Adds a sum($selector, $field) method to the $pages class. Use for very fast summations across large data sets.

PagesSum Module For ProcessWire

This is a (very) slightly rewritten version of ESRCH's original PagesSum module for Processwire CMS/CMF. You can find the orignal article that introduced it here. The only change introduced is that I've used a closure for the hook function.

Credit


This is ESRCH's work. I've just put it on github to make it a little more accessible (it's buried deep in the Processwire forums.)

Method Of Operation


The module uses ProcessWire's ability to extend its classes by adding new hook functions to them. It adds one method sum to the Pages class. Thus, anywhere you get access to the $pages class, you can get a sum worked out from any subset of pages. The subset is defined using PWs selectors.

The summation is fast as it uses MySQL to sum the underlying data rather than having to iterate over every page in the selected set and pull out a value.

Installation


In the Processwire modules page, click the "New" tab and either enter PagesSum into the box or choose the option to install from a zip file. The zip file to use is the master branch zip from the gihub repository, here.

Example Use In Template File


If you wanted to sum a field called 'costs' across all pages using the 'job' template, you'd simply do this...

<p>Job costs £<?php echo $pages->sum('template=jobs', 'costs'); ?></p>

And if you wanted things a little more formatted, just run that through number_format first...

<p>Job costs £<?php echo number_format($pages->sum('template=jobs', 'costs'), 2); ?></p>

Install and use modules at your own risk. Always have a site and database backup before installing new modules.

Twitter updates

  • ProcessWire 3.0.192 (dev branch) contains 11 issue fixes and 5 pull requests, over 20 commits— More
    7 January 2022
  • ProcessWire 3.0.191 core updates: updates to the installer and the profile exporter module— More
    24 December 2021
  • This week ProcessWire went on a diet, trimming the core size from 15.5 MB down to 7.5 MB by moving optional site profiles into their own GitHub repos— More
    17 December 2021

Latest news

  • ProcessWire Weekly #401
    In the 401st issue of ProcessWire Weekly we'll cover the latest core updates, check out a brand new module called Lister Native Date Format, and more. Read on!
    Weekly.pw / 15 January 2022
  • ProcessWire 3.0.190 core updates
    ProcessWire 3.0.190 has 15 commits relative to 3.0.189 and contains a mixture of issue resolutions and feature additions. This post covers them all, in addition to updates for the PageAutosave and ProFields Table modules.
    Blog / 3 December 2021
  • Subscribe to weekly ProcessWire news

“…building with ProcessWire was a breeze, I really love all the flexibility the system provides. I can’t imagine using any other CMS in the future.” —Thomas Aull