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Contents
# Activities follow the {Activity Streams}[http://activitystrea.ms/] standard.
#
# == Activities and Ties
# Every activity is attached to a Tie, which defines the sender, the receiver and
# the relation in which the activity is transferred
#
# == Wall
# The Activity.wall(ties) scope provides all the activities attached to a set of ties
#
class Activity < ActiveRecord::Base
has_ancestry
belongs_to :activity_verb
belongs_to :tie,
:include => [ :sender ]
has_one :sender,
:through => :tie
has_one :receiver,
:through => :tie
has_one :relation,
:through => :tie
delegate :sender_subject,
:receiver_subject,
:to => :tie
has_many :activity_object_activities,
:dependent => :destroy
has_many :activity_objects,
:through => :activity_object_activities
scope :wall, lambda { |ties|
select("DISTINCT activities.*").
roots.
where(:tie_id => ties).
order("created_at desc")
}
# The name of the verb of this activity
def verb
activity_verb.name
end
# Set the name of the verb of this activity
def verb=(name)
self.activity_verb = ActivityVerb[name]
end
# The comments about this activity
def comments
children.includes(:activity_objects).where('activity_objects.object_type' => "Comment")
end
# The 'like' qualifications emmited to this activities
def likes
children.joins(:activity_verb).where('activity_verbs.name' => "like")
end
def liked_by(user) #:nodoc:
likes.includes(:tie) & Tie.sent_by(user)
end
# Does user like this activity?
def liked_by?(user)
liked_by(user).present?
end
# The first object of this activity
def direct_object
activity_objects.first.try(:object)
end
end
Version data entries
16 entries across 16 versions & 1 rubygems