mirror of
https://github.com/kamilwylegala/cakephp2-php8.git
synced 2024-11-17 20:38:25 +00:00
427 lines
13 KiB
PHP
427 lines
13 KiB
PHP
<?php
|
|
/**
|
|
* Paginator Component
|
|
*
|
|
* CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
|
|
* Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
|
|
*
|
|
* Licensed under The MIT License
|
|
* For full copyright and license information, please see the LICENSE.txt
|
|
* Redistributions of files must retain the above copyright notice.
|
|
*
|
|
* @copyright Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
|
|
* @link http://cakephp.org CakePHP(tm) Project
|
|
* @package Cake.Controller.Component
|
|
* @since CakePHP(tm) v 2.0
|
|
* @license http://www.opensource.org/licenses/mit-license.php MIT License
|
|
*/
|
|
|
|
App::uses('Component', 'Controller');
|
|
App::uses('Hash', 'Utility');
|
|
|
|
/**
|
|
* This component is used to handle automatic model data pagination. The primary way to use this
|
|
* component is to call the paginate() method. There is a convenience wrapper on Controller as well.
|
|
*
|
|
* ### Configuring pagination
|
|
*
|
|
* You configure pagination using the PaginatorComponent::$settings. This allows you to configure
|
|
* the default pagination behavior in general or for a specific model. General settings are used when there
|
|
* are no specific model configuration, or the model you are paginating does not have specific settings.
|
|
*
|
|
* ```
|
|
* $this->Paginator->settings = array(
|
|
* 'limit' => 20,
|
|
* 'maxLimit' => 100
|
|
* );
|
|
* ```
|
|
*
|
|
* The above settings will be used to paginate any model. You can configure model specific settings by
|
|
* keying the settings with the model name.
|
|
*
|
|
* ```
|
|
* $this->Paginator->settings = array(
|
|
* 'Post' => array(
|
|
* 'limit' => 20,
|
|
* 'maxLimit' => 100
|
|
* ),
|
|
* 'Comment' => array( ... )
|
|
* );
|
|
* ```
|
|
*
|
|
* This would allow you to have different pagination settings for `Comment` and `Post` models.
|
|
*
|
|
* #### Paginating with custom finders
|
|
*
|
|
* You can paginate with any find type defined on your model using the `findType` option.
|
|
*
|
|
* ```
|
|
* $this->Paginator->settings = array(
|
|
* 'Post' => array(
|
|
* 'findType' => 'popular'
|
|
* )
|
|
* );
|
|
* ```
|
|
*
|
|
* Would paginate using the `find('popular')` method.
|
|
*
|
|
* @package Cake.Controller.Component
|
|
* @link http://book.cakephp.org/2.0/en/core-libraries/components/pagination.html
|
|
*/
|
|
class PaginatorComponent extends Component {
|
|
|
|
/**
|
|
* Pagination settings. These settings control pagination at a general level.
|
|
* You can also define sub arrays for pagination settings for specific models.
|
|
*
|
|
* - `maxLimit` The maximum limit users can choose to view. Defaults to 100
|
|
* - `limit` The initial number of items per page. Defaults to 20.
|
|
* - `page` The starting page, defaults to 1.
|
|
* - `paramType` What type of parameters you want pagination to use?
|
|
* - `named` Use named parameters / routed parameters.
|
|
* - `querystring` Use query string parameters.
|
|
*
|
|
* @var array
|
|
*/
|
|
public $settings = array(
|
|
'page' => 1,
|
|
'limit' => 20,
|
|
'maxLimit' => 100,
|
|
'paramType' => 'named'
|
|
);
|
|
|
|
/**
|
|
* A list of parameters users are allowed to set using request parameters. Modifying
|
|
* this list will allow users to have more influence over pagination,
|
|
* be careful with what you permit.
|
|
*
|
|
* @var array
|
|
*/
|
|
public $whitelist = array(
|
|
'limit', 'sort', 'page', 'direction'
|
|
);
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param ComponentCollection $collection A ComponentCollection this component can use to lazy load its components
|
|
* @param array $settings Array of configuration settings.
|
|
*/
|
|
public function __construct(ComponentCollection $collection, $settings = array()) {
|
|
$settings = array_merge($this->settings, (array)$settings);
|
|
$this->Controller = $collection->getController();
|
|
parent::__construct($collection, $settings);
|
|
}
|
|
|
|
/**
|
|
* Handles automatic pagination of model records.
|
|
*
|
|
* @param Model|string $object Model to paginate (e.g: model instance, or 'Model', or 'Model.InnerModel')
|
|
* @param string|array $scope Additional find conditions to use while paginating
|
|
* @param array $whitelist List of allowed fields for ordering. This allows you to prevent ordering
|
|
* on non-indexed, or undesirable columns. See PaginatorComponent::validateSort() for additional details
|
|
* on how the whitelisting and sort field validation works.
|
|
* @return array Model query results
|
|
* @throws MissingModelException
|
|
* @throws NotFoundException
|
|
*/
|
|
public function paginate($object = null, $scope = array(), $whitelist = array()) {
|
|
if (is_array($object)) {
|
|
$whitelist = $scope;
|
|
$scope = $object;
|
|
$object = null;
|
|
}
|
|
|
|
$object = $this->_getObject($object);
|
|
|
|
if (!is_object($object)) {
|
|
throw new MissingModelException($object);
|
|
}
|
|
|
|
$options = $this->mergeOptions($object->alias);
|
|
$options = $this->validateSort($object, $options, $whitelist);
|
|
$options = $this->checkLimit($options);
|
|
|
|
$conditions = $fields = $order = $limit = $page = $recursive = null;
|
|
|
|
if (!isset($options['conditions'])) {
|
|
$options['conditions'] = array();
|
|
}
|
|
|
|
$type = 'all';
|
|
|
|
if (isset($options[0])) {
|
|
$type = $options[0];
|
|
unset($options[0]);
|
|
}
|
|
|
|
extract($options);
|
|
|
|
if (is_array($scope) && !empty($scope)) {
|
|
$conditions = array_merge($conditions, $scope);
|
|
} elseif (is_string($scope)) {
|
|
$conditions = array($conditions, $scope);
|
|
}
|
|
if ($recursive === null) {
|
|
$recursive = $object->recursive;
|
|
}
|
|
|
|
$extra = array_diff_key($options, compact(
|
|
'conditions', 'fields', 'order', 'limit', 'page', 'recursive'
|
|
));
|
|
|
|
if (!empty($extra['findType'])) {
|
|
$type = $extra['findType'];
|
|
unset($extra['findType']);
|
|
}
|
|
|
|
if ($type !== 'all') {
|
|
$extra['type'] = $type;
|
|
}
|
|
|
|
if ((int)$page < 1) {
|
|
$page = 1;
|
|
}
|
|
$page = $options['page'] = (int)$page;
|
|
|
|
if ($object->hasMethod('paginate')) {
|
|
$results = $object->paginate(
|
|
$conditions, $fields, $order, $limit, $page, $recursive, $extra
|
|
);
|
|
} else {
|
|
$parameters = compact('conditions', 'fields', 'order', 'limit', 'page');
|
|
if ($recursive != $object->recursive) {
|
|
$parameters['recursive'] = $recursive;
|
|
}
|
|
$results = $object->find($type, array_merge($parameters, $extra));
|
|
}
|
|
$defaults = $this->getDefaults($object->alias);
|
|
unset($defaults[0]);
|
|
|
|
if (!$results) {
|
|
$count = 0;
|
|
} elseif ($object->hasMethod('paginateCount')) {
|
|
$count = $object->paginateCount($conditions, $recursive, $extra);
|
|
} elseif ($page === 1 && count($results) < $limit) {
|
|
$count = count($results);
|
|
} else {
|
|
$parameters = compact('conditions');
|
|
if ($recursive != $object->recursive) {
|
|
$parameters['recursive'] = $recursive;
|
|
}
|
|
$count = $object->find('count', array_merge($parameters, $extra));
|
|
}
|
|
$pageCount = (int)ceil($count / $limit);
|
|
$requestedPage = $page;
|
|
$page = max(min($page, $pageCount), 1);
|
|
|
|
$paging = array(
|
|
'page' => $page,
|
|
'current' => count($results),
|
|
'count' => $count,
|
|
'prevPage' => ($page > 1),
|
|
'nextPage' => ($count > ($page * $limit)),
|
|
'pageCount' => $pageCount,
|
|
'order' => $order,
|
|
'limit' => $limit,
|
|
'options' => Hash::diff($options, $defaults),
|
|
'paramType' => $options['paramType']
|
|
);
|
|
|
|
if (!isset($this->Controller->request['paging'])) {
|
|
$this->Controller->request['paging'] = array();
|
|
}
|
|
$this->Controller->request['paging'] = array_merge(
|
|
(array)$this->Controller->request['paging'],
|
|
array($object->alias => $paging)
|
|
);
|
|
|
|
if ($requestedPage > $page) {
|
|
throw new NotFoundException();
|
|
}
|
|
|
|
if (!in_array('Paginator', $this->Controller->helpers) &&
|
|
!array_key_exists('Paginator', $this->Controller->helpers)
|
|
) {
|
|
$this->Controller->helpers[] = 'Paginator';
|
|
}
|
|
return $results;
|
|
}
|
|
|
|
/**
|
|
* Get the object pagination will occur on.
|
|
*
|
|
* @param string|Model $object The object you are looking for.
|
|
* @return mixed The model object to paginate on.
|
|
*/
|
|
protected function _getObject($object) {
|
|
if (is_string($object)) {
|
|
$assoc = null;
|
|
if (strpos($object, '.') !== false) {
|
|
list($object, $assoc) = pluginSplit($object);
|
|
}
|
|
if ($assoc && isset($this->Controller->{$object}->{$assoc})) {
|
|
return $this->Controller->{$object}->{$assoc};
|
|
}
|
|
if ($assoc && isset($this->Controller->{$this->Controller->modelClass}->{$assoc})) {
|
|
return $this->Controller->{$this->Controller->modelClass}->{$assoc};
|
|
}
|
|
if (isset($this->Controller->{$object})) {
|
|
return $this->Controller->{$object};
|
|
}
|
|
if (isset($this->Controller->{$this->Controller->modelClass}->{$object})) {
|
|
return $this->Controller->{$this->Controller->modelClass}->{$object};
|
|
}
|
|
}
|
|
if (empty($object) || $object === null) {
|
|
if (isset($this->Controller->{$this->Controller->modelClass})) {
|
|
return $this->Controller->{$this->Controller->modelClass};
|
|
}
|
|
|
|
$className = null;
|
|
$name = $this->Controller->uses[0];
|
|
if (strpos($this->Controller->uses[0], '.') !== false) {
|
|
list($name, $className) = explode('.', $this->Controller->uses[0]);
|
|
}
|
|
if ($className) {
|
|
return $this->Controller->{$className};
|
|
}
|
|
|
|
return $this->Controller->{$name};
|
|
}
|
|
return $object;
|
|
}
|
|
|
|
/**
|
|
* Merges the various options that Pagination uses.
|
|
* Pulls settings together from the following places:
|
|
*
|
|
* - General pagination settings
|
|
* - Model specific settings.
|
|
* - Request parameters
|
|
*
|
|
* The result of this method is the aggregate of all the option sets combined together. You can change
|
|
* PaginatorComponent::$whitelist to modify which options/values can be set using request parameters.
|
|
*
|
|
* @param string $alias Model alias being paginated, if the general settings has a key with this value
|
|
* that key's settings will be used for pagination instead of the general ones.
|
|
* @return array Array of merged options.
|
|
*/
|
|
public function mergeOptions($alias) {
|
|
$defaults = $this->getDefaults($alias);
|
|
switch ($defaults['paramType']) {
|
|
case 'named':
|
|
$request = $this->Controller->request->params['named'];
|
|
break;
|
|
case 'querystring':
|
|
$request = $this->Controller->request->query;
|
|
break;
|
|
}
|
|
$request = array_intersect_key($request, array_flip($this->whitelist));
|
|
return array_merge($defaults, $request);
|
|
}
|
|
|
|
/**
|
|
* Get the default settings for a $model. If there are no settings for a specific model, the general settings
|
|
* will be used.
|
|
*
|
|
* @param string $alias Model name to get default settings for.
|
|
* @return array An array of pagination defaults for a model, or the general settings.
|
|
*/
|
|
public function getDefaults($alias) {
|
|
$defaults = $this->settings;
|
|
if (isset($this->settings[$alias])) {
|
|
$defaults = $this->settings[$alias];
|
|
}
|
|
if (isset($defaults['limit']) &&
|
|
(empty($defaults['maxLimit']) || $defaults['limit'] > $defaults['maxLimit'])
|
|
) {
|
|
$defaults['maxLimit'] = $defaults['limit'];
|
|
}
|
|
return array_merge(
|
|
array('page' => 1, 'limit' => 20, 'maxLimit' => 100, 'paramType' => 'named'),
|
|
$defaults
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Validate that the desired sorting can be performed on the $object. Only fields or
|
|
* virtualFields can be sorted on. The direction param will also be sanitized. Lastly
|
|
* sort + direction keys will be converted into the model friendly order key.
|
|
*
|
|
* You can use the whitelist parameter to control which columns/fields are available for sorting.
|
|
* This helps prevent users from ordering large result sets on un-indexed values.
|
|
*
|
|
* Any columns listed in the sort whitelist will be implicitly trusted. You can use this to sort
|
|
* on synthetic columns, or columns added in custom find operations that may not exist in the schema.
|
|
*
|
|
* @param Model $object The model being paginated.
|
|
* @param array $options The pagination options being used for this request.
|
|
* @param array $whitelist The list of columns that can be used for sorting. If empty all keys are allowed.
|
|
* @return array An array of options with sort + direction removed and replaced with order if possible.
|
|
*/
|
|
public function validateSort(Model $object, array $options, array $whitelist = array()) {
|
|
if (empty($options['order']) && is_array($object->order)) {
|
|
$options['order'] = $object->order;
|
|
}
|
|
|
|
if (isset($options['sort'])) {
|
|
$direction = null;
|
|
if (isset($options['direction'])) {
|
|
$direction = strtolower($options['direction']);
|
|
}
|
|
if (!in_array($direction, array('asc', 'desc'))) {
|
|
$direction = 'asc';
|
|
}
|
|
$options['order'] = array($options['sort'] => $direction);
|
|
}
|
|
|
|
if (!empty($whitelist) && isset($options['order']) && is_array($options['order'])) {
|
|
$field = key($options['order']);
|
|
$inWhitelist = in_array($field, $whitelist, true);
|
|
if (!$inWhitelist) {
|
|
$options['order'] = null;
|
|
}
|
|
return $options;
|
|
}
|
|
|
|
if (!empty($options['order']) && is_array($options['order'])) {
|
|
$order = array();
|
|
foreach ($options['order'] as $key => $value) {
|
|
$field = $key;
|
|
$alias = $object->alias;
|
|
if (strpos($key, '.') !== false) {
|
|
list($alias, $field) = explode('.', $key);
|
|
}
|
|
$correctAlias = ($object->alias === $alias);
|
|
|
|
if ($correctAlias && $object->hasField($field)) {
|
|
$order[$object->alias . '.' . $field] = $value;
|
|
} elseif ($correctAlias && $object->hasField($key, true)) {
|
|
$order[$field] = $value;
|
|
} elseif (isset($object->{$alias}) && $object->{$alias}->hasField($field, true)) {
|
|
$order[$alias . '.' . $field] = $value;
|
|
}
|
|
}
|
|
$options['order'] = $order;
|
|
}
|
|
|
|
return $options;
|
|
}
|
|
|
|
/**
|
|
* Check the limit parameter and ensure its within the maxLimit bounds.
|
|
*
|
|
* @param array $options An array of options with a limit key to be checked.
|
|
* @return array An array of options for pagination
|
|
*/
|
|
public function checkLimit(array $options) {
|
|
$options['limit'] = (int)$options['limit'];
|
|
if (empty($options['limit']) || $options['limit'] < 1) {
|
|
$options['limit'] = 1;
|
|
}
|
|
$options['limit'] = min($options['limit'], $options['maxLimit']);
|
|
return $options;
|
|
}
|
|
|
|
}
|