DatabasePresenceVerifier.php
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<?php
namespace Illuminate\Validation;
use Closure;
use Illuminate\Support\Str;
use Illuminate\Database\ConnectionResolverInterface;
class DatabasePresenceVerifier implements PresenceVerifierInterface
{
/**
* The database connection instance.
*
* @var \Illuminate\Database\ConnectionResolverInterface
*/
protected $db;
/**
* The database connection to use.
*
* @var string
*/
protected $connection;
/**
* Create a new database presence verifier.
*
* @param \Illuminate\Database\ConnectionResolverInterface $db
* @return void
*/
public function __construct(ConnectionResolverInterface $db)
{
$this->db = $db;
}
/**
* Count the number of objects in a collection having the given value.
*
* @param string $collection
* @param string $column
* @param string $value
* @param int|null $excludeId
* @param string|null $idColumn
* @param array $extra
* @return int
*/
public function getCount($collection, $column, $value, $excludeId = null, $idColumn = null, array $extra = [])
{
$query = $this->table($collection)->where($column, '=', $value);
if (! is_null($excludeId) && $excludeId !== 'NULL') {
$query->where($idColumn ?: 'id', '<>', $excludeId);
}
return $this->addConditions($query, $extra)->count();
}
/**
* Count the number of objects in a collection with the given values.
*
* @param string $collection
* @param string $column
* @param array $values
* @param array $extra
* @return int
*/
public function getMultiCount($collection, $column, array $values, array $extra = [])
{
$query = $this->table($collection)->whereIn($column, $values);
return $this->addConditions($query, $extra)->distinct()->count($column);
}
/**
* Add the given conditions to the query.
*
* @param \Illuminate\Database\Query\Builder $query
* @param array $conditions
* @return \Illuminate\Database\Query\Builder
*/
protected function addConditions($query, $conditions)
{
foreach ($conditions as $key => $value) {
if ($value instanceof Closure) {
$query->where(function ($query) use ($value) {
$value($query);
});
} else {
$this->addWhere($query, $key, $value);
}
}
return $query;
}
/**
* Add a "where" clause to the given query.
*
* @param \Illuminate\Database\Query\Builder $query
* @param string $key
* @param string $extraValue
* @return void
*/
protected function addWhere($query, $key, $extraValue)
{
if ($extraValue === 'NULL') {
$query->whereNull($key);
} elseif ($extraValue === 'NOT_NULL') {
$query->whereNotNull($key);
} elseif (Str::startsWith($extraValue, '!')) {
$query->where($key, '!=', mb_substr($extraValue, 1));
} else {
$query->where($key, $extraValue);
}
}
/**
* Get a query builder for the given table.
*
* @param string $table
* @return \Illuminate\Database\Query\Builder
*/
public function table($table)
{
return $this->db->connection($this->connection)->table($table)->useWritePdo();
}
/**
* Set the connection to be used.
*
* @param string $connection
* @return void
*/
public function setConnection($connection)
{
$this->connection = $connection;
}
}