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require 'active_support/core_ext/module/introspection'
require 'rails/generators/base'
require 'rails/generators/generated_attribute'
module Rails
module Generators
class NamedBase < Base
argument :name, :type => :string
class_option :skip_namespace, :type => :boolean, :default => false,
:desc => "Skip namespace (affects only isolated applications)"
def initialize(args, *options) #:nodoc:
@inside_template = nil
# Unfreeze name in case it's given as a frozen string
args[0] = args[0].dup if args[0].is_a?(String) && args[0].frozen?
super
assign_names!(self.name)
parse_attributes! if respond_to?(:attributes)
end
no_tasks do
def template(source, *args, &block)
inside_template do
super
end
end
end
protected
attr_reader :file_name
alias :singular_name :file_name
# Wrap block with namespace of current application
# if namespace exists and is not skipped
def module_namespacing(&block)
content = capture(&block)
content = wrap_with_namespace(content) if namespaced?
concat(content)
end
def indent(content, multiplier = 2)
spaces = " " * multiplier
content = content.each_line.map {|line| "#{spaces}#{line}" }.join
end
def wrap_with_namespace(content)
content = indent(content).chomp
"module #{namespace.name}\n#{content}\nend\n"
end
def inside_template
@inside_template = true
yield
ensure
@inside_template = false
end
def inside_template?
@inside_template
end
def namespace
Rails::Generators.namespace
end
def namespaced?
!options[:skip_namespace] && namespace
end
def file_path
@file_path ||= (class_path + [file_name]).join('/')
end
def class_path
inside_template? || !namespaced? ? regular_class_path : namespaced_class_path
end
def regular_class_path
@class_path
end
def namespaced_class_path
@namespaced_class_path ||= begin
namespace_path = namespace.name.split("::").map {|m| m.underscore }
namespace_path + @class_path
end
end
def class_name
(class_path + [file_name]).map!{ |m| m.camelize }.join('::')
end
def human_name
@human_name ||= singular_name.humanize
end
def plural_name
@plural_name ||= singular_name.pluralize
end
def i18n_scope
@i18n_scope ||= file_path.tr('/', '.')
end
def table_name
@table_name ||= begin
base = pluralize_table_names? ? plural_name : singular_name
(class_path + [base]).join('_')
end
end
def uncountable?
singular_name == plural_name
end
def index_helper
uncountable? ? "#{plural_table_name}_index" : plural_table_name
end
def singular_table_name
@singular_table_name ||= (pluralize_table_names? ? table_name.singularize : table_name)
end
def plural_table_name
@plural_table_name ||= (pluralize_table_names? ? table_name : table_name.pluralize)
end
def plural_file_name
@plural_file_name ||= file_name.pluralize
end
def route_url
@route_url ||= class_path.collect{|dname| "/" + dname }.join('') + "/" + plural_file_name
end
# Tries to retrieve the application name or simple return application.
def application_name
if defined?(Rails) && Rails.application
Rails.application.class.name.split('::').first.underscore
else
"application"
end
end
def assign_names!(name) #:nodoc:
@class_path = name.include?('/') ? name.split('/') : name.split('::')
@class_path.map! { |m| m.underscore }
@file_name = @class_path.pop
end
# Convert attributes array into GeneratedAttribute objects.
def parse_attributes! #:nodoc:
self.attributes = (attributes || []).map do |attr|
Rails::Generators::GeneratedAttribute.parse(attr)
end
end
def pluralize_table_names?
!defined?(ActiveRecord::Base) || ActiveRecord::Base.pluralize_table_names
end
# Add a class collisions name to be checked on class initialization. You
# can supply a hash with a :prefix or :suffix to be tested.
#
# ==== Examples
#
# check_class_collision :suffix => "Observer"
#
# If the generator is invoked with class name Admin, it will check for
# the presence of "AdminObserver".
#
def self.check_class_collision(options={})
define_method :check_class_collision do
name = if self.respond_to?(:controller_class_name) # for ScaffoldBase
controller_class_name
else
class_name
end
class_collisions "#{options[:prefix]}#{name}#{options[:suffix]}"
end
end
end
end
end
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