TextFormatter plugin allows you filter user input, use the syntax gem, before it is saved to the database.

Install the plugin:

ruby script\plugin install http://svn.railslodge.com/svn/plugins/text_formatter/

Install the following gems:

gem install htmltokenizer
gem install syntax
gem install hpricot

If you are using the syntax highlighting method, copy the css from /vender/plugins/text_formatter/stylesheets/text_formatter.css into your css file.

The following methods can be used in your models:

===Remove HTML Tags
Remove all html tags from the given fields

tf_remove_html_tags :fieldname
#e.g. tf_remove_html_tags :title, :post

===Escape HTML Characters
Escape all tags and special characters

tf_escape_html_characters :fieldname
#e.g. tf_escape_all_html_characters :title, :post

===Escape Only Text Characters
Escape all text except html tags

tf_escape_text_characters :fieldname
#e.g. tf_escape_text_characters :title, :post

===Syntax Highlighting
Add syntax highlighting to all text within pre tags

tf_syntax_highlighting :fieldname
#e.g. tf_syntax_highlighting :title, :post

===Simple Text Markup
Apply SimpleTextMarkup

tf_simple_text_markup :fieldname
#e.g. tf_simple_text_markup :title, :post

===Content Formatter
Remove all html tags, SimpleTextMarkup, encode tags within html tags, syntax highlighting

tf_content_formatter :fieldname
#e.g. tf_content_formatter :title, :post

===Basic Formatter
Remove all html tags, SimpleTextMarkup, encode tags within html tags

tf_basic_formatter :fieldname
#e.g. tf_basic_formatter :title, :post