diaspora/lib/aspect_stream.rb

105 lines
3.3 KiB
Ruby

# Copyright (c) 2010-2011, Diaspora Inc. This file is
# licensed under the Affero General Public License version 3 or later. See
# the COPYRIGHT file.
class AspectStream
attr_reader :max_time, :order
# @param user [User]
# @param inputted_aspect_ids [Array<Integer>] Ids of aspects for given stream
# @param aspect_ids [Array<Integer>] Aspects this stream is responsible for
# @opt max_time [Integer] Unix timestamp of stream's post ceiling
# @opt order [String] Order of posts (i.e. 'created_at', 'updated_at')
# @return [void]
def initialize(user, inputted_aspect_ids, opts={})
@user = user
@inputted_aspect_ids = inputted_aspect_ids
@max_time = opts[:max_time]
@order = opts[:order]
end
# Filters aspects given the stream's aspect ids on initialization and the user.
# Will disclude aspects from inputted aspect ids if user is not associated with their
# target aspects.
#
# @return [ActiveRecord::Association<Aspect>] Filtered aspects given the stream's user
def aspects
@aspects ||= lambda do
a = @user.aspects
a = a.where(:id => @inputted_aspect_ids) if @inputted_aspect_ids.length > 0
a
end.call
end
# Maps ids into an array from #aspects
#
# @return [Array<Integer>] Aspect ids
def aspect_ids
@aspect_ids ||= aspects.map { |a| a.id }
end
# @return [ActiveRecord::Association<Post>] AR association of posts
def posts
# NOTE(this should be something like Post.all_for_stream(@user, aspect_ids, {}) that calls visible_posts
@posts ||= @user.visible_posts(:by_members_of => aspect_ids,
:type => ['StatusMessage', 'Reshare', 'ActivityStreams::Photo'],
:order => "#{@order} DESC",
:max_time => @max_time
).includes(:mentions => {:person => :profile}, :author => :profile)
end
# @return [ActiveRecord::Association<Person>] AR association of people within stream's given aspects
def people
@people ||= Person.all_from_aspects(aspect_ids, @user).includes(:profile)
end
def link(opts={})
Rails.application.routes.url_helpers.aspects_path(opts.merge(:a_ids => aspect_ids))
end
# The first aspect in #aspects, given the stream is not for all aspects, or #aspects size is 1
# @note aspects.first is used for mobile. NOTE(this is a hack and should be fixed)
# @return [Aspect,Symbol]
def aspect
if !for_all_aspects? || aspects.size == 1
aspects.first
end
end
def ajax_stream?
for_all_aspects?
end
def title
if self.for_all_aspects?
I18n.t('.stream')
else
self.aspects.to_sentence
end
end
# Determine whether or not the stream is displaying across
# all of the user's aspects.
#
# @return [Boolean]
def for_all_aspects?
@all_aspects ||= aspect_ids.length == @user.aspects.size
end
def contacts_title
if self.for_all_aspects? || self.aspect_ids.size > 1
I18n.t('_contacts')
else
"#{self.aspect.name}(#{self.people.size})"
end
end
def contacts_link
if for_all_aspects? || aspect_ids.size > 1
Rails.application.routes.url_helpers.contacts_path
else
Rails.application.routes.url_helpers.contacts_path(:a_id => @stream.aspect.id)
end
end
end