ExistValidator::applyTableAlias() - Code Metrics - Inspection of "Simplified API of `Formatter::asWeight()` and `For..." - rob006/yii2-dev - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 1501c6...0e2b6c )

by Robert

created 2017-08-21 11:07 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;

/**
 * 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 $targetAttribute;
    /**
     * @var string|array|\Closure additional filter to be applied to the DB query used to check the existence of the attribute value.
     * This can be a string or an array representing the additional query condition (refer to [[\yii\db\Query::where()]]
     * on the format of query condition), or an anonymous function with the signature `function ($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';


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

    /**
     * @inheritdoc
     */
    public function validateAttribute($model, $attribute)
    {
        $targetAttribute = $this->targetAttribute === null ? $attribute : $this->targetAttribute;
        $params = $this->prepareConditions($targetAttribute, $model, $attribute);
        $conditions[] = $this->targetAttributeJunction == 'or' ? 'or' : 'and';
foreach ($collection as $item) {
    $myArray['foo'] = $item->getFoo();

    if ($item->hasBar()) {
        $myArray['bar'] = $item->getBar();
    }

    // do something with $myArray
}

        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 (is_array($model->$attribute)) {
            if ($query->count("DISTINCT [[$targetAttribute]]") != count($model->$attribute)) {
                $this->addError($model, $attribute, $this->message);
            }
        } elseif (!$query->exists()) {
            $this->addError($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.');
        }

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

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

            return $query->count("DISTINCT [[$this->targetAttribute]]") == count($value) ? null : [$this->message, []];
        }

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

    /**
     * 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
16		/**
17		* ExistValidator validates that the attribute value exists in a table.
18		*
19		* ExistValidator checks if the value being validated can be found in the table column specified by
20		* the ActiveRecord class [[targetClass]] and the attribute [[targetAttribute]].
21		*
22		* This validator is often used to verify that a foreign key contains a value
23		* that can be found in the foreign table.
24		*
25		* The following are examples of validation rules using this validator:
26		*
27		* ```php
28		* // a1 needs to exist
29		* ['a1', 'exist']
30		* // a1 needs to exist, but its value will use a2 to check for the existence
31		* ['a1', 'exist', 'targetAttribute' => 'a2']
32		* // a1 and a2 need to exist together, and they both will receive error message
33		* [['a1', 'a2'], 'exist', 'targetAttribute' => ['a1', 'a2']]
34		* // a1 and a2 need to exist together, only a1 will receive error message
35		* ['a1', 'exist', 'targetAttribute' => ['a1', 'a2']]
36		* // a1 needs to exist by checking the existence of both a2 and a3 (using a1 value)
37		* ['a1', 'exist', 'targetAttribute' => ['a2', 'a1' => 'a3']]
38		* ```
39		*
40		* @author Qiang Xue <[email protected]>
41		* @since 2.0
42		*/
43		class ExistValidator extends Validator
44		{
45		/**
46		* @var string the name of the ActiveRecord class that should be used to validate the existence
47		* of the current attribute value. If not set, it will use the ActiveRecord class of the attribute being validated.
48		* @see targetAttribute
49		*/
50		public $targetClass;
51		/**
52		* @var string\|array the name of the ActiveRecord attribute that should be used to
53		* validate the existence of the current attribute value. If not set, it will use the name
54		* of the attribute currently being validated. You may use an array to validate the existence
55		* of multiple columns at the same time. The array key is the name of the attribute with the value to validate,
56		* the array value is the name of the database field to search.
57		*/
58		public $targetAttribute;
59		/**
60		* @var string\|array\|\Closure additional filter to be applied to the DB query used to check the existence of the attribute value.
61		* This can be a string or an array representing the additional query condition (refer to [[\yii\db\Query::where()]]
62		* on the format of query condition), or an anonymous function with the signature `function ($query)`, where `$query`
63		* is the [[\yii\db\Query\|Query]] object that you can modify in the function.
64		*/
65		public $filter;
66		/**
67		* @var bool whether to allow array type attribute.
68		*/
69		public $allowArray = false;
70		/**
71		* @var string and\|or define how target attributes are related
72		* @since 2.0.11
73		*/
74		public $targetAttributeJunction = 'and';
75
76
77		/**
78		* @inheritdoc
79		*/
80	18	public function init()
81		{
82	18	parent::init();
83	18	if ($this->message === null) {
84	18	$this->message = Yii::t('yii', '{attribute} is invalid.');
85		}
86	18	}
87
88		/**
89		* @inheritdoc
90		*/
91	12	public function validateAttribute($model, $attribute)
92		{
93	12	$targetAttribute = $this->targetAttribute === null ? $attribute : $this->targetAttribute;
94	12	$params = $this->prepareConditions($targetAttribute, $model, $attribute);
95	12	$conditions[] = $this->targetAttributeJunction == 'or' ? 'or' : 'and';
		0 ignored issues – show Coding Style Comprehensibility introduced 2017-01-23 16:33 UTC by Report Bug Copy Issue Report `$conditions` was never initialized. Although not strictly required by PHP, it is generally a good practice to add `$conditions = array();` before regardless. Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code. Let’s take a look at an example: foreach ($collection as $item) { $myArray['foo'] = $item->getFoo(); if ($item->hasBar()) { $myArray['bar'] = $item->getBar(); } // do something with $myArray } As you can see in this example, the array `$myArray` is initialized the first time when the foreach loop is entered. You can also see that the value of the `bar` key is only written conditionally; thus, its value might result from a previous iteration. This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization `$myArray = array()` either outside or inside the foreach loop. Loading history...
96
97	12	if (!$this->allowArray) {
98	12	foreach ($params as $key => $value) {
99	12	if (is_array($value)) {
100	3	$this->addError($model, $attribute, Yii::t('yii', '{attribute} is invalid.'));
101
102	3	return;
103		}
104	12	$conditions[] = [$key => $value];
105		}
106		} else {
107	3	$conditions[] = $params;
108		}
109
110	12	$targetClass = $this->targetClass === null ? get_class($model) : $this->targetClass;
111	12	$query = $this->createQuery($targetClass, $conditions);
112
113	12	if (is_array($model->$attribute)) {
114	3	if ($query->count("DISTINCT [[$targetAttribute]]") != count($model->$attribute)) {
115	3	$this->addError($model, $attribute, $this->message);
116		}
117	12	} elseif (!$query->exists()) {
118	6	$this->addError($model, $attribute, $this->message);
119		}
120	12	}
121
122		/**
123		* Processes attributes' relations described in $targetAttribute parameter into conditions, compatible with
124		* [[\yii\db\Query::where()\|Query::where()]] key-value format.
125		*
126		* @param $targetAttribute array\|string $attribute the name of the ActiveRecord attribute that should be used to
127		* validate the existence of the current attribute value. If not set, it will use the name
128		* of the attribute currently being validated. You may use an array to validate the existence
129		* of multiple columns at the same time. The array key is the name of the attribute with the value to validate,
130		* the array value is the name of the database field to search.
131		* If the key and the value are the same, you can just specify the value.
132		* @param \yii\base\Model $model the data model to be validated
133		* @param string $attribute the name of the attribute to be validated in the $model
134		* @return array conditions, compatible with [[\yii\db\Query::where()\|Query::where()]] key-value format.
135		* @throws InvalidConfigException
136		*/
137	12	private function prepareConditions($targetAttribute, $model, $attribute)
138		{
139	12	if (is_array($targetAttribute)) {
140	9	if ($this->allowArray) {
141		throw new InvalidConfigException('The "targetAttribute" property must be configured as a string.');
142		}
143	9	$conditions = [];
144	9	foreach ($targetAttribute as $k => $v) {
145	9	$conditions[$v] = is_int($k) ? $model->$v : $model->$k;
146		}
147		} else {
148	3	$conditions = [$targetAttribute => $model->$attribute];
149		}
150
151	12	$targetModelClass = $this->getTargetClass($model);
152	12	if (!is_subclass_of($targetModelClass, 'yii\db\ActiveRecord')) {
153		return $conditions;
154		}
155
156		/** @var ActiveRecord $targetModelClass */
157	12	return $this->applyTableAlias($targetModelClass::find(), $conditions);
158		}
159
160		/**
161		* @param Model $model the data model to be validated
162		* @return string Target class name
163		*/
164	12	private function getTargetClass($model)
165		{
166	12	return $this->targetClass === null ? get_class($model) : $this->targetClass;
167		}
168
169		/**
170		* @inheritdoc
171		*/
172	6	protected function validateValue($value)
173		{
174	6	if ($this->targetClass === null) {
175	3	throw new InvalidConfigException('The "targetClass" property must be set.');
176		}
177	6	if (!is_string($this->targetAttribute)) {
178	3	throw new InvalidConfigException('The "targetAttribute" property must be configured as a string.');
179		}
180
181	3	$query = $this->createQuery($this->targetClass, [$this->targetAttribute => $value]);
182
183	3	if (is_array($value)) {
184	3	if (!$this->allowArray) {
185	3	return [$this->message, []];
186		}
187
188		return $query->count("DISTINCT [[$this->targetAttribute]]") == count($value) ? null : [$this->message, []];
189		}
190
191	3	return $query->exists() ? null : [$this->message, []];
192		}
193
194		/**
195		* Creates a query instance with the given condition.
196		* @param string $targetClass the target AR class
197		* @param mixed $condition query condition
198		* @return \yii\db\ActiveQueryInterface the query instance
199		*/
200	15	protected function createQuery($targetClass, $condition)
201		{
202		/* @var $targetClass \yii\db\ActiveRecordInterface */
203	15	$query = $targetClass::find()->andWhere($condition);
204	15	if ($this->filter instanceof \Closure) {
205		call_user_func($this->filter, $query);
206	15	} elseif ($this->filter !== null) {
207		$query->andWhere($this->filter);
208		}
209
210	15	return $query;
211		}
212
213		/**
214		* Returns conditions with alias.
215		* @param ActiveQuery $query
216		* @param array $conditions array of condition, keys to be modified
217		* @param null\|string $alias set empty string for no apply alias. Set null for apply primary table alias
218		* @return array
219		*/
220	12	private function applyTableAlias($query, $conditions, $alias = null)
221		{
222	12	if ($alias === null) {
223	12	$alias = array_keys($query->getTablesUsedInFrom())[0];
224		}
225	12	$prefixedConditions = [];
226	12	foreach ($conditions as $columnName => $columnValue) {
227	12	if (strpos($columnName, '(') === false) {
228	9	$prefixedColumn = "{$alias}.[[" . preg_replace(
229	9	'/^' . preg_quote($alias) . '\.(.*)$/',
230	9	'$1',
231	9	$columnName) . ']]';
232		} else {
233		// there is an expression, can't prefix it reliably
234	3	$prefixedColumn = $columnName;
235		}
236
237	12	$prefixedConditions[$prefixedColumn] = $columnValue;
238		}
239
240	12	return $prefixedConditions;
241		}
242		}
243

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ExistValidator::applyTableAlias() B

Complexity

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