diff options
Diffstat (limited to 'activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb')
-rw-r--r-- | activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb index 0acc815d51..a768ee2d70 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb @@ -401,7 +401,7 @@ module ActiveRecord # Adds a reference. Optionally adds a +type+ column, if the # +:polymorphic+ option is provided. +references+ and +belongs_to+ - # are acceptable. The reference column will be an +integer+ by default, + # are interchangeable. The reference column will be an +integer+ by default, # the +:type+ option can be used to specify a different type. A foreign # key will be created if the +:foreign_key+ option is passed. # @@ -535,6 +535,8 @@ module ActiveRecord # Checks to see if a column exists. # + # t.string(:name) unless t.column_exists?(:name, :string) + # # See SchemaStatements#column_exists? def column_exists?(column_name, type = nil, options = {}) @base.column_exists?(name, column_name, type, options) @@ -554,6 +556,10 @@ module ActiveRecord # Checks to see if an index exists. # + # unless t.index_exists?(:branch_id) + # t.index(:branch_id) + # end + # # See SchemaStatements#index_exists? def index_exists?(column_name, options = {}) @base.index_exists?(name, column_name, options) @@ -667,10 +673,20 @@ module ActiveRecord end alias :remove_belongs_to :remove_references + # Adds a foreign key. + # + # t.foreign_key(:authors) + # + # See SchemaStatements#add_foreign_key def foreign_key(*args) # :nodoc: @base.add_foreign_key(name, *args) end + # Checks to see if a foreign key exists. + # + # t.foreign_key(:authors) unless t.foreign_key_exists?(:authors) + # + # See SchemaStatements#foreign_key_exists? def foreign_key_exists?(*args) # :nodoc: @base.foreign_key_exists?(name, *args) end |