diaspora/app/presenters/post_presenter.rb

88 lines
1.9 KiB
Ruby

require File.join(File.dirname(__FILE__), '..', '..', 'lib', 'template_picker')
class PostPresenter
attr_accessor :post, :current_user
def initialize(post, current_user = nil)
self.post = post
self.current_user = current_user
end
def to_json(options = {})
{
:post => self.post.as_api_response(:backbone).update(
{
:user_like => self.user_like,
:user_participation => self.user_participation,
:likes_count => self.post.likes.count,
:participations_count => self.post.participations.count,
:reshares_count => self.post.reshares.count,
:user_reshare => self.user_reshare,
:next_post => self.next_post_path,
:previous_post => self.previous_post_path
}),
:templateName => template_name
}
end
def user_like
return unless user_signed_in?
if like = post.likes.where(:author_id => person.id).first
like.as_api_response(:backbone)
end
end
def user_participation
return unless user_signed_in?
if participation = post.participations.where(:author_id => person.id).first
participation.as_api_response(:backbone)
end
end
def user_reshare
return unless user_signed_in?
self.post.reshares.where(:author_id => person.id).first
end
def next_post_path
if n = next_post
Rails.application.routes.url_helpers.post_path(n)
end
end
def previous_post_path
if p = previous_post
Rails.application.routes.url_helpers.post_path(p)
end
end
def next_post
post_base.next(post)
end
def previous_post
post_base.previous(post)
end
def template_name
@template_name ||= TemplatePicker.new(post).template_name
end
protected
def post_base
if current_user
current_user.posts_from(self.post.author)
else
self.post.author.posts.all_public
end
end
def person
self.current_user.person
end
def user_signed_in?
current_user.present?
end
end