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<?php namespace Felixkiss\UniqueWithValidator; |
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use Illuminate\Support\Str; |
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use Illuminate\Validation\Validator; |
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class ValidatorExtension extends Validator |
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{ |
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/** |
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* Creates a new instance of ValidatorExtension |
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*/ |
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public function __construct($translator, $data, $rules, $messages, array $customAttributes = array()) |
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{ |
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// Set custom validation error messages |
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if(!isset($messages['unique_with'])) |
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{ |
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$messages['unique_with'] = $translator->get( |
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'uniquewith-validator::validation.unique_with' |
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); |
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} |
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parent::__construct($translator, $data, $rules, $messages, $customAttributes); |
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} |
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/** |
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* Usage: unique_with: table, column1, column2, ... |
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* |
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* @param string $attribute |
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* @param mixed $value |
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* @param array $parameters |
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* @return boolean |
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*/ |
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public function validateUniqueWith($attribute, $value, $parameters) |
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{ |
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// cleaning: trim whitespace |
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$parameters = array_map('trim', $parameters); |
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// first item equals table name |
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list($connection, $table) = $this->parseTable(array_shift($parameters)); |
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// The second parameter position holds the name of the column that |
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// needs to be verified as unique. If this parameter isn't specified |
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// we will just assume that this column to be verified shares the |
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// attribute's name. |
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$column = $attribute; |
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// Create $extra array with all other columns, so getCount() will |
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// include them as where clauses as well |
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$extra = array(); |
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// Check if last parameter is an integer. If it is, then it will |
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// ignore the row with the specified id - useful when updating a row |
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list($ignore_id, $ignore_column) = $this->getIgnore($parameters); |
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// Figure out whether field_name is the same as column_name |
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// or column_name is explicitly specified. |
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// |
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// case 1: |
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// $parameter = 'last_name' |
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// => field_name = column_name = 'last_name' |
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// case 2: |
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// $parameter = 'last_name=sur_name' |
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// => field_name = 'last_name', column_name = 'sur_name' |
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foreach ($parameters as $parameter) |
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{ |
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$parameter = array_map('trim', explode('=', $parameter, 2)); |
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$field_name = $parameter[0]; |
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if (count($parameter) > 1) |
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{ |
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$column_name = $parameter[1]; |
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} |
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else |
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{ |
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$column_name = $field_name; |
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} |
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// Figure out whether main field_name has an explicitly specified |
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// column_name |
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if ($field_name == $column) |
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{ |
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$column = $column_name; |
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} |
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else |
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{ |
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$extra[$column_name] = array_get($this->data, $field_name); |
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} |
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} |
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// The presence verifier is responsible for counting rows within this |
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// store mechanism which might be a relational database or any other |
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// permanent data store like Redis, etc. We will use it to determine |
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// uniqueness. |
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$verifier = $this->getPresenceVerifier(); |
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$verifier->setConnection($connection); |
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return $verifier->getCount( |
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$table, |
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$column, |
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$value, |
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$ignore_id, |
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$ignore_column, |
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$extra |
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) == 0; |
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} |
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public function replaceUniqueWith($message, $attribute, $rule, $parameters) |
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{ |
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// remove trailing ID param if present |
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$this->getIgnore($parameters); |
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// merge primary field with conditional fields |
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$fields = array($attribute) + $parameters; |
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// get full language support due to mapping to validator getAttribute |
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// function |
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$fields = array_map(array($this, 'getAttribute'), $fields); |
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// fields to string |
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$fields = implode(', ', $fields); |
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return str_replace(':fields', $fields, $message); |
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} |
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/** |
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* Returns an array with value and column name for an optional ignore. |
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* Shaves of the ignore_id from the end of the array, if there is one. |
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* |
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* @param array $parameters |
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* @return array [$ignoreId, $ignoreColumn] |
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*/ |
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private function getIgnore(&$parameters) |
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{ |
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$lastParam = end($parameters); |
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$lastParam = array_map('trim', explode('=', $lastParam)); |
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// An ignore_id is only specified if the last param starts with a |
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// number greater than 1 (a valid id in the database) |
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if (!preg_match('/^[1-9][0-9]*$/', $lastParam[0])) |
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{ |
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return array(null, null); |
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} |
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$ignoreId = $lastParam[0]; |
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$ignoreColumn = (sizeof($lastParam) > 1) ? end($lastParam) : null; |
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// Shave of the ignore_id from the array for later processing |
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array_pop($parameters); |
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return array($ignoreId, $ignoreColumn); |
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} |
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/** |
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* Parse the connection / table for the unique / exists rules. |
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* |
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* @param string $table |
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* @return array |
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*/ |
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protected function parseTable($table) |
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{ |
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if (method_exists(get_parent_class($this), 'parseTable')) { |
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return parent::parseTable($table); |
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} |
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return Str::contains($table, '.') ? explode('.', $table, 2) : [null, $table]; |
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} |
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} |
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felixkiss /
uniquewith-validator
This check looks from parameters that have been defined for a function or method, but which are not used in the method body.