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author | Chad Moone <chadmoone@gmail.com> | 2013-04-25 00:46:40 -0400 |
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committer | Chad Moone <chadmoone@gmail.com> | 2013-05-01 19:07:17 -0400 |
commit | 55c40c0ecec50936c439548b440216c62aa4ccbb (patch) | |
tree | 0bba0645be78bfa516f52af09140ba445970d641 /activerecord/lib | |
parent | f7f8b7ccfc2fe61c0834041d2e211dd9dfdfbbc8 (diff) | |
download | rails-55c40c0ecec50936c439548b440216c62aa4ccbb.tar.gz rails-55c40c0ecec50936c439548b440216c62aa4ccbb.tar.bz2 rails-55c40c0ecec50936c439548b440216c62aa4ccbb.zip |
allow override of uuid_generate_v4() default by passing default: nil
without this, it's not possible to use UUID primary keys without uuid-ossp installed and activated
Diffstat (limited to 'activerecord/lib')
-rw-r--r-- | activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb index bf403c3ae0..6040eeed00 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb @@ -330,9 +330,38 @@ module ActiveRecord class TableDefinition < ActiveRecord::ConnectionAdapters::TableDefinition include ColumnMethods + # Defines the primary key field. + # Use of the native PostgreSQL UUID type is supported, and can be used + # by defining your tables as such: + # + # create_table :stuffs, id: :uuid do |t| + # t.string :content + # t.timestamps + # end + # + # By default, this will use the +uuid_generate_v4()+ function from the + # +uuid-ossp+ extension, which MUST be enabled on your databse. To enable + # the +uuid-ossp+ extension, you can use the +enable_extension+ method in your + # migrations To use a UUID primary key without +uuid-ossp+ enabled, you can + # set the +:default+ option to nil: + # + # create_table :stuffs, id: false do |t| + # t.primary_key :id, :uuid, default: nil + # t.uuid :foo_id + # t.timestamps + # end + # + # You may also pass a different UUID generation function from +uuid-ossp+ + # or another library. + # + # Note that setting the UUID primary key default value to +nil+ + # will require you to assure that you always provide a UUID value + # before saving a record (as primary keys cannot be nil). This might be + # done via the SecureRandom.uuid method and a +before_save+ callback, + # for instance. def primary_key(name, type = :primary_key, options = {}) return super unless type == :uuid - options[:default] ||= 'uuid_generate_v4()' + options[:default] = options.fetch(:default, 'uuid_generate_v4()') options[:primary_key] = true column name, type, options end |