37 lines
1.2 KiB
PHP
37 lines
1.2 KiB
PHP
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The nested implementation can be configured to allow your table to have multiple root nodes, and therefore multiple trees within the same table.
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The example below shows how to setup and use multiple roots based upon the set up above:
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<code type="php">
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//use these options in the setTableDefinition
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$options = array('hasManyRoots' => true, // enable many roots
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'rootColumnName' => 'root_id'); // set root column name, defaults to 'root_id'
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// To create new root nodes, if you have manually set the root_id, then it will be used
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// otherwise it will automatically use the next available root id
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$root = new Menu();
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$root->set('name', 'root');
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// insert first root, will auto be assigned root_id = 1
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$manager->getTable('Menu')->getTree()->createRoot($root);
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$another_root = new Menu();
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$another_root->set('name', 'another root');
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// insert another root, will auto be assigned root_id = 2
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$manager->getTable('Menu')->getTree()->createRoot($another_root);
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// fetching a specifc root
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$root = $manager->getTable('Menu')->getTree()->fetchRoot(1);
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$another_root = $manager->getTable('Menu')->getTree()->fetchRoot(2);
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// fetching all roots
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$roots = $manager->getTable('Menu')->getTree()->fetchRoots();
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</code>
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