Fix reblogged/favourited caching; add API endpoints for who favd/reblogged status

app/controllers/api/v1/statuses_controller.rb

@@ -2,18 +2,28 @@ class Api::V1::StatusesController < ApiController
   before_action -> { doorkeeper_authorize! :read }, except: [:create, :destroy, :reblog, :unreblog, :favourite, :unfavourite]
   before_action -> { doorkeeper_authorize! :write }, only:  [:create, :destroy, :reblog, :unreblog, :favourite, :unfavourite]
 
-  respond_to    :json
+  before_action :set_status, only: [:show, :context, :reblogged_by, :favourited_by]
+
+  respond_to :json
 
   def show
-    @status = Status.find(params[:id])
   end
 
   def context
-    @status  = Status.find(params[:id])
     @context = OpenStruct.new({ ancestors: @status.ancestors, descendants: @status.descendants })
     set_maps([@status] + @context[:ancestors] + @context[:descendants])
   end
 
+  def reblogged_by
+    @accounts = @status.reblogs.includes(:account).limit(40).map(&:account)
+    render action: :accounts
+  end
+
+  def favourited_by
+    @accounts = @status.favourites.includes(:account).limit(40).map(&:account)
+    render action: :accounts
+  end
+
   def create
     @status = PostStatusService.new.call(current_user.account, params[:status], params[:in_reply_to_id].blank? ? nil : Status.find(params[:in_reply_to_id]), params[:media_ids])
     render action: :show
@@ -63,4 +73,10 @@ class Api::V1::StatusesController < ApiController
     set_maps(@statuses)
     render action: :index
   end
+
+  private
+
+  def set_status
+    @status = Status.find(params[:id])
+  end
 end

app/views/api/v1/statuses/_show.rabl

+cache
 attributes :id, :created_at, :in_reply_to_id
 
 node(:uri)              { |status| TagManager.instance.uri_for(status) }
@@ -5,8 +6,6 @@ node(:content)          { |status| Formatter.instance.format(status) }
 node(:url)              { |status| TagManager.instance.url_for(status) }
 node(:reblogs_count)    { |status| status.reblogs_count }
 node(:favourites_count) { |status| status.favourites_count }
-node(:favourited, if: proc { !current_account.nil? }) { |status| defined?(@favourites_map) ? !!@favourites_map[status.id] : current_account.favourited?(status) }
-node(:reblogged,  if: proc { !current_account.nil? }) { |status| defined?(@reblogs_map)    ? !!@reblogs_map[status.id]    : current_account.reblogged?(status) }
 
 child :account do
   extends 'api/v1/accounts/show'

app/views/api/v1/statuses/accounts.rabl

+collection @accounts
+extends 'api/v1/accounts/show'

app/views/api/v1/statuses/show.rabl

 object @status
-cache
 
 extends 'api/v1/statuses/_show'
 
+node(:favourited, if: proc { !current_account.nil? }) { |status| defined?(@favourites_map) ? !!@favourites_map[status.id] : current_account.favourited?(status) }
+node(:reblogged,  if: proc { !current_account.nil? }) { |status| defined?(@reblogs_map)    ? !!@reblogs_map[status.id]    : current_account.reblogged?(status) }
+
 child :reblog => :reblog do
   extends 'api/v1/statuses/_show'
+
+  node(:favourited, if: proc { !current_account.nil? }) { |status| defined?(@favourites_map) ? !!@favourites_map[status.id] : current_account.favourited?(status) }
+  node(:reblogged,  if: proc { !current_account.nil? }) { |status| defined?(@reblogs_map)    ? !!@reblogs_map[status.id]    : current_account.reblogged?(status) }
 end

config/routes.rb

@@ -59,6 +59,8 @@ Rails.application.routes.draw do
 
         member do
           get :context
+          get :reblogged_by
+          get :favourited_by
 
           post :reblog
           post :unreblog