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<?php |
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namespace Blasttech\EloquentRelatedPlus; |
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use Illuminate\Database\Eloquent\Builder; |
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use Illuminate\Database\Eloquent\Model; |
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use Illuminate\Database\Eloquent\Relations\BelongsTo; |
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use Illuminate\Database\Eloquent\Relations\HasOneOrMany; |
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use Illuminate\Database\Eloquent\Relations\Relation; |
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trait HelperMethodTrait |
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{ |
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/** |
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* Get relation table name and alias |
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* |
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* @param Relation $relation |
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* @return \stdClass |
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*/ |
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public function getRelationTables($relation) |
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{ |
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$table = new \stdClass(); |
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$table->name = $relation->getRelated()->getTable(); |
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// if using a 'table' AS 'tableAlias' in a from statement, otherwise alias will be the table name |
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$from = explode(' ', $relation->getQuery()->getQuery()->from); |
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$table->alias = array_pop($from); |
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return $table; |
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} |
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/** |
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* Get the join columns for a relation |
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* |
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* @param Relation|BelongsTo|HasOneOrMany $relation |
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* @return \stdClass |
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*/ |
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private function getJoinColumns($relation) |
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{ |
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// Get keys with table names |
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if ($relation instanceof BelongsTo) { |
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$first = $relation->getOwnerKey(); |
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$second = $relation->getForeignKey(); |
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} else { |
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$first = $relation->getQualifiedParentKeyName(); |
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$second = $relation->getQualifiedForeignKeyName(); |
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} |
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return (object)['first' => $first, 'second' => $second]; |
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} |
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/** |
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* Get the relations from a relation name |
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* $relationName can be a single relation |
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* Usage for User model: |
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* parseRelationNames('customer') returns [$user->customer()] |
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* parseRelationNames('customer.contact') returns [$user->customer(), $user->customer->contact()] |
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* |
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* @param string $relationName |
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* @return Relation[] |
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*/ |
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private function parseRelationNames($relationName) |
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{ |
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$relationNames = explode('.', $relationName); |
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$parentRelationName = null; |
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$relations = []; |
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foreach ($relationNames as $relationName) { |
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if (is_null($parentRelationName)) { |
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$relations[] = $this->$relationName(); |
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$parentRelationName = $this->$relationName()->getRelated(); |
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} else { |
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$relations[] = $parentRelationName->$relationName(); |
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} |
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} |
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return $relations; |
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} |
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/** |
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* Add backticks to a table/column |
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* |
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* @param string $column |
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* @return string |
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*/ |
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private function addBackticks($column) |
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{ |
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return preg_match('/^[0-9a-zA-Z\.]*$/', $column) ? |
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'`' . str_replace(['`', '.'], ['', '`.`'], $column) . '`' : $column; |
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} |
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/** |
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* Return the sql for a query with the bindings replaced with the binding values |
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* |
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* @param Builder $builder |
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* @return string |
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*/ |
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private function toSqlWithBindings(Builder $builder) |
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{ |
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$replacements = array_map('addslashes', $builder->getBindings()); |
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$sql = $builder->toSql(); |
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return preg_replace_callback( |
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'/(\?)(?=(?:[^\'"]|["\'][^\'"]*["\'])*$)/', |
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function () use (&$replacements) { |
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return array_shift($replacements); |
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}, |
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$sql |
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); |
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} |
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/** |
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* Add table name to column name if table name not already included in column name |
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* |
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* @param string $table |
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* @param string $column |
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* @return string |
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*/ |
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private function columnWithTableName($table, $column) |
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{ |
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return (preg_match('/(' . $table . '\.|`' . $table . '`)/i', $column) > 0 ? '' : $table . '.') . $column; |
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} |
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/** |
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* Remove a global scope if it exists |
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* |
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* @param Builder $query |
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* @param string $scopeName |
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* @return Builder |
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*/ |
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private function removeGlobalScope($query, $scopeName) |
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{ |
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/** @var Model $this */ |
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$globalScopes = $this->getGlobalScopes(); |
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if (isset($globalScopes[$scopeName])) { |
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$query->withoutGlobalScope($scopeName); |
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} |
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return $query; |
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} |
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/** |
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* Check if this model has already been joined to a table or relation |
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* |
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* @param Builder $builder |
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* @param string $table |
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* @param \Illuminate\Database\Eloquent\Relations\Relation $relation |
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* @return bool |
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*/ |
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private function hasJoin(Builder $builder, $table, $relation) |
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{ |
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if (!$this->isJoined($builder, $table)) { |
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return $this->isEagerLoaded($builder, $relation); |
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} else { |
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return true; |
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} |
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} |
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/** |
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* Check if model is currently joined to $table |
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* |
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* @param Builder $builder |
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* @param string $table |
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* @return bool |
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*/ |
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private function isJoined(Builder $builder, $table) |
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{ |
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$joins = $builder->getQuery()->joins; |
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if (!is_null($joins)) { |
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foreach ($joins as $joinClause) { |
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if ($joinClause->table == $table) { |
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return true; |
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} |
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} |
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} |
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return false; |
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} |
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/** |
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* Check if relation exists in eager loads |
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* |
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* @param Builder $builder |
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* @param \Illuminate\Database\Eloquent\Relations\Relation $relation |
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* @return bool |
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*/ |
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private function isEagerLoaded(Builder $builder, $relation) |
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{ |
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$eagerLoads = $builder->getEagerLoads(); |
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return !is_null($eagerLoads) && in_array($relation, $eagerLoads); |
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} |
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} |
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blasttech /
eloquent-related-plus
