Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I am writing a web app on google app engine with python. I am using jinja2 as a templating engine.
I currently have it set up so that users can upvote and downvote posts but right now they can vote on them as many times as they would like. I simply have the vote record in a database and then calculate it right after that. How can I efficiently prevent users from casting multiple votes?
Store the voting user with the vote, and check for an existing vote by the current user, using your database.
You can perform the check either before you serve the page (and so disable your voting buttons), or when you get the vote attempt (and show some kind of message). You should probably write code to handle both scenarios if the voting really matters to you.