Class: DeclareSchema::MigrationGenerator

Inherits:
Rails::Generators::Base
  • Object
show all
Includes:
Support::ThorShell, Rails::Generators::Migration
Defined in:
lib/generators/declare_schema/migration/migration_generator.rb

Constant Summary

Constants included from Support::ThorShell

Support::ThorShell::PREFIX

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details



26
27
28
 
# File 'lib/generators/declare_schema/migration/migration_generator.rb', line 26

def banner
  "rails generate declare_schema:migration #{arguments.map(&:usage).join(' ')} [options]"
end

.next_migration_number(dirname) ⇒ Object

the Rails::Generators::Migration.next_migration_number gives a NotImplementedError in Rails 3.0.0.beta4, so we need to implement the logic of ActiveRecord. For other ORMs we will wait for the rails implementation see groups.google.com/group/rubyonrails-talk/browse_thread/thread/a507ce419076cda2



22
23
24
 
# File 'lib/generators/declare_schema/migration/migration_generator.rb', line 22

def next_migration_number(dirname)
  ActiveRecord::Generators::Base.next_migration_number(dirname)
end

Instance Method Details

#migrate ⇒ Object 



51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
 
# File 'lib/generators/declare_schema/migration/migration_generator.rb', line 51

def migrate
  return if migrations_pending?

  generator = Generators::DeclareSchema::Migration::Migrator.new(->(c, d, k, p) { extract_renames!(c, d, k, p) })
  up, down = generator.generate

  if up.blank?
    say "Database and models match -- nothing to change"
    return
  end

  say "\n---------- Up Migration ----------"
  say up
  say "----------------------------------"

  say "\n---------- Down Migration --------"
  say down
  say "----------------------------------"

  action = options[:generate] && 'g' ||
           options[:migrate] && 'm' ||
           choose("\nWhat now: [g]enerate migration, generate and [m]igrate now or [c]ancel?", /^(g|m|c)$/)

  if action != 'c'
    if name.blank? && !options[:default_name]
      final_migration_name = choose("\nMigration filename: [<enter>=#{migration_name}|<custom_name>]:", /^[a-z0-9_ ]*$/, migration_name).strip.gsub(' ', '_')
    end
    final_migration_name = migration_name if final_migration_name.blank?

    up.gsub!("\n", "\n    ")
    up.gsub!(/ +\n/, "\n")
    down.gsub!("\n", "\n    ")
    down.gsub!(/ +\n/, "\n")

    @up = up
    @down = down
    @migration_class_name = final_migration_name.camelize

    migration_template('migration.rb.erb', "db/migrate/#{final_migration_name.underscore}.rb")
    if action == 'm'
      case Rails::VERSION::MAJOR
      when 4
        rake('db:migrate')
      else
        rails_command('db:migrate')
      end
    end
  end
rescue ::DeclareSchema::Model::FieldSpec::UnknownSqlTypeError => ex
  say "Invalid field type: #{ex}"
end