ExistValidator::applyTableAlias() - Code Metrics - Inspection of "fix code to match '2.1' requirements" - yiisoft/yii2 - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — 2.1 ( 481970...56545c )

unknown

created 2018-02-25 16:43 UTC

ExistValidator::applyTableAlias() B

↳ Parent: ExistValidator

Complexity

Conditions	4
Paths	6

Size

Total Lines	22
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	13
CRAP Score	4

Importance

Changes

Metric	Value
dl	0
loc	22
rs	8.9197
c	0
b	0
f	0
ccs	13
cts	13
cp	1
cc	4
eloc	14
nc	6
nop	3
crap	4

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

namespace yii\validators;

use Yii;
use yii\base\InvalidConfigException;
use yii\base\Model;
use yii\db\ActiveQuery;
use yii\db\ActiveRecord;
use yii\db\QueryInterface;

/**
 * ExistValidator validates that the attribute value exists in a table.
 *
 * ExistValidator checks if the value being validated can be found in the table column specified by
 * the ActiveRecord class [[targetClass]] and the attribute [[targetAttribute]].
 *
 * This validator is often used to verify that a foreign key contains a value
 * that can be found in the foreign table.
 *
 * The following are examples of validation rules using this validator:
 *
 * ```php
 * // a1 needs to exist
 * ['a1', 'exist']
 * // a1 needs to exist, but its value will use a2 to check for the existence
 * ['a1', 'exist', 'targetAttribute' => 'a2']
 * // a1 and a2 need to exist together, and they both will receive error message
 * [['a1', 'a2'], 'exist', 'targetAttribute' => ['a1', 'a2']]
 * // a1 and a2 need to exist together, only a1 will receive error message
 * ['a1', 'exist', 'targetAttribute' => ['a1', 'a2']]
 * // a1 needs to exist by checking the existence of both a2 and a3 (using a1 value)
 * ['a1', 'exist', 'targetAttribute' => ['a2', 'a1' => 'a3']]
 * ```
 *
 * @author Qiang Xue <[email protected]>
 * @since 2.0
 */
class ExistValidator extends Validator
{
    /**
     * @var string the name of the ActiveRecord class that should be used to validate the existence
     * of the current attribute value. If not set, it will use the ActiveRecord class of the attribute being validated.
     * @see targetAttribute
     */
    public $targetClass;
    /**
     * @var string|array the name of the ActiveRecord attribute that should be used to
     * validate the existence of the current attribute value. If not set, it will use the name
     * of the attribute currently being validated. You may use an array to validate the existence
     * of multiple columns at the same time. The array key is the name of the attribute with the value to validate,
     * the array value is the name of the database field to search.
     */
    public $targetAttribute;
    /**
     * @var string the name of the relation that should be used to validate the existence of the current attribute value
     * This param overwrites $targetClass and $targetAttribute
     * @since 2.0.14
     */
    public $targetRelation;
    /**
     * @var string|array|\Closure additional filter to be applied to the DB query used to check the existence of the attribute value.
     * This can be a string or an array representing the additional query condition (refer to [[\yii\db\Query::where()]]
     * on the format of query condition), or an anonymous function with the signature `function ($query)`, where `$query`
     * is the [[\yii\db\Query|Query]] object that you can modify in the function.
     */
    public $filter;
    /**
     * @var bool whether to allow array type attribute.
     */
    public $allowArray = false;
    /**
     * @var string and|or define how target attributes are related
     * @since 2.0.11
     */
    public $targetAttributeJunction = 'and';
    /**
     * @var bool whether this validator is forced to always use master DB
     * @since 2.0.14
     */
    public $forceMasterDb = true;


    /**
     * {@inheritdoc}
     */
    public function init()
    {
        parent::init();
        if ($this->message === null) {
            $this->message = Yii::t('yii', '{attribute} is invalid.');
        }
    }

    /**
     * {@inheritdoc}
     */
    public function validateAttribute($model, $attribute)
    {
        if (!empty($this->targetRelation)) {
            $this->checkTargetRelationExistence($model, $attribute);
        } else {
            $this->checkTargetAttributeExistence($model, $attribute);
        }
    }

    /**
     * Validates existence of the current attribute based on relation name
     * @param \yii\db\ActiveRecord $model the data model to be validated
     * @param string $attribute the name of the attribute to be validated.
     */
    private function checkTargetRelationExistence($model, $attribute)
    {
        $exists = false;
        /** @var ActiveQuery $relationQuery */
        $relationQuery = $model->{'get' . ucfirst($this->targetRelation)}();

        if ($this->filter instanceof \Closure) {
            call_user_func($this->filter, $relationQuery);
        } elseif ($this->filter !== null) {
            $relationQuery->andWhere($this->filter);
        }

        if ($this->forceMasterDb && method_exists($model::getDb(), 'useMaster')) {
            $model::getDb()->useMaster(function() use ($relationQuery, &$exists) {
                $exists = $relationQuery->exists();
            });
        } else {
            $exists = $relationQuery->exists();
        }


        if (!$exists) {
            $this->addError($model, $attribute, $this->message);
        }
    }

    /**
     * Validates existence of the current attribute based on targetAttribute
     * @param \yii\base\Model $model the data model to be validated
     * @param string $attribute the name of the attribute to be validated.
     */
    private function checkTargetAttributeExistence($model, $attribute)
    {
        $targetAttribute = $this->targetAttribute === null ? $attribute : $this->targetAttribute;
        $params = $this->prepareConditions($targetAttribute, $model, $attribute);
        $conditions = [$this->targetAttributeJunction == 'or' ? 'or' : 'and'];

        if (!$this->allowArray) {
            foreach ($params as $key => $value) {
                if (is_array($value)) {
                    $this->addError($model, $attribute, Yii::t('yii', '{attribute} is invalid.'));

                    return;
                }
                $conditions[] = [$key => $value];
            }
        } else {
            $conditions[] = $params;
        }

        $targetClass = $this->targetClass === null ? get_class($model) : $this->targetClass;
        $query = $this->createQuery($targetClass, $conditions);

        if (!$this->valueExists($targetClass, $query, $model->$attribute)) {
            $this->addError($model, $attribute, $this->message);
        }
    }

    /**
     * Processes attributes' relations described in $targetAttribute parameter into conditions, compatible with
     * [[\yii\db\Query::where()|Query::where()]] key-value format.
     *
     * @param $targetAttribute array|string $attribute the name of the ActiveRecord attribute that should be used to
     * validate the existence of the current attribute value. If not set, it will use the name
     * of the attribute currently being validated. You may use an array to validate the existence
     * of multiple columns at the same time. The array key is the name of the attribute with the value to validate,
     * the array value is the name of the database field to search.
     * If the key and the value are the same, you can just specify the value.
     * @param \yii\base\Model $model the data model to be validated
     * @param string $attribute the name of the attribute to be validated in the $model
     * @return array conditions, compatible with [[\yii\db\Query::where()|Query::where()]] key-value format.
     * @throws InvalidConfigException
     */
    private function prepareConditions($targetAttribute, $model, $attribute)
    {
        if (is_array($targetAttribute)) {
            if ($this->allowArray) {
                throw new InvalidConfigException('The "targetAttribute" property must be configured as a string.');
            }
            $conditions = [];
            foreach ($targetAttribute as $k => $v) {
                $conditions[$v] = is_int($k) ? $model->$v : $model->$k;
            }
        } else {
            $conditions = [$targetAttribute => $model->$attribute];
        }

        $targetModelClass = $this->getTargetClass($model);
        if (!is_subclass_of($targetModelClass, 'yii\db\ActiveRecord')) {
            return $conditions;
        }

        /** @var ActiveRecord $targetModelClass */
        return $this->applyTableAlias($targetModelClass::find(), $conditions);
    }

    /**
     * @param Model $model the data model to be validated
     * @return string Target class name
     */
    private function getTargetClass($model)
    {
        return $this->targetClass === null ? get_class($model) : $this->targetClass;
    }

    /**
     * {@inheritdoc}
     */
    protected function validateValue($value)
    {
        if ($this->targetClass === null) {
            throw new InvalidConfigException('The "targetClass" property must be set.');
        }
        if (!is_string($this->targetAttribute)) {
            throw new InvalidConfigException('The "targetAttribute" property must be configured as a string.');
        }

        if (is_array($value) && !$this->allowArray) {
            return [$this->message, []];
        }

        $query = $this->createQuery($this->targetClass, [$this->targetAttribute => $value]);

        return $this->valueExists($this->targetClass, $query, $value) ? null : [$this->message, []];
    }

    /**
     * Check whether value exists in target table
     *
     * @param string $targetClass
     * @param QueryInterface $query
     * @param mixed $value the value want to be checked
     * @return bool
     */
    private function valueExists($targetClass, $query, $value)
    {
        $db = $targetClass::getDb();
        $exists = false;

        if ($this->forceMasterDb && method_exists($db, 'useMaster')) {
            $db->useMaster(function ($db) use ($query, $value, &$exists) {

                $exists = $this->queryValueExists($query, $value);
            });
        } else {
            $exists = $this->queryValueExists($query, $value);
        }

        return $exists;
    }


    /**
     * Run query to check if value exists
     *
     * @param QueryInterface $query
     * @param mixed $value the value to be checked
     * @return bool
     */
    private function queryValueExists($query, $value)
    {
        if (is_array($value)) {
            return $query->count("DISTINCT [[$this->targetAttribute]]") == count($value) ;
        }
        return $query->exists();
    }

    /**
     * Creates a query instance with the given condition.
     * @param string $targetClass the target AR class
     * @param mixed $condition query condition
     * @return \yii\db\ActiveQueryInterface the query instance
     */
    protected function createQuery($targetClass, $condition)
    {
        /* @var $targetClass \yii\db\ActiveRecordInterface */
        $query = $targetClass::find()->andWhere($condition);
        if ($this->filter instanceof \Closure) {
            call_user_func($this->filter, $query);
        } elseif ($this->filter !== null) {
            $query->andWhere($this->filter);
        }

        return $query;
    }

    /**
     * Returns conditions with alias.
     * @param ActiveQuery $query
     * @param array $conditions array of condition, keys to be modified
     * @param null|string $alias set empty string for no apply alias. Set null for apply primary table alias
     * @return array
     */
    private function applyTableAlias($query, $conditions, $alias = null)
    {
        if ($alias === null) {
            $alias = array_keys($query->getTablesUsedInFrom())[0];
        }
        $prefixedConditions = [];
        foreach ($conditions as $columnName => $columnValue) {
            if (strpos($columnName, '(') === false) {
                $prefixedColumn = "{$alias}.[[" . preg_replace(
                    '/^' . preg_quote($alias) . '\.(.*)$/',
                    '$1',
                    $columnName) . ']]';
            } else {
                // there is an expression, can't prefix it reliably
                $prefixedColumn = $columnName;
            }

            $prefixedConditions[$prefixedColumn] = $columnValue;
        }

        return $prefixedConditions;
    }
}


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\validators;
9
10		use Yii;
11		use yii\base\InvalidConfigException;
12		use yii\base\Model;
13		use yii\db\ActiveQuery;
14		use yii\db\ActiveRecord;
15		use yii\db\QueryInterface;
16
17		/**
18		* ExistValidator validates that the attribute value exists in a table.
19		*
20		* ExistValidator checks if the value being validated can be found in the table column specified by
21		* the ActiveRecord class [[targetClass]] and the attribute [[targetAttribute]].
22		*
23		* This validator is often used to verify that a foreign key contains a value
24		* that can be found in the foreign table.
25		*
26		* The following are examples of validation rules using this validator:
27		*
28		* ```php
29		* // a1 needs to exist
30		* ['a1', 'exist']
31		* // a1 needs to exist, but its value will use a2 to check for the existence
32		* ['a1', 'exist', 'targetAttribute' => 'a2']
33		* // a1 and a2 need to exist together, and they both will receive error message
34		* [['a1', 'a2'], 'exist', 'targetAttribute' => ['a1', 'a2']]
35		* // a1 and a2 need to exist together, only a1 will receive error message
36		* ['a1', 'exist', 'targetAttribute' => ['a1', 'a2']]
37		* // a1 needs to exist by checking the existence of both a2 and a3 (using a1 value)
38		* ['a1', 'exist', 'targetAttribute' => ['a2', 'a1' => 'a3']]
39		* ```
40		*
41		* @author Qiang Xue <[email protected]>
42		* @since 2.0
43		*/
44		class ExistValidator extends Validator
45		{
46		/**
47		* @var string the name of the ActiveRecord class that should be used to validate the existence
48		* of the current attribute value. If not set, it will use the ActiveRecord class of the attribute being validated.
49		* @see targetAttribute
50		*/
51		public $targetClass;
52		/**
53		* @var string\|array the name of the ActiveRecord attribute that should be used to
54		* validate the existence of the current attribute value. If not set, it will use the name
55		* of the attribute currently being validated. You may use an array to validate the existence
56		* of multiple columns at the same time. The array key is the name of the attribute with the value to validate,
57		* the array value is the name of the database field to search.
58		*/
59		public $targetAttribute;
60		/**
61		* @var string the name of the relation that should be used to validate the existence of the current attribute value
62		* This param overwrites $targetClass and $targetAttribute
63		* @since 2.0.14
64		*/
65		public $targetRelation;
66		/**
67		* @var string\|array\|\Closure additional filter to be applied to the DB query used to check the existence of the attribute value.
68		* This can be a string or an array representing the additional query condition (refer to [[\yii\db\Query::where()]]
69		* on the format of query condition), or an anonymous function with the signature `function ($query)`, where `$query`
70		* is the [[\yii\db\Query\|Query]] object that you can modify in the function.
71		*/
72		public $filter;
73		/**
74		* @var bool whether to allow array type attribute.
75		*/
76		public $allowArray = false;
77		/**
78		* @var string and\|or define how target attributes are related
79		* @since 2.0.11
80		*/
81		public $targetAttributeJunction = 'and';
82		/**
83		* @var bool whether this validator is forced to always use master DB
84		* @since 2.0.14
85		*/
86		public $forceMasterDb = true;
87
88
89		/**
90		* {@inheritdoc}
91		*/
92	28	public function init()
93		{
94	28	parent::init();
95	28	if ($this->message === null) {
96	28	$this->message = Yii::t('yii', '{attribute} is invalid.');
97		}
98	28	}
99
100		/**
101		* {@inheritdoc}
102		*/
103	22	public function validateAttribute($model, $attribute)
104		{
105	22	if (!empty($this->targetRelation)) {
106	9	$this->checkTargetRelationExistence($model, $attribute);
107		} else {
108	13	$this->checkTargetAttributeExistence($model, $attribute);
109		}
110	22	}
111
112		/**
113		* Validates existence of the current attribute based on relation name
114		* @param \yii\db\ActiveRecord $model the data model to be validated
115		* @param string $attribute the name of the attribute to be validated.
116		*/
117	9	private function checkTargetRelationExistence($model, $attribute)
118		{
119	9	$exists = false;
120		/** @var ActiveQuery $relationQuery */
121	9	$relationQuery = $model->{'get' . ucfirst($this->targetRelation)}();
122
123	9	if ($this->filter instanceof \Closure) {
124	3	call_user_func($this->filter, $relationQuery);
125	6	} elseif ($this->filter !== null) {
126		$relationQuery->andWhere($this->filter);
127		}
128
129	9	if ($this->forceMasterDb && method_exists($model::getDb(), 'useMaster')) {
130	9	$model::getDb()->useMaster(function() use ($relationQuery, &$exists) {
131	9	$exists = $relationQuery->exists();
132	9	});
133		} else {
134	3	$exists = $relationQuery->exists();
135		}
136
137
138	9	if (!$exists) {
139	6	$this->addError($model, $attribute, $this->message);
140		}
141	9	}
142
143		/**
144		* Validates existence of the current attribute based on targetAttribute
145		* @param \yii\base\Model $model the data model to be validated
146		* @param string $attribute the name of the attribute to be validated.
147		*/
148	13	private function checkTargetAttributeExistence($model, $attribute)
149		{
150	13	$targetAttribute = $this->targetAttribute === null ? $attribute : $this->targetAttribute;
151	13	$params = $this->prepareConditions($targetAttribute, $model, $attribute);
152	13	$conditions = [$this->targetAttributeJunction == 'or' ? 'or' : 'and'];
153
154	13	if (!$this->allowArray) {
155	13	foreach ($params as $key => $value) {
156	13	if (is_array($value)) {
157	3	$this->addError($model, $attribute, Yii::t('yii', '{attribute} is invalid.'));
158
159	3	return;
160		}
161	13	$conditions[] = [$key => $value];
162		}
163		} else {
164	3	$conditions[] = $params;
165		}
166
167	13	$targetClass = $this->targetClass === null ? get_class($model) : $this->targetClass;
168	13	$query = $this->createQuery($targetClass, $conditions);
169
170	13	if (!$this->valueExists($targetClass, $query, $model->$attribute)) {
171	6	$this->addError($model, $attribute, $this->message);
172		}
173	13	}
174
175		/**
176		* Processes attributes' relations described in $targetAttribute parameter into conditions, compatible with
177		* [[\yii\db\Query::where()\|Query::where()]] key-value format.
178		*
179		* @param $targetAttribute array\|string $attribute the name of the ActiveRecord attribute that should be used to
180		* validate the existence of the current attribute value. If not set, it will use the name
181		* of the attribute currently being validated. You may use an array to validate the existence
182		* of multiple columns at the same time. The array key is the name of the attribute with the value to validate,
183		* the array value is the name of the database field to search.
184		* If the key and the value are the same, you can just specify the value.
185		* @param \yii\base\Model $model the data model to be validated
186		* @param string $attribute the name of the attribute to be validated in the $model
187		* @return array conditions, compatible with [[\yii\db\Query::where()\|Query::where()]] key-value format.
188		* @throws InvalidConfigException
189		*/
190	13	private function prepareConditions($targetAttribute, $model, $attribute)
191		{
192	13	if (is_array($targetAttribute)) {
193	9	if ($this->allowArray) {
194		throw new InvalidConfigException('The "targetAttribute" property must be configured as a string.');
195		}
196	9	$conditions = [];
197	9	foreach ($targetAttribute as $k => $v) {
198	9	$conditions[$v] = is_int($k) ? $model->$v : $model->$k;
199		}
200		} else {
201	4	$conditions = [$targetAttribute => $model->$attribute];
202		}
203
204	13	$targetModelClass = $this->getTargetClass($model);
205	13	if (!is_subclass_of($targetModelClass, 'yii\db\ActiveRecord')) {
206		return $conditions;
207		}
208
209		/** @var ActiveRecord $targetModelClass */
210	13	return $this->applyTableAlias($targetModelClass::find(), $conditions);
211		}
212
213		/**
214		* @param Model $model the data model to be validated
215		* @return string Target class name
216		*/
217	13	private function getTargetClass($model)
218		{
219	13	return $this->targetClass === null ? get_class($model) : $this->targetClass;
220		}
221
222		/**
223		* {@inheritdoc}
224		*/
225	6	protected function validateValue($value)
226		{
227	6	if ($this->targetClass === null) {
228	3	throw new InvalidConfigException('The "targetClass" property must be set.');
229		}
230	6	if (!is_string($this->targetAttribute)) {
231	3	throw new InvalidConfigException('The "targetAttribute" property must be configured as a string.');
232		}
233
234	3	if (is_array($value) && !$this->allowArray) {
235	3	return [$this->message, []];
236		}
237
238	3	$query = $this->createQuery($this->targetClass, [$this->targetAttribute => $value]);
239
240	3	return $this->valueExists($this->targetClass, $query, $value) ? null : [$this->message, []];
241		}
242
243		/**
244		* Check whether value exists in target table
245		*
246		* @param string $targetClass
247		* @param QueryInterface $query
248		* @param mixed $value the value want to be checked
249		* @return bool
250		*/
251	16	private function valueExists($targetClass, $query, $value)
252		{
253	16	$db = $targetClass::getDb();
254	16	$exists = false;
255
256	16	if ($this->forceMasterDb && method_exists($db, 'useMaster')) {
257	16	$db->useMaster(function ($db) use ($query, $value, &$exists) {
		0 ignored issues – show Unused Code introduced 2018-02-06 03:50 UTC by Report Bug Copy Issue Report The parameter `$db` is not used and could be removed. This check looks from parameters that have been defined for a function or method, but which are not used in the method body. Loading history...
258	16	$exists = $this->queryValueExists($query, $value);
259	16	});
260		} else {
261		$exists = $this->queryValueExists($query, $value);
262		}
263
264	16	return $exists;
265		}
266
267
268		/**
269		* Run query to check if value exists
270		*
271		* @param QueryInterface $query
272		* @param mixed $value the value to be checked
273		* @return bool
274		*/
275	16	private function queryValueExists($query, $value)
276		{
277	16	if (is_array($value)) {
278	3	return $query->count("DISTINCT [[$this->targetAttribute]]") == count($value) ;
279		}
280	16	return $query->exists();
281		}
282
283		/**
284		* Creates a query instance with the given condition.
285		* @param string $targetClass the target AR class
286		* @param mixed $condition query condition
287		* @return \yii\db\ActiveQueryInterface the query instance
288		*/
289	16	protected function createQuery($targetClass, $condition)
290		{
291		/* @var $targetClass \yii\db\ActiveRecordInterface */
292	16	$query = $targetClass::find()->andWhere($condition);
293	16	if ($this->filter instanceof \Closure) {
294		call_user_func($this->filter, $query);
295	16	} elseif ($this->filter !== null) {
296		$query->andWhere($this->filter);
297		}
298
299	16	return $query;
300		}
301
302		/**
303		* Returns conditions with alias.
304		* @param ActiveQuery $query
305		* @param array $conditions array of condition, keys to be modified
306		* @param null\|string $alias set empty string for no apply alias. Set null for apply primary table alias
307		* @return array
308		*/
309	13	private function applyTableAlias($query, $conditions, $alias = null)
310		{
311	13	if ($alias === null) {
312	13	$alias = array_keys($query->getTablesUsedInFrom())[0];
313		}
314	13	$prefixedConditions = [];
315	13	foreach ($conditions as $columnName => $columnValue) {
316	13	if (strpos($columnName, '(') === false) {
317	10	$prefixedColumn = "{$alias}.[[" . preg_replace(
318	10	'/^' . preg_quote($alias) . '\.(.*)$/',
319	10	'$1',
320	10	$columnName) . ']]';
321		} else {
322		// there is an expression, can't prefix it reliably
323	3	$prefixedColumn = $columnName;
324		}
325
326	13	$prefixedConditions[$prefixedColumn] = $columnValue;
327		}
328
329	13	return $prefixedConditions;
330		}
331		}
332

yiisoft / yii2

Push — 2.1 ( 481970...56545c )

ExistValidator::applyTableAlias() B

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