Record deleted(by mod) status to prevent re-appear (#10732)

* Record deleted(by mod) status to prevent re-appear

* Move to Tombstone

* Add missing migration script

app/models/form/status_batch.rb

@@ -35,6 +35,7 @@ class Form::StatusBatch
   def delete_statuses
     Status.where(id: status_ids).reorder(nil).find_each do |status|
       RemovalWorker.perform_async(status.id)
+      Tombstone.find_or_create_by(uri: status.uri, account: status.account, by_moderator: true)
       log_action :destroy, status
     end
 

app/models/tombstone.rb

@@ -9,6 +9,7 @@
 #  uri          :string           not null
 #  created_at   :datetime         not null
 #  updated_at   :datetime         not null
+#  by_moderator :boolean
 #
 
 class Tombstone < ApplicationRecord

db/migrate/20190509164208_add_by_moderator_to_tombstone.rb

@@ -0,0 +1,5 @@
+class AddByModeratorToTombstone < ActiveRecord::Migration[5.2]
+  def change
+    add_column :tombstones, :by_moderator, :boolean
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2019_04_20_025523) do
+ActiveRecord::Schema.define(version: 2019_05_09_164208) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -382,9 +382,9 @@ ActiveRecord::Schema.define(version: 2019_04_20_025523) do
   create_table "mutes", force: :cascade do |t|
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.boolean "hide_notifications", default: true, null: false
     t.bigint "account_id", null: false
     t.bigint "target_account_id", null: false
-    t.boolean "hide_notifications", default: true, null: false
     t.index ["account_id", "target_account_id"], name: "index_mutes_on_account_id_and_target_account_id", unique: true
     t.index ["target_account_id"], name: "index_mutes_on_target_account_id"
   end
@@ -676,6 +676,7 @@ ActiveRecord::Schema.define(version: 2019_04_20_025523) do
     t.string "uri", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.boolean "by_moderator"
     t.index ["account_id"], name: "index_tombstones_on_account_id"
     t.index ["uri"], name: "index_tombstones_on_uri"
   end