<?php
namespace Illuminate\Database\Eloquent\Concerns;
use LogicException;
use DateTimeInterface;
use Illuminate\Support\Arr;
use Illuminate\Support\Str;
use Illuminate\Support\Carbon;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Database\Eloquent\Relations\Relation;
use Illuminate\Support\Collection as BaseCollection;
use Illuminate\Database\Eloquent\JsonEncodingException;
trait HasAttributes
{
/**
* The model's attributes.
*
* @var array
*/
protected $attributes = [];
/**
* The model attribute's original state.
*
* @var array
*/
protected $original = [];
/**
* The changed model attributes.
*
* @var array
*/
protected $changes = [];
/**
* The attributes that should be cast to native types.
*
* @var array
*/
protected $casts = [];
/**
* The attributes that should be mutated to dates.
*
* @var array
*/
protected $dates = [];
/**
* The storage format of the model's date columns.
*
* @var string
*/
protected $dateFormat;
/**
* The accessors to append to the model's array form.
*
* @var array
*/
protected $appends = [];
/**
* Indicates whether attributes are snake cased on arrays.
*
* @var bool
*/
public static $snakeAttributes = true;
/**
* The cache of the mutated attributes for each class.
*
* @var array
*/
protected static $mutatorCache = [];
/**
* Convert the model's attributes to an array.
*
* @return array
*/
public function attributesToArray()
{
// If an attribute is a date, we will cast it to a string after converting it
// to a DateTime / Carbon instance. This is so we will get some consistent
// formatting while accessing attributes vs. arraying / JSONing a model.
$attributes = $this->addDateAttributesToArray(
$attributes = $this->getArrayableAttributes()
);
$attributes = $this->addMutatedAttributesToArray(
$attributes, $mutatedAttributes = $this->getMutatedAttributes()
);
// Next we will handle any casts that have been setup for this model and cast
// the values to their appropriate type. If the attribute has a mutator we
// will not perform the cast on those attributes to avoid any confusion.
$attributes = $this->addCastAttributesToArray(
$attributes, $mutatedAttributes
);
// Here we will grab all of the appended, calculated attributes to this model
// as these attributes are not really in the attributes array, but are run
// when we need to array or JSON the model for convenience to the coder.
foreach ($this->getArrayableAppends() as $key) {
$attributes[$key] = $this->mutateAttributeForArray($key, null);
}
return $attributes;
}
/**
* Add the date attributes to the attributes array.
*
* @param array $attributes
* @return array
*/
protected function addDateAttributesToArray(array $attributes)
{
foreach ($this->getDates() as $key) {
if (! isset($attributes[$key])) {
continue;
}
$attributes[$key] = $this->serializeDate(
$this->asDateTime($attributes[$key])
);
}
return $attributes;
}
/**
* Add the mutated attributes to the attributes array.
*
* @param array $attributes
* @param array $mutatedAttributes
* @return array
*/
protected function addMutatedAttributesToArray(array $attributes, array $mutatedAttributes)
{
foreach ($mutatedAttributes as $key) {
// We want to spin through all the mutated attributes for this model and call
// the mutator for the attribute. We cache off every mutated attributes so
// we don't have to constantly check on attributes that actually change.
if (! array_key_exists($key, $attributes)) {
continue;
}
// Next, we will call the mutator for this attribute so that we can get these
// mutated attribute's actual values. After we finish mutating each of the
// attributes we will return this final array of the mutated attributes.
$attributes[$key] = $this->mutateAttributeForArray(
$key, $attributes[$key]
);
}
return $attributes;
}
/**
* Add the casted attributes to the attributes array.
*
* @param array $attributes
* @param array $mutatedAttributes
* @return array
*/
protected function addCastAttributesToArray(array $attributes, array $mutatedAttributes)
{
foreach ($this->getCasts() as $key => $value) {
if (! array_key_exists($key, $attributes) || in_array($key, $mutatedAttributes)) {
continue;
}
// Here we will cast the attribute. Then, if the cast is a date or datetime cast
// then we will serialize the date for the array. This will convert the dates
// to strings based on the date format specified for these Eloquent models.
$attributes[$key] = $this->castAttribute(
$key, $attributes[$key]
);
// If the attribute cast was a date or a datetime, we will serialize the date as
// a string. This allows the developers to customize how dates are serialized
// into an array without affecting how they are persisted into the storage.
if ($attributes[$key] &&
($value === 'date' || $value === 'datetime')) {
$attributes[$key] = $this->serializeDate($attributes[$key]);
}
if ($attributes[$key] && $this->isCustomDateTimeCast($value)) {
$attributes[$key] = $attributes[$key]->format(explode(':', $value, 2)[1]);
}
}
return $attributes;
}
/**
* Get an attribute array of all arrayable attributes.
*
* @return array
*/
protected function getArrayableAttributes()
{
return $this->getArrayableItems($this->attributes);
}
/**
* Get all of the appendable values that are arrayable.
*
* @return array
*/
protected function getArrayableAppends()
{
if (! count($this->appends)) {
return [];
}
return $this->getArrayableItems(
array_combine($this->appends, $this->appends)
);
}
/**
* Get the model's relationships in array form.
*
* @return array
*/
public function relationsToArray()
{
$attributes = [];
foreach ($this->getArrayableRelations() as $key => $value) {
// If the values implements the Arrayable interface we can just call this
// toArray method on the instances which will convert both models and
// collections to their proper array form and we'll set the values.
if ($value instanceof Arrayable) {
$relation = $value->toArray();
}
// If the value is null, we'll still go ahead and set it in this list of
// attributes since null is used to represent empty relationships if
// if it a has one or belongs to type relationships on the models.
elseif (is_null($value)) {
$relation = $value;
}
// If the relationships snake-casing is enabled, we will snake case this
// key so that the relation attribute is snake cased in this returned
// array to the developers, making this consistent with attributes.
if (static::$snakeAttributes) {
$key = Str::snake($key);
}
// If the relation value has been set, we will set it on this attributes
// list for returning. If it was not arrayable or null, we'll not set
// the value on the array because it is some type of invalid value.
if (isset($relation) || is_null($value)) {
$attributes[$key] = $relation;
}
unset($relation);
}
return $attributes;
}
/**
* Get an attribute array of all arrayable relations.
*
* @return array
*/
protected function getArrayableRelations()
{
return $this->getArrayableItems($this->relations);
}
/**
* Get an attribute array of all arrayable values.
*
* @param array $values
* @return array
*/
protected function getArrayableItems(array $values)
{
if (count($this->getVisible()) > 0) {
$values = array_intersect_key($values, array_flip($this->getVisible()));
}
if (count($this->getHidden()) > 0) {
$values = array_diff_key($values, array_flip($this->getHidden()));
}
return $values;
}
/**
* Get an attribute from the model.
*
* @param string $key
* @return mixed
*/
public function getAttribute($key)
{
if (! $key) {
return;
}
// If the attribute exists in the attribute array or has a "get" mutator we will
// get the attribute's value. Otherwise, we will proceed as if the developers
// are asking for a relationship's value. This covers both types of values.
if (array_key_exists($key, $this->attributes) ||
$this->hasGetMutator($key)) {
return $this->getAttributeValue($key);
}
// Here we will determine if the model base class itself contains this given key
// since we don't want to treat any of those methods as relationships because
// they are all intended as helper methods and none of these are relations.
if (method_exists(self::class, $key)) {
return;
}
return $this->getRelationValue($key);
}
/**
* Get a plain attribute (not a relationship).
*
* @param string $key
* @return mixed
*/
public function getAttributeValue($key)
{
$value = $this->getAttributeFromArray($key);
// If the attribute has a get mutator, we will call that then return what
// it returns as the value, which is useful for transforming values on
// retrieval from the model to a form that is more useful for usage.
if ($this->hasGetMutator($key)) {
return $this->mutateAttribute($key, $value);
}
// If the attribute exists within the cast array, we will convert it to
// an appropriate native PHP type dependant upon the associated value
// given with the key in the pair. Dayle made this comment line up.
if ($this->hasCast($key)) {
return $this->castAttribute($key, $value);
}
// If the attribute is listed as a date, we will convert it to a DateTime
// instance on retrieval, which makes it quite convenient to work with
// date fields without having to create a mutator for each property.
if (in_array($key, $this->getDates()) &&
! is_null($value)) {
return $this->asDateTime($value);
}
return $value;
}
/**
* Get an attribute from the $attributes array.
*
* @param string $key
* @return mixed
*/
protected function getAttributeFromArray($key)
{
if (isset($this->attributes[$key])) {
return $this->attributes[$key];
}
}
/**
* Get a relationship.
*
* @param string $key
* @return mixed
*/
public function getRelationValue($key)
{
// If the key already exists in the relationships array, it just means the
// relationship has already been loaded, so we'll just return it out of
// here because there is no need to query within the relations twice.
if ($this->relationLoaded($key)) {
return $this->relations[$key];
}
// If the "attribute" exists as a method on the model, we will just assume
// it is a relationship and will load and return results from the query
// and hydrate the relationship's value on the "relationships" array.
if (method_exists($this, $key)) {
return $this->getRelationshipFromMethod($key);
}
}
/**
* Get a relationship value from a method.
*
* @param string $method
* @return mixed
*
* @throws \LogicException
*/
protected function getRelationshipFromMethod($method)
{
$relation = $this->$method();
if (! $relation instanceof Relation) {
throw new LogicException(sprintf(
'%s::%s must return a relationship instance.', static::class, $method
));
}
return tap($relation->getResults(), function ($results) use ($method) {
$this->setRelation($method, $results);
});
}
/**
* Determine if a get mutator exists for an attribute.
*
* @param string $key
* @return bool
*/
public function hasGetMutator($key)
{
return method_exists($this, 'get'.Str::studly($key).'Attribute');
}
/**
* Get the value of an attribute using its mutator.
*
* @param string $key
* @param mixed $value
* @return mixed
*/
protected function mutateAttribute($key, $value)
{
return $this->{'get'.Str::studly($key).'Attribute'}($value);
}
/**
* Get the value of an attribute using its mutator for array conversion.
*
* @param string $key
* @param mixed $value
* @return mixed
*/
protected function mutateAttributeForArray($key, $value)
{
$value = $this->mutateAttribute($key, $value);
return $value instanceof Arrayable ? $value->toArray() : $value;
}
/**
* Cast an attribute to a native PHP type.
*
* @param string $key
* @param mixed $value
* @return mixed
*/
protected function castAttribute($key, $value)
{
if (is_null($value)) {
return $value;
}
switch ($this->getCastType($key)) {
case 'int':
case 'integer':
return (int) $value;
case 'real':
case 'float':
case 'double':
return $this->fromFloat($value);
case 'decimal':
return $this->asDecimal($value, explode(':', $this->getCasts()[$key], 2)[1]);
case 'string':
return (string) $value;
case 'bool':
case 'boolean':
return (bool) $value;
case 'object':
return $this->fromJson($value, true);
case 'array':
case 'json':
return $this->fromJson($value);
case 'collection':
return new BaseCollection($this->fromJson($value));
case 'date':
return $this->asDate($value);
case 'datetime':
case 'custom_datetime':
return $this->asDateTime($value);
case 'timestamp':
return $this->asTimestamp($value);
default:
return $value;
}
}
/**
* Get the type of cast for a model attribute.
*
* @param string $key
* @return string
*/
protected function getCastType($key)
{
if ($this->isCustomDateTimeCast($this->getCasts()[$key])) {
return 'custom_datetime';
}
if ($this->isDecimalCast($this->getCasts()[$key])) {
return 'decimal';
}
return trim(strtolower($this->getCasts()[$key]));
}
/**
* Determine if the cast type is a custom date time cast.
*
* @param string $cast
* @return bool
*/
protected function isCustomDateTimeCast($cast)
{
return strncmp($cast, 'date:', 5) === 0 ||
strncmp($cast, 'datetime:', 9) === 0;
}
/**
* Determine if the cast type is a decimal cast.
*
* @param string $cast
* @return bool
*/
protected function isDecimalCast($cast)
{
return strncmp($cast, 'decimal:', 8) === 0;
}
/**
* Set a given attribute on the model.
*
* @param string $key
* @param mixed $value
* @return mixed
*/
public function setAttribute($key, $value)
{
// First we will check for the presence of a mutator for the set operation
// which simply lets the developers tweak the attribute as it is set on
// the model, such as "json_encoding" an listing of data for storage.
if ($this->hasSetMutator($key)) {
return $this->setMutatedAttributeValue($key, $value);
}
// If an attribute is listed as a "date", we'll convert it from a DateTime
// instance into a form proper for storage on the database tables using
// the connection grammar's date format. We will auto set the values.
elseif ($value && $this->isDateAttribute($key)) {
$value = $this->fromDateTime($value);
}
if ($this->isJsonCastable($key) && ! is_null($value)) {
$value = $this->castAttributeAsJson($key, $value);
}
// If this attribute contains a JSON ->, we'll set the proper value in the
// attribute's underlying array. This takes care of properly nesting an
// attribute in the array's value in the case of deeply nested items.
if (Str::contains($key, '->')) {
return $this->fillJsonAttribute($key, $value);
}
$this->attributes[$key] = $value;
return $this;
}
/**
* Determine if a set mutator exists for an attribute.
*
* @param string $key
* @return bool
*/
public function hasSetMutator($key)
{
return method_exists($this, 'set'.Str::studly($key).'Attribute');
}
/**
* Set the value of an attribute using its mutator.
*
* @param string $key
* @param mixed $value
* @return mixed
*/
protected function setMutatedAttributeValue($key, $value)
{
return $this->{'set'.Str::studly($key).'Attribute'}($value);
}
/**
* Determine if the given attribute is a date or date castable.
*
* @param string $key
* @return bool
*/
protected function isDateAttribute($key)
{
return in_array($key, $this->getDates()) ||
$this->isDateCastable($key);
}
/**
* Set a given JSON attribute on the model.
*
* @param string $key
* @param mixed $value
* @return $this
*/
public function fillJsonAttribute($key, $value)
{
[$key, $path] = explode('->', $key, 2);
$this->attributes[$key] = $this->asJson($this->getArrayAttributeWithValue(
$path, $key, $value
));
return $this;
}
/**
* Get an array attribute with the given key and value set.
*
* @param string $path
* @param string $key
* @param mixed $value
* @return $this
*/
protected function getArrayAttributeWithValue($path, $key, $value)
{
return tap($this->getArrayAttributeByKey($key), function (&$array) use ($path, $value) {
Arr::set($array, str_replace('->', '.', $path), $value);
});
}
/**
* Get an array attribute or return an empty array if it is not set.
*
* @param string $key
* @return array
*/
protected function getArrayAttributeByKey($key)
{
return isset($this->attributes[$key]) ?
$this->fromJson($this->attributes[$key]) : [];
}
/**
* Cast the given attribute to JSON.
*
* @param string $key
* @param mixed $value
* @return string
*/
protected function castAttributeAsJson($key, $value)
{
$value = $this->asJson($value);
if ($value === false) {
throw JsonEncodingException::forAttribute(
$this, $key, json_last_error_msg()
);
}
return $value;
}
/**
* Encode the given value as JSON.
*
* @param mixed $value
* @return string
*/
protected function asJson($value)
{
return json_encode($value);
}
/**
* Decode the given JSON back into an array or object.
*
* @param string $value
* @param bool $asObject
* @return mixed
*/
public function fromJson($value, $asObject = false)
{
return json_decode($value, ! $asObject);
}
/**
* Decode the given float.
*
* @param mixed $value
* @return mixed
*/
public function fromFloat($value)
{
switch ((string) $value) {
case 'Infinity':
return INF;
case '-Infinity':
return -INF;
case 'NaN':
return NAN;
default:
return (float) $value;
}
}
/**
* Return a decimal as string.
*
* @param float $value
* @param int $decimals
* @return string
*/
protected function asDecimal($value, $decimals)
{
return number_format($value, $decimals, '.', '');
}
/**
* Return a timestamp as DateTime object with time set to 00:00:00.
*
* @param mixed $value
* @return \Illuminate\Support\Carbon
*/
protected function asDate($value)
{
return $this->asDateTime($value)->startOfDay();
}
/**
* Return a timestamp as DateTime object.
*
* @param mixed $value
* @return \Illuminate\Support\Carbon
*/
protected function asDateTime($value)
{
// If this value is already a Carbon instance, we shall just return it as is.
// This prevents us having to re-instantiate a Carbon instance when we know
// it already is one, which wouldn't be fulfilled by the DateTime check.
if ($value instanceof Carbon) {
return $value;
}
// If the value is already a DateTime instance, we will just skip the rest of
// these checks since they will be a waste of time, and hinder performance
// when checking the field. We will just return the DateTime right away.
if ($value instanceof DateTimeInterface) {
return new Carbon(
$value->format('Y-m-d H:i:s.u'), $value->getTimezone()
);
}
// If this value is an integer, we will assume it is a UNIX timestamp's value
// and format a Carbon object from this timestamp. This allows flexibility
// when defining your date fields as they might be UNIX timestamps here.
if (is_numeric($value)) {
return Carbon::createFromTimestamp($value);
}
// If the value is in simply year, month, day format, we will instantiate the
// Carbon instances from that format. Again, this provides for simple date
// fields on the database, while still supporting Carbonized conversion.
if ($this->isStandardDateFormat($value)) {
return Carbon::createFromFormat('Y-m-d', $value)->startOfDay();
}
// Finally, we will just assume this date is in the format used by default on
// the database connection and use that format to create the Carbon object
// that is returned back out to the developers after we convert it here.
return Carbon::createFromFormat(
str_replace('.v', '.u', $this->getDateFormat()), $value
);
}
/**
* Determine if the given value is a standard date format.
*
* @param string $value
* @return bool
*/
protected function isStandardDateFormat($value)
{
return preg_match('/^(\d{4})-(\d{1,2})-(\d{1,2})$/', $value);
}
/**
* Convert a DateTime to a storable string.
*
* @param mixed $value
* @return string|null
*/
public function fromDateTime($value)
{
return empty($value) ? $value : $this->asDateTime($value)->format(
$this->getDateFormat()
);
}
/**
* Return a timestamp as unix timestamp.
*
* @param mixed $value
* @return int
*/
protected function asTimestamp($value)
{
return $this->asDateTime($value)->getTimestamp();
}
/**
* Prepare a date for array / JSON serialization.
*
* @param \DateTimeInterface $date
* @return string
*/
protected function serializeDate(DateTimeInterface $date)
{
return $date->format($this->getDateFormat());
}
/**
* Get the attributes that should be converted to dates.
*
* @return array
*/
public function getDates()
{
$defaults = [static::CREATED_AT, static::UPDATED_AT];
return $this->usesTimestamps()
? array_unique(array_merge($this->dates, $defaults))
: $this->dates;
}
/**
* Get the format for database stored dates.
*
* @return string
*/
public function getDateFormat()
{
return $this->dateFormat ?: $this->getConnection()->getQueryGrammar()->getDateFormat();
}
/**
* Set the date format used by the model.
*
* @param string $format
* @return $this
*/
public function setDateFormat($format)
{
$this->dateFormat = $format;
return $this;
}
/**
* Determine whether an attribute should be cast to a native type.
*
* @param string $key
* @param array|string|null $types
* @return bool
*/
public function hasCast($key, $types = null)
{
if (array_key_exists($key, $this->getCasts())) {
return $types ? in_array($this->getCastType($key), (array) $types, true) : true;
}
return false;
}
/**
* Get the casts array.
*
* @return array
*/
public function getCasts()
{
if ($this->getIncrementing()) {
return array_merge([$this->getKeyName() => $this->getKeyType()], $this->casts);
}
return $this->casts;
}
/**
* Determine whether a value is Date / DateTime castable for inbound manipulation.
*
* @param string $key
* @return bool
*/
protected function isDateCastable($key)
{
return $this->hasCast($key, ['date', 'datetime']);
}
/**
* Determine whether a value is JSON castable for inbound manipulation.
*
* @param string $key
* @return bool
*/
protected function isJsonCastable($key)
{
return $this->hasCast($key, ['array', 'json', 'object', 'collection']);
}
/**
* Get all of the current attributes on the model.
*
* @return array
*/
public function getAttributes()
{
return $this->attributes;
}
/**
* Set the array of model attributes. No checking is done.
*
* @param array $attributes
* @param bool $sync
* @return $this
*/
public function setRawAttributes(array $attributes, $sync = false)
{
$this->attributes = $attributes;
if ($sync) {
$this->syncOriginal();
}
return $this;
}
/**
* Get the model's original attribute values.
*
* @param string|null $key
* @param mixed $default
* @return mixed|array
*/
public function getOriginal($key = null, $default = null)
{
return Arr::get($this->original, $key, $default);
}
/**
* Get a subset of the model's attributes.
*
* @param array|mixed $attributes
* @return array
*/
public function only($attributes)
{
$results = [];
foreach (is_array($attributes) ? $attributes : func_get_args() as $attribute) {
$results[$attribute] = $this->getAttribute($attribute);
}
return $results;
}
/**
* Sync the original attributes with the current.
*
* @return $this
*/
public function syncOriginal()
{
$this->original = $this->attributes;
return $this;
}
/**
* Sync a single original attribute with its current value.
*
* @param string $attribute
* @return $this
*/
public function syncOriginalAttribute($attribute)
{
return $this->syncOriginalAttributes($attribute);
}
/**
* Sync multiple original attribute with their current values.
*
* @param array|string $attributes
* @return $this
*/
public function syncOriginalAttributes($attributes)
{
$attributes = is_array($attributes) ? $attributes : func_get_args();
foreach ($attributes as $attribute) {
$this->original[$attribute] = $this->attributes[$attribute];
}
return $this;
}
/**
* Sync the changed attributes.
*
* @return $this
*/
public function syncChanges()
{
$this->changes = $this->getDirty();
return $this;
}
/**
* Determine if the model or given attribute(s) have been modified.
*
* @param array|string|null $attributes
* @return bool
*/
public function isDirty($attributes = null)
{
return $this->hasChanges(
$this->getDirty(), is_array($attributes) ? $attributes : func_get_args()
);
}
/**
* Determine if the model or given attribute(s) have remained the same.
*
* @param array|string|null $attributes
* @return bool
*/
public function isClean($attributes = null)
{
return ! $this->isDirty(...func_get_args());
}
/**
* Determine if the model or given attribute(s) have been modified.
*
* @param array|string|null $attributes
* @return bool
*/
public function wasChanged($attributes = null)
{
return $this->hasChanges(
$this->getChanges(), is_array($attributes) ? $attributes : func_get_args()
);
}
/**
* Determine if the given attributes were changed.
*
* @param array $changes
* @param array|string|null $attributes
* @return bool
*/
protected function hasChanges($changes, $attributes = null)
{
// If no specific attributes were provided, we will just see if the dirty array
// already contains any attributes. If it does we will just return that this
// count is greater than zero. Else, we need to check specific attributes.
if (empty($attributes)) {
return count($changes) > 0;
}
// Here we will spin through every attribute and see if this is in the array of
// dirty attributes. If it is, we will return true and if we make it through
// all of the attributes for the entire array we will return false at end.
foreach (Arr::wrap($attributes) as $attribute) {
if (array_key_exists($attribute, $changes)) {
return true;
}
}
return false;
}
/**
* Get the attributes that have been changed since last sync.
*
* @return array
*/
public function getDirty()
{
$dirty = [];
foreach ($this->getAttributes() as $key => $value) {
if (! $this->originalIsEquivalent($key, $value)) {
$dirty[$key] = $value;
}
}
return $dirty;
}
/**
* Get the attributes that were changed.
*
* @return array
*/
public function getChanges()
{
return $this->changes;
}
/**
* Determine if the new and old values for a given key are equivalent.
*
* @param string $key
* @param mixed $current
* @return bool
*/
protected function originalIsEquivalent($key, $current)
{
if (! array_key_exists($key, $this->original)) {
return false;
}
$original = $this->getOriginal($key);
if ($current === $original) {
return true;
} elseif (is_null($current)) {
return false;
} elseif ($this->isDateAttribute($key)) {
return $this->fromDateTime($current) ===
$this->fromDateTime($original);
} elseif ($this->hasCast($key)) {
return $this->castAttribute($key, $current) ===
$this->castAttribute($key, $original);
}
return is_numeric($current) && is_numeric($original)
&& strcmp((string) $current, (string) $original) === 0;
}
/**
* Append attributes to query when building a query.
*
* @param array|string $attributes
* @return $this
*/
public function append($attributes)
{
$this->appends = array_unique(
array_merge($this->appends, is_string($attributes) ? func_get_args() : $attributes)
);
return $this;
}
/**
* Set the accessors to append to model arrays.
*
* @param array $appends
* @return $this
*/
public function setAppends(array $appends)
{
$this->appends = $appends;
return $this;
}
/**
* Get the mutated attributes for a given instance.
*
* @return array
*/
public function getMutatedAttributes()
{
$class = static::class;
if (! isset(static::$mutatorCache[$class])) {
static::cacheMutatedAttributes($class);
}
return static::$mutatorCache[$class];
}
/**
* Extract and cache all the mutated attributes of a class.
*
* @param string $class
* @return void
*/
public static function cacheMutatedAttributes($class)
{
static::$mutatorCache[$class] = collect(static::getMutatorMethods($class))->map(function ($match) {
return lcfirst(static::$snakeAttributes ? Str::snake($match) : $match);
})->all();
}
/**
* Get all of the attribute mutator methods.
*
* @param mixed $class
* @return array
*/
protected static function getMutatorMethods($class)
{
preg_match_all('/(?<=^|;)get([^;]+?)Attribute(;|$)/', implode(';', get_class_methods($class)), $matches);
return $matches[1];
}
}