Module: RailsAssist::Migration

Includes:
Rails::Generators::Migration, FileNameHelper
Defined in:
lib/migration_assist/class_methods.rb,
lib/migration_assist/namespaces.rb,
lib/migration_assist/implementation.rb,
lib/migration_assist/helper/file_name.rb

Overview

NOTE: Alternative to use this helper is to inherit from ActiveRecord::Generators::Base which provides the #next_migration_number class method that lets #migration_template work as expected

Defined Under Namespace

Modules: ClassMethods, FileNameHelper

Class Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from FileNameHelper

#artifact_path, #db_dir, #existing_file_name, #find_migration, #make_file_name, #migration_dir, #migration_file_name, #root_dir, #type_postfix

Class Attribute Details

.orm ⇒ Object

Returns the value of attribute orm.



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# File 'lib/migration_assist/class_methods.rb', line 8

def orm
  @orm
end

.rails_root_dir ⇒ Object

Returns the value of attribute rails_root_dir.



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# File 'lib/migration_assist/class_methods.rb', line 7

def rails_root_dir
  @rails_root_dir
end

Class Method Details

.included(base) ⇒ Object

:nodoc:



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# File 'lib/migration_assist/class_methods.rb', line 11

def self.included(base) #:nodoc: 
  base.extend ClassMethods  
end

Instance Method Details

#latest_migration_file(dir, name) ⇒ Object 



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# File 'lib/migration_assist/implementation.rb', line 31

def latest_migration_file dir, name
  self.class.latest_migration_file dir, name
end

#migration(name, template_name = nil) ⇒ Object 



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# File 'lib/migration_assist/implementation.rb', line 35

def migration name, template_name=nil
  migration_template("#{template_name || name}.erb", migration_file_name(name))
end

#next_migration_number(dirname) ⇒ Object

:nodoc:



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# File 'lib/migration_assist/class_methods.rb', line 15

def next_migration_number(dirname) #:nodoc:
  orm = RailsAssist::Migration.orm || Rails.configuration.generators.options[:rails][:orm]
  require "rails/generators/#{orm}"
  "#{orm.to_s.camelize}::Generators::Base".constantize.next_migration_number(dirname)
rescue
  raise NotImplementedError
end

#reverse_class_names!(migration_path) ⇒ Object 



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# File 'lib/migration_assist/implementation.rb', line 18

def reverse_class_names! migration_path
  # Change class name
  gsub_file migration_path, /class Add/, 'class Remove'
  gsub_file migration_path, /class Create/, 'class Drop'
end

#reverse_migration!(migration_path) ⇒ Object 



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# File 'lib/migration_assist/implementation.rb', line 13

def reverse_migration! migration_path
  reverse_class_names! migration_path        
  reverse_up_down_methods! migration_path
end

#reverse_migration_name(name) ⇒ Object 



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# File 'lib/migration_assist/implementation.rb', line 9

def reverse_migration_name name
  name.gsub(/^add_/, 'remove_').gsub(/^create_/, 'drop_')
end

#reverse_up_down_methods!(migration_path) ⇒ Object 



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# File 'lib/migration_assist/implementation.rb', line 24

def reverse_up_down_methods! migration_path
  # swap up and down methods
  gsub_file migration_path, /up/, 'dwn'
  gsub_file migration_path, /down/, 'up'
  gsub_file migration_path, /dwn/, 'down'        
end