RepeaterDepthHelper by Robin S

Enforces some depth rules for Repeater fields on save, and provides a helper method that returns a nested depth structure for a Repeater field value.

Repeater Depth Helper

A module for ProcessWire CMS/CMF. This module does two things relating to Repeater fields that have the "Item depth" option enabled:

  1. It enforces some depth rules for Repeater fields on save. Those rules are:

    1. The first item must have a depth of zero.
    2. Each item depth must not be more than one greater than previous item depth.
  2. It provides a RepeaterPageArray::getDepthStructure helper method that returns a nested depth structure for a Repeater field value.

Helper method


The module adds a RepeaterPageArray::getDepthStructure method that returns a multi-dimensional array where the key is the page ID and the value is an array of nested "child" items, or null if there are no nested children.

Example

rdh-tracy

The module doesn't make any assumptions about how you might want to use the depth structure array, but here is a way you might use it to output a nested unordered list.

// Output a nested unordered list from a depth structure array
function outputNestedList($depth_structure, $repeater_items) {
    $out = "<ul>";
    foreach($depth_structure as $page_id => $nested_children) {
        $out .= "<li>" . $repeater_items->get("id=$page_id")->title;
        // Go recursive if there are nested children
        if(is_array($nested_children)) $out .= outputNestedList($nested_children, $repeater_items);
        $out .= "</li>";
    }
    $out .= "</ul>";
    return $out;
}

$repeater_items = $page->my_repeater;
$depth_structure = $repeater_items->getDepthStructure();
echo outputNestedList($depth_structure, $repeater_items);

rdh-list

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

Twitter updates

  • ProcessWire 3.0.187: This week we have some very useful new additions to both the core Repeater Fieldtype and the ProFields Repeater Matrix Fieldtype. This post covers all the details along with a couple of brief demonstration videos— More
    22 October 2021
  • ProcessWire 3.0.185 (dev) core updates, plus new Session Allow module— More
    17 September 2021
  • Three new ProcessWire Textformatter modules: Find/Replace, Markdown in Markup, and Emoji— More
    3 September 2021

Latest news

  • ProcessWire Weekly #389
    The 389th issue of ProcessWire Weekly we'll check out the latest core updates, introduce the Session Viewer module, and more. Read on!
    Weekly.pw / 23 October 2021
  • New Repeater and Repeater Matrix features
    This week we have some very useful new additions to both the core Repeater Fieldtype and the ProFields Repeater Matrix Fieldtype. This post covers all the details along with a couple of brief demonstration videos. 
    Blog / 22 October 2021
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“Indeed, if ProcessWire can be considered as a CMS in its own right, it also offers all the advantages of a CMF (Content Management Framework). Unlike other solutions, the programmer is not forced to follow the proposed model and can integrate his/her ways of doing things.” —Guy Verville, Spiria Digital Inc.