一个视图层的gem: apotomo ( rubygem apotomo for Rails. )

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好吧,我失败了。。。 没有成功的跑起来,虽然经过查看源代码等等修改,也还是一直有失败消息。我怀疑这个GEM 不兼容 3.2.11 ,或者作者已经停止维护了(上一次提交代码是2个月前,再一次是8个月前,还有20+ issue没有 解决, 好多pull request 没有处理) (OK, I admit that I failed to manage this to work. I don't think this gem is compatible with Rails 3.2.11, and its last commit is 2 month ago, last but 1 commit is 8 months ago, and a dozen issues not fixed, many pull requests not processed. )

这几天在调试 rubygem for rails (including views/controllers/... ) , 所以google到了apotomo, 记录一下。(these days I am creating a rails engine gem, so I found apotomo, a rails view components framework ) 

1. edit Gemfile:  gem 'apotomo'

2.  假设已经存在一个 模块:post,   它"has_many comments", 那么就需要:  run the generation command    (assuming we already have a 'post' module which has_many 'comments' ) 

sg552@youku:/sg552/workspace/test-cell$ bundle exec rails generate apotomo:widget Comments display write -e haml
      invoke  haml
      create    app/widgets/comments/display.html.haml
      create    app/widgets/comments/write.html.haml
      invoke  test_unit
      create    test/widgets/comments_widget_test.rb
      create  app/widgets/comments_widget.rb

3. in post_controller:

class PostsController < ApplicationController
  include Apotomo::Rails::ControllerMethods

  has_widgets do |root|
    root << widget(:comments, :post => @post)
  end
  def index 
    #...
  end
end

4. in app/views/posts/show.html.haml

%h1 @post.title

%p
  @post.body

%p
  = render_widget :comments

5. 实现这个 widget (一个迷你型的controller )

class CommentsWidget < Apotomo::Widget
  responds_to_event :post

  def display(args)
    @comments = args[:post].comments
    render
  end 
  def post(evt)
    @comment = Comment.new(:book_id => evt[:book_id])
    @comment.update_attributes evt[:comment]  # a bit like params[].
    update :state => :display
  end
end

6. 最后, display.html.haml 中:

= widget_div do
  %ul
    - for c in @comments
      %li c.text

  - form_for :comment, @comment, :url => url_for_event(:post), :remote => true do |f|
    = f.error_messages
    = f.text_field :text

    = submit_tag "Don't be shy, comment!"

好吧,我失败了。。。 没有成功的跑起来,虽然经过查看源代码等等修改,也还是一直有失败消息。我怀疑这个GEM 不兼容 3.2.11 ,或者作者已经停止维护了(上一次提交代码是2个月前,再一次是8个月前,还有20+ issue没有 解决, 好多pull request 没有处理)

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