Commit 519119f6 authored by Akihiko Odaki's avatar Akihiko Odaki Committed by Eugen Rochko

Paginate ancestor statuses in public page (#7102)

This also limits the statuses returned by API, but pagination is not
implemented in Web API yet. I still expect it brings user experience
better than making a user wait to fetch all ancestor statuses and flooding
the column with them.
parent d9b62e34
......@@ -17,7 +17,7 @@ class Api::V1::StatusesController < Api::BaseController
end
def context
ancestors_results = @status.in_reply_to_id.nil? ? [] : @status.ancestors(current_account)
ancestors_results = @status.in_reply_to_id.nil? ? [] : @status.ancestors(DEFAULT_STATUSES_LIMIT, current_account)
descendants_results = @status.descendants(current_account)
loaded_ancestors = cache_collection(ancestors_results, Status)
loaded_descendants = cache_collection(descendants_results, Status)
......
......@@ -4,6 +4,8 @@ class StatusesController < ApplicationController
include SignatureAuthentication
include Authorization
ANCESTORS_LIMIT = 20
layout 'public'
before_action :set_account
......@@ -16,8 +18,9 @@ class StatusesController < ApplicationController
def show
respond_to do |format|
format.html do
@ancestors = @status.reply? ? cache_collection(@status.ancestors(current_account), Status) : []
@descendants = cache_collection(@status.descendants(current_account), Status)
@ancestors = @status.reply? ? cache_collection(@status.ancestors(ANCESTORS_LIMIT, current_account), Status) : []
@next_ancestor = @ancestors.size < ANCESTORS_LIMIT ? nil : @ancestors.shift
@descendants = cache_collection(@status.descendants(current_account), Status)
render 'stream_entries/show'
end
......
......@@ -6,7 +6,8 @@
background: $simple-background-color;
.detailed-status.light,
.status.light {
.status.light,
.more.light {
border-bottom: 1px solid $ui-secondary-color;
animation: none;
}
......@@ -290,6 +291,17 @@
text-decoration: underline;
}
}
.more {
color: $classic-primary-color;
display: block;
padding: 14px;
text-align: center;
&:not(:hover) {
text-decoration: none;
}
}
}
.embed {
......
......@@ -3,8 +3,8 @@
module StatusThreadingConcern
extend ActiveSupport::Concern
def ancestors(account = nil)
find_statuses_from_tree_path(ancestor_ids, account)
def ancestors(limit, account = nil)
find_statuses_from_tree_path(ancestor_ids(limit), account)
end
def descendants(account = nil)
......@@ -13,14 +13,21 @@ module StatusThreadingConcern
private
def ancestor_ids
Rails.cache.fetch("ancestors:#{id}") do
ancestor_statuses.pluck(:id)
def ancestor_ids(limit)
key = "ancestors:#{id}"
ancestors = Rails.cache.fetch(key)
if ancestors.nil? || ancestors[:limit] < limit
ids = ancestor_statuses(limit).pluck(:id).reverse!
Rails.cache.write key, limit: limit, ids: ids
ids
else
ancestors[:ids].last(limit)
end
end
def ancestor_statuses
Status.find_by_sql([<<-SQL.squish, id: in_reply_to_id])
def ancestor_statuses(limit)
Status.find_by_sql([<<-SQL.squish, id: in_reply_to_id, limit: limit])
WITH RECURSIVE search_tree(id, in_reply_to_id, path)
AS (
SELECT id, in_reply_to_id, ARRAY[id]
......@@ -34,7 +41,8 @@ module StatusThreadingConcern
)
SELECT id
FROM search_tree
ORDER BY path DESC
ORDER BY path
LIMIT :limit
SQL
end
......
......@@ -14,6 +14,10 @@
entry_classes = h_class + ' ' + mf_classes + ' ' + style_classes
- if status.reply? && include_threads
- if @next_ancestor
.entry{ class: entry_classes }
= link_to short_account_status_url(@next_ancestor.account.username, @next_ancestor), class: 'more light' do
= t('statuses.show_more')
= render partial: 'stream_entries/status', collection: @ancestors, as: :status, locals: { is_predecessor: true, direct_reply_id: status.in_reply_to_id }
.entry{ class: entry_classes }
......
......@@ -14,34 +14,34 @@ describe StatusThreadingConcern do
let!(:viewer) { Fabricate(:account, username: 'viewer') }
it 'returns conversation history' do
expect(reply3.ancestors).to include(status, reply1, reply2)
expect(reply3.ancestors(4)).to include(status, reply1, reply2)
end
it 'does not return conversation history user is not allowed to see' do
reply1.update(visibility: :private)
status.update(visibility: :direct)
expect(reply3.ancestors(viewer)).to_not include(reply1, status)
expect(reply3.ancestors(4, viewer)).to_not include(reply1, status)
end
it 'does not return conversation history from blocked users' do
viewer.block!(jeff)
expect(reply3.ancestors(viewer)).to_not include(reply1)
expect(reply3.ancestors(4, viewer)).to_not include(reply1)
end
it 'does not return conversation history from muted users' do
viewer.mute!(jeff)
expect(reply3.ancestors(viewer)).to_not include(reply1)
expect(reply3.ancestors(4, viewer)).to_not include(reply1)
end
it 'does not return conversation history from silenced and not followed users' do
jeff.update(silenced: true)
expect(reply3.ancestors(viewer)).to_not include(reply1)
expect(reply3.ancestors(4, viewer)).to_not include(reply1)
end
it 'does not return conversation history from blocked domains' do
viewer.block_domain!('example.com')
expect(reply3.ancestors(viewer)).to_not include(reply2)
expect(reply3.ancestors(4, viewer)).to_not include(reply2)
end
it 'ignores deleted records' do
......@@ -49,10 +49,32 @@ describe StatusThreadingConcern do
second_status = Fabricate(:status, thread: first_status, account: alice)
# Create cache and delete cached record
second_status.ancestors
second_status.ancestors(4)
first_status.destroy
expect(second_status.ancestors).to eq([])
expect(second_status.ancestors(4)).to eq([])
end
it 'can return more records than previously requested' do
first_status = Fabricate(:status, account: bob)
second_status = Fabricate(:status, thread: first_status, account: alice)
third_status = Fabricate(:status, thread: second_status, account: alice)
# Create cache
second_status.ancestors(1)
expect(third_status.ancestors(2)).to eq([first_status, second_status])
end
it 'can return fewer records than previously requested' do
first_status = Fabricate(:status, account: bob)
second_status = Fabricate(:status, thread: first_status, account: alice)
third_status = Fabricate(:status, thread: second_status, account: alice)
# Create cache
second_status.ancestors(2)
expect(third_status.ancestors(1)).to eq([second_status])
end
end
......
......@@ -48,7 +48,7 @@ describe 'stream_entries/show.html.haml', without_verify_partial_doubles: true d
assign(:stream_entry, reply.stream_entry)
assign(:account, alice)
assign(:type, reply.stream_entry.activity_type.downcase)
assign(:ancestors, reply.stream_entry.activity.ancestors(bob) )
assign(:ancestors, reply.stream_entry.activity.ancestors(1, bob) )
assign(:descendants, reply.stream_entry.activity.descendants(bob))
render
......
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