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Class: Rails::Generators::Actions::CreateMigration

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, Thor::Actions::CreateFile
Instance Chain:
self, Thor::Actions::CreateFile
Inherits: Thor::Actions::CreateFile
  • ::Object
Defined in: railties/lib/rails/generators/actions/create_migration.rb

Instance Attribute Summary

Instance Method Summary

Instance Attribute Details

#exists? (readonly)

Alias for #existing_migration.

[ GitHub ] 

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 45



alias :exists? :existing_migration


  








  

    #identical?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 18



def identical?
  exists? && File.binread(existing_migration) == render
end


  







Instance Method Details



  

    #existing_migration  
    Also known as: #exists?
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 41



def existing_migration
  @existing_migration ||= @base.class.migration_exists?(migration_dir, migration_file_name) ||
    File.exist?(@destination) && @destination
end


  








  

    #invoke!  
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 22



def invoke!
  return super if pretend?

  invoked_file = super
  File.exist?(@destination) ? invoked_file : relative_existing_migration
end


  








  

    #migration_dir  
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 10



def migration_dir
  File.dirname(@destination)
end


  








  

    #migration_file_name  
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 14



def migration_file_name
  @base.migration_file_name
end


  








  

    #on_conflict_behavior   (private)
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 48



def on_conflict_behavior # :doc:
  options = base.options.merge(config)
  if identical?
    say_status :identical, :blue, relative_existing_migration
  elsif options[:force]
    say_status :remove, :green, relative_existing_migration
    say_status :create, :green
    unless pretend?
      ::FileUtils.rm_rf(existing_migration)
      yield
    end
  elsif options[:skip]
    say_status :skip, :yellow
  else
    say_status :conflict, :red
    raise Error, "Another migration is already named #{migration_file_name}: " \
      "#{existing_migration}. Use --force to replace this migration " \
      "or --skip to ignore conflicted file."
  end
end


  








  

    #relative_existing_migration  
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 37



def relative_existing_migration
  base.relative_to_original_destination_root(existing_migration)
end


  








  

    #revoke!  
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 29



def revoke!
  say_destination = exists? ? relative_existing_migration : relative_destination
  say_status :remove, :red, say_destination
  return unless exists?
  ::FileUtils.rm_rf(existing_migration) unless pretend?
  existing_migration
end


  








  

    #say_status(status, color, message = relative_destination)   (private)
  

  [ GitHub ]


  

  


# File 'railties/lib/rails/generators/actions/create_migration.rb', line 69



def say_status(status, color, message = relative_destination) # :doc:
  base.shell.say_status(status, message, color) if config[:verbose]
end