Class: Erd::Migrator

Inherits:
Object
  • Object
show all
Defined in:
lib/erd/migrator.rb

Class Method Summary collapse

Class Method Details

.execute_generate_migration(name, options = nil) ⇒ Object

runs ‘rails g migration [name]`

Returns:

  • generated migration filename



52
53
54
55
 
# File 'lib/erd/migrator.rb', line 52

def execute_generate_migration(name, options = nil)
  result = execute_generator 'migration', name, options
  result.last.last
end

.execute_generate_model(name, options = nil) ⇒ Object

runs ‘rails g model [name]`

Returns:

  • generated migration filename



45
46
47
48
 
# File 'lib/erd/migrator.rb', line 45

def execute_generate_model(name, options = nil)
  result = execute_generator 'model', name, options
  result.flatten.grep(%r(/db/migrate/.*\.rb))
end

.run_migrations(migrations) ⇒ Object

‘rake db:migrate` example:

run_migrations up: '/Users/a_matsuda/my_app/db/migrate/20120423023323_create_products.rb'
run_migrations up: '20120512020202', down: ...
run_migrations up: ['20120512020202', '20120609010203', ...]



28
29
30
31
32
33
34
35
36
37
38
39
40
41
 
# File 'lib/erd/migrator.rb', line 28

def run_migrations(migrations)
  migrations.each do |direction, version_or_filenames|
    Array.wrap(version_or_filenames).each do |version_or_filename|
      /^(?<version>\d{3,})/ =~ File.basename(version_or_filename)
      ActiveRecord::Migrator.run(direction, ActiveRecord::Migrator.migrations_path, version.to_i)
    end if version_or_filenames
  end
  if ActiveRecord::Base.schema_format == :ruby
    File.open(ENV['SCHEMA'] || "#{Rails.root}/db/schema.rb", 'w') do |file|
      ActiveRecord::SchemaDumper.dump(ActiveRecord::Base.connection, file)
    end
  end
  #TODO unload migraion classes
end

.status ⇒ Object 



8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/erd/migrator.rb', line 8

def status
  migrated_versions = ActiveRecord::Base.connection.select_values("SELECT version FROM #{ActiveRecord::Migrator.schema_migrations_table_name}").map {|v| '%.3d' % v}
  migrations = []
  ActiveRecord::Migrator.migrations_paths.each do |path|
    Dir.foreach(Rails.root.join(path)) do |file|
      if (version_and_name = /^(\d{3,})_(.+)\.rb$/.match(file))
        status = migrated_versions.delete(version_and_name[1]) ? 'up' : 'down'
        migrations << {:status => status, :version => version_and_name[1], :name => version_and_name[2], :filename => file}
      end
    end
  end
  migrations += migrated_versions.map {|v| {:status => 'up', :version => v, :name => '*** NO FILE ***', :filename => v}}
  migrations.sort_by {|m| m[:version]}
end