BeTaggable is a lean mean little tagging machine.
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BeTaggable is a lean mean little tagging machine.

* Weights in at 67 lines, this plugin is 1/10th the size of acts_as_taggable gem (2.0.2).
* Tag any models you want, no need to create additional join table.
* Built in tags_cache column to reduce DB traffic.
* Simple installation, run 3 commands and you're ready to tag and roll.

=== Install
1. install the plugin
    script/plugin install
2. generate, append your model class names to be tagged.
    script/generate be_taggable_tables Article Bookmark ...
3. rake db:migrate
that's it, now let's tag and roll.

  Class TestBook
    be_taggable  # Mark your class be_taggable. 
  book = TestBook.create(:name => "AWDWR")
  book.tag("programming, rails")       # 2 tags added
  book.tag("agile,       rails")       # "programming" removed, 
                                         "agile"       added, 
                                         "rails"       untouched.
  hash = TestBook.tags_count     # {"rails" => 1, "agile" => 1}
  book.tag("")                         # remove all tags.
  TestBook.find_tagged_with("rails")  # return list of matching book objects.
  TestBook.find_tagged_with("rails", :offset => 20, :limit => 10)  # search with options.
===Usage in template
To display model's tags from tags_cache column.
      <% for tag in YAML::load(article.tags_cache) %>
        <%= link_to(tag, tagged_articles_path(tag))  # assume route exists %> 
      <% end -%>
To show tag cloud
    <% Article.tags_count.sort.each{|pair| %>
        <td><%= link_to(pair[0], tagged_articles_path(pair[0])) %></td>
        <td><%= pair[1] # count %></td>
    <% } %>
If you like fish eye styled tag clound, feel free to copy off from acts_as_taggable gem.

===BeTaggable Internal
BeTaggable stays small by fully exploit the power and versatility of 
ActiveRecord. It only uses 2 models, +Tag+ and association model +Tagship+.
Tagship is polymorphic and can be associated with any models. 

Tags are distinguished by both tag name and model type. For example, if you 
have 3 books and 2 DVDs tagged "rails", then there'll be 2 rows in "tags" 
table, and 5 rows in "tagships" table.
  id  name    model_type   tagships_count
   1  rails   Book              3
   2  rails   Dvd               2
===Q & A
Help about this plugin is available on