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class PhotoStatusMessageAssociationOnGuid < ActiveRecord::Migration
class Post < ActiveRecord::Base
attr_accessible :id, :guid, :status_message_id, :status_message_guid
self.inheritance_column = :_type_disabled
end
def self.up
add_column :posts, :status_message_guid, :string
ActiveRecord::Base.record_timestamps = false
photos = Post.where(Post.arel_table[:status_message_id].not_eq(nil).and(Post.arel_table[:type].eq('Photo')))
photos.each do |photo|
if Post.where(:id => photo.status_message_id).exists?
status_message = Post.find(photo.status_message_id)
photo.update_attributes(:status_message_guid => status_message.guid)
end
end
remove_index :posts, [:status_message_id]
remove_index :posts, [:status_message_id, :pending]
add_index :posts, :status_message_guid
add_index :posts, [:status_message_guid, :pending]
remove_column :posts, :status_message_id
end
def self.down
add_column :posts, :status_message_id, :integer
ActiveRecord::Base.record_timestamps = false
photos = Post.where(Post.arel_table[:status_message_guid].not_eq(nil).and(Post.arel_table[:type].eq('Photo')))
photos.each do |photo|
if Post.where(:guid => photo.status_message_guid).exists?
status_message = Post.where(:guid => photo.status_message_guid).first
photo.update_attributes(:status_message_id => status_message.id)
end
end
remove_index :posts, [:status_message_guid, :pending]
remove_index :posts, :status_message_guid
add_index :posts, :status_message_id
add_index :posts, [:status_message_id, :pending]
remove_column :posts, :status_message_guid
end
end
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