BetterResponder

Small tweak for rendering decision.

Getting started

How many times you may see in the controller the code like this:

def create
  @post = @conversation.posts.build post_params
  @post.user = current_user
  if @post.save
    redirect_to @conversation, notice: I18n.t(...)
  else
    render :new
  end
end

def update
  if @post.update_attributes
    redirect_to @conversation, notice: I18n.t(...)
  else
    render :edit
  end
end

def destroy
  if @post.destroy
    redirect_to @conversation, notice: I18n.t(...)
  else
    redirect_to @conversation, alert: I18n.t(...)
  end
end

This code is valid but for me it contains some duplication and it needs to refactor.

Installation

Add this line to your application's Gemfile:

gem 'better_responder'

And then execute:

$ bundle

Or install it yourself as:

$ gem install better_responder

Or if you want to stay on the edge:

gem 'better_responder', github: 'sergio1990/better_responder'

Usage

For first you need to initialize Responder object. At this time, I recommend you to do this in Application Controller:

  before_action :create_responder #You must use before_filter for rails < 4

  private

  def create_responder
    @responder ||= BetterResponder::Responder.new(self)
  end

Next, refactor code that was shown earlier:

  def create
    @post = @conversation.posts.new post_params
    @post.user = current_user
    @responder.run @post.save, {redirect_to: @conversation}, {render: :new}
  end

  def update
    @responder.run @post.update_attributes(post_params), {redirect_to: @conversation}, {render: :edit}
  end

  def destroy
    @responder.run @post.destroy, {redirect_to: @conversation}
  end

Now we simplify your code by calling single @responder.run. IMHO this looks small bit better. However, I dont like to manually calling @responder.run each time and this problem I will solve.

Flash messages

For right using flash messages inside Responder you must declare translations accordingly this pattern:

  responder.#{controller_name}.#{action_name}.#{type}

Type is a finite set of [success, fail].

For example:

  ru:
    responder:
      posts:
        destroy:
          success: Your success message
          fail: Your fail message

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request