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Screencast: Declarative Authorization
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Resourcen:
- Declarative Authorization
- Rails Authorization Plugins
- Episode 160: Authologic
- Episode 17: HABTM Checkboxes
- Full Episode Source Code
Quellcode:
[bash] sudo rake gems:install [/bash]
[ruby] # config/environment.rb config.gem “declarative_authorization”, :source => “http://gemcutter.org”
# config/authorization_rules.rb authorization do role :admin do has_permission_on [:articles, :comments], :to => [:index, :show, :new, :create, :edit, :update, :destroy] end
role :guest do has_permission_on :articles, :to => [:index, :show] has_permission_on :comments, :to => [:new, :create] has_permission_on :comments, :to => [:edit, :update] do if_attribute :user => is { user } end end
role :moderator do includes :guest has_permission_on :comments, :to => [:edit, :update] end
role :author do includes :guest has_permission_on :articles, :to => [:new, :create] has_permission_on :articles, :to => [:edit, :update] do if_attribute :user => is { user } end end end
# application_controller.rb before_filter { |c| Authorization.current_user = c.current_user }
protected
def permission_denied flash[:error] = “Sorry, you are not allowed to access that page.” redirect_to root_url end
# articles_controller.rb filter_resource_access [/ruby]
[html]
<% if permitted_to? :edit, @article %> <%= link_to “Edit”, edit_article_path(@article) %> | <% end %> <% if permitted_to? :destroy, @article %> <%= link_to “Destroy”, @article, :method => :delete, :confirm => “Are you sure?” %> | <% end %> <%= link_to “Back to Articles”, articles_path %>
…<% if permitted_to? :edit, comment %> <%= link_to “Edit”, edit_comment_path(comment) %> <% end %> <% if permitted_to? :destroy, comment %> | <%= link_to “Destroy”, comment, :method => :delete, :confirm => “Are you sure?” %> <% end %>
<% if permitted\_to? :create, Article.new %><%= link\_to "New Article", new\_article\_path %>
<% end %> \[/html\]