15. PaperClip <div class="field"> <%= f.label :texto %><br /> <%= f.text_area :texto %> </div> <div class="field"> <%= f.label "Imagem" %> <%= f.file_field :image %> </div> <div class="actions"> <%= f.submit %> </div> <% end -%>
- 16. PaperClip View Show: <%= image_tag @post.image.url if !@post.image_file_name.nil? %> <%= image_tag @post.image.url(:medium) if !@post.image_file_name.nil? %> <%= image_tag @post.image.url(:thumb) if !@post.image_file_name.nil? %>
- 17. PaperClip
- 18. Gems Apresentadas! -> Paperclip->github.com/thoughtbot/paperclip Sugest?o: Rodrigo Mendon?a (rails-br) -> Devise -> github.com/plataformatec/devise Sugest?o: Celso Dantas (rails-br) -> Twitter -> github.com/jnunemaker/twitter
- 19. Devise
- 20. Devise Gemfile: gem ¡°devise¡± Iniciando o Devise: rails generate devise:install Configurando um model: rails generate devise usuario
- 21. Devise
- 23. Devise Autenticando Controller: before_filter :authenticate_user! before_filter :authenticate_user!, :except => [:index, :show, :create]
- 24. Gems Apresentadas! -> Paperclip->github.com/thoughtbot/paperclip Sugest?o: Rodrigo Mendon?a (rails-br) -> Devise -> github.com/plataformatec/devise Sugest?o: Celso Dantas (rails-br) -> Twitter -> github.com/jnunemaker/twitter
- 25. Twitter
- 26. Twitter GemFile: gem 'twitter'
- 27. Twitter <table border="0"> <tr> <td><%= image_tag Twitter.profile_image("rr_martins", :size => 'bigger') %></td> <td><%= Twitter.user('rr_martins').location %> <br> <%= Twitter.user('rr_martins').description %> </td>
- 28. Twitter </tr> <% Twitter.user_timeline("rr_martins",{:count=>5}).each do |twit| %> <tr> <td colspan="2"><%= twit.text %></td> </tr> <% end %> </table>
- 29. Fontes http://github.com https://www.ruby-toolbox.com http://rubygems.org/ Em breve: http://rrmartins.com https://github.com/rrmartins/blog
- 30. Duvidas? @rr_martins Rodrigo Martins [email_address]
- 31. Obrigado! @rr_martins Rodrigo Martins [email_address]