Class: Sequel::Schema::Generator
- Defined in:
- lib/sequel/extensions/schema_dumper.rb
Direct Known Subclasses
Instance Method Summary collapse
-
#dump_columns ⇒ Object
Dump this generator’s columns to a string that could be evaled inside another instance to represent the same columns.
-
#dump_constraints ⇒ Object
Dump this generator’s constraints to a string that could be evaled inside another instance to represent the same constraints.
-
#dump_indexes(options = OPTS) ⇒ Object
Dump this generator’s indexes to a string that could be evaled inside another instance to represent the same indexes.
Instance Method Details
#dump_columns ⇒ Object
Dump this generator’s columns to a string that could be evaled inside another instance to represent the same columns
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# File 'lib/sequel/extensions/schema_dumper.rb', line 366 def dump_columns strings = [] cols = columns.dup cols.each do |x| x.delete(:on_delete) if x[:on_delete] == :no_action x.delete(:on_update) if x[:on_update] == :no_action end if pkn = primary_key_name cols.delete_if{|x| x[:name] == pkn} pk = @primary_key.dup pkname = pk.delete(:name) @db..each{|k,v| pk.delete(k) if v == pk[k]} strings << "primary_key #{pkname.inspect}#{opts_inspect(pk)}" end cols.each do |c| c = c.dup name = c.delete(:name) strings << if table = c.delete(:table) c.delete(:type) if c[:type] == Integer || c[:type] == 'integer' "foreign_key #{name.inspect}, #{table.inspect}#{opts_inspect(c)}" else type = c.delete(:type) opts = opts_inspect(c) if type.is_a?(Class) "#{type.name} #{name.inspect}#{opts}" else "column #{name.inspect}, #{type.inspect}#{opts}" end end end strings.join("\n") end |
#dump_constraints ⇒ Object
Dump this generator’s constraints to a string that could be evaled inside another instance to represent the same constraints
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# File 'lib/sequel/extensions/schema_dumper.rb', line 401 def dump_constraints cs = constraints.map do |c| c = c.dup type = c.delete(:type) case type when :check raise(Error, "can't dump check/constraint specified with Proc") if c[:check].is_a?(Proc) name = c.delete(:name) if !name and c[:check].length == 1 and c[:check].first.is_a?(Hash) "check #{c[:check].first.inspect[1...-1]}" else "#{name ? "constraint #{name.inspect}," : 'check'} #{c[:check].map{|x| x.inspect}.join(', ')}" end when :foreign_key c.delete(:on_delete) if c[:on_delete] == :no_action c.delete(:on_update) if c[:on_update] == :no_action c.delete(:deferrable) unless c[:deferrable] cols = c.delete(:columns) table = c.delete(:table) "#{type} #{cols.inspect}, #{table.inspect}#{opts_inspect(c)}" else cols = c.delete(:columns) "#{type} #{cols.inspect}#{opts_inspect(c)}" end end cs.join("\n") end |
#dump_indexes(options = OPTS) ⇒ Object
Dump this generator’s indexes to a string that could be evaled inside another instance to represent the same indexes. Options:
-
:add_index - Use add_index instead of index, so the methods can be called outside of a generator but inside a migration. The value of this option should be the table name to use.
-
:drop_index - Same as add_index, but create drop_index statements.
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:ignore_errors - Add the ignore_errors option to the outputted indexes
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# File 'lib/sequel/extensions/schema_dumper.rb', line 436 def dump_indexes(=OPTS) is = indexes.map do |c| c = c.dup cols = c.delete(:columns) if table = [:add_index] || [:drop_index] "#{[:drop_index] ? 'drop' : 'add'}_index #{table.inspect}, #{cols.inspect}#{', :ignore_errors=>true' if [:ignore_errors]}#{opts_inspect(c)}" else "index #{cols.inspect}#{opts_inspect(c)}" end end is = is.reverse if [:drop_index] is.join("\n") end |