Class: CreateContentParts

Inherits:
ActiveRecord::Migration
  • Object
show all
Defined in:
lib/generators/templates/create_content_parts.rb

Class Method Summary collapse

Class Method Details

.down ⇒ Object 



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# File 'lib/generators/templates/create_content_parts.rb', line 41

def self.down
  add_column :videos, :post_id, :integer
  # Migrate videos directly to posts
  # ...
  remove_column :videos, :content_part_id

  add_column :posts, :body, :text
  add_column :posts, :post_type, :string
  # Migrate content-parts to posts body and post_type
  Atreides::ContentPart.where("contentable_id is not null").each do |p|
    next if p.contentable.nil?
    post = p.contentable
    case p.content_type.to_sym
    when :text
      post.body = p.body
    when :photos
      post.photos = p.photos
    when :videos
      post.videos = p.videos
    end
    post.save
  end

  drop_table :content_parts
end

.up ⇒ Object 



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# File 'lib/generators/templates/create_content_parts.rb', line 2

def self.up
  create_table :content_parts, :force => true do |t|
    t.text        :body, :default => ""
    t.references  :contentable, :polymorphic => true
    t.string      :display_type
    t.string      :content_type
    t.integer     :display_order, :default => 0
    t.timestamps
  end

  # Update videos table
  add_column :videos, :content_part_id, :integer
  # Migrate old videos to new content-parts
  # ...

  # Migrate posts bodies to content-parts
  Atreides::Post.where("post_type = 'post' AND body is not null").all.each do |p|
    p.parts.create(:content_type => 'text', :body => p.body)
  end

  # Migrate posts bodies to content-parts
  Atreides::Post.where("post_type = 'photos'").all.each do |p|
    photos = Atreides::Photo.where({:photoable_id => p.id, :photoable_type => 'Atreides::Post'}).all
    p.parts.create(:content_type => 'photos', :photos => photos)
    p.parts.create(:content_type => 'text', :body => p.body) if p.body?
  end

  Atreides::Post.where("post_type = 'videos'").all.each do |p|
    videos = Atreides::Video.where({:post_id => p.id}).all
    p.parts.create(:content_type => 'videos', :videos => p.videos)
    p.parts.create(:content_type => 'text', :body => p.body) if p.body?
  end

  remove_column :videos, :post_id
  remove_column :posts, :body
  remove_column :posts, :post_type

end