Abstract Class yii\data\BaseDataProvider
| Inheritance | yii\data\BaseDataProvider » yii\base\Component » yii\base\BaseObject |
|---|---|
| Implements | yii\base\Configurable, yii\data\DataProviderInterface |
| Subclasses | yii\data\ActiveDataProvider, yii\data\ArrayDataProvider, yii\data\SqlDataProvider |
| Available since version | 2.0 |
| Source Code | https://github.com/yiisoft/yii2/blob/master/framework/data/BaseDataProvider.php |
BaseDataProvider provides a base class that implements the yii\data\DataProviderInterface.
For more details and usage information on BaseDataProvider, see the guide article on data providers.
Public Properties
| Property | Type | Description | Defined By |
|---|---|---|---|
| $behaviors | yii\base\Behavior[] | List of behaviors attached to this component. | yii\base\Component |
| $count | integer | The number of data models in the current page. | yii\data\BaseDataProvider |
| $id | string|null | An ID that uniquely identifies the data provider among all data providers. | yii\data\BaseDataProvider |
| $keys | array | The list of key values corresponding to $models. | yii\data\BaseDataProvider |
| $models | array | The list of data models in the current page. | yii\data\BaseDataProvider |
| $pagination | yii\data\Pagination|false | The pagination object. | yii\data\BaseDataProvider |
| $sort | yii\data\Sort|boolean | The sorting object. | yii\data\BaseDataProvider |
| $totalCount | integer | Total number of possible data models. | yii\data\BaseDataProvider |
Public Methods
| Method | Description | Defined By |
|---|---|---|
| __call() | Calls the named method which is not a class method. | yii\base\Component |
| __clone() | This method is called after the object is created by cloning an existing one. | yii\base\Component |
| __construct() | Constructor. | yii\base\BaseObject |
| __get() | Returns the value of a component property. | yii\base\Component |
| __isset() | Checks if a property is set, i.e. defined and not null. | yii\base\Component |
| __set() | Sets the value of a component property. | yii\base\Component |
| __unset() | Sets a component property to be null. | yii\base\Component |
| attachBehavior() | Attaches a behavior to this component. | yii\base\Component |
| attachBehaviors() | Attaches a list of behaviors to the component. | yii\base\Component |
| behaviors() | Returns a list of behaviors that this component should behave as. | yii\base\Component |
| canGetProperty() | Returns a value indicating whether a property can be read. | yii\base\Component |
| canSetProperty() | Returns a value indicating whether a property can be set. | yii\base\Component |
| className() | Returns the fully qualified name of this class. | yii\base\BaseObject |
| detachBehavior() | Detaches a behavior from the component. | yii\base\Component |
| detachBehaviors() | Detaches all behaviors from the component. | yii\base\Component |
| ensureBehaviors() | Makes sure that the behaviors declared in behaviors() are attached to this component. | yii\base\Component |
| getBehavior() | Returns the named behavior object. | yii\base\Component |
| getBehaviors() | Returns all behaviors attached to this component. | yii\base\Component |
| getCount() | Returns the number of data models in the current page. | yii\data\BaseDataProvider |
| getKeys() | Returns the key values associated with the data models. | yii\data\BaseDataProvider |
| getModels() | Returns the data models in the current page. | yii\data\BaseDataProvider |
| getPagination() | Returns the pagination object used by this data provider. | yii\data\BaseDataProvider |
| getSort() | Returns the sorting object used by this data provider. | yii\data\BaseDataProvider |
| getTotalCount() | Returns the total number of data models. | yii\data\BaseDataProvider |
| hasEventHandlers() | Returns a value indicating whether there is any handler attached to the named event. | yii\base\Component |
| hasMethod() | Returns a value indicating whether a method is defined. | yii\base\Component |
| hasProperty() | Returns a value indicating whether a property is defined for this component. | yii\base\Component |
| init() | Initializes the object. | yii\data\BaseDataProvider |
| off() | Detaches an existing event handler from this component. | yii\base\Component |
| on() | Attaches an event handler to an event. | yii\base\Component |
| prepare() | Prepares the data models and keys. | yii\data\BaseDataProvider |
| refresh() | Refreshes the data provider. | yii\data\BaseDataProvider |
| setKeys() | Sets the key values associated with the data models. | yii\data\BaseDataProvider |
| setModels() | Sets the data models in the current page. | yii\data\BaseDataProvider |
| setPagination() | Sets the pagination for this data provider. | yii\data\BaseDataProvider |
| setSort() | Sets the sort definition for this data provider. | yii\data\BaseDataProvider |
| setTotalCount() | Sets the total number of data models. | yii\data\BaseDataProvider |
| trigger() | Triggers an event. | yii\base\Component |
Protected Methods
| Method | Description | Defined By |
|---|---|---|
| prepareKeys() | Prepares the keys associated with the currently available data models. | yii\data\BaseDataProvider |
| prepareModels() | Prepares the data models that will be made available in the current page. | yii\data\BaseDataProvider |
| prepareTotalCount() | Returns a value indicating the total number of data models in this data provider. | yii\data\BaseDataProvider |
Property Details
An ID that uniquely identifies the data provider among all data providers. Generated automatically the following way in case it is not set:
- First data provider ID is empty.
- Second and all subsequent data provider IDs are: "dp-1", "dp-2", etc.
The pagination object. If this is false, it means the pagination is disabled. Note that the type of this property differs in getter and setter. See getPagination() and setPagination() for details.
Method Details
Defined in: yii\base\Component::__call()
Calls the named method which is not a class method.
This method will check if any attached behavior has the named method and will execute it if available.
Do not call this method directly as it is a PHP magic method that will be implicitly called when an unknown method is being invoked.
| public mixed __call ( $name, $params ) | ||
| $name | string |
The method name |
| $params | array |
Method parameters |
| return | mixed |
The method return value |
|---|---|---|
| throws | yii\base\UnknownMethodException |
when calling unknown method |
public function __call($name, $params)
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $object) {
if ($object->hasMethod($name)) {
return call_user_func_array([$object, $name], $params);
}
}
throw new UnknownMethodException('Calling unknown method: ' . get_class($this) . "::$name()");
}
Defined in: yii\base\Component::__clone()
This method is called after the object is created by cloning an existing one.
It removes all behaviors because they are attached to the old object.
| public void __clone ( ) |
public function __clone()
{
$this->_events = [];
$this->_eventWildcards = [];
$this->_behaviors = null;
}
Defined in: yii\base\BaseObject::__construct()
Constructor.
The default implementation does two things:
- Initializes the object with the given configuration
$config. - Call init().
If this method is overridden in a child class, it is recommended that
- the last parameter of the constructor is a configuration array, like
$confighere. - call the parent implementation at the end of the constructor.
| public void __construct ( $config = [] ) | ||
| $config | array |
Name-value pairs that will be used to initialize the object properties |
public function __construct($config = [])
{
if (!empty($config)) {
Yii::configure($this, $config);
}
$this->init();
}
Defined in: yii\base\Component::__get()
Returns the value of a component property.
This method will check in the following order and act accordingly:
- a property defined by a getter: return the getter result
- a property of a behavior: return the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $value = $component->property;.
See also __set().
| public mixed __get ( $name ) | ||
| $name | string |
The property name |
| return | mixed |
The property value or the value of a behavior's property |
|---|---|---|
| throws | yii\base\UnknownPropertyException |
if the property is not defined |
| throws | yii\base\InvalidCallException |
if the property is write-only. |
public function __get($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
// read property, e.g. getName()
return $this->$getter();
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name;
}
}
if (method_exists($this, 'set' . $name)) {
throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__isset()
Checks if a property is set, i.e. defined and not null.
This method will check in the following order and act accordingly:
- a property defined by a setter: return whether the property is set
- a property of a behavior: return whether the property is set
- return
falsefor non existing properties
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing isset($component->property).
| public boolean __isset ( $name ) | ||
| $name | string |
The property name or the event name |
| return | boolean |
Whether the named property is set |
|---|---|---|
public function __isset($name)
{
$getter = 'get' . $name;
if (method_exists($this, $getter)) {
return $this->$getter() !== null;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name)) {
return $behavior->$name !== null;
}
}
return false;
}
Defined in: yii\base\Component::__set()
Sets the value of a component property.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value
- an event in the format of "on xyz": attach the handler to the event "xyz"
- a behavior in the format of "as xyz": attach the behavior named as "xyz"
- a property of a behavior: set the behavior property value
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing $component->property = $value;.
See also __get().
| public void __set ( $name, $value ) | ||
| $name | string |
The property name or the event name |
| $value | mixed |
The property value |
| throws | yii\base\UnknownPropertyException |
if the property is not defined |
|---|---|---|
| throws | yii\base\InvalidCallException |
if the property is read-only. |
public function __set($name, $value)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
// set property
$this->$setter($value);
return;
} elseif (strncmp($name, 'on ', 3) === 0) {
// on event: attach event handler
$this->on(trim(substr($name, 3)), $value);
return;
} elseif (strncmp($name, 'as ', 3) === 0) {
// as behavior: attach behavior
$name = trim(substr($name, 3));
$this->attachBehavior($name, $value instanceof Behavior ? $value : Yii::createObject($value));
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = $value;
return;
}
}
if (method_exists($this, 'get' . $name)) {
throw new InvalidCallException('Setting read-only property: ' . get_class($this) . '::' . $name);
}
throw new UnknownPropertyException('Setting unknown property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::__unset()
Sets a component property to be null.
This method will check in the following order and act accordingly:
- a property defined by a setter: set the property value to be null
- a property of a behavior: set the property value to be null
Do not call this method directly as it is a PHP magic method that
will be implicitly called when executing unset($component->property).
| public void __unset ( $name ) | ||
| $name | string |
The property name |
| throws | yii\base\InvalidCallException |
if the property is read only. |
|---|---|---|
public function __unset($name)
{
$setter = 'set' . $name;
if (method_exists($this, $setter)) {
$this->$setter(null);
return;
}
// behavior property
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name)) {
$behavior->$name = null;
return;
}
}
throw new InvalidCallException('Unsetting an unknown or read-only property: ' . get_class($this) . '::' . $name);
}
Defined in: yii\base\Component::attachBehavior()
Attaches a behavior to this component.
This method will create the behavior object based on the given configuration. After that, the behavior object will be attached to this component by calling the yii\base\Behavior::attach() method.
See also detachBehavior().
| public yii\base\Behavior attachBehavior ( $name, $behavior ) | ||
| $name | string |
The name of the behavior. |
| $behavior | string|array|yii\base\Behavior |
The behavior configuration. This can be one of the following:
|
| return | yii\base\Behavior |
The behavior object |
|---|---|---|
public function attachBehavior($name, $behavior)
{
$this->ensureBehaviors();
return $this->attachBehaviorInternal($name, $behavior);
}
Defined in: yii\base\Component::attachBehaviors()
Attaches a list of behaviors to the component.
Each behavior is indexed by its name and should be a yii\base\Behavior object, a string specifying the behavior class, or an configuration array for creating the behavior.
See also attachBehavior().
| public void attachBehaviors ( $behaviors ) | ||
| $behaviors | array |
List of behaviors to be attached to the component |
public function attachBehaviors($behaviors)
{
$this->ensureBehaviors();
foreach ($behaviors as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
Defined in: yii\base\Component::behaviors()
Returns a list of behaviors that this component should behave as.
Child classes may override this method to specify the behaviors they want to behave as.
The return value of this method should be an array of behavior objects or configurations indexed by behavior names. A behavior configuration can be either a string specifying the behavior class or an array of the following structure:
'behaviorName' => [
'class' => 'BehaviorClass',
'property1' => 'value1',
'property2' => 'value2',
]
Note that a behavior class must extend from yii\base\Behavior. Behaviors can be attached using a name or anonymously. When a name is used as the array key, using this name, the behavior can later be retrieved using getBehavior() or be detached using detachBehavior(). Anonymous behaviors can not be retrieved or detached.
Behaviors declared in this method will be attached to the component automatically (on demand).
| public array behaviors ( ) | ||
| return | array |
The behavior configurations. |
|---|---|---|
public function behaviors()
{
return [];
}
Defined in: yii\base\Component::canGetProperty()
Returns a value indicating whether a property can be read.
A property can be read if:
- the class has a getter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVarsis true); - an attached behavior has a readable property of the given name (when
$checkBehaviorsis true).
See also canSetProperty().
| public boolean canGetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
| $name | string |
The property name |
| $checkVars | boolean |
Whether to treat member variables as properties |
| $checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
| return | boolean |
Whether the property can be read |
|---|---|---|
public function canGetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'get' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canGetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::canSetProperty()
Returns a value indicating whether a property can be set.
A property can be written if:
- the class has a setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVarsis true); - an attached behavior has a writable property of the given name (when
$checkBehaviorsis true).
See also canGetProperty().
| public boolean canSetProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
| $name | string |
The property name |
| $checkVars | boolean |
Whether to treat member variables as properties |
| $checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
| return | boolean |
Whether the property can be written |
|---|---|---|
public function canSetProperty($name, $checkVars = true, $checkBehaviors = true)
{
if (method_exists($this, 'set' . $name) || $checkVars && property_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->canSetProperty($name, $checkVars)) {
return true;
}
}
}
return false;
}
::class instead.
Defined in: yii\base\BaseObject::className()
Returns the fully qualified name of this class.
| public static string className ( ) | ||
| return | string |
The fully qualified name of this class. |
|---|---|---|
public static function className()
{
return get_called_class();
}
Defined in: yii\base\Component::detachBehavior()
Detaches a behavior from the component.
The behavior's yii\base\Behavior::detach() method will be invoked.
| public yii\base\Behavior|null detachBehavior ( $name ) | ||
| $name | string |
The behavior's name. |
| return | yii\base\Behavior|null |
The detached behavior. Null if the behavior does not exist. |
|---|---|---|
public function detachBehavior($name)
{
$this->ensureBehaviors();
if (isset($this->_behaviors[$name])) {
$behavior = $this->_behaviors[$name];
unset($this->_behaviors[$name]);
$behavior->detach();
return $behavior;
}
return null;
}
Defined in: yii\base\Component::detachBehaviors()
Detaches all behaviors from the component.
| public void detachBehaviors ( ) |
public function detachBehaviors()
{
$this->ensureBehaviors();
foreach ($this->_behaviors as $name => $behavior) {
$this->detachBehavior($name);
}
}
Defined in: yii\base\Component::ensureBehaviors()
Makes sure that the behaviors declared in behaviors() are attached to this component.
| public void ensureBehaviors ( ) |
public function ensureBehaviors()
{
if ($this->_behaviors === null) {
$this->_behaviors = [];
foreach ($this->behaviors() as $name => $behavior) {
$this->attachBehaviorInternal($name, $behavior);
}
}
}
Defined in: yii\base\Component::getBehavior()
Returns the named behavior object.
| public yii\base\Behavior|null getBehavior ( $name ) | ||
| $name | string |
The behavior name |
| return | yii\base\Behavior|null |
The behavior object, or null if the behavior does not exist |
|---|---|---|
public function getBehavior($name)
{
$this->ensureBehaviors();
return isset($this->_behaviors[$name]) ? $this->_behaviors[$name] : null;
}
Defined in: yii\base\Component::getBehaviors()
Returns all behaviors attached to this component.
| public yii\base\Behavior[] getBehaviors ( ) | ||
| return | yii\base\Behavior[] |
List of behaviors attached to this component |
|---|---|---|
public function getBehaviors()
{
$this->ensureBehaviors();
return $this->_behaviors;
}
Returns the number of data models in the current page.
| public integer getCount ( ) | ||
| return | integer |
The number of data models in the current page. |
|---|---|---|
public function getCount()
{
return count($this->getModels());
}
Returns the key values associated with the data models.
| public array getKeys ( ) | ||
| return | array |
The list of key values corresponding to $models. Each data model in $models is uniquely identified by the corresponding key value in this array. |
|---|---|---|
public function getKeys()
{
$this->prepare();
return $this->_keys;
}
Returns the data models in the current page.
| public array getModels ( ) | ||
| return | array |
The list of data models in the current page. |
|---|---|---|
public function getModels()
{
$this->prepare();
return $this->_models;
}
Returns the pagination object used by this data provider.
Note that you should call prepare() or getModels() first to get correct values of yii\data\Pagination::$totalCount and yii\data\Pagination::$pageCount.
| public yii\data\Pagination|false getPagination ( ) | ||
| return | yii\data\Pagination|false |
The pagination object. If this is false, it means the pagination is disabled. |
|---|---|---|
public function getPagination()
{
if ($this->_pagination === null) {
$this->setPagination([]);
}
return $this->_pagination;
}
Returns the sorting object used by this data provider.
| public yii\data\Sort|boolean getSort ( ) | ||
| return | yii\data\Sort|boolean |
The sorting object. If this is false, it means the sorting is disabled. |
|---|---|---|
public function getSort()
{
if ($this->_sort === null) {
$this->setSort([]);
}
return $this->_sort;
}
Returns the total number of data models.
When $pagination is false, this returns the same value as $count. Otherwise, it will call prepareTotalCount() to get the count.
| public integer getTotalCount ( ) | ||
| return | integer |
Total number of possible data models. |
|---|---|---|
public function getTotalCount()
{
if ($this->getPagination() === false) {
return $this->getCount();
} elseif ($this->_totalCount === null) {
$this->_totalCount = $this->prepareTotalCount();
}
return $this->_totalCount;
}
Defined in: yii\base\Component::hasEventHandlers()
Returns a value indicating whether there is any handler attached to the named event.
| public boolean hasEventHandlers ( $name ) | ||
| $name | string |
The event name |
| return | boolean |
Whether there is any handler attached to the event. |
|---|---|---|
public function hasEventHandlers($name)
{
$this->ensureBehaviors();
if (!empty($this->_events[$name])) {
return true;
}
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (!empty($handlers) && StringHelper::matchWildcard($wildcard, $name)) {
return true;
}
}
return Event::hasHandlers($this, $name);
}
Defined in: yii\base\Component::hasMethod()
Returns a value indicating whether a method is defined.
A method is defined if:
- the class has a method with the specified name
- an attached behavior has a method with the given name (when
$checkBehaviorsis true).
| public boolean hasMethod ( $name, $checkBehaviors = true ) | ||
| $name | string |
The property name |
| $checkBehaviors | boolean |
Whether to treat behaviors' methods as methods of this component |
| return | boolean |
Whether the method is defined |
|---|---|---|
public function hasMethod($name, $checkBehaviors = true)
{
if (method_exists($this, $name)) {
return true;
} elseif ($checkBehaviors) {
$this->ensureBehaviors();
foreach ($this->_behaviors as $behavior) {
if ($behavior->hasMethod($name)) {
return true;
}
}
}
return false;
}
Defined in: yii\base\Component::hasProperty()
Returns a value indicating whether a property is defined for this component.
A property is defined if:
- the class has a getter or setter method associated with the specified name (in this case, property name is case-insensitive);
- the class has a member variable with the specified name (when
$checkVarsis true); - an attached behavior has a property of the given name (when
$checkBehaviorsis true).
See also:
| public boolean hasProperty ( $name, $checkVars = true, $checkBehaviors = true ) | ||
| $name | string |
The property name |
| $checkVars | boolean |
Whether to treat member variables as properties |
| $checkBehaviors | boolean |
Whether to treat behaviors' properties as properties of this component |
| return | boolean |
Whether the property is defined |
|---|---|---|
public function hasProperty($name, $checkVars = true, $checkBehaviors = true)
{
return $this->canGetProperty($name, $checkVars, $checkBehaviors) || $this->canSetProperty($name, false, $checkBehaviors);
}
Initializes the object.
This method is invoked at the end of the constructor after the object is initialized with the given configuration.
| public void init ( ) |
public function init()
{
parent::init();
if ($this->id === null) {
if (self::$counter > 0) {
$this->id = 'dp-' . self::$counter;
}
self::$counter++;
}
}
Defined in: yii\base\Component::off()
Detaches an existing event handler from this component.
This method is the opposite of on().
Note: in case wildcard pattern is passed for event name, only the handlers registered with this wildcard will be removed, while handlers registered with plain names matching this wildcard will remain.
See also on().
| public boolean off ( $name, $handler = null ) | ||
| $name | string |
Event name |
| $handler | callable|null |
The event handler to be removed. If it is null, all handlers attached to the named event will be removed. |
| return | boolean |
If a handler is found and detached |
|---|---|---|
public function off($name, $handler = null)
{
$this->ensureBehaviors();
if (empty($this->_events[$name]) && empty($this->_eventWildcards[$name])) {
return false;
}
if ($handler === null) {
unset($this->_events[$name], $this->_eventWildcards[$name]);
return true;
}
$removed = false;
// plain event names
if (isset($this->_events[$name])) {
foreach ($this->_events[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_events[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_events[$name] = array_values($this->_events[$name]);
return true;
}
}
// wildcard event names
if (isset($this->_eventWildcards[$name])) {
foreach ($this->_eventWildcards[$name] as $i => $event) {
if ($event[0] === $handler) {
unset($this->_eventWildcards[$name][$i]);
$removed = true;
}
}
if ($removed) {
$this->_eventWildcards[$name] = array_values($this->_eventWildcards[$name]);
// remove empty wildcards to save future redundant regex checks:
if (empty($this->_eventWildcards[$name])) {
unset($this->_eventWildcards[$name]);
}
}
}
return $removed;
}
Defined in: yii\base\Component::on()
Attaches an event handler to an event.
The event handler must be a valid PHP callback. The following are some examples:
function ($event) { ... } // anonymous function
[$object, 'handleClick'] // $object->handleClick()
['Page', 'handleClick'] // Page::handleClick()
'handleClick' // global function handleClick()
The event handler must be defined with the following signature,
function ($event)
where $event is an yii\base\Event object which includes parameters associated with the event.
Since 2.0.14 you can specify event name as a wildcard pattern:
$component->on('event.group.*', function ($event) {
Yii::trace($event->name . ' is triggered.');
});
See also off().
| public void on ( $name, $handler, $data = null, $append = true ) | ||
| $name | string |
The event name |
| $handler | callable |
The event handler |
| $data | mixed |
The data to be passed to the event handler when the event is triggered. When the event handler is invoked, this data can be accessed via yii\base\Event::$data. |
| $append | boolean |
Whether to append new event handler to the end of the existing handler list. If false, the new handler will be inserted at the beginning of the existing handler list. |
public function on($name, $handler, $data = null, $append = true)
{
$this->ensureBehaviors();
if (strpos($name, '*') !== false) {
if ($append || empty($this->_eventWildcards[$name])) {
$this->_eventWildcards[$name][] = [$handler, $data];
} else {
array_unshift($this->_eventWildcards[$name], [$handler, $data]);
}
return;
}
if ($append || empty($this->_events[$name])) {
$this->_events[$name][] = [$handler, $data];
} else {
array_unshift($this->_events[$name], [$handler, $data]);
}
}
Prepares the data models and keys.
This method will prepare the data models and keys that can be retrieved via getModels() and getKeys().
This method will be implicitly called by getModels() and getKeys() if it has not been called before.
| public void prepare ( $forcePrepare = false ) | ||
| $forcePrepare | boolean |
Whether to force data preparation even if it has been done before. |
public function prepare($forcePrepare = false)
{
if ($forcePrepare || $this->_models === null) {
$this->_models = $this->prepareModels();
}
if ($forcePrepare || $this->_keys === null) {
$this->_keys = $this->prepareKeys($this->_models);
}
}
Prepares the keys associated with the currently available data models.
| protected abstract array prepareKeys ( $models ) | ||
| $models | array |
The available data models |
| return | array |
The keys |
|---|---|---|
abstract protected function prepareKeys($models);
Prepares the data models that will be made available in the current page.
| protected abstract array prepareModels ( ) | ||
| return | array |
The available data models |
|---|---|---|
abstract protected function prepareModels();
Returns a value indicating the total number of data models in this data provider.
| protected abstract integer prepareTotalCount ( ) | ||
| return | integer |
Total number of data models in this data provider. |
|---|---|---|
abstract protected function prepareTotalCount();
Refreshes the data provider.
After calling this method, if getModels(), getKeys() or getTotalCount() is called again, they will re-execute the query and return the latest data available.
| public void refresh ( ) |
public function refresh()
{
$this->_totalCount = null;
$this->_models = null;
$this->_keys = null;
}
Sets the key values associated with the data models.
| public void setKeys ( $keys ) | ||
| $keys | array |
The list of key values corresponding to $models. |
public function setKeys($keys)
{
$this->_keys = $keys;
}
Sets the data models in the current page.
| public void setModels ( $models ) | ||
| $models | array |
The models in the current page |
public function setModels($models)
{
$this->_models = $models;
}
Sets the pagination for this data provider.
| public void setPagination ( $value ) | ||
| $value | array|yii\data\Pagination|boolean |
The pagination to be used by this data provider. This can be one of the following:
|
| throws | yii\base\InvalidArgumentException | |
|---|---|---|
public function setPagination($value)
{
if (is_array($value)) {
$config = ['class' => Pagination::className()];
if ($this->id !== null) {
$config['pageParam'] = $this->id . '-page';
$config['pageSizeParam'] = $this->id . '-per-page';
}
$this->_pagination = Yii::createObject(array_merge($config, $value));
} elseif ($value instanceof Pagination || $value === false) {
$this->_pagination = $value;
} else {
throw new InvalidArgumentException('Only Pagination instance, configuration array or false is allowed.');
}
}
Sets the sort definition for this data provider.
| public void setSort ( $value ) | ||
| $value | array|yii\data\Sort|boolean |
The sort definition to be used by this data provider. This can be one of the following:
|
| throws | yii\base\InvalidArgumentException | |
|---|---|---|
public function setSort($value)
{
if (is_array($value)) {
$config = ['class' => Sort::className()];
if ($this->id !== null) {
$config['sortParam'] = $this->id . '-sort';
}
$this->_sort = Yii::createObject(array_merge($config, $value));
} elseif ($value instanceof Sort || $value === false) {
$this->_sort = $value;
} else {
throw new InvalidArgumentException('Only Sort instance, configuration array or false is allowed.');
}
}
Sets the total number of data models.
| public void setTotalCount ( $value ) | ||
| $value | integer |
The total number of data models. |
public function setTotalCount($value)
{
$this->_totalCount = $value;
}
Defined in: yii\base\Component::trigger()
Triggers an event.
This method represents the happening of an event. It invokes all attached handlers for the event including class-level handlers.
| public void trigger ( $name, yii\base\Event $event = null ) | ||
| $name | string |
The event name |
| $event | yii\base\Event|null |
The event instance. If not set, a default yii\base\Event object will be created. |
public function trigger($name, Event $event = null)
{
$this->ensureBehaviors();
$eventHandlers = [];
foreach ($this->_eventWildcards as $wildcard => $handlers) {
if (StringHelper::matchWildcard($wildcard, $name)) {
$eventHandlers[] = $handlers;
}
}
if (!empty($this->_events[$name])) {
$eventHandlers[] = $this->_events[$name];
}
if (!empty($eventHandlers)) {
$eventHandlers = call_user_func_array('array_merge', $eventHandlers);
if ($event === null) {
$event = new Event();
}
if ($event->sender === null) {
$event->sender = $this;
}
$event->handled = false;
$event->name = $name;
foreach ($eventHandlers as $handler) {
$event->data = $handler[1];
call_user_func($handler[0], $event);
// stop further handling if the event is handled
if ($event->handled) {
return;
}
}
}
// invoke class-level attached handlers
Event::trigger($this, $name, $event);
}
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