ArrayableTrait::extractFieldsFor() - Code Metrics - Inspection of "fix 'filters' unit tests" - yiisoft/yii2 - Measure and Improve Code Quality continuously with Scrutinizer

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Push — 2.1 ( 0cb910...fafa40 )

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created 2018-02-27 22:10 UTC

ArrayableTrait::extractFieldsFor() A

↳ Parent: ArrayableTrait

Complexity

Conditions	3
Paths	3

Size

Total Lines	12
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	4
CRAP Score	3.3332

Importance

Changes

Metric	Value
dl	0
loc	12
ccs	4
cts	6
cp	0.6667
rs	9.4285
c	0
b	0
f	0
cc	3
eloc	6
nc	3
nop	2
crap	3.3332

<?php
/**
 * @link http://www.yiiframework.com/
 * @copyright Copyright (c) 2008 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

namespace yii\base;

use Yii;
use yii\helpers\ArrayHelper;
use yii\web\Link;
use yii\web\Linkable;

/**
 * ArrayableTrait provides a common implementation of the [[Arrayable]] interface.
 *
 * ArrayableTrait implements [[toArray()]] by respecting the field definitions as declared
 * in [[fields()]] and [[extraFields()]].
 *
 * @author Qiang Xue <[email protected]>
 * @since 2.0
 */
trait ArrayableTrait
{
    /**
     * 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 ($model, $field) {
     *     // 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 the privilege of the current application user,
     * you may return different sets of visible fields or filter out some fields.
     *
     * The default implementation of this method returns the public object member variables indexed by themselves.
     *
     * @return array the list of field names or field definitions.
     * @see toArray()
     */
    public function fields()
    {
        $fields = array_keys(Yii::getObjectVars($this));
        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.
     *
     * You may override this method to return a list of expandable fields based on some context information
     * (e.g. the current application user).
     *
     * @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 extraFields()
    {
        return [];
    }

    /**
     * Converts the model into an array.
     *
     * This method will first identify which fields to be included in the resulting array by calling [[resolveFields()]].
     * It will then turn the model into an array with these fields. If `$recursive` is true,
     * any embedded objects will also be converted into arrays.
     * When embeded objects are [[Arrayable]], their respective nested fields will be extracted and passed to [[toArray()]].
     *
     * If the model implements the [[Linkable]] interface, the resulting array will also have a `_link` element
     * which refers to a list of links as specified by the interface.
     *
     * @param array $fields the fields being requested.
     * If empty or if it contains '*', all fields as specified by [[fields()]] will be returned.
     * Fields can be nested, separated with dots (.). e.g.: item.field.sub-field
     * `$recursive` must be true for nested fields to be extracted. If `$recursive` is false, only the root fields will be extracted.
     * @param array $expand the additional fields being requested for exporting. Only fields declared in [[extraFields()]]
     * will be considered.
     * Expand can also be nested, separated with dots (.). e.g.: item.expand1.expand2
     * `$recursive` must be true for nested expands to be extracted. If `$recursive` is false, only the root expands will be extracted.
     * @param bool $recursive whether to recursively return array representation of embedded objects.
     * @return array the array representation of the object
     */
    public function toArray(array $fields = [], array $expand = [], $recursive = true)
    {
        $data = [];
        foreach ($this->resolveFields($fields, $expand) as $field => $definition) {
            $attribute = is_string($definition) ? $this->$definition : $definition($this, $field);

            if ($recursive) {
                $nestedFields = $this->extractFieldsFor($fields, $field);
                $nestedExpand = $this->extractFieldsFor($expand, $field);
                if ($attribute instanceof Arrayable) {
                    $attribute = $attribute->toArray($nestedFields, $nestedExpand);
                } elseif (is_array($attribute)) {
                    $attribute = array_map(
                        function ($item) use ($nestedFields, $nestedExpand) {
                            if ($item instanceof Arrayable) {
                                return $item->toArray($nestedFields, $nestedExpand);
                            }
                            return $item;
                        },
                        $attribute
                    );
                }
            }
            $data[$field] = $attribute;
        }

        if ($this instanceof Linkable) {
            $data['_links'] = Link::serialize($this->getLinks());
        }

        return $recursive ? ArrayHelper::toArray($data) : $data;
    }

    /**
     * Extracts the root field names from nested fields.
     * Nested fields are separated with dots (.). e.g: "item.id"
     * The previous example would extract "item".
     *
     * @param array $fields The fields requested for extraction
     * @return array root fields extracted from the given nested fields
     * @since 2.0.14
     */
    protected function extractRootFields(array $fields)
    {
        $result = [];

        foreach ($fields as $field) {
            $result[] = current(explode('.', $field, 2));
        }

        if (in_array('*', $result, true)) {
            $result = [];
        }

        return array_unique($result);
    }

    /**
     * Extract nested fields from a fields collection for a given root field
     * Nested fields are separated with dots (.). e.g: "item.id"
     * The previous example would extract "id".
     *
     * @param array $fields The fields requested for extraction
     * @param string $rootField The root field for which we want to extract the nested fields
     * @return array nested fields extracted for the given field
     * @since 2.0.14
     */
    protected function extractFieldsFor(array $fields, $rootField)
    {
        $result = [];

        foreach ($fields as $field) {
            if (0 === strpos($field, "{$rootField}.")) {
                $result[] = preg_replace('/^' . preg_quote($rootField, '/') . '\./i', '', $field);
            }
        }

        return array_unique($result);
    }

    /**
     * Determines which fields can be returned by [[toArray()]].
     * This method will first extract the root fields from the given fields.
     * Then it will check the requested root fields against those declared in [[fields()]] and [[extraFields()]]
     * 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)
    {
        $fields = $this->extractRootFields($fields);
        $expand = $this->extractRootFields($expand);
        $result = [];

        foreach ($this->fields() as $field => $definition) {
            if (is_int($field)) {
                $field = $definition;
            }
            if (empty($fields) || in_array($field, $fields, true)) {
                $result[$field] = $definition;
            }
        }

        if (empty($expand)) {
            return $result;
        }

        foreach ($this->extraFields() as $field => $definition) {
            if (is_int($field)) {
                $field = $definition;
            }
            if (in_array($field, $expand, true)) {
                $result[$field] = $definition;
            }
        }

        return $result;
    }
}


1		<?php
2		/**
3		* @link http://www.yiiframework.com/
4		* @copyright Copyright (c) 2008 Yii Software LLC
5		* @license http://www.yiiframework.com/license/
6		*/
7
8		namespace yii\base;
9
10		use Yii;
11		use yii\helpers\ArrayHelper;
12		use yii\web\Link;
13		use yii\web\Linkable;
14
15		/**
16		* ArrayableTrait provides a common implementation of the [[Arrayable]] interface.
17		*
18		* ArrayableTrait implements [[toArray()]] by respecting the field definitions as declared
19		* in [[fields()]] and [[extraFields()]].
20		*
21		* @author Qiang Xue <[email protected]>
22		* @since 2.0
23		*/
24		trait ArrayableTrait
25		{
26		/**
27		* Returns the list of fields that should be returned by default by [[toArray()]] when no specific fields are specified.
28		*
29		* A field is a named element in the returned array by [[toArray()]].
30		*
31		* This method should return an array of field names or field definitions.
32		* If the former, the field name will be treated as an object property name whose value will be used
33		* as the field value. If the latter, the array key should be the field name while the array value should be
34		* the corresponding field definition which can be either an object property name or a PHP callable
35		* returning the corresponding field value. The signature of the callable should be:
36		*
37		* ```php
38		* function ($model, $field) {
39		* // return field value
40		* }
41		* ```
42		*
43		* For example, the following code declares four fields:
44		*
45		* - `email`: the field name is the same as the property name `email`;
46		* - `firstName` and `lastName`: the field names are `firstName` and `lastName`, and their
47		* values are obtained from the `first_name` and `last_name` properties;
48		* - `fullName`: the field name is `fullName`. Its value is obtained by concatenating `first_name`
49		* and `last_name`.
50		*
51		* ```php
52		* return [
53		* 'email',
54		* 'firstName' => 'first_name',
55		* 'lastName' => 'last_name',
56		* 'fullName' => function () {
57		* return $this->first_name . ' ' . $this->last_name;
58		* },
59		* ];
60		* ```
61		*
62		* In this method, you may also want to return different lists of fields based on some context
63		* information. For example, depending on the privilege of the current application user,
64		* you may return different sets of visible fields or filter out some fields.
65		*
66		* The default implementation of this method returns the public object member variables indexed by themselves.
67		*
68		* @return array the list of field names or field definitions.
69		* @see toArray()
70		*/
71	1	public function fields()
72		{
73	1	$fields = array_keys(Yii::getObjectVars($this));
74	1	return array_combine($fields, $fields);
75		}
76
77		/**
78		* Returns the list of fields that can be expanded further and returned by [[toArray()]].
79		*
80		* This method is similar to [[fields()]] except that the list of fields returned
81		* by this method are not returned by default by [[toArray()]]. Only when field names
82		* to be expanded are explicitly specified when calling [[toArray()]], will their values
83		* be exported.
84		*
85		* The default implementation returns an empty array.
86		*
87		* You may override this method to return a list of expandable fields based on some context information
88		* (e.g. the current application user).
89		*
90		* @return array the list of expandable field names or field definitions. Please refer
91		* to [[fields()]] on the format of the return value.
92		* @see toArray()
93		* @see fields()
94		*/
95		public function extraFields()
96		{
97		return [];
98		}
99
100		/**
101		* Converts the model into an array.
102		*
103		* This method will first identify which fields to be included in the resulting array by calling [[resolveFields()]].
104		* It will then turn the model into an array with these fields. If `$recursive` is true,
105		* any embedded objects will also be converted into arrays.
106		* When embeded objects are [[Arrayable]], their respective nested fields will be extracted and passed to [[toArray()]].
107		*
108		* If the model implements the [[Linkable]] interface, the resulting array will also have a `_link` element
109		* which refers to a list of links as specified by the interface.
110		*
111		* @param array $fields the fields being requested.
112		* If empty or if it contains '*', all fields as specified by [[fields()]] will be returned.
113		* Fields can be nested, separated with dots (.). e.g.: item.field.sub-field
114		* `$recursive` must be true for nested fields to be extracted. If `$recursive` is false, only the root fields will be extracted.
115		* @param array $expand the additional fields being requested for exporting. Only fields declared in [[extraFields()]]
116		* will be considered.
117		* Expand can also be nested, separated with dots (.). e.g.: item.expand1.expand2
118		* `$recursive` must be true for nested expands to be extracted. If `$recursive` is false, only the root expands will be extracted.
119		* @param bool $recursive whether to recursively return array representation of embedded objects.
120		* @return array the array representation of the object
121		*/
122	3	public function toArray(array $fields = [], array $expand = [], $recursive = true)
123		{
124	3	$data = [];
125	3	foreach ($this->resolveFields($fields, $expand) as $field => $definition) {
126	3	$attribute = is_string($definition) ? $this->$definition : $definition($this, $field);
127
128	3	if ($recursive) {
129	3	$nestedFields = $this->extractFieldsFor($fields, $field);
130	3	$nestedExpand = $this->extractFieldsFor($expand, $field);
131	3	if ($attribute instanceof Arrayable) {
132		$attribute = $attribute->toArray($nestedFields, $nestedExpand);
133	3	} elseif (is_array($attribute)) {
134		$attribute = array_map(
135		function ($item) use ($nestedFields, $nestedExpand) {
136		if ($item instanceof Arrayable) {
137		return $item->toArray($nestedFields, $nestedExpand);
138		}
139		return $item;
140		},
141		$attribute
142		);
143		}
144		}
145	3	$data[$field] = $attribute;
146		}
147
148	3	if ($this instanceof Linkable) {
149		$data['_links'] = Link::serialize($this->getLinks());
150		}
151
152	3	return $recursive ? ArrayHelper::toArray($data) : $data;
153		}
154
155		/**
156		* Extracts the root field names from nested fields.
157		* Nested fields are separated with dots (.). e.g: "item.id"
158		* The previous example would extract "item".
159		*
160		* @param array $fields The fields requested for extraction
161		* @return array root fields extracted from the given nested fields
162		* @since 2.0.14
163		*/
164	3	protected function extractRootFields(array $fields)
165		{
166	3	$result = [];
167
168	3	foreach ($fields as $field) {
169		$result[] = current(explode('.', $field, 2));
170		}
171
172	3	if (in_array('*', $result, true)) {
173		$result = [];
174		}
175
176	3	return array_unique($result);
177		}
178
179		/**
180		* Extract nested fields from a fields collection for a given root field
181		* Nested fields are separated with dots (.). e.g: "item.id"
182		* The previous example would extract "id".
183		*
184		* @param array $fields The fields requested for extraction
185		* @param string $rootField The root field for which we want to extract the nested fields
186		* @return array nested fields extracted for the given field
187		* @since 2.0.14
188		*/
189	3	protected function extractFieldsFor(array $fields, $rootField)
190		{
191	3	$result = [];
192
193	3	foreach ($fields as $field) {
194		if (0 === strpos($field, "{$rootField}.")) {
195		$result[] = preg_replace('/^' . preg_quote($rootField, '/') . '\./i', '', $field);
196		}
197		}
198
199	3	return array_unique($result);
200		}
201
202		/**
203		* Determines which fields can be returned by [[toArray()]].
204		* This method will first extract the root fields from the given fields.
205		* Then it will check the requested root fields against those declared in [[fields()]] and [[extraFields()]]
206		* to determine which fields can be returned.
207		* @param array $fields the fields being requested for exporting
208		* @param array $expand the additional fields being requested for exporting
209		* @return array the list of fields to be exported. The array keys are the field names, and the array values
210		* are the corresponding object property names or PHP callables returning the field values.
211		*/
212	3	protected function resolveFields(array $fields, array $expand)
213		{
214	3	$fields = $this->extractRootFields($fields);
215	3	$expand = $this->extractRootFields($expand);
216	3	$result = [];
217
218	3	foreach ($this->fields() as $field => $definition) {
219	3	if (is_int($field)) {
220		$field = $definition;
221		}
222	3	if (empty($fields) \|\| in_array($field, $fields, true)) {
223	3	$result[$field] = $definition;
224		}
225		}
226
227	3	if (empty($expand)) {
228	3	return $result;
229		}
230
231		foreach ($this->extraFields() as $field => $definition) {
232		if (is_int($field)) {
233		$field = $definition;
234		}
235		if (in_array($field, $expand, true)) {
236		$result[$field] = $definition;
237		}
238		}
239
240		return $result;
241		}
242		}
243

yiisoft / yii2

Push — 2.1 ( 0cb910...fafa40 )

ArrayableTrait::extractFieldsFor() A

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