Class Sequel::Schema::Generator
In: lib/sequel/extensions/schema_dumper.rb
Parent: Object

Methods

Public Instance methods

Dump this generator‘s columns to a string that could be evaled inside another instance to represent the same columns

[Source]

     # File lib/sequel/extensions/schema_dumper.rb, line 387
387:       def dump_columns
388:         strings = []
389:         cols = columns.dup
390:         cols.each do |x|
391:           x.delete(:on_delete) if x[:on_delete] == :no_action
392:           x.delete(:on_update) if x[:on_update] == :no_action
393:         end
394:         if pkn = primary_key_name
395:           cols.delete_if{|x| x[:name] == pkn}
396:           pk = @primary_key.dup
397:           pkname = pk.delete(:name)
398:           @db.serial_primary_key_options.each{|k,v| pk.delete(k) if v == pk[k]}
399:           strings << "primary_key #{pkname.inspect}#{opts_inspect(pk)}"
400:         end
401:         cols.each do |c|
402:           c = c.dup
403:           name = c.delete(:name)
404:           strings << if table = c.delete(:table)
405:             c.delete(:type) if c[:type] == Integer || c[:type] == 'integer'
406:             "foreign_key #{name.inspect}, #{table.inspect}#{opts_inspect(c)}"
407:           else
408:             type = c.delete(:type)
409:             opts = opts_inspect(c)
410:             if type.is_a?(Class)
411:               "#{type.name} #{name.inspect}#{opts}"
412:             else
413:               "column #{name.inspect}, #{type.inspect}#{opts}"
414:             end
415:           end
416:         end
417:         strings.join("\n")
418:       end

Dump this generator‘s constraints to a string that could be evaled inside another instance to represent the same constraints

[Source]

     # File lib/sequel/extensions/schema_dumper.rb, line 422
422:       def dump_constraints
423:         cs = constraints.map do |c|
424:           c = c.dup
425:           type = c.delete(:type)
426:           case type
427:           when :check
428:             raise(Error, "can't dump check/constraint specified with Proc") if c[:check].is_a?(Proc)
429:             name = c.delete(:name)
430:             if !name and c[:check].length == 1 and c[:check].first.is_a?(Hash)
431:               "check #{c[:check].first.inspect[1...-1]}"
432:             else
433:               "#{name ? "constraint #{name.inspect}," : 'check'} #{c[:check].map{|x| x.inspect}.join(', ')}"
434:             end
435:           when :foreign_key
436:             c.delete(:on_delete) if c[:on_delete] == :no_action
437:             c.delete(:on_update) if c[:on_update] == :no_action
438:             c.delete(:deferrable) unless c[:deferrable]
439:             cols = c.delete(:columns)
440:             table = c.delete(:table)
441:             "#{type} #{cols.inspect}, #{table.inspect}#{opts_inspect(c)}"
442:           else
443:             cols = c.delete(:columns)
444:             "#{type} #{cols.inspect}#{opts_inspect(c)}"
445:           end
446:         end
447:         cs.join("\n")
448:       end

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.
  • :ignore_errors - Add the ignore_errors option to the outputted indexes

[Source]

     # File lib/sequel/extensions/schema_dumper.rb, line 457
457:       def dump_indexes(options={})
458:         is = indexes.map do |c|
459:           c = c.dup
460:           cols = c.delete(:columns)
461:           if table = options[:add_index] || options[:drop_index]
462:             "#{options[:drop_index] ? 'drop' : 'add'}_index #{table.inspect}, #{cols.inspect}#{', :ignore_errors=>true' if options[:ignore_errors]}#{opts_inspect(c)}"
463:           else
464:             "index #{cols.inspect}#{opts_inspect(c)}"
465:           end
466:         end
467:         is = is.reverse if options[:drop_index]
468:         is.join("\n")
469:       end

[Validate]