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Pre-loading polymorphic associations for Atom feeds

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This commit is contained in:
Eugen Rochko 2016-03-24 13:21:53 +01:00
parent 7e58303a8d
commit 0f5bbb999c
4 changed files with 22 additions and 6 deletions
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9
app/controllers/accounts_controller.rb
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@ -7,7 +7,14 @@ class AccountsController < ApplicationController
def show def show
respond_to do |format| respond_to do |format|
format.html { @statuses = @account.statuses.order('id desc').with_includes.with_counters.paginate(page: params[:page], per_page: 10)} format.html { @statuses = @account.statuses.order('id desc').with_includes.with_counters.paginate(page: params[:page], per_page: 10)}
format.atom { @entries = @account.stream_entries.order('id desc').with_includes.paginate_by_max_id(20, params[:max_id] || nil) }
format.atom do
@entries = @account.stream_entries.order('id desc').with_includes.paginate_by_max_id(20, params[:max_id] || nil)
ActiveRecord::Associations::Preloader.new.preload(@entries.select { |a| a.activity_type == 'Status' }, :mentioned_accounts, reblog: :account, thread: :account)
ActiveRecord::Associations::Preloader.new.preload(@entries.select { |a| a.activity_type == 'Favourite' }, status: [:account, :thread, :mentioned_accounts])
ActiveRecord::Associations::Preloader.new.preload(@entries.select { |a| a.activity_type == 'Follow' }, :target_account)
end
end end
end end

7
app/models/concerns/paginable.rb Normal file
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@ -0,0 +1,7 @@
module Paginable
extend ActiveSupport::Concern
included do
scope :paginate_by_max_id, -> (limit, max_id) { order('id desc').limit(limit).where(max_id.nil? ? '1=1' : ['id < ?', max_id]) }
end
end

5
app/models/status.rb
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@ -1,4 +1,6 @@
class Status < ActiveRecord::Base class Status < ActiveRecord::Base
include Paginable
belongs_to :account, inverse_of: :statuses belongs_to :account, inverse_of: :statuses
belongs_to :thread, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :replies belongs_to :thread, foreign_key: 'in_reply_to_id', class_name: 'Status', inverse_of: :replies
@ -16,8 +18,7 @@ class Status < ActiveRecord::Base
validates :text, presence: true, if: Proc.new { |s| s.local? && !s.reblog? } validates :text, presence: true, if: Proc.new { |s| s.local? && !s.reblog? }
scope :with_counters, -> { select('statuses.*, (select count(r.id) from statuses as r where r.reblog_of_id = statuses.id) as reblogs_count, (select count(f.id) from favourites as f where f.status_id = statuses.id) as favourites_count') } scope :with_counters, -> { select('statuses.*, (select count(r.id) from statuses as r where r.reblog_of_id = statuses.id) as reblogs_count, (select count(f.id) from favourites as f where f.status_id = statuses.id) as favourites_count') }
scope :with_includes, -> { includes(:account, reblog: :account, thread: :account) } scope :with_includes, -> { includes(:account, :mentioned_accounts, reblog: [:account, :mentioned_accounts], thread: [:account, :mentioned_accounts]) }
scope :paginate_by_max_id, -> (limit, max_id) { order('id desc').limit(limit).where(max_id.nil? ? '1=1' : ['id < ?', max_id]) }
def local? def local?
self.uri.nil? self.uri.nil?

3
app/models/stream_entry.rb
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@ -1,11 +1,12 @@
class StreamEntry < ActiveRecord::Base class StreamEntry < ActiveRecord::Base
include Paginable
belongs_to :account, inverse_of: :stream_entries belongs_to :account, inverse_of: :stream_entries
belongs_to :activity, polymorphic: true belongs_to :activity, polymorphic: true
validates :account, :activity, presence: true validates :account, :activity, presence: true
scope :with_includes, -> { includes(:activity) } scope :with_includes, -> { includes(:activity) }
scope :paginate_by_max_id, -> (limit, max_id) { order('id desc').limit(limit).where(max_id.nil? ? '1=1' : ['id < ?', max_id]) }
def object_type def object_type
orphaned? ? :activity : (targeted? ? :activity : self.activity.object_type) orphaned? ? :activity : (targeted? ? :activity : self.activity.object_type)