Module: PluginAWeek::PluginMigrations::Extensions::SchemaStatements

Defined in:
lib/plugin_migrations/extensions/schema_statements.rb

Overview

Adds support for the plugin schema info table

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object

:nodoc:



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# File 'lib/plugin_migrations/extensions/schema_statements.rb', line 6

def self.included(base) #:nodoc:
  base.class_eval do
    alias_method_chain :initialize_schema_information, :plugins
    alias_method_chain :dump_schema_information, :plugins
  end
end

Instance Method Details

#dump_schema_information_with_plugins ⇒ Object

Dumps the plugin schema info table as well as information about the current plugin migrations



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# File 'lib/plugin_migrations/extensions/schema_statements.rb', line 26

def dump_schema_information_with_plugins
  schema_information = []
  
  dump = dump_schema_information_without_plugins
  schema_information << dump if dump
  
  begin
    plugins = ActiveRecord::Base.connection.select_all("SELECT * FROM #{PluginAWeek::PluginMigrations::Migrator.schema_info_table_name}")
    plugins.each do |plugin|
      if (version = plugin['version'].to_i) > 0
        plugin_name = ActiveRecord::Base.quote_value(plugin['plugin_name'])
        schema_information << "INSERT INTO #{PluginAWeek::PluginMigrations::Migrator.schema_info_table_name} (plugin_name, version) VALUES (#{plugin_name}, #{version})"
      end
    end
  rescue ActiveRecord::StatementInvalid 
    # No Schema Info
  end
  
  schema_information.join(";\n")
end

#initialize_schema_information_with_plugins ⇒ Object

Creates the plugin schema info table



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# File 'lib/plugin_migrations/extensions/schema_statements.rb', line 14

def initialize_schema_information_with_plugins
  initialize_schema_information_without_plugins
  
  begin
    execute "CREATE TABLE #{PluginAWeek::PluginMigrations::Migrator.schema_info_table_name} (plugin_name #{type_to_sql(:string)}, version #{type_to_sql(:integer)})"
  rescue ActiveRecord::StatementInvalid
    # Schema has been initialized
  end
end