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 | 90 |
1 files changed, 44 insertions, 46 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 d73ffc3da6..fdb18b234c 100644 --- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb +++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb @@ -18,11 +18,11 @@ module ActiveRecord # # +name+ is the column's name, as in <tt><b>supplier_id</b> int(11)</tt>. # +default+ is the type-casted default value, such as <tt>sales_stage varchar(20) default <b>'new'</b></tt>. - # +sql_type+ is only used to extract the column's length, if necessary. For example, <tt>company_name varchar(<b>60</b>)</tt>. + # +sql_type+ is only used to extract the column's length, if necessary. For example, <tt>company_name varchar(<b>60</b>)</tt>. # +null+ determines if this column allows +NULL+ values. def initialize(name, default, sql_type = nil, null = true) @name, @sql_type, @null = name, sql_type, null - @limit, @precision, @scale = extract_limit(sql_type), extract_precision(sql_type), extract_scale(sql_type) + @limit, @precision, @scale = extract_limit(sql_type), extract_precision(sql_type), extract_scale(sql_type) @type = simplified_type(sql_type) @default = extract_default(default) @@ -172,7 +172,7 @@ module ActiveRecord def new_time(year, mon, mday, hour, min, sec, microsec) # Treat 0000-00-00 00:00:00 as nil. return nil if year.nil? || year == 0 - + Time.time_with_datetime_fallback(Base.default_timezone, year, mon, mday, hour, min, sec, microsec) rescue nil end @@ -250,11 +250,11 @@ module ActiveRecord end class ColumnDefinition < Struct.new(:base, :name, :type, :limit, :precision, :scale, :default, :null) #:nodoc: - + def sql_type base.type_to_sql(type.to_sym, limit, precision, scale) rescue type end - + def to_sql column_sql = "#{base.quote_column_name(name)} #{sql_type}" add_column_options!(column_sql, :null => null, :default => default) unless type.to_sym == :primary_key @@ -309,39 +309,39 @@ module ActiveRecord # * <tt>:default</tt> - # The column's default value. Use nil for NULL. # * <tt>:null</tt> - - # Allows or disallows +NULL+ values in the column. This option could + # Allows or disallows +NULL+ values in the column. This option could # have been named <tt>:null_allowed</tt>. # * <tt>:precision</tt> - - # Specifies the precision for a <tt>:decimal</tt> column. + # Specifies the precision for a <tt>:decimal</tt> column. # * <tt>:scale</tt> - - # Specifies the scale for a <tt>:decimal</tt> column. + # Specifies the scale for a <tt>:decimal</tt> column. # # Please be aware of different RDBMS implementations behavior with # <tt>:decimal</tt> columns: # * The SQL standard says the default scale should be 0, <tt>:scale</tt> <= # <tt>:precision</tt>, and makes no comments about the requirements of # <tt>:precision</tt>. - # * MySQL: <tt>:precision</tt> [1..63], <tt>:scale</tt> [0..30]. + # * MySQL: <tt>:precision</tt> [1..63], <tt>:scale</tt> [0..30]. # Default is (10,0). - # * PostgreSQL: <tt>:precision</tt> [1..infinity], + # * PostgreSQL: <tt>:precision</tt> [1..infinity], # <tt>:scale</tt> [0..infinity]. No default. - # * SQLite2: Any <tt>:precision</tt> and <tt>:scale</tt> may be used. + # * SQLite2: Any <tt>:precision</tt> and <tt>:scale</tt> may be used. # Internal storage as strings. No default. # * SQLite3: No restrictions on <tt>:precision</tt> and <tt>:scale</tt>, # but the maximum supported <tt>:precision</tt> is 16. No default. - # * Oracle: <tt>:precision</tt> [1..38], <tt>:scale</tt> [-84..127]. + # * Oracle: <tt>:precision</tt> [1..38], <tt>:scale</tt> [-84..127]. # Default is (38,0). - # * DB2: <tt>:precision</tt> [1..63], <tt>:scale</tt> [0..62]. + # * DB2: <tt>:precision</tt> [1..63], <tt>:scale</tt> [0..62]. # Default unknown. - # * Firebird: <tt>:precision</tt> [1..18], <tt>:scale</tt> [0..18]. + # * Firebird: <tt>:precision</tt> [1..18], <tt>:scale</tt> [0..18]. # Default (9,0). Internal types NUMERIC and DECIMAL have different # storage rules, decimal being better. - # * FrontBase?: <tt>:precision</tt> [1..38], <tt>:scale</tt> [0..38]. + # * FrontBase?: <tt>:precision</tt> [1..38], <tt>:scale</tt> [0..38]. # Default (38,0). WARNING Max <tt>:precision</tt>/<tt>:scale</tt> for # NUMERIC is 19, and DECIMAL is 38. - # * SqlServer?: <tt>:precision</tt> [1..38], <tt>:scale</tt> [0..38]. + # * SqlServer?: <tt>:precision</tt> [1..38], <tt>:scale</tt> [0..38]. # Default (38,0). - # * Sybase: <tt>:precision</tt> [1..38], <tt>:scale</tt> [0..38]. + # * Sybase: <tt>:precision</tt> [1..38], <tt>:scale</tt> [0..38]. # Default (38,0). # * OpenBase?: Documentation unclear. Claims storage in <tt>double</tt>. # @@ -394,7 +394,7 @@ module ActiveRecord # t.timestamps # end # - # There's a short-hand method for each of the type values declared at the top. And then there's + # There's a short-hand method for each of the type values declared at the top. And then there's # TableDefinition#timestamps that'll add created_at and updated_at as datetimes. # # TableDefinition#references will add an appropriately-named _id column, plus a corresponding _type @@ -434,13 +434,13 @@ module ActiveRecord def #{column_type}(*args) options = args.extract_options! column_names = args - + column_names.each { |name| column(name, '#{column_type}', options) } end EOV end - - # Appends <tt>:datetime</tt> columns <tt>:created_at</tt> and + + # Appends <tt>:datetime</tt> columns <tt>:created_at</tt> and # <tt>:updated_at</tt> to the table. def timestamps column(:created_at, :datetime) @@ -458,7 +458,7 @@ module ActiveRecord alias :belongs_to :references # Returns a String whose contents are the column definitions - # concatenated together. This string can then be prepended and appended to + # concatenated together. This string can then be prepended and appended to # to generate the final SQL to create the table. def to_sql @columns * ', ' @@ -510,15 +510,15 @@ module ActiveRecord # Adds a new column to the named table. # See TableDefinition#column for details of the options you can use. - # ===== Examples - # ====== Creating a simple columns + # ===== Example + # ====== Creating a simple column # t.column(:name, :string) def column(column_name, type, options = {}) @base.add_column(@table_name, column_name, type, options) end - # Adds a new index to the table. +column_name+ can be a single Symbol, or - # an Array of Symbols. See SchemaStatements#add_index + # Adds a new index to the table. +column_name+ can be a single Symbol, or + # an Array of Symbols. See SchemaStatements#add_index # # ===== Examples # ====== Creating a simple index @@ -531,8 +531,8 @@ module ActiveRecord @base.add_index(@table_name, column_name, options) end - # Adds timestamps (created_at and updated_at) columns to the table. See SchemaStatements#timestamps - # ===== Examples + # Adds timestamps (created_at and updated_at) columns to the table. See SchemaStatements#add_timestamps + # ===== Example # t.timestamps def timestamps @base.add_timestamps(@table_name) @@ -547,7 +547,7 @@ module ActiveRecord @base.change_column(@table_name, column_name, type, options) end - # Sets a new default value for a column. See + # Sets a new default value for a column. See SchemaStatements#change_column_default # ===== Examples # t.change_default(:qualification, 'new') # t.change_default(:authorized, 1) @@ -559,27 +559,27 @@ module ActiveRecord # ===== Examples # t.remove(:qualification) # t.remove(:qualification, :experience) - # t.removes(:qualification, :experience) def remove(*column_names) @base.remove_column(@table_name, column_names) end - # Remove the given index from the table. + # Removes the given index from the table. # - # Remove the suppliers_name_index in the suppliers table. + # ===== Examples + # ====== Remove the suppliers_name_index in the suppliers table # t.remove_index :name - # Remove the index named accounts_branch_id_index in the accounts table. + # ====== Remove the index named accounts_branch_id_index in the accounts table # t.remove_index :column => :branch_id - # Remove the index named accounts_branch_id_party_id_index in the accounts table. + # ====== Remove the index named accounts_branch_id_party_id_index in the accounts table # t.remove_index :column => [:branch_id, :party_id] - # Remove the index named by_branch_party in the accounts table. + # ====== Remove the index named by_branch_party in the accounts table # t.remove_index :name => :by_branch_party def remove_index(options = {}) @base.remove_index(@table_name, options) end # Removes the timestamp columns (created_at and updated_at) from the table. - # ===== Examples + # ===== Example # t.remove_timestamps def remove_timestamps @base.remove_timestamps(@table_name) @@ -592,12 +592,11 @@ module ActiveRecord @base.rename_column(@table_name, column_name, new_column_name) end - # Adds a reference. Optionally adds a +type+ column. <tt>reference</tt>, - # <tt>references</tt> and <tt>belongs_to</tt> are all acceptable - # ===== Example + # Adds a reference. Optionally adds a +type+ column. + # <tt>references</tt> and <tt>belongs_to</tt> are acceptable. + # ===== Examples # t.references(:goat) # t.references(:goat, :polymorphic => true) - # t.references(:goat) # t.belongs_to(:goat) def references(*args) options = args.extract_options! @@ -609,12 +608,11 @@ module ActiveRecord end alias :belongs_to :references - # Adds a reference. Optionally removes a +type+ column. <tt>remove_reference</tt>, - # <tt>remove_references</tt> and <tt>remove_belongs_to</tt> are all acceptable - # ===== Example - # t.remove_reference(:goat) - # t.remove_reference(:goat, :polymorphic => true) + # Removes a reference. Optionally removes a +type+ column. + # <tt>remove_references</tt> and <tt>remove_belongs_to</tt> are acceptable. + # ===== Examples # t.remove_references(:goat) + # t.remove_references(:goat, :polymorphic => true) # t.remove_belongs_to(:goat) def remove_references(*args) options = args.extract_options! @@ -627,7 +625,7 @@ module ActiveRecord alias :remove_belongs_to :remove_references # Adds a column or columns of a specified type - # ===== Example + # ===== Examples # t.string(:goat) # t.string(:goat, :sheep) %w( string text integer float decimal datetime timestamp time date binary boolean ).each do |column_type| |