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Calculations

Project has been accepted and we'll invest significant time on this in coming weeks / months Marc Laporte . What is currently called Advanced Rating syntax should be renamed to Tiki Calculations which can be used all over Tiki, including advanced ratings and the Mathematical Calculation Tracker Field


This page is to brainstorm and plan to make Tiki better at calculations. It should be possible for any data in Tiki to be used for calculations and for the results to be used anywhere in Tiki, to do all kinds of useful things: alerts, reports, etc.

Overview

Why is it important to calculate values server-side?

For Spreadsheet, PivotTable, TableSorter and WickedGrid, calculations are done client-side (by the user's browser) and thus, we can't use formulae the same way we use Mathematical Calculation Tracker Field calculations. This would be needed for

  • Unattended operations. Ex.: trigger actions via PluginListExecute to send alerts (based on calculations) or reports (with results of calculations)
  • For security reasons: imagine we are using these formulae to manage complex tax scenarios in the shopping cart. We don't want a clever user to Greasemonkey the Tiki Shopping Cart into giving them a special price. Same thing for form validation.
    • It could be checked against server side value if the special price is valid but I understand your concern luciash d' being

Questions

  • Should we be looking into a way to do Server-side JavaScript?
    • Either JS via PHP: Server-side JavaScript
      These are just ways of coding in js instead of coding in php. There is nothing here which is easier to do in js than in php except if you haven't learnt php Jean-Marc Libs
    • Or via PhantomJS which will now be easy to deploy via Composer Web Installer
    • Yes, why not? :-) luciash d' being
      Isn't PhantomJS the opposite of what we want to achieve? PhantomJS is for automated regression testing of web-based software (very nice). It is an emulation of what a user can do. If we double check what the user does while he is doing it using PhantomJS, I believe it will mess whith the user's session and actions, like doubling the orders, etc Jean-Marc Libs

Ideas

  • Should Advanced Ratings be added to PluginList?
  • Should we have a new concept of value which can be set? Perhaps PluginValue which can be set, updated, emptied, used, etc.
  • Could be useful for Stats (e.g. how many times page was edited, most "time consuming" page, calculate man-hours, etc.) and Action Reports? luciash d' being

Opinions

  • I like spreadsheets because it's easy to visualize the calculations. I'd like diverse values all over Tiki to be in the spreadsheet, and from here, to use the spreadsheet formulae and then, for these resulting values to make their way into wiki pages, reports, alerts, etc. and in some cases into other spreadsheets :-) Marc Laporte

Code and libraries


Keywords

The following is a list of keywords that should serve as hubs for navigation within the Tiki development and should correspond to documentation keywords.

Each feature in Tiki has a wiki page which regroups all the bugs, requests for enhancements, etc. It is somewhat a form of wiki-based project management. You can also express your interest in a feature by adding it to your profile. You can also try out the Dynamic filter.

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