obsolete.ChilliProject/db/migrate/20100714111651_generalize_j...

146 lines
5.4 KiB
Ruby

#-- copyright
# ChiliProject is a project management system.
#
# Copyright (C) 2010-2011 the ChiliProject Team
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# See doc/COPYRIGHT.rdoc for more details.
#++
class GeneralizeJournals < ActiveRecord::Migration
def self.up
# This is provided here for migrating up after the JournalDetails has been removed
unless Object.const_defined?("JournalDetails")
Object.const_set("JournalDetails", Class.new(ActiveRecord::Base))
end
change_table :journals do |t|
t.rename :journalized_id, :journaled_id
t.rename :created_on, :created_at
t.integer :version, :default => 0, :null => false
t.string :activity_type
t.text :changes
t.string :type
t.index :journaled_id
t.index :activity_type
t.index :created_at
t.index :type
end
Journal.all.group_by(&:journaled_id).each_pair do |id, journals|
journals.sort_by(&:created_at).each_with_index do |j, idx|
j.update_attribute(:type, "#{j.journalized_type}Journal")
j.update_attribute(:version, idx + 1)
# FIXME: Find some way to choose the right activity here
j.update_attribute(:activity_type, j.journalized_type.constantize.activity_provider_options.keys.first)
end
end
change_table :journals do |t|
t.remove :journalized_type
end
# Build initial journals for all activity providers
providers = Redmine::Activity.providers.collect {|k, v| v.collect(&:constantize) }.flatten.compact.uniq
providers.each do |p|
next unless p.table_exists? # Objects not in the DB yet need creation journal entries
p.find(:all).each do |o|
# Create initial journals
new_journal = o.journals.build
# Mock up a list of changes for the creation journal based on Class defaults
new_attributes = o.class.new.attributes.except(o.class.primary_key,
o.class.inheritance_column,
:updated_on,
:updated_at,
:lock_version,
:lft,
:rgt)
creation_changes = {}
new_attributes.each do |name, default_value|
# Set changes based on the initial value to current. Can't get creation value without
# rebuiling the object history
creation_changes[name] = [default_value, o.send(name)] # [initial_value, creation_value]
end
new_journal.changes = creation_changes
new_journal.version = 1
if o.respond_to?(:author)
new_journal.user = o.author
elsif o.respond_to?(:user)
new_journal.user = o.user
end
new_journal.save
# Backdate journal
if o.respond_to?(:created_at)
new_journal.update_attribute(:created_at, o.created_at)
elsif o.respond_to?(:created_on)
new_journal.update_attribute(:created_at, o.created_on)
end
p "Updating #{o}"
end
end
# Migrate journal changes now
JournalDetails.all.each do |detail|
journal = Journal.find(detail.journal_id)
changes = journal.changes || {}
if detail.property == 'attr' # Standard attributes
changes[detail.prop_key.to_s] = [detail.old_value, detail.value]
elsif detail.property == 'cf' # Custom fields
changes["custom_values_" + detail.prop_key.to_s] = [detail.old_value, detail.value]
elsif detail.property == 'attachment' # Attachment
changes["attachments_" + detail.prop_key.to_s] = [detail.old_value, detail.value]
end
journal.update_attribute(:changes, changes.to_yaml)
end
# drop_table :journal_details
end
def self.down
# create_table "journal_details", :force => true do |t|
# t.integer "journal_id", :default => 0, :null => false
# t.string "property", :limit => 30, :default => "", :null => false
# t.string "prop_key", :limit => 30, :default => "", :null => false
# t.string "old_value"
# t.string "value"
# end
change_table "journals" do |t|
t.rename :journaled_id, :journalized_id
t.rename :created_at, :created_on
t.string :journalized_type, :limit => 30, :default => "", :null => false
end
custom_field_names = CustomField.all.group_by(&:type)[IssueCustomField].collect(&:name)
Journal.all.each do |j|
# Can't used j.journalized.class.name because the model changes make it nil
j.update_attribute(:journalized_type, j.type.to_s.sub("Journal","")) if j.type.present?
end
change_table "journals" do |t|
t.remove_index :journaled_id
t.remove_index :activity_type
t.remove_index :created_at
t.remove_index :type
t.remove :type
t.remove :version
t.remove :activity_type
t.remove :changes
end
# add_index "journal_details", ["journal_id"], :name => "journal_details_journal_id"
# add_index "journals", ["journalized_id", "journalized_type"], :name => "journals_journalized_id"
end
end