tagging. princely

app/models/album.rb

@@ -1,6 +1,15 @@
 class Album < ActiveRecord::Base
-  has_many :photos
+  has_many :photos, :dependent => :destroy
   
   validates_uniqueness_of :path, :message => "Album already exsists on disc"
+
+  before_destroy :destroy_directory
   
+  private
+  
+  def destroy_directory
+    #puts "DELETE DIRECTORY " + APP_CONFIG[:photos_path] + self.path
+    #Dir.delete( APP_CONFIG[:photos_path] + self.path + "/" ) if File.exists?( APP_CONFIG[:photos_path] + self.path )
+    #Dir.delete( APP_CONFIG[:thumbs_path] + self.path  ) if File.exists?( APP_CONFIG[:thumbs_path] + self.path )
+  end
 end

app/models/photo.rb

@@ -1,5 +1,18 @@
 class Photo < ActiveRecord::Base
   belongs_to :album
+  has_many :photo_tags, :dependent => :destroy
+  has_many :tags, :through => :photo_tags
   
   validates_uniqueness_of :path, :message => "Photo already exsists on disc"
+  
+  before_destroy :destroy_file
+  
+  private
+  
+  def destroy_file
+    puts "DELETE FILE " + APP_CONFIG[:photos_path] + self.path
+    File.delete( APP_CONFIG[:photos_path] + self.path  ) if File.exists?( APP_CONFIG[:photos_path] + self.path )
+    File.delete( APP_CONFIG[:thumbs_path] + self.album.path + "/" + self.id.to_s + "_small" + File.extname( APP_CONFIG[:photos_path] + self.path ) ) if File.exists?( APP_CONFIG[:thumbs_path] + self.album.path + "/" + self.id.to_s + "_small" + File.extname( APP_CONFIG[:photos_path] + self.path ) )
+    File.delete( APP_CONFIG[:thumbs_path] + self.album.path + "/" + self.id.to_s + "_large" + File.extname( APP_CONFIG[:photos_path] + self.path ) ) if File.exists?( APP_CONFIG[:thumbs_path] + self.album.path + "/" + self.id.to_s + "_large" + File.extname( APP_CONFIG[:photos_path] + self.path ) )
+  end
 end

app/models/photo_tag.rb

@@ -0,0 +1,4 @@
+class PhotoTag < ActiveRecord::Base
+  belongs_to :tag
+  belongs_to :photo
+end

app/models/tag.rb

@@ -0,0 +1,4 @@
+class Tag < ActiveRecord::Base
+  has_many :photo_tags
+  has_many :photos, :through => :photo_tags
+end

db/migrate/20090522190515_create_tags.rb

@@ -0,0 +1,12 @@
+class CreateTags < ActiveRecord::Migration
+  def self.up
+    create_table :tags do |t|
+      t.string :title, :length => 150, :null => false
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :tags
+  end
+end

db/migrate/20090522190622_create_photo_tags.rb

@@ -0,0 +1,13 @@
+class CreatePhotoTags < ActiveRecord::Migration
+  def self.up
+    create_table :photo_tags do |t|
+      t.references :tag
+      t.references :photo
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :photo_tags
+  end
+end

db/schema.rb

@@ -9,7 +9,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20090522131931) do
+ActiveRecord::Schema.define(:version => 20090522190622) do
 
   create_table "albums", :force => true do |t|
     t.string   "title",       :null => false
@@ -19,6 +19,13 @@ ActiveRecord::Schema.define(:version => 20090522131931) do
     t.text     "path"
   end
 
+  create_table "photo_tags", :force => true do |t|
+    t.integer  "tag_id"
+    t.integer  "photo_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "photos", :force => true do |t|
     t.string   "title",       :null => false
     t.text     "description"
@@ -28,6 +35,12 @@ ActiveRecord::Schema.define(:version => 20090522131931) do
     t.text     "path"
   end
 
+  create_table "tags", :force => true do |t|
+    t.string   "title",      :null => false
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "users", :force => true do |t|
     t.string   "email",                              :null => false
     t.string   "crypted_password",                   :null => false

test/fixtures/photo_tags.yml

@@ -0,0 +1,7 @@
+# Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
+
+# one:
+#   column: value
+#
+# two:
+#   column: value

test/fixtures/tags.yml

@@ -0,0 +1,7 @@
+# Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
+
+# one:
+#   column: value
+#
+# two:
+#   column: value

test/unit/photo_tag_test.rb

@@ -0,0 +1,8 @@
+require 'test_helper'
+
+class PhotoTagTest < ActiveSupport::TestCase
+  # Replace this with your real tests.
+  test "the truth" do
+    assert true
+  end
+end

test/unit/tag_test.rb

@@ -0,0 +1,8 @@
+require 'test_helper'
+
+class TagTest < ActiveSupport::TestCase
+  # Replace this with your real tests.
+  test "the truth" do
+    assert true
+  end
+end

vendor/plugins/princely/MIT-LICENSE

@@ -0,0 +1,20 @@
+Copyright (c) 2007 [name of plugin creator]
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/plugins/princely/README

@@ -0,0 +1,50 @@
+Princely
+========
+
+Princely is a simple wrapper for the Prince XML PDF generation library 
+(http://www.princexml.com). It is almost entirely based on the SubImage 
+Prince library found on this blog post:
+
+http://sublog.subimage.com/articles/2007/05/29/html-css-to-pdf-using-ruby-on-rails 
+
+I have taken the helpers and made them a little bit more generalized and 
+reusable, and created a render option set for pdf generation. The plugin
+will also automatically register the PDF MimeType so that you can use
+pdf in controller respond_to blocks.
+
+Example
+=======
+
+class Provider::EstimatesController < Provider::BaseController
+  def show
+    respond_to do |format|
+      format.html
+      format.pdf do
+        render :pdf => "file_name", 
+               :template => "controller/action.pdf.erb", 
+               :stylesheets => ["application","prince"]
+               :layout => "pdf"
+      end
+    end
+  end
+  
+  def pdf
+    make_and_send_pdf("file_name")
+  end
+end
+
+Render Defaults
+===============
+
+The defaults for the render options are as follows:
+
+layout:      false
+template:    the template for the current controller/action
+stylesheets: none
+
+Resources
+=========
+
+Trac: http://trac.intridea.com/trac/public/
+
+Copyright (c) 2007 Michael Bleigh and Intridea, Inc., released under the MIT license

vendor/plugins/princely/Rakefile

@@ -0,0 +1,15 @@
+require 'rake'
+require 'rake/testtask'
+require 'rake/rdoctask'
+
+desc 'Default: run unit tests.'
+task :default => :test
+
+desc 'Generate documentation for the princely plugin.'
+Rake::RDocTask.new(:rdoc) do |rdoc|
+  rdoc.rdoc_dir = 'rdoc'
+  rdoc.title    = 'Princely'
+  rdoc.options << '--line-numbers' << '--inline-source'
+  rdoc.rdoc_files.include('README')
+  rdoc.rdoc_files.include('lib/**/*.rb')
+end

vendor/plugins/princely/init.rb

@@ -0,0 +1,6 @@
+require 'prince'
+require 'pdf_helper'
+
+Mime::Type.register 'application/pdf', :pdf
+
+ActionController::Base.send(:include, PdfHelper)

vendor/plugins/princely/lib/pdf_helper.rb

@@ -0,0 +1,55 @@
+module PdfHelper
+  require 'prince'
+  
+  def self.included(base)
+    base.class_eval do
+      alias_method_chain :render, :princely
+    end
+  end
+  
+  def render_with_princely(options = nil, *args, &block)
+    if options.is_a?(Hash) && options.has_key?(:pdf)
+      options[:name] ||= options.delete(:pdf)
+      make_and_send_pdf(options.delete(:name), options)      
+    else
+      render_without_princely(options, *args, &block)
+    end
+  end  
+    
+  private
+  
+  def make_pdf(options = {})
+    options[:stylesheets] ||= []
+    options[:layout] ||= false
+    options[:template] ||= File.join(controller_path,action_name)
+    
+    prince = Prince.new()
+    # Sets style sheets on PDF renderer
+    prince.add_style_sheets(*options[:stylesheets].collect{|style| stylesheet_file_path(style)})
+    
+    html_string = render_to_string(:template => options[:template], :layout => options[:layout])
+    
+    # Make all paths relative, on disk paths...
+    html_string.gsub!(".com:/",".com/") # strip out bad attachment_fu URLs
+    html_string.gsub!( /src=["']+([^:]+?)["']/i ) { |m| "src=\"#{RAILS_ROOT}/public/" + $1 + '"' } # re-route absolute paths
+    
+    # Remove asset ids on images with a regex
+    html_string.gsub!( /src=["'](\S+\?\d*)["']/i ) { |m| 'src="' + $1.split('?').first + '"' }
+    
+    # Send the generated PDF file from our html string.
+    return prince.pdf_from_string(html_string)
+  end
+
+  def make_and_send_pdf(pdf_name, options = {})
+    send_data(
+      make_pdf(options),
+      :filename => pdf_name + ".pdf",
+      :type => 'application/pdf'
+    ) 
+  end
+  
+  def stylesheet_file_path(stylesheet)
+    stylesheet = stylesheet.to_s.gsub(".css","")
+    File.join(ActionView::Helpers::AssetTagHelper::STYLESHEETS_DIR,"#{stylesheet}.css")
+  end
+end

vendor/plugins/princely/lib/prince.rb

@@ -0,0 +1,75 @@
+# Prince XML Ruby interface. 
+# http://www.princexml.com
+#
+# Library by Subimage Interactive - http://www.subimage.com
+#
+#
+# USAGE
+# -----------------------------------------------------------------------------
+#   prince = Prince.new()
+#   html_string = render_to_string(:template => 'some_document')
+#   send_data(
+#     prince.pdf_from_string(html_string),
+#     :filename => 'some_document.pdf'
+#     :type => 'application/pdf'
+#   )
+#
+require 'logger'
+
+class Prince
+  attr_accessor :exe_path, :style_sheets, :log_file, :logger
+
+  # Initialize method
+  #
+  def initialize()
+    # Finds where the application lives, so we can call it.
+    @exe_path = `which prince`.chomp
+  	@style_sheets = ''
+  	@log_file = "#{RAILS_ROOT}/log/prince.log"
+  	@logger = RAILS_DEFAULT_LOGGER
+  end
+  
+  # Sets stylesheets...
+  # Can pass in multiple paths for css files.
+  #
+  def add_style_sheets(*sheets)
+    for sheet in sheets do
+      @style_sheets << " -s #{sheet} "
+    end
+  end
+  
+  # Returns fully formed executable path with any command line switches
+  # we've set based on our variables.
+  #
+  def exe_path
+    # Add any standard cmd line arguments we need to pass
+    @exe_path << " --input=html --server --log=#{@log_file} "
+    @exe_path << @style_sheets
+    return @exe_path
+  end
+  
+  # Makes a pdf from a passed in string.
+  #
+  # Returns PDF as a stream, so we can use send_data to shoot
+  # it down the pipe using Rails.
+  #
+  def pdf_from_string(string)
+    path = self.exe_path()
+    # Don't spew errors to the standard out...and set up to take IO 
+    # as input and output
+    path << ' --silent - -o -'
+    
+    # Show the command used...
+    logger.info "\n\nPRINCE XML PDF COMMAND"
+    logger.info path
+    logger.info ''
+    
+    # Actually call the prince command, and pass the entire data stream back.
+    pdf = IO.popen(path, "w+")
+    pdf.puts(string)
+    pdf.close_write
+    result = pdf.gets(nil)
+    pdf.close_read
+    return result
+  end
+end