Class: Desert::PluginMigrations::Migrator

Inherits:
ActiveRecord::Migrator
  • Object
show all
Defined in:
lib/desert/plugin_migrations/migrator.rb

Overview

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

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.current_version ⇒ Object

:nodoc:



24
25
26
27
28
29
30
31
32
 
# File 'lib/desert/plugin_migrations/migrator.rb', line 24

def current_version #:nodoc:
  result = ActiveRecord::Base.connection.select_one("SELECT version FROM #{schema_info_table_name} WHERE plugin_name = '#{current_plugin.name}'")
  if result
    result['version'].to_i
  else
    # There probably isn't an entry for this plugin in the migration info table.
    0
  end
end

.migrate_plugin(plugin, version = nil) ⇒ Object

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



11
12
13
14
15
16
17
 
# 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_info_table_name ⇒ Object Also known as: schema_migrations_table_name

:nodoc:



19
20
21
 
# File 'lib/desert/plugin_migrations/migrator.rb', line 19

def schema_info_table_name #:nodoc:
  ActiveRecord::Base.table_name_prefix + 'plugin_schema_info' + ActiveRecord::Base.table_name_suffix
end

Instance Method Details

#migrated ⇒ Object 



48
49
50
51
 
# File 'lib/desert/plugin_migrations/migrator.rb', line 48

def migrated
  current_plugin_version = self.class.current_version
  (1..current_plugin_version).to_a
end

#set_schema_version(version) ⇒ Object Also known as: record_version_state_after_migrating 



35
36
37
38
39
40
41
42
43
44
 
# File 'lib/desert/plugin_migrations/migrator.rb', line 35

def set_schema_version(version)
  version = down? ? version.to_i - 1 : version.to_i

  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