rating-system

The use case Currently, I am trying to build a page where users can vote on content ( up/downvote , similar to the function on the StackExchange network). But the users shouldn't need to register themselves to vote on content. So it would be a kind of "anonymous" voting page . It is built with Laravel5 and uses a MySQL database to store the votes. The user sessions are stored in flat-files, but can be also stored in a database table (L5 is quite flexible here). The problem How to make it secure? . I am storing restrictions and already voted contents in the user sessions, e.g. when the user has

I'm trying to add a simple Star Rating system for my app having taken this tutorial for an example. I have User, Hotel and Rating models. Dependencies are: (rating.rb) belongs_to :user belongs_to :hotel (hotel.rb) & (user.rb) has_many :ratings And with the following code in hotel view I get this error: NameError in Hotels#show undefined local variable or method `user' for Class... (in the line with <%= form_for ...) Hotel view (show.html.erb): <% form_id = "hotel_#{@hotel.id}_rating" %> <% if signed_in? %> <!-- To avoid throwing an exception if no user is signed in --> <% user_id = current

I'm trying to apply the Bayesian rating formula , but if I rate 1 out of 5 thousand of hundreds, the final rating is greater than 5. For example, a given item has no votes and after voting 170,000 times with 1 star, its final rating is 5.23. If I rate 100, it has a normal value. Here is what I have in PHP. <?php // these values came from DB $total_votes = 2936; // total of votes for all items $total_rating = 582.955; // sum of all ratings $total_items = 202; // now the specific item, it has no votes yet $this_num_votes = 0; $this_score = 0; $this_rating = 0; // simulating a lot of votes with 1