"partial" and "extends" support in Sinatra

[ismasan]

partial() and extends() don't work in Sinatra because the internal method fetch_source() relies on either Rails or Padrino to resolve the path for the views directory. I had to monkey-patch that method in my Sinatra app:

module Rabl
  module Helpers
    def fetch_source(file, options={})
      file_path = Dir[File.join(APP_ROOT, 'views', file + "*.rabl")].first
      File.read(file_path) if file_path
    end
  end
end

.. Where APP_ROOT is a constant I defined in my app.

Is there a better way?

[nesquena]

Yeah you are absolutely right. I never investigated the best way to build the file path for a template in a sinatra app. I know there is a way to get the view_paths in the app with settings.views but I didn't have access to that in the helpers module. I always use RABL alongside Padrino / Rails so it wasn't an issue for me. If anybody has any suggestions or patches, I would be curious.

One option is to support a proc inside rabl configuration:

Rabl.configure do |config|
  config.fetch_source = lambda do |file, options|
    file_path = Dir[File.join(APP_ROOT, 'views', file + "*.rabl")].first
    File.read(file_path) if file_path
  end
end

What do you guys think?

[ismasan]

Maybe just:

Rabl.configure do |config|
    config.views_path = 'my_own_custom_path'
end

[nesquena]

Actually yeah that is much more reasonable, I think that would be the best bet.

[nesquena]

This should be fixed for Sinatra (has been for a while), finally closing.

[delphaber]

Hi. I think this solution does not work no more. :(

NoMethodError: undefined method `views_path=' for #Rabl::Configuration:0xb04dad4

[nesquena]

Not sure you should have to set anything, here's where its calculated: https://github.com/nesquena/rabl/blob/master/lib/rabl/partials.rb#L52

[delphaber]

I'm using subfolders. I've fixed using another tip from another user in this github
Hope this could help someone else :)

views/activities/index.rabl:
collection @activities

extends 'show', {:view_path => 'views/activities/'}

This should load views/activities/show.rabl for each activity in @activities