class Desert::PluginMigrations::Migrator

Responsible for migrating plugins. PluginMigrations.Migrator.current_plugin indicates which plugin is currently being migrated

Public Class Methods

get_all_versions() click to toggle source

# File lib/desert/plugin_migrations/2.1/migrator.rb, line 15
def get_all_versions
  ActiveRecord::Base.connection.select_values("SELECT version FROM #{schema_migrations_table_name} where plugin_name='#{current_plugin.name}'").map(&:to_i).sort
end

legacy_schema_table_exists?() click to toggle source

# File lib/desert/plugin_migrations/migrator.rb, line 27
def legacy_schema_table_exists?
  ActiveRecord::Base.connection.tables.include? schema_info_table_name
end

migrate_plugin(plugin, version = nil) click to toggle source

Runs the migrations from a plugin, up (or down) to the version given

# File lib/desert/plugin_migrations/migrator.rb, line 11
def migrate_plugin(plugin, version = nil)
  self.current_plugin = plugin
  if ActiveRecord::Base.connection.respond_to?(:initialize_schema_migrations_table)
    ActiveRecord::Base.connection.initialize_schema_migrations_table
  end
  migrate(plugin.migration_path, version)
end

schema_migrations_table_name() click to toggle source

# File lib/desert/plugin_migrations/migrator.rb, line 23
def schema_migrations_table_name
  ActiveRecord::Base.table_name_prefix + 'plugin_schema_migrations' + ActiveRecord::Base.table_name_suffix
end

Public Instance Methods

migrated() click to toggle source

# File lib/desert/plugin_migrations/2.1/migrator.rb, line 30
def migrated
  self.class.get_all_versions
end

record_version_state_after_migrating(version) click to toggle source

# File lib/desert/plugin_migrations/2.1/migrator.rb, line 20
def record_version_state_after_migrating(version)
  sm_table = self.class.schema_migrations_table_name

  if down?
    ActiveRecord::Base.connection.update("DELETE FROM #{sm_table} WHERE version = '#{version}' AND plugin_name = '#{current_plugin.name}'")
  else
    ActiveRecord::Base.connection.insert("INSERT INTO #{sm_table} (plugin_name, version) VALUES ('#{current_plugin.name}', '#{version}')")
  end
end

set_schema_version(version) click to toggle source

# File lib/desert/plugin_migrations/1.2/migrator.rb, line 20
def set_schema_version(version)
  version = down? ? version.to_i - 1 : version.to_i

  if self.class.legacy_schema_table_exists?
    if ActiveRecord::Base.connection.select_one("SELECT version FROM #{self.class.schema_info_table_name} WHERE plugin_name = '#{current_plugin.name}'").nil?
      # We need to create the entry since it doesn't exist
      ActiveRecord::Base.connection.execute("INSERT INTO #{self.class.schema_info_table_name} (version, plugin_name) VALUES (#{version},'#{current_plugin.name}')")
    else
      ActiveRecord::Base.connection.update("UPDATE #{self.class.schema_info_table_name} SET version = #{version} WHERE plugin_name = '#{current_plugin.name}'")
    end
  end
end