We're doing a massive import of categories from another CMS, and using the below code to create the categories:

$basePath = JPATH_ADMINISTRATOR.'/components/com_categories';
require_once $basePath.'/models/category.php';
$config  = array('table_path' => $basePath.'/tables');
$catmodel = new CategoriesModelCategory($config);
// Populate the params array with values to save, for rules:
$params['rules'] = array(
    'core.edit.state' => array(),
    'core.edit.delete' => array(),
    'core.edit.edit' => array(),
    'core.edit.state' => array(),
    'core.edit.edit.own' => array(1=>true)
    return false;

This all works marvelously, creating the category, with the Permissions as expected.

However, examining other categories that have been manually added along the way, all with the same parent_id ancestry, I see two different varieties of the rules column in the #__assets table.

#__assets rules Example #1 (as created by the above code, and some with Admin Category Manager, in use by many categories)


#__assets rules Example #2 (as created by the Admin Category Manager, and in use by many categories)


When I view them in the Category manager, both categories appear to have the same permissions - inheriting everything except "Edit Own" being set to "Allowed". So, the real question is two-fold:

  1. What are the differences between these two sets of rules
  2. Is the method we're using (yielding example #1) incomplete in anyway

1 Answer 1


The rules column in the assets table define the custom rules for each item individually.

The default value of the field would be:


Which means that all permission rules for this item inherit their permissions from the default global configuration settings as specified for each group.

Otherwise, there are permissions overrides by item:


Explanation of the what a value of core.create":{"6":1,"3":0} means:

For this item the Group ID 6 has Create permissions set to "Allowed" (1), while the Group ID 3 has Create permissions set to "Denied" (0). (These permissions override the default global permissions, and all other permissions for the rest groups are inherited.)

Hope this helps...

  • It definately helped....thanks SO much! Not many docs on the intricacies of the ACL that I could find.
    – GDP
    Sep 19, 2014 at 12:56

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