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Nested Sets
Yonder Media
New Member
Posts: 7
9 lata 9 miesiąc temu #666
przez Yonder Media
Nested Sets was created by Yonder Media
Having used Component Creator quite extensively, one of the things I find myself having to make over and over again, are nested set models. For instance, Nested Sets are used in Joomla's native Category component, allowing n-tiered nesting of categories associated with other categories.
In the Table class, this requires changing it from JTable to JTableNested, and including code in the prepareTable function of the model class (an example is shown below:)
Additionally, then, this requires changes to the View classes and markup output, to correctly show entries as being nested within each other. For this, I've borrowed code from Joomla's Category Component to achieve this.
Whilst I can get this all to work, it would be a really cool feature to have this built-in to Component Creator!
In the Table class, this requires changing it from JTable to JTableNested, and including code in the prepareTable function of the model class (an example is shown below:)
protected function prepareTable($table)
{
jimport('joomla.filter.output');
$db = JFactory::getDbo();
// Specify where to insert the new node.
$parent = @$table->parent_id;
if (!empty($parent))
{
$table->setLocation($parent, 'last-child');
}
else
{
$rootId = $table->getRootId();
if ($rootId === false)
{
$db = JFactory::getDbo();
$sql = 'INSERT INTO #__yomo_ussd_article_category'
. ' SET parent_id = 0'
. ', lft = 0'
. ', rgt = 1'
. ', level = 0'
. ', title = '.$db->quote('root')
. ', alias = '.$db->quote('root')
. ', access = 1'
. ', path = '.$db->quote('')
;
$db->setQuery($sql);
$db->query();
$parent = $db->insertid();
$table->setLocation($parent, 'last-child');
}
else
{
$table->setLocation($rootId, 'last-child');
}
}
# Check that the node data is valid.
$table->check();
# Store the node in the database table.
$table->store();
}
Additionally, then, this requires changes to the View classes and markup output, to correctly show entries as being nested within each other. For this, I've borrowed code from Joomla's Category Component to achieve this.
Whilst I can get this all to work, it would be a really cool feature to have this built-in to Component Creator!
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RIP Graphics
New Member
Posts: 16
9 lata 8 miesiąc temu #667
przez RIP Graphics
Replied by RIP Graphics on topic Nested Sets
+1
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Pete
Junior Member
Posts: 27
9 lata 8 miesiąc temu #700
przez Pete
Replied by Pete on topic Nested Sets
+1
Proszę Zaloguj lub Zarejestruj się, aby dołączyć do konwersacji.
Søren Beck Jensen
Administrator
Posts: 81
9 lata 7 miesiąc temu #771
przez Søren Beck Jensen
Søren Beck Jensen
Founder, Component-Creator.com
Replied by Søren Beck Jensen on topic Nested Sets
Please note that this relates only to nested sets of custom tables. You can always use the Joomla Category field and create as many nested categories you would like.
Thanks to Brian Teeman for pointing this out.
Thanks to Brian Teeman for pointing this out.
Søren Beck Jensen
Founder, Component-Creator.com
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Ilya Protasov
New Member
Posts: 9
9 lata 4 miesiąc temu #876
przez Ilya Protasov
Replied by Ilya Protasov on topic Nested Sets
+1
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Jesper
New Member
Posts: 6
9 lata 4 miesiąc temu #883
przez Jesper
Replied by Jesper on topic Nested Sets
+1 as i sit and could use this right now for something i have to build
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