Delete Orphan Pages in Category

If a Web has categories defined, you can delete orphaned pages in a given category
(in addition to being able to delete all orphaned pages).

app/controllers/admin_controller.rb

@@ -104,6 +104,23 @@ class AdminController < ApplicationController
     end
   end
   
+  def remove_orphaned_pages_in_category
+    unless (request.post? || ENV["RAILS_ENV"] == "test")
+      headers['Allow'] = 'POST'
+      render(:status => 405, :text => 'You must use an HTTP POST', :layout => 'error')
+      return
+    end
+    if wiki.authenticate(params['system_password_orphaned_in_category'])
+      category = params['category']
+      wiki.remove_orphaned_pages_in_category(@web_name, category)
+      flash[:info] = "Orphaned pages in category \"#{category}\" removed"
+      redirect_to :controller => 'wiki', :web => @web_name, :action => 'list'
+    else
+      flash[:error] = password_error(params['system_password_orphaned_in_category'])
+      redirect_to :controller => 'admin', :web => @web_name, :action => 'edit_web'
+    end
+  end
+
   def delete_web
     unless (request.post? || ENV["RAILS_ENV"] == "test")
       headers['Allow'] = 'POST'

app/controllers/web_sweeper.rb

@@ -15,4 +15,9 @@ class WebSweeper < ActionController::Caching::Sweeper
   def after_remove_orphaned_pages(web)
     expire_cached_summary_pages(web)
   end
+
+  def after_remove_orphaned_pages_in_category(web)
+    expire_cached_summary_pages(web)
+  end
+
 end

app/models/page_set.rb

@@ -73,6 +73,12 @@ class PageSet < Array
     }
   end
 
+  def pages_in_category(category)
+    self.select { |page|
+      WikiReference.pages_in_category(web, category).map.include?(page.name)
+    }
+  end
+
   # Returns all the wiki words in this page set for which
   # there are no pages in this page set's web
   def wanted_pages

app/models/wiki.rb

@@ -54,6 +54,12 @@ class Wiki
     web.remove_pages(web.select.orphaned_pages)
   end
   
+  def remove_orphaned_pages_in_category(web_address,category)
+    web = Web.find_by_address(web_address)
+    pages_in_category = PageSet.new(web, web.select.pages_in_category(category))
+    web.remove_pages(pages_in_category.orphaned_pages)
+  end
+
   def revise_page(web_address, page_name, content, revised_at, author, renderer)
     page = read_page(web_address, page_name)
     page.revise(content, revised_at, author, renderer)

app/views/admin/edit_web.rhtml

@@ -118,24 +118,46 @@
           'accept-charset' => 'utf-8' }) do
 %>
   <p  style="text-align:right;font-size:.85em;">
-      Clean up by entering system password
+      Clean up this Web by entering the system password
       <input type="password" id="system_password_orphaned" class="disableAutoComplete" name="system_password_orphaned" />
       and
       <input type="submit" value="Delete Orphan Pages" />
   </p>
 <% end %>
 
+<% categories = WikiReference.list_categories(@web).sort
+  if categories.length > 0 %>
+<% form_tag({:controller => 'admin', :web => @web.address, :action => 'remove_orphaned_pages_in_category'},
+        { :id => 'remove_orphaned_pages_in_category', 
+          :onsubmit => "return checkSystemPassword(document.getElementById('system_password_orphaned_in_category').value)",
+          'accept-charset' => 'utf-8' }) do
+%>
+  <p  style="text-align:right;font-size:.85em;">
+      Clean up selected category:
+      <select id="category" name="category">
+        <%= html_options(categories) %>
+      </select>
+      Enter system password 
+      <input type="password" id="system_password_orphaned_in_category" class="disableAutoComplete" name="system_password_orphaned_in_category" />
+      and
+      <input type="submit" value="Delete Orphan Pages in Category" />
+  </p>
+<% end %>
+<% end %>
+
+<div class="inputBox">
 <% form_tag({:controller => 'admin', :web => @web.address, :action => 'delete_web'},
         { :id => 'delete_web', 
           :onsubmit => "return checkSystemPassword(document.getElementById('system_password_delete_web').value)",
           'accept-charset' => 'utf-8' }) do
 %>
-  <p  style="text-align:right;font-size:.85em;">
-      Delete this Web, and all its pages.
+  <p  style="text-align:right;">
+      Delete this Web, and all its pages. Enter system password 
       <input type="password" id="system_password_delete_web" class="disableAutoComplete" name="system_password_delete_web" />
       and
       <input type="submit" value="Delete Web" />
   </p>
 <% end %>
+</div>
 
 <%= javascript_include_tag 'edit_web' %>

config/routes.rb

@@ -16,6 +16,7 @@ ActionController::Routing::Routes.draw do |map|
 
   connect_to_web map, ':web/edit_web', :controller => 'admin', :action => 'edit_web'
   connect_to_web map, ':web/remove_orphaned_pages', :controller => 'admin', :action => 'remove_orphaned_pages'
+  connect_to_web map, ':web/remove_orphaned_pages_in_category', :controller => 'admin', :action => 'remove_orphaned_pages_in_category'
   connect_to_web map, ':web/files/:id', :controller => 'file', :action => 'file', :requirements => {:id => /[-._\w]+/}, :id => nil
   connect_to_web map, ':web/import/:id', :controller => 'file', :action => 'import'
   connect_to_web map, ':web/login', :controller => 'wiki', :action => 'login'