ActiveRelationTrait::populateRelation() - Code Metrics - Inspection of "Consistent behavior of `run()` method in widgets" - yiisoft/yii2 - Measure and Improve Code Quality continuously with Scrutinizer

Completed
Push — 2.1 ( c952e8...98ed49 )

by Carsten
created 2016-06-20 11:40 UTC
ActiveRelationTrait::populateRelation() F

↳ Parent: ActiveRelationTrait
Complexity

Conditions	26
Paths	373
Size

Total Lines	93
Code Lines	59
Duplication

Lines	0
Ratio	0 %
Code Coverage

Tests	53
CRAP Score	32.1714
Importance

Changes
Metric	Value
dl	0
loc	93
rs	3.5303
c	0
b	0
f	0
ccs	53
cts	67
cp	0.791
cc	26
eloc	59
nc	373
nop	2
crap	32.1714
How to fix Long Method Complexity

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

namespace yii\db;

use yii\base\InvalidConfigException;
use yii\base\InvalidParamException;

/**
 * ActiveRelationTrait implements the common methods and properties for active record relational queries.
 *
 * @author Qiang Xue <[email protected]>
 * @author Carsten Brandt <[email protected]>
 * @since 2.0
 *
 * @method ActiveRecordInterface one()
 * @method ActiveRecordInterface[] all()
 * @property ActiveRecord $modelClass
 */
trait ActiveRelationTrait
{
    /**
     * @var boolean whether this query represents a relation to more than one record.
     * This property is only used in relational context. If true, this relation will
     * populate all query results into AR instances using [[Query::all()|all()]].
     * If false, only the first row of the results will be retrieved using [[Query::one()|one()]].
     */
    public $multiple;
    /**
     * @var ActiveRecord the primary model of a relational query.
     * This is used only in lazy loading with dynamic query options.
     */
    public $primaryModel;
    /**
     * @var array the columns of the primary and foreign tables that establish a relation.
     * The array keys must be columns of the table for this relation, and the array values
     * must be the corresponding columns from the primary table.
     * Do not prefix or quote the column names as this will be done automatically by Yii.
     * This property is only used in relational context.
     */
    public $link;
    /**
     * @var array|object the query associated with the junction table. Please call [[via()]]
     * to set this property instead of directly setting it.
     * This property is only used in relational context.
     * @see via()
     */
    public $via;
    /**
     * @var string the name of the relation that is the inverse of this relation.
     * For example, an order has a customer, which means the inverse of the "customer" relation
     * is the "orders", and the inverse of the "orders" relation is the "customer".
     * If this property is set, the primary record(s) will be referenced through the specified relation.
     * For example, `$customer->orders[0]->customer` and `$customer` will be the same object,
     * and accessing the customer of an order will not trigger new DB query.
     * This property is only used in relational context.
     * @see inverseOf()
     */
    public $inverseOf;


    /**
     * Clones internal objects.
     */
    public function __clone()
    {
        parent::__clone();
        // make a clone of "via" object so that the same query object can be reused multiple times
        if (is_object($this->via)) {
            $this->via = clone $this->via;
        } elseif (is_array($this->via)) {
            $this->via = [$this->via[0], clone $this->via[1]];
        }
    }

    /**
     * Specifies the relation associated with the junction table.
     *
     * Use this method to specify a pivot record/table when declaring a relation in the [[ActiveRecord]] class:
     *
     * ```php
     * public function getOrders()
     * {
     *     return $this->hasOne(Order::class, ['id' => 'order_id']);
     * }
     *
     * public function getOrderItems()
     * {
     *     return $this->hasMany(Item::class, ['id' => 'item_id'])
     *                 ->via('orders');
     * }
     * ```
     *
     * @param string $relationName the relation name. This refers to a relation declared in [[primaryModel]].
     * @param callable $callable a PHP callback for customizing the relation associated with the junction table.
     * Its signature should be `function($query)`, where `$query` is the query to be customized.
     * @return $this the relation object itself.
     */
    public function via($relationName, callable $callable = null)
    {
        $relation = $this->primaryModel->getRelation($relationName);
        $this->via = [$relationName, $relation];
        if ($callable !== null) {
            call_user_func($callable, $relation);
        }
        return $this;
    }

    /**
     * Sets the name of the relation that is the inverse of this relation.
     * For example, an order has a customer, which means the inverse of the "customer" relation
     * is the "orders", and the inverse of the "orders" relation is the "customer".
     * If this property is set, the primary record(s) will be referenced through the specified relation.
     * For example, `$customer->orders[0]->customer` and `$customer` will be the same object,
     * and accessing the customer of an order will not trigger a new DB query.
     *
     * Use this method when declaring a relation in the [[ActiveRecord]] class:
     *
     * ```php
     * public function getOrders()
     * {
     *     return $this->hasMany(Order::class, ['customer_id' => 'id'])->inverseOf('customer');
     * }
     * ```
     *
     * @param string $relationName the name of the relation that is the inverse of this relation.
     * @return $this the relation object itself.
     */
    public function inverseOf($relationName)
    {
        $this->inverseOf = $relationName;
        return $this;
    }

    /**
     * Finds the related records for the specified primary record.
     * This method is invoked when a relation of an ActiveRecord is being accessed in a lazy fashion.
     * @param string $name the relation name
     * @param ActiveRecordInterface|BaseActiveRecord $model the primary model
     * @return mixed the related record(s)
     * @throws InvalidParamException if the relation is invalid
     */
    public function findFor($name, $model)
    {
        if (method_exists($model, 'get' . $name)) {
            $method = new \ReflectionMethod($model, 'get' . $name);
            $realName = lcfirst(substr($method->getName(), 3));

            if ($realName !== $name) {
                throw new InvalidParamException('Relation names are case sensitive. ' . get_class($model) . " has a relation named \"$realName\" instead of \"$name\".");
            }
        }

        $related = $this->multiple ? $this->all() : $this->one();

        if ($this->inverseOf === null || empty($related)) {
            return $related;
        }

        if ($this->multiple) {
            foreach ($related as $i => $relatedModel) {
$collection = json_decode($data, true);
if ( ! is_array($collection)) {
    throw new \RuntimeException('$collection must be an array.');
}

foreach ($collection as $item) { /** ... */ }
                if ($relatedModel instanceof ActiveRecordInterface) {
                    if (!isset($inverseRelation)) {
                        $inverseRelation = $relatedModel->getRelation($this->inverseOf);
                    }
                    $relatedModel->populateRelation($this->inverseOf, $inverseRelation->multiple ? [$model] : $model);
                } else {
                    if (!isset($inverseRelation)) {
                        $inverseRelation = (new $this->modelClass)->getRelation($this->inverseOf);
                    }
                    $related[$i][$this->inverseOf] = $inverseRelation->multiple ? [$model] : $model;
                }
            }
        } else {
            if ($related instanceof ActiveRecordInterface) {
                $inverseRelation = $related->getRelation($this->inverseOf);
                $related->populateRelation($this->inverseOf, $inverseRelation->multiple ? [$model] : $model);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
            } else {
                $inverseRelation = (new $this->modelClass)->getRelation($this->inverseOf);
                $related[$this->inverseOf] = $inverseRelation->multiple ? [$model] : $model;
            }
        }

        return $related;
    }

    /**
     * Finds the related records and populates them into the primary models.
     * @param string $name the relation name
     * @param array $primaryModels primary models
     * @return array the related models
     * @throws InvalidConfigException if [[link]] is invalid
     */
    public function populateRelation($name, &$primaryModels)
    {
        if (!is_array($this->link)) {
            throw new InvalidConfigException('Invalid link: it must be an array of key-value pairs.');
        }

        if ($this->via instanceof self) {
            // via junction table
            /* @var $viaQuery ActiveRelationTrait */
            $viaQuery = $this->via;
            $viaModels = $viaQuery->findJunctionRows($primaryModels);
            $this->filterByModels($viaModels);
        } elseif (is_array($this->via)) {
            // via relation
            /* @var $viaQuery ActiveRelationTrait|ActiveQueryTrait */
            list($viaName, $viaQuery) = $this->via;
            if ($viaQuery->asArray === null) {
                // inherit asArray from primary query
                $viaQuery->asArray($this->asArray);
class MyClass { }

$x = new MyClass();
$x->foo = true;
            }
            $viaQuery->primaryModel = null;
            $viaModels = $viaQuery->populateRelation($viaName, $primaryModels);
class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}
            $this->filterByModels($viaModels);
        } else {
            $this->filterByModels($primaryModels);
        }

        if (!$this->multiple && count($primaryModels) === 1) {
            $model = $this->one();
            foreach ($primaryModels as $i => $primaryModel) {
                if ($primaryModel instanceof ActiveRecordInterface) {
                    $primaryModel->populateRelation($name, $model);
                } else {
                    $primaryModels[$i][$name] = $model;
                }
                if ($this->inverseOf !== null) {
                    $this->populateInverseRelation($primaryModels, [$model], $name, $this->inverseOf);
                }
            }

            return [$model];
        } else {
            // https://github.com/yiisoft/yii2/issues/3197
            // delay indexing related models after buckets are built
            $indexBy = $this->indexBy;
class MyClass { }

$x = new MyClass();
$x->foo = true;
            $this->indexBy = null;
            $models = $this->all();

            if (isset($viaModels, $viaQuery)) {
                $buckets = $this->buildBuckets($models, $this->link, $viaModels, $viaQuery->link);
            } else {
                $buckets = $this->buildBuckets($models, $this->link);
            }

            $this->indexBy = $indexBy;
            if ($this->indexBy !== null && $this->multiple) {
                $buckets = $this->indexBuckets($buckets, $this->indexBy);
            }

            $link = array_values(isset($viaQuery) ? $viaQuery->link : $this->link);
            foreach ($primaryModels as $i => $primaryModel) {
                if ($this->multiple && count($link) === 1 && is_array($keys = $primaryModel[reset($link)])) {
                    $value = [];
                    foreach ($keys as $key) {
                        $key = $this->normalizeModelKey($key);
                        if (isset($buckets[$key])) {
                            if ($this->indexBy !== null) {
                                // if indexBy is set, array_merge will cause renumbering of numeric array
                                foreach ($buckets[$key] as $bucketKey => $bucketValue) {
                                    $value[$bucketKey] = $bucketValue;
                                }
                            } else {
                                $value = array_merge($value, $buckets[$key]);
                            }
                        }
                    }
                } else {
                    $key = $this->getModelKey($primaryModel, $link);
                    $value = isset($buckets[$key]) ? $buckets[$key] : ($this->multiple ? [] : null);
                }
                if ($primaryModel instanceof ActiveRecordInterface) {
                    $primaryModel->populateRelation($name, $value);
                } else {
                    $primaryModels[$i][$name] = $value;
                }
            }
            if ($this->inverseOf !== null) {
                $this->populateInverseRelation($primaryModels, $models, $name, $this->inverseOf);
            }

            return $models;
        }
    }

    /**
     * @param ActiveRecordInterface[] $primaryModels primary models
     * @param ActiveRecordInterface[] $models models
     * @param string $primaryName the primary relation name
     * @param string $name the relation name
     */
    private function populateInverseRelation(&$primaryModels, $models, $primaryName, $name)
    {
        if (empty($models) || empty($primaryModels)) {
            return;
        }
        $model = reset($models);
        /* @var $relation ActiveQueryInterface|ActiveQuery */
        $relation = $model instanceof ActiveRecordInterface ? $model->getRelation($name) : (new $this->modelClass)->getRelation($name);

        if ($relation->multiple) {
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
            $buckets = $this->buildBuckets($primaryModels, $relation->link, null, null, false);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
            if ($model instanceof ActiveRecordInterface) {
                foreach ($models as $model) {
                    $key = $this->getModelKey($model, $relation->link);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                    $model->populateRelation($name, isset($buckets[$key]) ? $buckets[$key] : []);
                }
            } else {
                foreach ($primaryModels as $i => $primaryModel) {
                    if ($this->multiple) {
                        foreach ($primaryModel as $j => $m) {

                            $key = $this->getModelKey($m, $relation->link);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                            $primaryModels[$i][$j][$name] = isset($buckets[$key]) ? $buckets[$key] : [];
                        }
                    } elseif (!empty($primaryModel[$primaryName])) {
                        $key = $this->getModelKey($primaryModel[$primaryName], $relation->link);
interface SomeInterface { }
class SomeClass implements SomeInterface {
    public $a;
}

function someFunction(SomeInterface $object) {
    if ($object instanceof SomeClass) {
        $a = $object->a;
    }
}
                        $primaryModels[$i][$primaryName][$name] = isset($buckets[$key]) ? $buckets[$key] : [];
                    }
                }
            }
        } else {
            if ($this->multiple) {
                foreach ($primaryModels as $i => $primaryModel) {
                    foreach ($primaryModel[$primaryName] as $j => $m) {
                        if ($m instanceof ActiveRecordInterface) {
                            $m->populateRelation($name, $primaryModel);
                        } else {
                            $primaryModels[$i][$primaryName][$j][$name] = $primaryModel;
                        }
                    }
                }
            } else {
                foreach ($primaryModels as $i => $primaryModel) {
                    if ($primaryModels[$i][$primaryName] instanceof ActiveRecordInterface) {
                        $primaryModels[$i][$primaryName]->populateRelation($name, $primaryModel);
                    } elseif (!empty($primaryModels[$i][$primaryName])) {
                        $primaryModels[$i][$primaryName][$name] = $primaryModel;
                    }
                }
            }
        }
    }

    /**
     * @param array $models
     * @param array $link
     * @param array $viaModels
     * @param array $viaLink
     * @param boolean $checkMultiple
     * @return array
     */
    private function buildBuckets($models, $link, $viaModels = null, $viaLink = null, $checkMultiple = true)
    {
        if ($viaModels !== null) {
            $map = [];
            $viaLinkKeys = array_keys($viaLink);
            $linkValues = array_values($link);
            foreach ($viaModels as $viaModel) {
                $key1 = $this->getModelKey($viaModel, $viaLinkKeys);
                $key2 = $this->getModelKey($viaModel, $linkValues);
                $map[$key2][$key1] = true;
            }
        }

        $buckets = [];
        $linkKeys = array_keys($link);

        if (isset($map)) {
            foreach ($models as $model) {
                $key = $this->getModelKey($model, $linkKeys);
                if (isset($map[$key])) {
                    foreach (array_keys($map[$key]) as $key2) {
                        $buckets[$key2][] = $model;
                    }
                }
            }
        } else {
            foreach ($models as $model) {
                $key = $this->getModelKey($model, $linkKeys);
                $buckets[$key][] = $model;
            }
        }

        if ($checkMultiple && !$this->multiple) {
            foreach ($buckets as $i => $bucket) {
                $buckets[$i] = reset($bucket);
            }
        }

        return $buckets;
    }


    /**
     * Indexes buckets by column name.
     *
     * @param array $buckets
     * @var string|callable $column the name of the column by which the query results should be indexed by.
     * This can also be a callable (e.g. anonymous function) that returns the index value based on the given row data.
     * @return array
     */
    private function indexBuckets($buckets, $indexBy)
    {
        $result = [];
        foreach ($buckets as $key => $models) {
            $result[$key] = [];
            foreach ($models as $model) {
                $index = is_string($indexBy) ? $model[$indexBy] : call_user_func($indexBy, $model);
                $result[$key][$index] = $model;
            }
        }
        return $result;
    }

    /**
     * @param array $attributes the attributes to prefix
     * @return array
     */
    private function prefixKeyColumns($attributes)
    {
        if ($this instanceof ActiveQuery && (!empty($this->join) || !empty($this->joinWith))) {
            if (empty($this->from)) {
                /* @var $modelClass ActiveRecord */
                $modelClass = $this->modelClass;
                $alias = $modelClass::tableName();
            } else {
                foreach ($this->from as $alias => $table) {
                    if (!is_string($alias)) {
                        $alias = $table;
                    }
                    break;
                }
            }
            if (isset($alias)) {
                foreach ($attributes as $i => $attribute) {
                    $attributes[$i] = "$alias.$attribute";
                }
            }
        }
        return $attributes;
    }

    /**
     * @param array $models
     */
    private function filterByModels($models)
    {
        $attributes = array_keys($this->link);

        $attributes = $this->prefixKeyColumns($attributes);

        $values = [];
        if (count($attributes) === 1) {
            // single key
            $attribute = reset($this->link);
            foreach ($models as $model) {
                if (($value = $model[$attribute]) !== null) {
                    if (is_array($value)) {
                        $values = array_merge($values, $value);
                    } else {
                        $values[] = $value;
                    }
                }
            }
        } else {
            // composite keys

            // ensure keys of $this->link are prefixed the same way as $attributes
            $prefixedLink = array_combine(
                $attributes,
                array_values($this->link)
            );
            foreach ($models as $model) {
                $v = [];
                foreach ($prefixedLink as $attribute => $link) {
                    $v[$attribute] = $model[$link];
                }
                $values[] = $v;
            }
        }
        $this->andWhere(['in', $attributes, array_unique($values, SORT_REGULAR)]);
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
    }

    /**
     * @param ActiveRecordInterface|array $model
     * @param array $attributes
     * @return string
     */
    private function getModelKey($model, $attributes)
    {
        $key = [];
        foreach ($attributes as $attribute) {
            $key[] = $this->normalizeModelKey($model[$attribute]);
        }
        if (count($key) > 1) {
            return serialize($key);
        }
        $key = reset($key);
        return is_scalar($key) ? $key : serialize($key);
    }

    /**
     * @param mixed $value raw key value.
     * @return string normalized key value.
     */
    private function normalizeModelKey($value)
    {
        if (is_object($value) && method_exists($value, '__toString')) {
            // ensure matching to special objects, which are convertable to string, for cross-DBMS relations, for example: `|MongoId`
            $value = $value->__toString();
        }
        return $value;
    }

    /**
     * @param array $primaryModels either array of AR instances or arrays
     * @return array
     */
    private function findJunctionRows($primaryModels)
    {
        if (empty($primaryModels)) {
            return [];
        }
        $this->filterByModels($primaryModels);
        /* @var $primaryModel ActiveRecord */
        $primaryModel = reset($primaryModels);
        if (!$primaryModel instanceof ActiveRecordInterface) {
            // when primaryModels are array of arrays (asArray case)
            $primaryModel = $this->modelClass;
        }

        return $this->asArray()->all($primaryModel::getDb());
trait Idable {
    public function equalIds(Idable $other) {
        return $this->getId() === $other->getId();
    }
}
    }
}

Push — 2.1 ( c952e8...98ed49 )

ActiveRelationTrait::populateRelation() F

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Long Method Complexity

Long Method

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

yiisoft / yii2

Push — 2.1 ( c952e8...98ed49 )

ActiveRelationTrait::populateRelation() F

Complexity

Size

Duplication

Code Coverage

Importance

How to fix Long Method Complexity

Long Method

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

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