[Admin] Ability to reowner posts for special conditions

app/controllers/admin/reowner_controller.rb

@@ -0,0 +1,38 @@
+module Admin
+  class ReownerController < ApplicationController
+    before_action :admin_only
+
+    def new
+    end
+
+    def create
+      @reowner_params = new_params
+      @old_user = User.find_by_name_or_id(@reowner_params[:old_owner])
+      @new_user = User.find_by_name_or_id(@reowner_params[:new_owner])
+      query = @reowner_params[:search]
+      unless @old_user && @new_user
+        flash[:error] = "Old or new user failed to look up. Use !id for name to use an id."
+        redirect_back fallback_location: new_admin_reowner_path
+        return
+      end
+      ModAction.log(:post_owner_reassign)
+      Post.tag_match("user:!#{@old_user.id} #{query}").limit(300).records.each do |p|
+        p.do_not_version_changes = true
+        p.update({uploader_id: @new_user.id})
+        p.versions.where(updater_id: @old_user.id).each do |pv|
+          pv.update_column(:updater_id, @new_user.id)
+          pv.reload
+          pv.__elasticsearch__.index_document
+        end
+      end
+      flash[:notice] = "Post ownership reassigned"
+      redirect_back fallback_location: new_admin_reowner_path
+    end
+
+    private
+    def new_params
+      params.require(:reowner).permit([:old_owner, :search, :new_owner])
+    end
+  end
+end
+

app/views/admin/reowner/new.html.erb

@@ -0,0 +1,21 @@
+<div>
+  <h4>Change post ownership</h4>
+  <%= form_tag(admin_reowner_path, :method => :post, :class => "simple_form") do %>
+    <div class="input">
+      <label>Old Owner</label>
+      <%= text_field :reowner, :old_owner, placeholder: 'Use ! in front of an id for an id.', size: 40 %>
+    </div>
+    <div class="input">
+      <label>New Owner</label>
+      <%= text_field :reowner, :new_owner, placeholder: 'Use ! in front of an id for an id.', size: 40 %>
+    </div>
+    <div class="input">
+      <label>Search Query</label>
+      <%= text_field :reowner, :search, size: 40 %>
+    </div>
+
+    <div class="input">
+      <%= submit_tag "Submit" %>
+    </div>
+  <% end %>
+</div>

config/routes.rb

@@ -21,6 +21,7 @@ Rails.application.routes.draw do
     resource :alias_and_implication_import, :only => [:new, :create]
     resource :dashboard, :only => [:show]
     resources :exceptions, only: [:index, :show]
+    resource :reowner, controller: 'reowner', only: [:new, :create]
   end
   resources :edit_histories
   namespace :moderator do