diff options
Diffstat (limited to 'activerecord/lib/active_record')
3 files changed, 34 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb index 322684672f..807df2184a 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_creation.rb @@ -15,9 +15,9 @@ module ActiveRecord end delegate :quote_column_name, :quote_table_name, :quote_default_expression, :type_to_sql, - :options_include_default?, :supports_indexes_in_create?, :supports_foreign_keys?, :foreign_key_options, to: :@conn + :options_include_default?, :supports_indexes_in_create?, :supports_foreign_keys_in_create?, :foreign_key_options, to: :@conn private :quote_column_name, :quote_table_name, :quote_default_expression, :type_to_sql, - :options_include_default?, :supports_indexes_in_create?, :supports_foreign_keys?, :foreign_key_options + :options_include_default?, :supports_indexes_in_create?, :supports_foreign_keys_in_create?, :foreign_key_options private @@ -49,7 +49,7 @@ module ActiveRecord statements.concat(o.indexes.map { |column_name, options| index_in_create(o.name, column_name, options) }) end - if supports_foreign_keys? + if supports_foreign_keys_in_create? statements.concat(o.foreign_keys.map { |to_table, options| foreign_key_in_create(o.name, to_table, options) }) end diff --git a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb index cf2269bf12..348396de72 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract_adapter.rb @@ -310,6 +310,12 @@ module ActiveRecord false end + # Does this adapter support creating foreign key constraints + # in the same statement as creating the table? + def supports_foreign_keys_in_create? + supports_foreign_keys? + end + # Does this adapter support views? def supports_views? false diff --git a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb index 2e3419991e..ca6de37a6b 100644 --- a/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/sqlite3_adapter.rb @@ -130,6 +130,10 @@ module ActiveRecord true end + def supports_foreign_keys_in_create? + sqlite_version >= "3.6.19" + end + def supports_views? true end @@ -439,6 +443,19 @@ module ActiveRecord rename_column_indexes(table_name, column.name, new_column_name) end + def foreign_keys(table_name) + fk_info = select_all("PRAGMA foreign_key_list(#{quote(table_name)})", "SCHEMA") + fk_info.map do |row| + options = { + column: row["from"], + primary_key: row["to"], + on_delete: extract_foreign_key_action(row["on_delete"]), + on_update: extract_foreign_key_action(row["on_update"]) + } + ForeignKeyDefinition.new(table_name, row["table"], options) + end + end + private def table_structure(table_name) @@ -592,6 +609,14 @@ module ActiveRecord SQLite3::TableDefinition.new(*args) end + def extract_foreign_key_action(specifier) + case specifier + when "CASCADE"; :cascade + when "SET NULL"; :nullify + when "RESTRICT"; :restrict + end + end + def configure_connection execute("PRAGMA foreign_keys = ON", "SCHEMA") end |