information on creating indexes and hooking into mongoid rake tasks

README.md

@@ -1,10 +1,12 @@
 NAME
 ----
   mongoid-sequence
+  mongoid-grid_fs
 
 INSTALL
 -------
   gem install mongoid-sequence
+  gem install mongoid-grid_fs
 
 SYNOPSIS
 --------
@@ -33,3 +35,8 @@ DESCRIPTION
 -----------
 mongoid_sequence is a pure mongoid sequence generator based on mongodb's
 increment operator
+
+GRIDFS
+------
+Be sure to create indexes for the GridFS collections with `rake db:mongoid:create_indexes`.
+

lib/mongoid-grid_fs.rb

@@ -51,6 +51,10 @@
 
       require "digest/md5"
       require "cgi"
+
+      if defined?(::Rails::Railtie)
+        require 'mongoid-grid_fs/railtie'
+      end
     end
   end
 
@@ -134,9 +138,6 @@
         namespace.send(:const_set, :File, file_model)
         namespace.send(:const_set, :Chunk, chunk_model)
 
-        #at_exit{ file_model.create_indexes rescue nil }
-        #at_exit{ chunk_model.create_indexes rescue nil }
-
         const_get(const)
       end
 

lib/mongoid-grid_fs/railtie.rb

@@ -0,0 +1,18 @@
+module Mongoid
+  class GridFS
+    class Railtie < ::Rails::Railtie
+      rake_tasks do
+        task 'db:mongoid:create_indexes' do
+          ::Mongoid::GridFS::Fs::File.create_indexes
+          ::Mongoid::GridFS::Fs::Chunk.create_indexes
+        end
+
+        task 'db:mongoid:remove_indexes' do
+          ::Mongoid::GridFS::Fs::File.remove_indexes
+          ::Mongoid::GridFS::Fs::Chunk.remove_indexes
+        end
+      end
+    end
+  end
+end
+