From f8e748b4e85996cb70a3e6f258944ad45f07a802 Mon Sep 17 00:00:00 2001 From: Ryuta Kamizono Date: Sat, 2 May 2015 21:31:47 +0900 Subject: PostgreSQL: `:collation` support for string and text columns Example: create_table :foos do |t| t.string :string_en, collation: 'en_US.UTF-8' t.text :text_ja, collation: 'ja_JP.UTF-8' end --- .../connection_adapters/postgresql/schema_statements.rb | 14 ++++++++++++-- .../connection_adapters/postgresql_adapter.rb | 4 +++- 2 files changed, 15 insertions(+), 3 deletions(-) (limited to 'activerecord/lib') diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb index bb944c7cfd..662c6b4d38 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -8,6 +8,13 @@ module ActiveRecord o.sql_type = type_to_sql(o.type, o.limit, o.precision, o.scale, o.array) super end + + def add_column_options!(sql, options) + if options[:collation] + sql << " COLLATE \"#{options[:collation]}\"" + end + super + end end module SchemaStatements @@ -159,13 +166,13 @@ module ActiveRecord # Returns the list of all column definitions for a table. def columns(table_name) # Limit, precision, and scale are all handled by the superclass. - column_definitions(table_name).map do |column_name, type, default, notnull, oid, fmod| + column_definitions(table_name).map do |column_name, type, default, notnull, oid, fmod, collation| oid = oid.to_i fmod = fmod.to_i type_metadata = fetch_type_metadata(column_name, type, oid, fmod) default_value = extract_value_from_default(default) default_function = extract_default_function(default_value, default) - new_column(column_name, default_value, type_metadata, !notnull, default_function) + new_column(column_name, default_value, type_metadata, !notnull, default_function, collation) end end @@ -409,6 +416,9 @@ module ActiveRecord quoted_column_name = quote_column_name(column_name) sql_type = type_to_sql(type, options[:limit], options[:precision], options[:scale], options[:array]) sql = "ALTER TABLE #{quoted_table_name} ALTER COLUMN #{quoted_column_name} TYPE #{sql_type}" + if options[:collation] + sql << " COLLATE \"#{options[:collation]}\"" + end if options[:using] sql << " USING #{options[:using]}" elsif options[:cast_as] diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index 332ac9d88c..7e15c2ab26 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -772,7 +772,9 @@ module ActiveRecord def column_definitions(table_name) # :nodoc: exec_query(<<-end_sql, 'SCHEMA').rows SELECT a.attname, format_type(a.atttypid, a.atttypmod), - pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod + pg_get_expr(d.adbin, d.adrelid), a.attnotnull, a.atttypid, a.atttypmod, + (SELECT c.collname FROM pg_collation c, pg_type t + WHERE c.oid = a.attcollation AND t.oid = a.atttypid AND a.attcollation <> t.typcollation) FROM pg_attribute a LEFT JOIN pg_attrdef d ON a.attrelid = d.adrelid AND a.attnum = d.adnum WHERE a.attrelid = '#{quote_table_name(table_name)}'::regclass -- cgit v1.2.3