diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb')
| -rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb | 38 |
1 files changed, 35 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb index cdc8433185..9bae880024 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb @@ -192,6 +192,14 @@ module ActiveRecord # Set to true to drop the table before creating it. # Defaults to false. # + # Note that +create_join_table+ does not create any indices by default; you can use + # its block form to do so yourself: + # + # create_join_table :products, :categories do |t| + # t.index :products + # t.index :categories + # end + # # ====== Add a backend specific option to the generated SQL (MySQL) # create_join_table(:assemblies, :parts, options: 'ENGINE=InnoDB DEFAULT CHARSET=utf8') # generates: @@ -647,10 +655,11 @@ module ActiveRecord index_name = index_name(table_name, column: column_names) if Hash === options # legacy support, since this param was a string - options.assert_valid_keys(:unique, :order, :name, :where, :length) + options.assert_valid_keys(:unique, :order, :name, :where, :length, :internal) index_type = options[:unique] ? "UNIQUE" : "" index_name = options[:name].to_s if options.key?(:name) + max_index_length = options.fetch(:internal, false) ? index_name_length : allowed_index_name_length if supports_partial_index? index_options = options[:where] ? " WHERE #{options[:where]}" : "" @@ -665,10 +674,11 @@ module ActiveRecord end index_type = options + max_index_length = allowed_index_name_length end - if index_name.length > index_name_length - raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' is too long; the limit is #{index_name_length} characters" + if index_name.length > max_index_length + raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' is too long; the limit is #{max_index_length} characters" end if index_name_exists?(table_name, index_name, false) raise ArgumentError, "Index name '#{index_name}' on table '#{table_name}' already exists" @@ -694,6 +704,28 @@ module ActiveRecord column_names.map {|column_name| quote_column_name(column_name) } end + def rename_table_indexes(table_name, new_name) + indexes(new_name).each do |index| + generated_index_name = index_name(table_name, column: index.columns) + if generated_index_name == index.name + rename_index new_name, generated_index_name, index_name(new_name, column: index.columns) + end + end + end + + def rename_column_indexes(table_name, column_name, new_column_name) + column_name, new_column_name = column_name.to_s, new_column_name.to_s + indexes(table_name).each do |index| + next unless index.columns.include?(new_column_name) + old_columns = index.columns.dup + old_columns[old_columns.index(new_column_name)] = column_name + generated_index_name = index_name(table_name, column: old_columns) + if generated_index_name == index.name + rename_index table_name, generated_index_name, index_name(table_name, column: index.columns) + end + end + end + private def table_definition TableDefinition.new(self) |