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Class PaginatorComponent
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 when calling paginate(). See that method for more details.
- Cake\Controller\Component implements Cake\Event\EventListenerInterface uses Cake\Core\InstanceConfigTrait , Cake\Log\LogTrait
Cake\Controller\Component\PaginatorComponent
Link: https://book.cakephp.org/3.0/en/controllers/components/pagination.html
Mixin: \Cake\Datasource\Paginator
Location: Controller/Component/PaginatorComponent.php
Properties summary
-
$_defaultConfigprotectedDefault pagination settings.array -
Datasource paginator instance.
$_paginatorprotected
Inherited Properties
Method Summary
-
__call() publicProxy method calls to Paginator.
-
__construct() publicConstructor
-
_setPagingParams() protectedSet paging params to request instance.
- Proxy getting/setting config options to Paginator.
-
configShallow() publicProxy setting config options to Paginator.
-
getConfig() publicProxy getting config options to Paginator.
-
getPaginator() publicGet paginator instance.
-
implementedEvents() publicEvents supported by this component.
-
mergeOptions() public
Merges the various options that Pagination uses. Pulls settings together from the following places:
-
paginate() publicHandles automatic pagination of model records.
-
setConfig() publicProxy setting config options to Paginator.
-
setPaginator() publicSet paginator instance.
Method Detail
__call()source public
__call( string $method , array $args )
Proxy method calls to Paginator.
Parameters
-
string
$method - Method name.
-
array
$args - Method arguments.
Returns
mixed__construct()source public
__construct( Cake\Controller\ComponentRegistry $registry , array $config = [] )
Constructor
Parameters
Cake\Controller\ComponentRegistry$registry- A ComponentRegistry this component can use to lazy load its components
-
array
$configoptional [] - Array of configuration settings.
Overrides
Cake\Controller\Component::__construct()
config()source public deprecated
config( string|array|null $key = null , mixed|null $value = null , boolean $merge = true )
Proxy getting/setting config options to Paginator.
Deprecated
3.5.0 use setConfig()/getConfig() instead.Parameters
-
string|array|null
$keyoptional null - The key to get/set, or a complete array of configs.
-
mixed|null
$valueoptional null - The value to set.
-
boolean
$mergeoptional true - Whether to recursively merge or overwrite existing config, defaults to true.
Returns
mixedConfig value being read, or the object itself on write operations.
Throws
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
Overrides
Cake\Core\InstanceConfigTrait::config()
configShallow()source public
configShallow( string|array $key , mixed|null $value = null )
Proxy setting config options to Paginator.
Parameters
-
string|array
$key - The key to set, or a complete array of configs.
-
mixed|null
$valueoptional null - The value to set.
Returns
$this
Overrides
Cake\Core\InstanceConfigTrait::configShallow()
getConfig()source public
getConfig( string|null $key = null , mixed $default = null )
Proxy getting config options to Paginator.
Parameters
-
string|null
$keyoptional null - The key to get or null for the whole config.
-
mixed
$defaultoptional null - The return value when the key does not exist.
Returns
mixedConfig value being read.
Overrides
Cake\Core\InstanceConfigTrait::getConfig()
getPaginator()source public
getPaginator( )
Get paginator instance.
Returns
Cake\Datasource\PaginatorimplementedEvents()source public
implementedEvents( )
Events supported by this component.
Returns
arrayOverrides
Cake\Controller\Component::implementedEvents()
mergeOptions()source public
mergeOptions( string $alias , array $settings )
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 config value whitelist to modify which options/values can be set using request parameters.
Parameters
-
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.
-
array
$settings - The settings to merge with the request data.
Returns
arrayArray of merged options.
paginate()source public
paginate( Cake\Datasource\RepositoryInterface|Cake\Datasource\QueryInterface $object , array $settings = [] )
Handles automatic pagination of model records.
Configuring pagination
When calling paginate() you can use the $settings parameter to pass in pagination settings. These settings are used to build the queries made and control other pagination settings.
If your settings contain a key with the current table's alias. The data inside that key will be used. Otherwise the top level configuration will be used.
$settings = [
'limit' => 20,
'maxLimit' => 100
];
$results = $paginator->paginate($table, $settings);
The above settings will be used to paginate any Table. You can configure Table specific settings by keying the settings with the Table alias.
$settings = [
'Articles' => [
'limit' => 20,
'maxLimit' => 100
],
'Comments' => [ ... ]
];
$results = $paginator->paginate($table, $settings);
This would allow you to have different pagination settings for Articles and Comments tables.
Controlling sort fields
By default CakePHP will automatically allow sorting on any column on the table object being paginated. Often times you will want to allow sorting on either associated columns or calculated fields. In these cases you will need to define a whitelist of all the columns you wish to allow sorting on. You can define the whitelist in the $settings parameter:
$settings = [
'Articles' => [
'finder' => 'custom',
'sortWhitelist' => ['title', 'author_id', 'comment_count'],
]
];
Passing an empty array as whitelist disallows sorting altogether.
Paginating with custom finders
You can paginate with any find type defined on your table using the finder option.
$settings = [
'Articles' => [
'finder' => 'popular'
]
];
$results = $paginator->paginate($table, $settings);
Would paginate using the find('popular') method.
You can also pass an already created instance of a query to this method:
$query = $this->Articles->find('popular')->matching('Tags', function ($q) {
return $q->where(['name' => 'CakePHP'])
});
$results = $paginator->paginate($query);
Scoping Request parameters
By using request parameter scopes you can paginate multiple queries in the same controller action:
$articles = $paginator->paginate($articlesQuery, ['scope' => 'articles']);
$tags = $paginator->paginate($tagsQuery, ['scope' => 'tags']);
Each of the above queries will use different query string parameter sets for pagination data. An example URL paginating both results would be:
/dashboard?articles[page]=1&tags[page]=2
Parameters
Cake\Datasource\RepositoryInterface|Cake\Datasource\QueryInterface$object- The table or query to paginate.
-
array
$settingsoptional [] - The settings/configuration used for pagination.
Returns
Cake\Datasource\ResultSetInterfaceQuery results
Throws
Cake\Http\Exception\NotFoundExceptionsetConfig()source public
setConfig( string|array $key , mixed|null $value = null , boolean $merge = true )
Proxy setting config options to Paginator.
Parameters
-
string|array
$key - The key to set, or a complete array of configs.
-
mixed|null
$valueoptional null - The value to set.
-
boolean
$mergeoptional true - Whether to recursively merge or overwrite existing config, defaults to true.
Returns
$this
Throws
Cake\Core\Exception\ExceptionWhen trying to set a key that is invalid.
Overrides
Cake\Core\InstanceConfigTrait::setConfig()
setPaginator()source public
setPaginator( Cake\Datasource\Paginator $paginator )
Set paginator instance.
Parameters
Cake\Datasource\Paginator$paginator- Paginator instance.
Returns
Cake\Controller\Component\PaginatorComponentMethods inherited from Cake\Controller\Component
__debugInfo()source public
__debugInfo( )
Returns an array that can be used to describe the internal state of this object.
Returns
array__get()source public
__get( string $name )
Magic method for lazy loading $components.
Parameters
-
string
$name - Name of component to get.
Returns
mixedA Component object or null.
getController()source public
getController( )
Get the controller this component is bound to.
Returns
Cake\Controller\ControllerThe bound controller.
initialize()source public
initialize( array $config )
Constructor hook method.
Implement this method to avoid having to overwrite the constructor and call parent.
Parameters
-
array
$config - The configuration settings provided to this component.
Methods used from Cake\Core\InstanceConfigTrait
_configDelete()source protected
_configDelete( string $key )
Deletes a single config key.
Parameters
-
string
$key - Key to delete.
Throws
Cake\Core\Exception\Exceptionif attempting to clobber existing config
_configRead()source protected
_configRead( string|null $key )
Reads a config key.
Parameters
-
string|null
$key - Key to read.
Returns
mixed_configWrite()source protected
_configWrite( string|array $key , mixed $value , boolean|string $merge = false )
Writes a config key.
Parameters
-
string|array
$key - Key to write to.
-
mixed
$value - Value to write.
-
boolean|string
$mergeoptional false -
True to merge recursively, 'shallow' for simple merge, false to overwrite, defaults to false.
Throws
Cake\Core\Exception\Exceptionif attempting to clobber existing config
Methods used from Cake\Log\LogTrait
log()source public
log( mixed $msg , integer|string $level = LogLevel::ERROR , string|array $context = [] )
Convenience method to write a message to Log. See Log::write() for more information on writing to logs.
Parameters
-
mixed
$msg - Log message.
-
integer|string
$leveloptional LogLevel::ERROR - Error level.
-
string|array
$contextoptional [] - Additional log data relevant to this message.
Returns
booleanSuccess of log write.
Properties detail
$_defaultConfigsource
protected array
Default pagination settings.
When calling paginate() these settings will be merged with the configuration you provide.
maxLimit- The maximum limit users can choose to view. Defaults to 100limit- The initial number of items per page. Defaults to 20.page- The starting page, defaults to 1.whitelist- 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.
[
'page' => 1,
'limit' => 20,
'maxLimit' => 100,
'whitelist' => ['limit', 'sort', 'page', 'direction']
]
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https://api.cakephp.org/3.7/class-Cake.Controller.Component.PaginatorComponent.html