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sfPropelActAsNestedSetBehaviorPlugin - 0.9.1Propel nested set behavior |
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Some of the plugins offer one-click modules to easily add complete features to your symfony applications
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DescriptionThe sfPropelActAsNestedSetBehaviorPlugin is a symfony plugin that provides nested set capabilities to Propel objects. Categories |
| Name | |
|---|---|
Tristan Rivoallan |
ten.nallaovir <<ta>> natsirt |
| Name | |
|---|---|
Gordon Franke |
| Version | License | API | Released |
|---|---|---|---|
| 0.9.1beta | LGPL | 0.9.1beta | 23/07/2007 |
| 0.9.0beta | LGPL | 0.9.0beta | 24/05/2007 |
| Version | License | API | Released |
|---|---|---|---|
| 0.9.1beta | LGPL | 0.9.1beta | 23/07/2007 |
| 0.9.0beta | LGPL | 0.9.0beta | 24/05/2007 |
| Version | License | API | Released |
|---|---|---|---|
| 0.9.1beta | LGPL | 0.9.1beta | 23/07/2007 |
| 0.9.0beta | LGPL | 0.9.0beta | 24/05/2007 |
| 0.8.2beta | MIT license | 0.8.2beta | 18/04/2007 |
| 0.8.1beta | MIT license | 0.8.1beta | 22/03/2007 |
| 0.8.0beta | MIT license | 0.8.0beta | 19/02/2007 |
| 0.7.0beta | MIT license | 0.7.0beta | 19/02/2007 |
| 0.6.2beta | MIT license | 0.6.2beta | 19/02/2007 |
| 0.6.1beta | MIT license | 0.6.1beta | 15/02/2007 |
| 0.6.0beta | MIT license | 0.6.0beta | 15/02/2007 |
| 0.5.1beta | MIT license | 0.5.1beta | 14/02/2007 |
| 0.5.0beta | MIT license | 0.5.0beta | 14/02/2007 |
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php symfony plugin:install sfPropelActAsNestedSetBehaviorPlugin --release=0.9.1 php symfony plugin:install sfPropelActAsNestedSetBehaviorPlugin --release=0.9.1 php symfony plugin-install http://plugins.symfony-project.org/sfPropelActAsNestedSetBehaviorPlugin Go to the repository: http://svn.symfony-project.com/plugins/sfPropelActAsNestedSetBehaviorPlugin
The sfPropelActAsNestedSetBehaviorPlugin is a symfony plugin that provides nested set capabilities to Propel objects.
Nested sets (aka modified preorder tree traversal) is a very efficient way (in terms of performances) to browse and edit a tree like structure in an RDBMS.
You can read a good introduction to nested sets on MySQL developers' zone.
As of now, the plugin is known to work with MySQL and PostgreSQL (in trunk). Other RDBMS may work but without any guaranty. Patches are welcome, of course :)
Install the plugin
symfony plugin-install http://plugins.symfony-project.com/sfPropelActAsNestedSetBehaviorPlugin
Add new fields to your schema.xml
[xml]
scope and tree_parent columns can be of any type.
Enable Propel behavior support in propel.ini:
propel.builder.AddBehaviors = true
If you have to enable the behavior support, rebuild your model:
symfony propel-build-model
Enable the behavior for one of your Propel model:
<?php // lib/model/ForumPost.php class ForumPost { } $columns_map = array('left' => ForumPostPeer::TREE_LEFT, 'right' => ForumPostPeer::TREE_RIGHT, 'parent' => ForumPostPeer::TREE_PARENT, 'scope' => ForumPostPeer::TOPIC_ID); sfPropelBehavior::add('ForumPost', array('actasnestedset' => array('columns' => $columns_map)));
The column map is used by the behavior to know which columns hold information it needs :
<?php $root = new ForumPost(); $root->makeRoot(); $root->save(); $p1 = new ForumPost(); $p1->insertAsFirstChildOf($root); $p1->save(); $p2 = new ForumPost(); $p2->insertAsFirstChildOf($p1); $p2->save(); /* * Resulting tree : * * ROOT * |- P1 * |- P2 */
<?php $root1 = new ForumPost(); $root1->makeRoot(); $root1->setTopicId(1); $root1->save(); $root2 = new ForumPost(); $root2->makeRoot(); $root2->setTopicId(2); $root2->save(); $p1 = new ForumPost(); $p1->insertAsFirstChildOf($root1); $p1->save(); $p2 = new ForumPost(); $p2->insertAsFirstChildOf($root2); $p2->save(); /* * Resulting trees : * * ROOT1 * |- P1 * * ROOT2 * |- P2 */
<?php $root = ForumPostPeer::retrieveByPk(rootnodepk); ?> <ul> <?php echo $root->getTitle() ?> <?php foreach ($root->getDescendants() as $post): ?> <li style="padding-left: <?php echo $post->getLevel() ?>em;"> <?php echo $post->getTitle() ?> </li> <?php endforeach; ?> </ul>
<?php // Decide which posts to fetch $c = new Criteria(); $c->add(ForumPostPeer::TOPIC_ID, $topic_id); $c->addAscendingOrderByColumn(ForumPostPeer::TREE_LEFT); // ForumPostPeer::TREE_LEFT is the column holding nested set's left value // Create pager $pager = new sfPropelPager('ForumPost', 10); $pager->setCriteria($c); $pager->setPage($this->getRequestParameter('page', 1)); $pager->init();
Enabling the behaviors adds the following method to the Propel objects :
void insertAsFirstChildOf(BaseObject $dest_node) : Inserts node as first child of given node.void insertAsLastChildOf(BaseObject $dest_node) : Inserts node as last child of given node.void insertAsNextSiblingOf(BaseObject $dest_node) : Inserts node as next sibling of given node.void insertAsPrevSiblingOf(BaseObject $dest_node) : Inserts node as previous sibling of given node.void insertAsParentOf(BaseObject $dest_node) : Inserts node as parent of given nodebool hasChildren() : Returns true if given node as one or several children.bool isRoot() : Returns true if given node is a root node.bool hasParent() : Returns true if given node has a parent node.bool hasNextSibling() : Returns true if given node has a next sibling.bool hasPrevSibling() : Returns true if given node has a previous sibling.bool isLeaf() : Returns true if given node does not have children.bool isChildOf(BaseObject $node) : Returns true if given node is parent of node.bool isDescendantOf(BaseObject $node) : Returns true if given node is descendant of node.integer getNumberOfChildren() : Returns given node number of direct children.integer getNumberOfDescendants() : Returns given node number of descendants (n level).integer getLevel() : Returns given node level.BaseObject|null getParent($peer_method = 'retrieveByPk') : Returns node parent or null if node does not have a parent.array getChildren($peer_method = 'doSelect') : Returns given node direct children.array getDescendants($peer_method = 'doSelect') : Returns given node descendants (n level).BaseObject retrieveNextSibling() : Returns given node next sibling.BaseObject retrievePrevSibling() : Returns given node previous sibling.BaseObject retrieveFirstChild() : Returns given node first child.BaseObject retrieveLastChild() : Returns given node last child.BaseObject retrieveParent($peer_method = 'doSelectOne') : Returns given node parent.array retrieveSiblings() : Returns node siblings.array getPath($peer_method = 'doSelectOne') : Returns path to a specific node as an array, useful to create breadcrumbs.void moveToFirstChildOf(BaseObject $dest_node) : Moves node to first child of given node.void moveToLastChildOf(BaseObject $dest_node) : Moves node to last child of given node.void moveToNextSiblingOf(BaseObject $dest_node) : Moves node to next sibling of given node.void moveToPrevSiblingOf(BaseObject $dest_node) : Moves node to previous sibling of given node.void deleteChildren() : Deletes node direct childrenvoid deleteDescendants() : Deletes node descendants (n level)void makeRoot() : Sets node properties to make it a root node.BaseObject reload() : Returns an up to date version of nodebool isEqualTo(BaseObject $node) : Returns true if given node is equivalent to node.$peer_method as an optional parameter to getParent() and getPath() getLevel() cache (gordon franke)retrieveFirstChild() and retrieveLastChild() missing references to scope node (Olivier.Mansour)deleteDescendants() (Piers.Warmers)getDescendants() implementation node level caching (tristan)isDescendantOf() method (Piers.Warmers)getDescendants() (Jon.Collins)sfPropelActAsNestedSetBehaviorUtils::dumpTree()getParent() method (olivier mansour)getLevel() unit testsgetDescendants(), getChildren(), retrieveSiblings()getStubFromPeer()makeRoot() should accept non new objects (peter van garderen)getDescendants() should not try to get descendants if node is a leaf (peter van garderen)Implemented more methods (+ unit tests) :
insertAsParentOfretrieveSiblingsisEqualToisChildOfEnhanced internal API
Implemented missing methods (+ unit tests) :
moveToPrevSiblingOfmoveToNextSiblingOfdeleteChildrendeleteDescendantsFixed a bug due to wrong usage of rtrim. (Thanks to Krešo Kunjas)
Fixed minor bug in getPath()
Implemented missing node retrieval methods :
retrieveFirstChildretrieveLastChildretrieveParentgetPathUpdated docs and unit tests accordingly
Pear package missed plugin's config.php file.
Initial public release. The behavior is stable and fully unit-tested, but the API is not yet complete. Missing methods :
retrieveFirstChildretrieveLastChildmoveToPrevSiblingOfmoveToNextSiblingOfdeleteChildrendeleteTreegetPathTristan Rivoallan and Gordon Franke.
Krasimir Angelov, Jon Collins, Maciej Filipiak, Eric Fredj, Peter van Garderen, Olivier Mansour, Paul Markovitch, Krešo Kunjas, Piers Warmers, Francois Zaninotto.
Plugin's code is based on work from Heltem and Joe Simms.
Thanks to all of you !
