rating-system

问题 I have a table rating with these fields rate_id, game_id, rating, ip . Let suppose that these fields has the following values 1,130,5,155.77.66.55 When a user try to vote for a game, I want with mysql to check if he has already vote for this game so mysql will check if ip and game_id already exists, if they exists then mysql will update the value of rating otherwise will create a new entry. What is a efficient way to do this? 回答1: Create unique index that covers ip + game_id . After that you

问题 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

问题 I've implemented a Star Rating System using this tutorial http://eighty-b.tumblr.com/post/1569674815/creating-an-ajaxified-star-rating-system-in-rails-3 The Ajax works perfectly, until I add the Javascript that Submits the form/saves the data after a given user makes a change. For some reason, it will loop through all the elements on my Index Page, and Submits the correct integer value on the selected object, but then submits a bunch of NIL values on the rest. I only want it to update that

问题 I recently created my own blog using Google's Blogger. When I have completed reading a particular book, I have a Book's I Read Section where I would like to have a static 5 Star Rating System in place of some kind. Perhaps with CSS , I can target each book so I will be able to display from 1 to 5 Stars for the visitor to see. I'm not sure how to edit the CSS of individual blog posts so I can target these specific read books, if that's the best method, and would like any tips in creating an

问题 I would know how to make my rating star always hover depending on the average rating result (random generated number from 1-5 and random generated number from 10-55 for the number of votes)? Can I simulate hover with jQuery on my star? I saw few solutions to similar problems but none used in their css the General Sibling Selector (~). The star hover funcionality must be in pure css. Everything other can be and is in js(jQuery). When the document loads some stars should already be hovering

问题 I was thinking of implementing a thumbs system, but mine would require a registration thus ruling out the possibility of people voting more than once unless they create a new account to do so. So I was wondering about Urban Dictionary's thumb system. How does it work? I would imagine that my IP would be stored in a database, so people would not be able to vote more than once however IPs do change pretty often and especially when you're on an iPhone. Probably a combination of cookies and IP

问题 I am making i site where people can make reviews of movies and when they make the review they need to put a rating to a movie, in a number of 1 to 5. But when it print out on another page I want to print out stars insted of the number 3 for exemple. For now I got this code: StringBuilder movielistSB = new StringBuilder(); foreach (var moviereview in movielistSB) { filmanmeldelserlisteSB.AppendFormat( "<div id='moviereview'><artitcle><h3>{0}</h3>" + "<table><tr><td>ID:</td><td>{1}</td></tr>" +

问题 Having read How Not To Sort By Average Rating I thought I should give it a try. CREATE FUNCTION `mydb`.`LowerBoundWilson95` (pos FLOAT, neg FLOAT) RETURNS FLOAT DETERMINISTIC RETURN IF( pos + neg <= 0, 0, ( (pos + 1.9208) / (pos + neg) - 1.96 * SQRT( (pos * neg) / (pos + neg) + 0.9604 ) / (pos + neg) ) / ( 1 + 3.8416 / (pos + neg) ) ); Running some tests, I discover that objects with pos=0 and neg>0 have very small, but non-negative scores, whereas an object with pos=neg=0 has a score of zero

问题 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

问题 I am able to view 5 asterisks for a rating of 5 for a product, and 4 asterisks for a rating of 4 etc. But what I would like to do is replace the asterisks with an image of a star that I have in my assets/images/ directory, and if a rating is of 4.5 then display half a star. Is there a way of doing this? Below is my current code in application_helper.rb and the view in index.html.erb. application_helper.rb: module ApplicationHelper def render_stars(value) output = '' if (1..5).include?(value