class ScaffoldingSandbox include ActionView::Helpers::ActiveRecordHelper attr_accessor :form_action, :singular_name, :suffix, :model_instance def sandbox_binding binding end def default_input_block Proc.new { |record, column| "


\n#{input(record, column.name)}

\n" } end end class ActionView::Helpers::InstanceTag def to_input_field_tag(field_type, options={}) field_meth = "#{field_type}_field" "<%= #{field_meth} '#{@object_name}', '#{@method_name}' #{options.empty? ? '' : ', '+options.inspect} %>" end def to_text_area_tag(options = {}) "<%= text_area '#{@object_name}', '#{@method_name}' #{options.empty? ? '' : ', '+ options.inspect} %>" end def to_date_select_tag(options = {}) "<%= date_select '#{@object_name}', '#{@method_name}' #{options.empty? ? '' : ', '+ options.inspect} %>" end def to_datetime_select_tag(options = {}) "<%= datetime_select '#{@object_name}', '#{@method_name}' #{options.empty? ? '' : ', '+ options.inspect} %>" end def to_time_select_tag(options = {}) "<%= time_select '#{@object_name}', '#{@method_name}' #{options.empty? ? '' : ', '+ options.inspect} %>" end end class ScaffoldGenerator < Rails::Generator::NamedBase attr_reader :controller_name, :controller_class_path, :controller_file_path, :controller_class_nesting, :controller_class_nesting_depth, :controller_class_name, :controller_singular_name, :controller_plural_name alias_method :controller_file_name, :controller_singular_name alias_method :controller_table_name, :controller_plural_name def initialize(runtime_args, runtime_options = {}) super # Take controller name from the next argument. Default to the pluralized model name. @controller_name = args.shift @controller_name ||= ActiveRecord::Base.pluralize_table_names ? @name.pluralize : @name base_name, @controller_class_path, @controller_file_path, @controller_class_nesting, @controller_class_nesting_depth = extract_modules(@controller_name) @controller_class_name_without_nesting, @controller_singular_name, @controller_plural_name = inflect_names(base_name) if @controller_class_nesting.empty? @controller_class_name = @controller_class_name_without_nesting else @controller_class_name = "#{@controller_class_nesting}::#{@controller_class_name_without_nesting}" end end def manifest record do |m| # Check for class naming collisions. m.class_collisions controller_class_path, "#{controller_class_name}Controller", "#{controller_class_name}ControllerTest", "#{controller_class_name}Helper" # Controller, helper, views, and test directories. m.directory File.join('app/controllers', controller_class_path) m.directory File.join('app/helpers', controller_class_path) m.directory File.join('app/views', controller_class_path, controller_file_name) m.directory File.join('app/views/layouts', controller_class_path) m.directory File.join('test/functional', controller_class_path) # Depend on model generator but skip if the model exists. m.dependency 'model', [singular_name], :collision => :skip, :skip_migration => true # Scaffolded forms. m.complex_template "form.rhtml", File.join('app/views', controller_class_path, controller_file_name, "_form.rhtml"), :insert => 'form_scaffolding.rhtml', :sandbox => lambda { create_sandbox }, :begin_mark => 'form', :end_mark => 'eoform', :mark_id => singular_name # Scaffolded views. scaffold_views.each do |action| m.template "view_#{action}.rhtml", File.join('app/views', controller_class_path, controller_file_name, "#{action}.rhtml"), :assigns => { :action => action } end # Controller class, functional test, helper, and views. m.template 'controller.rb', File.join('app/controllers', controller_class_path, "#{controller_file_name}_controller.rb") m.template 'functional_test.rb', File.join('test/functional', controller_class_path, "#{controller_file_name}_controller_test.rb") m.template 'helper.rb', File.join('app/helpers', controller_class_path, "#{controller_file_name}_helper.rb") # Layout and stylesheet. m.template 'layout.rhtml', File.join('app/views/layouts', controller_class_path, "#{controller_file_name}.rhtml") m.template 'style.css', 'public/stylesheets/scaffold.css' # Unscaffolded views. unscaffolded_actions.each do |action| path = File.join('app/views', controller_class_path, controller_file_name, "#{action}.rhtml") m.template "controller:view.rhtml", path, :assigns => { :action => action, :path => path} end end end protected # Override with your own usage banner. def banner "Usage: #{$0} scaffold ModelName [ControllerName] [action, ...]" end def scaffold_views %w(list show new edit) end def scaffold_actions scaffold_views + %w(index create update destroy) end def model_name class_name.demodulize end def unscaffolded_actions args - scaffold_actions end def suffix "_#{singular_name}" if options[:suffix] end def create_sandbox sandbox = ScaffoldingSandbox.new sandbox.singular_name = singular_name begin sandbox.model_instance = model_instance sandbox.instance_variable_set("@#{singular_name}", sandbox.model_instance) rescue ActiveRecord::StatementInvalid => e logger.error "Before updating scaffolding from new DB schema, try creating a table for your model (#{class_name}) named #{class_name.tableize}." raise SystemExit end sandbox.suffix = suffix sandbox end def model_instance base = class_nesting.split('::').inject(Object) do |base, nested| break base.const_get(nested) if base.const_defined?(nested) base.const_set(nested, Module.new) end unless base.const_defined?(@class_name_without_nesting) base.const_set(@class_name_without_nesting, Class.new(ActiveRecord::Base)) end class_name.constantize.new end end