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rails-ckeditor

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h1. Rails CKEditor integration plugin with SWFUpload support

CKEditor is a text editor to be used inside web pages. It's a WYSIWYG editor, which means that the text being edited on it looks as similar as possible to 
the results users have when publishing it. It brings to the web common editing features found on desktop editing applications like Microsoft Word and OpenOffice.

Because CKEditor is licensed under flexible Open Source and commercial licenses, you'll be able to integrate and use it inside any kind of application. 
This is the ideal editor for developers, created to provide easy and powerful solutions to their users.

CKEditor version: 3.2
SWFUpload version: 2.2.0
Rails version: 2.3.x

"ckeditor.com":http://ckeditor.com/
"swfupload.org":http://swfupload.org/

Demo appication:
"rails-ckeditor-demo-app":http://github.com/galetahub/rails-ckeditor-demo-app

h2. Install

@./script/plugin install git://github.com/galetahub/rails-ckeditor.git@

@rake ckeditor:install@

@rake ckeditor:config@

Last rake generated file config/ckeditor.yml:

development: 
  swf_file_post_name: "data"
  swf_image_file_types_description: "Images"
  swf_image_file_types: "*.jpg;*.jpeg;*.png;*.gif"
  swf_image_file_size_limit: "5 MB"
  swf_image_file_upload_limit: 10
  swf_types_description: "Files"
  swf_file_types: "*.doc;*.wpd;*.pdf;*.swf;*.xls"
  swf_file_size_limit: "10 MB"
  swf_file_file_upload_limit: 5
  public_uri: "/uploads"
  public_path: "public/uploads"
  file_manager_uri: "/ckeditor/files"
  file_manager_upload_uri: "/ckeditor/create?kind=file"
  file_manager_image_upload_uri: "/ckeditor/create?kind=image"
  file_manager_image_uri: "/ckeditor/images"


For attachment_fu: @swf_file_post_name: "uploaded_data"@

h2. Usage

Basically include this in the page you wish to use the editor in

  <%= javascript_include_tag :ckeditor %>


Then instead of the normal textarea helper from Rails use this one

  <%= ckeditor_textarea("object", "field", :width => '100%', :height => '200px') %>


FormBuilder helper for more usefully 

  
  <% form_for :page, :url => pages_path do |form| -%>
    ...
    <%= form.cktext_area :notes, :toolbar=>'Full', :width=>'400px', :heigth=>'200px' %>
    ...
    <%= form.cktext_area :content, :swf_params=>{:assetable_type=>'User', :assetable_id=>current_user.id} %>
    ...
  <% end -%>

  
h3. Support options
 
  :cols    # Textarea cols
  :rows    # Textarea rows
  :width   # Editor width
  :height  # Editor height
  :class   # Textarea css class name
  :toolbar # Toolbar name
  :skin    # Editor skin
  :language # Editor language
  :swf_params # SWFUpload additional params


Check @public/javascripts/ckeditor/config.js@ for config default options.
Modify @public/javascripts/ckeditor/contents.css@ - this stylesheet use editor

h3. AJAX

To use a remote form you need to do something like this

  <%= form_remote_tag :url => @options.merge(:controller => @scaffold_controller),
                    :before => Ckeditor_before_js('note', 'text') %>

    <%= ckeditor_textarea( "note", "text", :ajax => true ) %>

  <%= end_form_tag %>


If you forget to put in the :before it won't work, you can also use the Ckeditor_form_remote_tag described below

h3. Multiple Editors in a form

To create a form using multiple editors use the Ckeditor_form_remote_tag helper and pass the :editors option. This takes an hash of model symbol keys with each having
an array as its value. The array should contain the list of fields that will have editors attached to them.

  <%= ckeditor_form_remote_tag :url => @options.merge(:controller => @scaffold_controller),
                              :editors => { :multinote => ['text1', 'text2'] } %>

    <%= ckeditor_textarea( "multinote", "text1", :ajax => true ) %>
    <%= ckeditor_textarea( "multinote", "text2", :ajax => true ) %>

  <%= end_form_tag %>


h3. File uploads

We recommend using a paperclip plugin for file storage and processing images. Controller @../rails-ckeditor/app/controllers/ckeditor_controller.rb@ has actions 
for displaying and uploading files. It uses classes Picture and AttachmentFile, who are descendants of the Asset class. So, your project must have these classes.

"http://github.com/thoughtbot/paperclip":http://github.com/thoughtbot/paperclip

For S3 storage look at @../rails-ckeditor/examples/s3@

For paperclip:
ActiveRecord model Asset (asset.rb):

class Asset < ActiveRecord::Base
  belongs_to :user
  belongs_to :assetable, :polymorphic => true

  def url(*args)
    data.url(*args)
  end
  alias :public_filename :url

  def filename
    data_file_name
  end
  
  def content_type
    data_content_type
  end
  
  def size
    data_file_size
  end
  
  def path
    data.path
  end
  
  def styles
    data.styles
  end
  
  def format_created_at
    I18n.l(self.created_at, :format=>"%d.%m.%Y %H:%M")
  end
  
  def to_xml(options = {})
    xml = options[:builder] ||= Builder::XmlMarkup.new(:indent => options[:indent])

    xml.tag!(self.type.to_s.downcase) do
      xml.filename{ xml.cdata!(self.filename) }
      xml.size self.size
      xml.path{ xml.cdata!(self.url) }
      
      xml.styles do
        self.styles.each do |style|
          xml.tag!(style.first, self.url(style.first))
        end
      end unless self.styles.empty?
    end
  end
end


ActiveRecord model AttachmentFile (attachment_file.rb):

class AttachmentFile < Asset
  has_attached_file :data,
                    :url => "/assets/attachments/:id/:filename",
                    :path => ":rails_root/public/assets/attachments/:id/:filename"

  validates_attachment_size :data, :less_than => 10.megabytes
end


ActiveRecord model Picture (picture.rb):

class Picture < Asset
  has_attached_file :data,
                    :url  => "/assets/pictures/:id/:style_:basename.:extension",
                    :path => ":rails_root/public/assets/pictures/:id/:style_:basename.:extension",
	            :styles => { :content => '575>', :thumb => '100x100' }
	
  validates_attachment_size :data, :less_than => 2.megabytes
  
  def url_content
    url(:content)
  end
  
  def url_thumb
    url(:thumb)
  end
  
  def to_json(options = {})
    options[:methods] ||= []
    options[:methods] << :url_content
    options[:methods] << :url_thumb
    super options
  end
end


More info in @../rails-ckeditor/examples/models@. 
Do not forget about migration @../rails-ckeditor/examples/migrations@.

h2. TODOs

1. Add support for choose filemanager storage
2. More integration upload system

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