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README

Rails Footnotes
License: MIT
Version: 3.6.4

You can also read this README in pretty html at the GitHub project Wiki page

  http://wiki.github.com/josevalim/rails-footnotes


Description
-----------

If you are developing in Rails you should know the plugin! It displays
footnotes in your application for easy debugging, such as sessions,
request parameters, cookies, filter chain, routes, queries, etc.

Even more, it contains links to open files directly in your editor including
your backtrace lines.


Installation
------------

Install Rails Footnotes is very easy. If you are running on Rails 2.3 just run
the following:

   sudo gem install rails-footnotes

In RAILS_ROOT/config/environments/development.rb (yes, you want it only in development):

  config.gem "rails-footnotes"

If you want it as plugin, just do:

   script/plugin install git://github.com/josevalim/rails-footnotes.git

Configuration
-------------

If you are not using Textmate as text editor, in your environment.rb or
in an initializer do:

  if defined?(Footnotes)
    Footnotes::Filter.prefix = 'txmt://open?url=file://%s&line=%d&column=%d'
  end

Where you are going to choose a prefix compatible with your text editor. The %s is
replaced by the name of the file, the first %d is replaced by the line number and
the second %d is replaced by the column.

By default, footnotes are appended at the end of the page with default stylesheet. If you want
to change their position, you can define a div with id "footnotes_holder" or define your own stylesheet
by turning footnotes stylesheet off:

  Footnotes::Filter.no_style = true

Another option is to allow multiple notes to be opened at the same time:

  Footnotes::Filter.multiple_notes = true

Finally, you can control which notes you want to show. The default are:

  Footnotes::Filter.notes = [:session, :cookies, :params, :filters, :routes, :env, :queries, :log, :general]

The queries note by default will not load if it detects New Relic loaded in the app. If you want to load it
in this case, add the following to an initializer:

Footnotes::Notes::QueriesNote.include_when_new_relic_installed = true if defined?(Footnotes)

Creating your own notes
-----------------------

Create your notes to integrate with Footnotes is easy.

1. Create a Footnotes::Notes::YourExampleNote class

2. Implement the necessary methods (check abstract_note.rb file in lib/notes)

3. Append your example note in Footnotes::Filter.notes array (usually at the end of your environment file or in an initializer):

For example, to create a note that shows info about the user logged in your application you just have to do:

  module Footnotes
    module Notes
      class CurrentUserNote < AbstractNote
        # This method always receives a controller
        #
        def initialize(controller)
          @current_user = controller.instance_variable_get("@current_user")
        end

        # The name that will appear as legend in fieldsets
        #
        def legend
          "Current user: #{@current_user.name}"
        end

        # This Note is only valid if we actually found an user
        # If it's not valid, it won't be displayed
        #
        def valid?
          @current_user
        end

        # The fieldset content
        #
        def content
          escape(@current_user.inspect)
        end
      end
    end
  end

Then put in your environment:

  Footnotes::Filter.notes += [:current_user]


Colaborators
------------

* Leon Li       - http://github.com/scorpio
* Keenan Brock  - http://github.com/kbrock
* Ivan Storck   - http://github.com/ivanoats
* Kris Chamber  - http://github.com/kristopher


Bugs and Feedback
-----------------

If you discover any bugs, please send an e-mail to jose@plataformatec.com.br
If you just want to give some positive feedback or drop a line, that's fine too!

Copyright (c) 2009 José Valim (jose@plataformatec.com.br)
http://blog.plataformatec.com.br/


Version 2.0
-----------

This plugin was created and maintained until version 2.0 by Duane Johnson:

Copyright (c) 2006 InquiryLabs, Inc.
http://blog.inquirylabs.com/
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