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require 'thor/actions'
module Rails
module Generators
module Actions
class CreateMigration < Thor::Actions::CreateFile
def migration_dir
File.dirname(@destination)
end
def migration_file_name
@base.migration_file_name
end
def identical?
exists? && File.binread(existing_migration) == render
end
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
def relative_existing_migration
base.relative_to_original_destination_root(existing_migration)
end
def existing_migration
@existing_migration ||= begin
@base.class.migration_exists?(migration_dir, migration_file_name) ||
File.exist?(@destination) && @destination
end
end
alias :exists? :existing_migration
protected
def on_conflict_behavior(&block)
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)
block.call
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 file."
end
end
def say_status(status, color, message = relative_destination)
base.shell.say_status(status, message, color) if config[:verbose]
end
end
end
end
end
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