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kjvarga / sitemap_generator

SitemapGenerator is a framework-agnostic XML Sitemap generator written in Ruby with automatic Rails integration. It supports Video, News, Image, Mobile, PageMap and Alternate Links sitemap extensions and includes Rake tasks for managing your sitemaps, as well as many other great features.
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sitemaps

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SitemapGenerator

CI

SitemapGenerator is the easiest way to generate Sitemaps in Ruby. Rails integration provides access to the Rails route helpers within your sitemap config file and automatically makes the rake tasks available to you. Or if you prefer to use another framework, you can! You can use the rake tasks provided or run your sitemap configs as plain ruby scripts.

Sitemaps adhere to the Sitemap 0.9 protocol specification.

Features

Show Me

This is a simple standalone example. For Rails installation see the Rails instructions in the Install section.

Install:

gem install sitemap_generator

Create sitemap.rb:

require 'rubygems'
require 'sitemap_generator'

SitemapGenerator::Sitemap.default_host = 'http://example.com'
SitemapGenerator::Sitemap.create do
  add '/home', :changefreq => 'daily', :priority => 0.9
  add '/contact_us', :changefreq => 'weekly'
end
SitemapGenerator::Sitemap.ping_search_engines # Not needed if you use the rake tasks

Run it:

ruby sitemap.rb

Output:

In /Users/karl/projects/sitemap_generator-test/public/
+ sitemap.xml.gz                                           3 links /  364 Bytes
Sitemap stats: 3 links / 1 sitemaps / 0m00s

Successful ping of Google

Contents

Contribute

Does your website use SitemapGenerator to generate Sitemaps? Where would you be without Sitemaps? Probably still knocking rocks together. Consider donating to the project to keep it up-to-date and open source.

Click here to lend your support to: SitemapGenerator and make a donation at www.pledgie.com !

Foreword

Adam Salter first created SitemapGenerator while we were working together in Sydney, Australia. Unfortunately, he passed away in 2009. Since then I have taken over development of SitemapGenerator.

Those who knew him know what an amazing guy he was, and what an excellent Rails programmer he was. His passing is a great loss to the Rails community.

The canonical repository is: http://github.com/kjvarga/sitemap_generator

Installation

Ruby

gem install 'sitemap_generator'

To use the rake tasks add the following to your Rakefile:

require 'sitemap_generator/tasks'

The Rake tasks expect your sitemap to be at config/sitemap.rb but if you need to change that call like so: rake sitemap:refresh CONFIG_FILE="path/to/sitemap.rb"

Rails

SitemapGenerator works with all versions of Rails and has been tested in Rails 2, 3 and 4.

Add the gem to your Gemfile:

gem 'sitemap_generator'

Alternatively, if you are not using a Gemfile add the gem to your config/application.rb file config block:

config.gem 'sitemap_generator'

Note: SitemapGenerator automatically loads its Rake tasks when used with Rails. You do not need to require the sitemap_generator/tasks file.

Getting Started

Preventing Output

To disable all non-essential output you can pass the -s option to Rake, for example rake -s sitemap:refresh, or set the environment variable VERBOSE=false when calling as a Ruby script.

To disable output in-code use the following:

SitemapGenerator.verbose = false

Rake Tasks

Pinging Search Engines

Using rake sitemap:refresh will notify Google to let them know that a new sitemap is available. To generate new sitemaps without notifying search engines, use rake sitemap:refresh:no_ping.

If you want to customize the hash of search engines you can access it at:

SitemapGenerator::Sitemap.search_engines

Usually you would be adding a new search engine to ping. In this case you can modify the search_engines hash directly. This ensures that when SitemapGenerator::Sitemap.ping_search_engines is called, your new search engine will be included.

If you are calling ping_search_engines manually, then you can pass your new search engine directly in the call, as in the following example:

SitemapGenerator::Sitemap.ping_search_engines(newengine: 'http://newengine.com/ping?url=%s')

The key gives the name of the search engine, as a string or symbol, and the value is the full URL to ping, with a string interpolation that will be replaced by the CGI escaped sitemap index URL. If you have any literal percent characters in your URL you need to escape them with %%.

If you are calling SitemapGenerator::Sitemap.ping_search_engines from outside of your sitemap config file, then you will need to set SitemapGenerator::Sitemap.default_host and any other options that you set in your sitemap config which affect the location of the sitemap index file. For example:

SitemapGenerator::Sitemap.default_host = 'http://example.com'
SitemapGenerator::Sitemap.ping_search_engines

Alternatively, you can pass in the full URL to your sitemap index, in which case we would have just the following:

SitemapGenerator::Sitemap.ping_search_engines('http://example.com/sitemap.xml.gz')

Crontab

To keep your sitemaps up-to-date, setup a cron job. Make sure to pass the -s option to silence rake. That way you will only get email if the sitemap build fails.

If you're using Whenever, your schedule would look something like this:

# config/schedule.rb
every 1.day, :at => '5:00 am' do
  rake "-s sitemap:refresh"
end

Robots.txt

You should add the URL of the sitemap index file to public/robots.txt to help search engines find your sitemaps. The URL should be the complete URL to the sitemap index. For example:

Sitemap: http://www.example.com/sitemap.xml.gz

Ruby Modules

If you need to include a module (e.g. a rails helper), you must include it in the sitemap interpreter class. The part of your sitemap configuration that defines your sitemaps is run within an instance of the SitemapGenerator::Interpreter:

SitemapGenerator::Interpreter.send :include, RoutingHelper

Deployments & Capistrano

To include the capistrano tasks just add the following to your Capfile:

require 'capistrano/sitemap_generator'

Configurable options:

set :sitemap_roles, :web # default

Available capistrano tasks:

sitemap:create   #Create sitemaps without pinging search engines
sitemap:refresh  #Create sitemaps and ping search engines
sitemap:clean    #Clean up sitemaps in the sitemap path

Generate sitemaps into a directory which is shared by all deployments.

You can set your sitemaps path to your shared directory using the sitemaps_path option. For example if we have a directory public/shared/ that is shared by all deployments we can have our sitemaps generated into that directory by setting:

SitemapGenerator::Sitemap.sitemaps_path = 'shared/'

Sitemaps with no Index File

The sitemap index file is created for you on-demand, meaning that if you have a large site with more than one sitemap file, you will have a sitemap index file to reference those sitemap files. If however you have a small site with only one sitemap file, you don't require an index and so no index will be created. In both cases the index and sitemap file's name, respectively, is sitemap.xml.gz.

You may want to always create an index, even if you only have a small site. Or you may never want to create an index. For these cases, you can use the create_index option to control index creation. You can read about this option in the Sitemap Options section below.

To always create an index:

SitemapGenerator::Sitemap.create_index = true

To never create an index:

SitemapGenerator::Sitemap.create_index = false

Your sitemaps will still be called sitemap.xml.gz, sitemap1.xml.gz, sitemap2.xml.gz, etc.

And the default "intelligent" behaviour:

SitemapGenerator::Sitemap.create_index = :auto

Upload Sitemaps to a Remote Host using Adapters

This section needs better documentation. Please consider contributing.

Sometimes it is desirable to host your sitemap files on a remote server, and point robots and search engines to the remote files. For example, if you are using a host like Heroku, which doesn't allow writing to the local filesystem. You still require some write access, because the sitemap files need to be written out before uploading. So generally a host will give you write access to a temporary directory. On Heroku this is tmp/ within your application directory.

Supported Adapters

SitemapGenerator::FileAdapter

Standard adapter, writes out to a file.

SitemapGenerator::FogAdapter

Uses Fog::Storage to upload to any service supported by Fog.

You must require 'fog' in your sitemap config before using this adapter, or require another library that defines Fog::Storage.

SitemapGenerator::S3Adapter

Uses Fog::Storage to upload to Amazon S3 storage.

You must require 'fog-aws' in your sitemap config before using this adapter.

An example of using this adapter in your sitemap configuration:

  SitemapGenerator::Sitemap.adapter = SitemapGenerator::S3Adapter.new(options)

Where options is a Hash with any of the following keys:

Alternatively you can use an environment variable to configure each option (except fog_storage_options). The environment variables have the same name but capitalized, e.g. FOG_PATH_STYLE.

SitemapGenerator::AwsSdkAdapter

Uses Aws::S3::Resource to upload to Amazon S3 storage. Includes automatic detection of your AWS credentials and region.

You must require 'aws-sdk-s3' in your sitemap config before using this adapter, or require another library that defines Aws::S3::Resource and Aws::Credentials.

An example of using this adapter in your sitemap configuration:

  SitemapGenerator::Sitemap.adapter = SitemapGenerator::AwsSdkAdapter.new('s3_bucket',
    acl: 'public-read', # Optional. This is the default.
    cache_control: 'private, max-age=0, no-cache', # Optional. This is the default.
    access_key_id: 'AKIAI3SW5CRAZBL4WSTA',
    secret_access_key: 'asdfadsfdsafsadf',
    region: 'us-east-1',
    endpoint: 'https://sfo2.digitaloceanspaces.com'
  )

Where the first argument is the S3 bucket name, and the rest are keyword argument options. Options :acl and :cache_control configure access and caching of the uploaded files; all other options are passed directly to the AWS client.

See the SitemapGenerator::AwsSdkAdapter docs, and https://docs.aws.amazon.com/sdk-for-ruby/v2/api/Aws/S3/Client.html#initialize-instance_method for the full list of supported options.

SitemapGenerator::WaveAdapter

Uses CarrierWave::Uploader::Base to upload to any service supported by CarrierWave, for example, Amazon S3, Rackspace Cloud Files, and MongoDB's GridF.

You must require 'carrierwave' in your sitemap config before using this adapter, or require another library that defines CarrierWave::Uploader::Base.

Some documentation exists on the wiki page.

SitemapGenerator::GoogleStorageAdapter

Uses Google::Cloud::Storage to upload to Google Cloud storage.

You must require 'google/cloud/storage' in your sitemap config before using this adapter.

An example of using this adapter in your sitemap configuration with options:

  SitemapGenerator::Sitemap.adapter = SitemapGenerator::GoogleStorageAdapter.new(
    acl: 'public', # Optional.  This is the default value.
    bucket: 'name_of_bucket'
    credentials: 'path/to/keyfile.json',
    project_id: 'google_account_project_id',
  )

Also, inline with Google Authentication options, it can also pick credentials from environment variables. All supported environment variables can be used, for example: GOOGLE_CLOUD_PROJECT and GOOGLE_CLOUD_CREDENTIALS. An example of using this adapter with the environment variables is:

  SitemapGenerator::Sitemap.adapter = SitemapGenerator::GoogleStorageAdapter.new(
    bucket: 'name_of_bucket'
  )

All options other than the :bucket and :acl options are passed to the Google::Cloud::Storage.new initializer giving you maximum configurability. See the Google Cloud Storage initializer for supported options.

An Example of Using an Adapter

  1. Please see this wiki page for more information about setting up SitemapGenerator to upload to a remote host.

  2. This example uses the CarrierWave adapter. It shows some common settings that are used when the hostname hosting the sitemaps differs from the hostname of the sitemap links.

     # Your website's host name
 SitemapGenerator::Sitemap.default_host = "http://www.example.com"

 # The remote host where your sitemaps will be hosted
 SitemapGenerator::Sitemap.sitemaps_host = "http://s3.amazonaws.com/sitemap-generator/"

 # The directory to write sitemaps to locally
 SitemapGenerator::Sitemap.public_path = 'tmp/'

 # Set this to a directory/path if you don't want to upload to the root of your `sitemaps_host`
 SitemapGenerator::Sitemap.sitemaps_path = 'sitemaps/'

 # The adapter to perform the upload of sitemap files.
 SitemapGenerator::Sitemap.adapter = SitemapGenerator::WaveAdapter.new

  3. Update your robots.txt file to point robots to the remote sitemap index file, e.g:

    Sitemap: http://s3.amazonaws.com/sitemap-generator/sitemaps/sitemap.xml.gz

    You generate your sitemaps as usual using rake sitemap:refresh.

    Note that SitemapGenerator will automatically turn off include_index in this case because the sitemaps_host does not match the default_host. The link to the sitemap index file that would otherwise be included would point to a different host than the rest of the links in the sitemap, something that the sitemap rules forbid.

  4. Verify to Google that you own the S3 url

    In order for Google to use your sitemap, you need to prove you own the S3 bucket through google webmaster tools. In the example above, you would add the site http://s3.amazonaws.com/sitemap-generator/sitemaps. Once you have verified you own the directory, then add your sitemap index to the list of sitemaps for the site.

Generating Multiple Sitemaps

Each call to create creates a new sitemap index and associated sitemaps. You can call create as many times as you want within your sitemap configuration.

You must remember to use a different filename or location for each set of sitemaps, otherwise they will overwrite each other. You can use the filename, namer and sitemaps_path options for this.

In the following example we generate three sitemaps each in its own subdirectory:

%w(google bing apple).each do |subdomain|
  SitemapGenerator::Sitemap.default_host = "https://#{subdomain}.mysite.com"
  SitemapGenerator::Sitemap.sitemaps_path = "sitemaps/#{subdomain}"
  SitemapGenerator::Sitemap.create do
    add '/home'
  end
end

Outputs:

+ sitemaps/google/sitemap1.xml.gz             2 links /  822 Bytes /  328 Bytes gzipped
+ sitemaps/google/sitemap.xml.gz           1 sitemaps /  389 Bytes /  217 Bytes gzipped
Sitemap stats: 2 links / 1 sitemaps / 0m00s
+ sitemaps/bing/sitemap1.xml.gz               2 links /  820 Bytes /  330 Bytes gzipped
+ sitemaps/bing/sitemap.xml.gz             1 sitemaps /  388 Bytes /  217 Bytes gzipped
Sitemap stats: 2 links / 1 sitemaps / 0m00s
+ sitemaps/apple/sitemap1.xml.gz              2 links /  820 Bytes /  330 Bytes gzipped
+ sitemaps/apple/sitemap.xml.gz            1 sitemaps /  388 Bytes /  214 Bytes gzipped
Sitemap stats: 2 links / 1 sitemaps / 0m00s

If you don't want to have to generate all the sitemaps at once, or you want to refresh some more often than others, you can split them up into their own configuration files. Using the above example we would have:

# config/google_sitemap.rb
SitemapGenerator::Sitemap.default_host = "https://google.mysite.com"
SitemapGenerator::Sitemap.sitemaps_path = "sitemaps/google"
SitemapGenerator::Sitemap.create do
  add '/home'
end

# config/apple_sitemap.rb
SitemapGenerator::Sitemap.default_host = "https://apple.mysite.com"
SitemapGenerator::Sitemap.sitemaps_path = "sitemaps/apple"
SitemapGenerator::Sitemap.create do
  add '/home'
end

# config/bing_sitemap.rb
SitemapGenerator::Sitemap.default_host = "https://bing.mysite.com"
SitemapGenerator::Sitemap.sitemaps_path = "sitemaps/bing"
SitemapGenerator::Sitemap.create do
  add '/home'
end

To generate each one specify the configuration file to run by passing the CONFIG_FILE option to rake sitemap:refresh, e.g.:

rake sitemap:refresh CONFIG_FILE="config/google_sitemap.rb"
rake sitemap:refresh CONFIG_FILE="config/apple_sitemap.rb"
rake sitemap:refresh CONFIG_FILE="config/bing_sitemap.rb"

Sitemap Configuration

A sitemap configuration file contains all the information needed to generate your sitemaps. By default SitemapGenerator looks for a configuration file in config/sitemap.rb - relative to your application root or the current working directory. (Run rake sitemap:install to have this file generated for you if you have not done so already.)

If you want to use a non-standard configuration file, or have multiple configuration files, you can specify which one to run by passing the CONFIG_FILE option like so:

rake sitemap:refresh CONFIG_FILE="config/geo_sitemap.rb"

A Simple Example

So what does a sitemap configuration look like? Let's take a look at a simple example:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add '/welcome'
end

A few things to note:

Now let's see what is output when we run this configuration with rake sitemap:refresh:no_ping:

In /Users/karl/projects/sitemap_generator-test/public/
+ sitemap.xml.gz                                           2 links /  347 Bytes
Sitemap stats: 2 links / 1 sitemaps / 0m00s

Weird! The sitemap has two links, even though we only added one! This is because SitemapGenerator adds the root URL / for you by default. You can change the default behaviour by setting the include_root or include_index option.

Now let's take a look at the file that was created. After uncompressing and XML-tidying the contents we have:

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">
  <url>
    <loc>http://www.example.com/</loc>
    <lastmod>2011-05-21T00:03:38+00:00</lastmod>
    <changefreq>weekly</changefreq>
    <priority>1.0</priority>
  </url>
  <url>
    <loc>http://www.example.com/welcome</loc>
    <lastmod>2011-05-21T00:03:38+00:00</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.5</priority>
  </url>
</urlset>

The sitemaps conform to the Sitemap 0.9 protocol. Notice the value for priority and changefreq on the root link, the one that was added for us? The values tell us that this link is the highest priority and should be checked regularly because it are constantly changing. You can specify your own values for these options in your call to add.

In this example no sitemap index was created because we have so few links, so none was needed. If we run the same example above and set create_index = true we can take a look at what an index file looks like:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create_index = true
SitemapGenerator::Sitemap.create do
  add '/welcome'
end

And the output:

In /Users/karl/projects/sitemap_generator-test/public/
+ sitemap1.xml.gz                                          2 links /  347 Bytes
+ sitemap.xml.gz                                        1 sitemaps /  228 Bytes
Sitemap stats: 2 links / 1 sitemaps / 0m00s

Now if we look at the uncompressed and formatted contents of sitemap.xml.gz we can see that it is a sitemap index and sitemap1.xml.gz is a sitemap:

<?xml version="1.0" encoding="UTF-8"?>
<sitemapindex xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/siteindex.xsd">
  <sitemap>
    <loc>http://www.example.com/sitemap1.xml.gz</loc>
    <lastmod>2013-05-01T18:10:26-07:00</lastmod>
  </sitemap>
</sitemapindex>

Adding Links

You call add in the block passed to create to add a path to your sitemap. add takes a string path and optional hash of options, generates the URL and adds it to the sitemap. You only need to pass a path because the URL will be built for us using the default_host we specified. However, if we want to use a different host for a particular link, we can pass the :host option to add.

Let's see another example:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add '/contact_us'
  Content.find_each do |content|
    add content_path(content), :lastmod => content.updated_at
  end
end

In this example first we add the /contact_us page to the sitemap and then we iterate through the Content model's records adding each one to the sitemap using the content_path helper method to generate the path for each record.

The Rails URL/path helper methods are automatically made available to us in the create block. This keeps the logic for building our paths out of the sitemap config and in the Rails application where it should be. You use those methods just like you would in your application's view files.

In the example about we pass a lastmod (last modified) option with the value of the record's updated_at attribute so that search engines know to only re-index the page when the record changes.

Looking at the output from running this sitemap, we see that we have a few more links than before:

+ sitemap.xml.gz                   12 links /     2.3 KB /  365 Bytes gzipped
Sitemap stats: 12 links / 1 sitemaps / 0m00s

From this example we can see that:

You can read more about add in the XML Specification.

Supported Options to add

For other options be sure to check out the Sitemap Extensions section below.

add '/contact_us', :changefreq => 'monthly'
add content_path(content), :lastmod => content.updated_at
add '/login', :host => 'https://securehost.com'
add '/about', :priority => 0.75
add '/about', :expires => Time.now + 2.weeks

Adding Links to the Sitemap Index

Sometimes you may need to manually add some links to the sitemap index file. For example if you are generating your sitemaps incrementally you may want to create a sitemap index which includes the files which have already been generated. To achieve this you can use the add_to_index method which works exactly the same as the add method described above.

It supports the same options as add, namely:

add_to_index '/mysitemap1.xml.gz', :host => 'http://sitemaphostingserver.com'

An example:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add_to_index '/mysitemap1.xml.gz'
  add_to_index '/mysitemap2.xml.gz'
  # ...
end

When you add links in this way, an index is always created, unless you've explicitly set create_index to false.

Accessing the LinkSet instance

Sometimes you need to mess with the internals to do custom stuff. If you need access to the LinkSet instance from within create() you can use the sitemap method to do so.

In this example, say we have already pre-generated three sitemap files: sitemap1.xml.gz, sitemap2.xml.gz, sitemap3.xml.gz. Now we want to start the sitemap generation at sitemap4.xml.gz and create a bunch of new sitemaps. There are a few ways we can do this, but this is an easy way:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.namer = SitemapGenerator::SimpleNamer.new(:sitemap, :start => 4)
SitemapGenerator::Sitemap.create do
  (1..3).each do |i|
    add_to_index "sitemap#{i}.xml.gz"
  end
  add '/home'
  add '/another'
end

The output looks something like this:

In /Users/karl/projects/sitemap_generator-test/public/
+ sitemap4.xml.gz                                          3 links /  355 Bytes
+ sitemap.xml.gz                                        4 sitemaps /  242 Bytes
Sitemap stats: 3 links / 4 sitemaps / 0m00s

Speeding Things Up

For large ActiveRecord collections with thousands of records it is advisable to iterate through them in batches to avoid loading all records into memory at once. For this reason in the example above we use Content.find_each which is a batched iterator available since Rails 2.3.2, rather than Content.all.

Customizing your Sitemaps

SitemapGenerator supports a number of options which allow you to control every aspect of your sitemap generation. How they are named, where they are stored, the contents of the links and the location that the sitemaps will be hosted from can all be set.

The options can be set in the following ways.

On SitemapGenerator::Sitemap:

SitemapGenerator::Sitemap.default_host = 'http://example.com'
SitemapGenerator::Sitemap.sitemaps_path = 'sitemaps/'

These options will apply to all sitemaps. This is how you set most options.

Passed as options in the call to create:

SitemapGenerator::Sitemap.create(
    :default_host => 'http://example.com',
    :sitemaps_path => 'sitemaps/') do
  add '/home'
end

This is useful if you are setting a lot of options.

Finally, passed as options in a call to group:

SitemapGenerator::Sitemap.create(:default_host => 'http://example.com') do
  group(:filename => :somegroup, :sitemaps_path => 'sitemaps/') do
    add '/home'
  end
end

The options passed to group only apply to the links and sitemaps generated in the group. Sitemap Groups are useful to group links into specific sitemaps, or to set options that you only want to apply to the links in that group.

Sitemap Options

The following options are supported.

Sitemap Groups

Sitemap Groups is a powerful feature that is also very simple to use.

A Groups Example

When you create a new group you pass options which will apply only to that group. You pass a block to group. Inside your block you call add to add links to the group.

Let's see an example that demonstrates a few interesting things about groups:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add '/rss'

  group(:sitemaps_path => 'en/', :filename => :english) do
    add '/home'
  end

  group(:sitemaps_path => 'fr/', :filename => :french) do
    add '/maison'
  end
end

And the output from running the above:

In /Users/karl/projects/sitemap_generator-test/public/
+ en/english.xml.gz                                        1 links /  328 Bytes
+ fr/french.xml.gz                                         1 links /  329 Bytes
+ sitemap1.xml.gz                                          2 links /  346 Bytes
+ sitemap.xml.gz                                        3 sitemaps /  252 Bytes
Sitemap stats: 4 links / 3 sitemaps / 0m00s

So we have two sitemaps with one link each and one sitemap with two links. The sitemaps from the groups are easy to spot by their filenames. They are english.xml.gz and french.xml.gz. They contain only one link each because include_index and include_root are set to false by default in a group.

On the other hand, the default sitemap which we added /rss to has two links. The root url was added to it when we added /rss. If we hadn't added that link sitemap1.xml.gz would not have been created. So when we are using groups, the default sitemap will only be created if we add links to it.

The sitemap index file is shared by all groups. You can change its filename by setting SitemapGenerator::Sitemap.filename or by passing the :filename option to create.

The options you use when creating your groups will determine which and how many sitemaps are created. Groups will inherit the default sitemap when possible, and will continue the normal series. However a group will often specify an option which requires the links in that group to be in their own files. In this case, if the default sitemap were being used it would be finalized before starting the next sitemap in the series.

If you have changed your sitemaps physical location in a group, then the default sitemap will not be used and it will be unaffected by the group. Group sitemaps are finalized as they get full and at the end of each group.

Using group without a block

In some circumstances you may need to conditionally add records to a group or perform some other more complicated logic. In these cases you can instantiate a group instance, add links to it and finalize it manually.

When called with a block, any partial sitemaps are automatically written out for you when the block terminates. Because this does not happen when instantiating manually, you must call finalize! on your group to ensure that it is written out and gets included in the sitemap index file. Note that group sitemaps will still automatically be finalized (written out) as they become full; calling finalize! is to handle the case when a sitemap is not full.

An example:

SitemapGenerator::Sitemap.verbose = true
SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  odds = group(:filename => :odds)
  evens = group(:filename => :evens)

  (1..20).each do |i|
    if (i % 2) == 0
      evens.add i.to_s
    else
      odds.add i.to_s
    end
  end

  odds.finalize!
  evens.finalize!
end

And the output from running the above:

In '/Users/kvarga/Projects/sitemap_generator-test/public/':
+ odds.xml.gz                                             10 links /  371 Bytes
+ evens.xml.gz                                            10 links /  371 Bytes
+ sitemap.xml.gz                                        2 sitemaps /  240 Bytes
Sitemap stats: 20 links / 2 sitemaps / 0m00s

Sitemap Extensions

News Sitemaps

A news item can be added to a sitemap URL by passing a :news hash to add. The hash must contain tags defined by the News Sitemap specification.

Example

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add('/index.html', :news => {
      :publication_name => "Example",
      :publication_language => "en",
      :title => "My Article",
      :keywords => "my article, articles about myself",
      :stock_tickers => "SAO:PETR3",
      :publication_date => "2011-08-22",
      :access => "Subscription",
      :genres => "PressRelease"
  })
end

Supported options

Image Sitemaps

Images can be added to a sitemap URL by passing an :images array to add. Each item in the array must be a Hash containing tags defined by the Image Sitemap specification.

Example

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add('/index.html', :images => [{
    :loc => 'http://www.example.com/image.png',
    :title => 'Image' }])
end

Supported options

Video Sitemaps

A video can be added to a sitemap URL by passing a :video Hash to add(). The Hash can contain tags defined by the Video Sitemap specification.

To add more than one video to a url, pass an array of video hashes using the :videos option.

Example

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add('/index.html', :video => {
    :thumbnail_loc => 'http://www.example.com/video1_thumbnail.png',
    :title => 'Title',
    :description => 'Description',
    :content_loc => 'http://www.example.com/cool_video.mpg',
    :tags => %w[one two three],
    :category => 'Category'
  })
end

Supported options

PageMap Sitemaps

Pagemaps can be added by passing a :pagemap hash to add. The hash must contain a :dataobjects key with an array of dataobject hashes. Each dataobject hash contains a :type and :id, and an optional array of :attributes. Each attribute hash can contain two keys: :name and :value, with string values. For more information consult the official documentation on PageMaps.

Supported options

Example:

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add('/blog/post', :pagemap => {
    :dataobjects => [{
      :type => 'document',
      :id   => 'hibachi',
      :attributes => [
        { :name => 'name',   :value => 'Dragon' },
        { :name => 'review', :value => '3.5' },
      ]
    }]
  })
end

Alternate Links

A useful feature for internationalization is to specify alternate links for a url.

Alternate links can be added by passing an :alternate Hash to add. You can pass more than one alternate link by passing an array of hashes using the :alternates option.

Check out the Google specification here.

Example

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add('/index.html', :alternate => {
    :href => 'http://www.example.de/index.html',
    :lang => 'de',
    :nofollow => true
  })
end

Supported options

Alternates Example

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
 add('/index.html', :alternates => [
        {
            :href => 'http://www.example.de/index.html',
            :lang => 'de',
            :nofollow => true
        },
        {
            :href => 'http://www.example.es/index.html',
            :lang => 'es',
            :nofollow => true
        }
    ])
end

Mobile Sitemaps

Mobile sitemaps include a specific <mobile:mobile/> tag.

Check out the Google specification here.

Example

SitemapGenerator::Sitemap.default_host = "http://www.example.com"
SitemapGenerator::Sitemap.create do
  add('/index.html', :mobile => true)
end

Supported options

Compatibility

Compatible with all versions of Rails and Ruby. Tested up to Ruby 3.1 and Rails 7.0. Ruby 1.9.3 support was dropped in Version 6.0.0.

Licence

Released under the MIT License. See the (MIT-LICENSE)[MIT-LICENSE] file.

MIT. See the LICENSE.md file.

Copyright (c) Karl Varga released under the MIT license