Activities is a gem that enables social activities in ActiveRecord objects.
sudo gem install activities
You have to create a migration.
-
Rails 2:
script/generate migration create_activities
-
Rails 3:
rails generate migration create_activities
Then paste the following code.
class CreateActivities < ActiveRecord::Migration def self.up create_table :activities do |t| t.references :tracker, :polymorphic => true, :null => false t.references :trackable, :polymorphic => true, :null => false t.string :action, :null => false t.text :data, :null => true t.timestamps end add_index :activities, [:tracker_id, :trackable_id] add_index :activities, [:tracker_id, :trackable_id, :action] end def self.down drop_table :activities end end
If you want the source go to github.com/fnando/activities
Activities is plugged on associations. So, all you have to do is add something like this:
class User < ActiveRecord::Base has_many :projects activities_for :projects do track :renamed, :if => proc {|r| !r.new_record? && r.name_changed? }, :on => :save track :create track :update track :destroy end end
This will add activities when you create, update, destroy a project or the change its name.
To retrieve the activities, you can use the association activities
.
@user.activities.all
By default, all attributes are stored in a field called data
. You should overwrite the method to_activity
and return a hash with the attributes that you really want to be saved.
class Project < ActiveRecord::Base belongs_to :user def to_activity { :name => name, :status => status } end end
To display the activities, you should use the helper render_activity
.
<% for activity in @activities %> <%= render_activity @activity %> <% end %>
The render_activity
helper will render a partial as app/views/activities/TRACKABLE_TYPE/ACTION
. So, if you want to render activities for that project, you should create the following files:
app/views/activities/project/_renamed.html.erb app/views/activities/project/_create.html.erb app/views/activities/project/_update.html.erb app/views/activities/project/_destroy.html.erb
The activity object will be available and you can display something like this:
<p> <%= tracker.name %> created the repository <%= link_to data[:name], project_path(trackable) %> <%= time_ago_in_words data[:created_at] %> </p>
(The MIT License)
Copyright © 2010:
-
Nando Vieira - nandovieira.com.br
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