Acts As Rateable Plugin

Anand

Hi

I used the rateable plugin as well. Many thanks.

Question on the .rating method. How is the performance when you have hundreds of ratings to calculate the average? Any tips on how to make it higher performance?

anand

Sean

I can’t seem to get this to work properly, it’s the first plugin I’ve tried to install so I think my mistake might be something simple I overlooked. Whenever I add “acts_as_rateable” to my story model I get the following error on any action that uses the story model (which is just about all of them): “undefined local variable or method `acts_as_rateable’ for Story:Class”. I installed the plugin and it is present inside the vendor/plugins directory and I created the migration and ran rake on it. If I had to guess it seems like rails isn’t finding the plugin. Is there something else I need to do?

Daniel Fischer

If you wouldn’t mind TechKnow, could you give me an example of a functionality of how I could have the numbers 1..5 or maybe a dropdown to send to a picture for e.g? regarding view/controller programming?

So far I thought of something like this:

def rate
@picture = Picture.find(params[:id])
@picture.add_rating Rating.new(:rating => params[:rating])
end

but I am not really sure what to do in the view, or where to go/modify from here.

Thanks!

TechKnow

@Daniel – Thanks for your comments. Here are three tutorials you might like… Rails 4-State Ajax & CSS Star Rating by Igvita. Rails Ajax Rating System by Naffis. CSS Star Rating Part Deux by Komodo Media.

TechKnow

@Shawn – If you want to have a /- vote like digg or reddit then you can use Acts as Voteable. That might be just what you need.

Ivan Storck

Here’s the SQL I used, my things that are rateable are called “Writings”

SELECT
  writings.id, writings.title, writings.excerpt, writings.description,
  writings.body, writings.created_on, writings.updated_on,
  writings.created_by, writings.updated_by, writings.featured,
  writings.views, avg(rating) AS avg_rating
FROM
  writings
LEFT JOIN ratings ON ratings.rateable_id = writings.id
GROUP BY rateable_id
ORDER BY avg_rating DESC

David Lowenfels

Anand:
The performance of the average rating calculation can be improved greatly by using SQL instead of ruby.

# Helper method that returns the average rating
#
def rating
  Rating.average( :rating, :conditions => {
    :rateable_id => self.id,
    :rateable_type => self.class.name
  })
end

Seth:
use the find_ratings_by_user method

Dom

Hi, I’m getting the following error when trying to use this plugin with a model in rails 2.0.1:

ArgumentError in MediaController#articles

The :dependent option expects either :destroy, :delete_all, or :nullify (true)

My model is Article, it is currently using the following plugins:
has_self_referential_many_to_many :related
acts_as_taggable
acts_as_commentable
acts_as_rateable

If I comment out the first four plugins and leave rateable in, I still get the error. It’s currently breaking on this line:

Library/Ruby/Gems/1.8/gems/activerecord-2.0.1/lib/active_record/associations.rb:1149:in `configure_dependency_for_has_many’

Can you help?

TechKnow

@Lukas, @Dom – Thanks for the comment. I have update the plugin accordingly.