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docs for create_table and non-int primary keys. [ci skip]

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Yves Senn 2015-04-24 13:58:07 +02:00
parent 55d9e494e8
commit 107526e809
1 changed files with 17 additions and 0 deletions
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17
activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
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@ -120,6 +120,8 @@ module ActiveRecord
# [<tt>:id</tt>] # [<tt>:id</tt>]
# Whether to automatically add a primary key column. Defaults to true. # Whether to automatically add a primary key column. Defaults to true.
# Join tables for +has_and_belongs_to_many+ should set it to false. # Join tables for +has_and_belongs_to_many+ should set it to false.
#
# A Symbol can be used to specify the type of the generated primary key column.
# [<tt>:primary_key</tt>] # [<tt>:primary_key</tt>]
# The name of the primary key, if one is to be added automatically. # The name of the primary key, if one is to be added automatically.
# Defaults to +id+. If <tt>:id</tt> is false this option is ignored. # Defaults to +id+. If <tt>:id</tt> is false this option is ignored.
@ -163,6 +165,21 @@ module ActiveRecord
# name varchar(80) # name varchar(80)
# ) # )
# #
# ====== Change the primary key column type
#
# create_table(:categories_suppliers, id: :string) do |t|
# t.column :category_id, :integer
# t.column :supplier_id, :integer
# end
#
# generates:
#
# CREATE TABLE categories_suppliers (
# id varchar PRIMARY KEY,
# category_id int,
# supplier_id int
# )
#
# ====== Do not add a primary key column # ====== Do not add a primary key column
# #
# create_table(:categories_suppliers, id: false) do |t| # create_table(:categories_suppliers, id: false) do |t|