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Qiang Xue
2014-02-28 08:34:51 -05:00
parent 9f37e133e3
commit 9beba31fc0
3 changed files with 171 additions and 26 deletions
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122
framework/base/Model.php
View File

@@ -13,6 +13,7 @@ use ArrayObject;
use ArrayIterator;
use ReflectionClass;
use IteratorAggregate;
use yii\helpers\ArrayHelper;
use yii\helpers\Inflector;
use yii\validators\RequiredValidator;
use yii\validators\Validator;
@@ -788,14 +789,131 @@ class Model extends Component implements IteratorAggregate, ArrayAccess, Arrayab
return $valid;
}
/**
* Returns the list of fields that should be returned by default by [[toArray()]] when no specific fields are specified.
*
* A field is a named element in the returned array by [[toArray()]].
*
* This method should return an array of field names or field definitions.
* If the former, the field name will be treated as an object property name whose value will be used
* as the field value. If the latter, the array key should be the field name while the array value should be
* the corresponding field definition which can be either an object property name or a PHP callable
* returning the corresponding field value. The signature of the callable should be:
*
* ```php
* function ($field, $model) {
* // return field value
* }
* ```
*
* For example, the following code declares four fields:
*
* - `email`: the field name is the same as the property name `email`;
* - `firstName` and `lastName`: the field names are `firstName` and `lastName`, and their
* values are obtained from the `first_name` and `last_name` properties;
* - `fullName`: the field name is `fullName`. Its value is obtained by concatenating `first_name`
* and `last_name`.
*
* ```php
* return [
* 'email',
* 'firstName' => 'first_name',
* 'lastName' => 'last_name',
* 'fullName' => function () {
* return $this->first_name . ' ' . $this->last_name;
* },
* ];
* ```
*
* In this method, you may also want to return different lists of fields based on some context
* information. For example, depending on privilege of the current application user, you may return different
* sets of visible fields.
*
* The default implementation of this method returns [[attributes()]] indexed by the same attribute names.
*
* @return array the list of field names or field definitions.
* @see toArray()
*/
public function fields()
{
$fields = $this->attributes();
return array_combine($fields, $fields);
}
/**
* Returns the list of fields that can be expanded further and returned by [[toArray()]].
*
* This method is similar to [[fields()]] except that the list of fields returned
* by this method are not returned by default by [[toArray()]]. Only when field names
* to be expanded are explicitly specified when calling [[toArray()]], will their values
* be exported.
*
* The default implementation returns an empty array.
*
* @return array the list of expandable field names or field definitions. Please refer
* to [[fields()]] on the format of the return value.
* @see toArray()
* @see fields()
*/
public function expandableFields()
{
return [];
}
/**
* Converts the object into an array.
* The default implementation will return [[attributes]].
* @param array $fields the fields being requested. If empty, all fields as specified by [[fields()]] will be returned.
* @param array $expand the additional fields being requested for exporting. Only fields declared in [[expandableFields()]]
* will be considered.
* @param boolean $recursive whether to recursively return array representation of embedded objects.
* @return array the array representation of the object
*/
public function toArray()
public function toArray(array $fields = [], array $expand = [], $recursive = true)
{
return $this->getAttributes();
$data = [];
foreach ($this->resolveFields($fields, $expand) as $field => $definition) {
$data[$field] = is_string($definition) ? $this->$definition : call_user_func($definition, $field, $this);
}
return $recursive ? ArrayHelper::toArray($data) : $data;
}
/**
* Determines which fields can be returned by [[toArray()]].
* This method will check the requested fields against those declared in [[fields()]] and [[expandableFields()]]
* to determine which fields can be returned.
* @param array $fields the fields being requested for exporting
* @param array $expand the additional fields being requested for exporting
* @return array the list of fields to be exported. The array keys are the field names, and the array values
* are the corresponding object property names or PHP callables returning the field values.
*/
protected function resolveFields(array $fields, array $expand)
{
$result = [];
foreach ($this->fields() as $field => $definition) {
if (is_integer($field)) {
$field = $definition;
}
if (empty($fields) || in_array($field, $fields, true)) {
$result[$field] = $definition;
}
}
if (empty($expand)) {
return $result;
}
foreach ($this->expandableFields() as $field => $definition) {
if (is_integer($field)) {
$field = $definition;
}
if (in_array($field, $expand, true)) {
$result[$field] = $definition;
}
}
return $result;
}
/**

24
framework/db/BaseActiveRecord.php
View File

@@ -19,8 +19,6 @@ use yii\base\InvalidCallException;
/**
* ActiveRecord is the base class for classes representing relational data in terms of objects.
*
* @include @yii/db/ActiveRecord.md
*
* @property array $dirtyAttributes The changed attribute values (name-value pairs). This property is
* read-only.
* @property boolean $isNewRecord Whether the record is new and should be inserted when calling [[save()]].
@@ -1346,4 +1344,26 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
return $this->generateAttributeLabel($attribute);
}
/**
* @inheritdoc
*
* The default implementation returns the names of the columns whose values have been populated into this record.
*/
public function fields()
{
$fields = array_keys($this->_attributes);
return array_combine($fields, $fields);
}
/**
* @inheritdoc
*
* The default implementation returns the names of the relations that have been populated into this record.
*/
public function expandableFields()
{
$fields = array_keys($this->getRelatedRecords());
return array_combine($fields, $fields);
}
}

51
framework/helpers/BaseArrayHelper.php
View File

@@ -58,35 +58,42 @@ class BaseArrayHelper
*/
public static function toArray($object, $properties = [], $recursive = true)
{
if (!empty($properties) && is_object($object)) {
$className = get_class($object);
if (!empty($properties[$className])) {
$result = [];
foreach ($properties[$className] as $key => $name) {
if (is_int($key)) {
$result[$name] = $object->$name;
} else {
$result[$key] = static::getValue($object, $name);
if (is_array($object)) {
if ($recursive) {
foreach ($object as $key => $value) {
if (is_array($value) || is_object($value)) {
$object[$key] = static::toArray($value, true);
}
}
return $result;
}
}
if ($object instanceof Arrayable) {
$object = $object->toArray();
if (!$recursive) {
return $object;
return $object;
} elseif (is_object($object)) {
if (!empty($properties)) {
$className = get_class($object);
if (!empty($properties[$className])) {
$result = [];
foreach ($properties[$className] as $key => $name) {
if (is_int($key)) {
$result[$name] = $object->$name;
} else {
$result[$key] = static::getValue($object, $name);
}
}
return $recursive ? static::toArray($result) : $result;
}
}
}
$result = [];
foreach ($object as $key => $value) {
if ($recursive && (is_array($value) || is_object($value))) {
$result[$key] = static::toArray($value, true);
if ($object instanceof Arrayable) {
$result = $object->toArray();
} else {
$result[$key] = $value;
$result = [];
foreach ($object as $key => $value) {
$result[$key] = $value;
}
}
return $recursive ? static::toArray($result) : $result;
} else {
return [$object];
}
return $result;
}
/**