I'm looking for advice on how to make a survey for my Joomla production (3.6.4) site.
A key requirement is to restrict respondents to only taking the survey once (i.e. preventing 'ballot-box' stuffing).
I looked in Joomla Extension Directory, but I haven't found a solution for my functionality, so I'm thinking about developing a simple plugin or module to integrate my form with tokens.
I came to the conclusion that the best solution to protect against re-examination would be token codes generated and delivered earlier for my respondents.
I thought about three solutions:
- PHP code for checking simple txt file if code exist, and erase it after sending answer.
- Create a table in MySQL for codes and checking if code was used.
- Use something similar to captcha.
This will be my first deeper programming in Joomla so any advice or solution will be very helpful for me.
Thanks for your attention.