UniqueValidator Class Reference

Uniqueness Validator. More...

Inheritance diagram for UniqueValidator:

Collaboration diagram for UniqueValidator:

Public Member Functions
	UniqueValidator ($field, $title, $item, $message, $extraConstraint="")
	writeClient ()
	validate ()
Public Member Functions inherited from AbstractValidator
	AbstractValidator ($field, $title)

Public Attributes
	$item
	$message
Public Attributes inherited from AbstractValidator
	$field
	$title

Detailed Description

Uniqueness Validator.

Tests to ensure that the database does not contain a record which matches the supplied value for the given field (useful for usernames, etc.) Obviously, this validator has no client-side component.

Definition at line 741 of file validation.inc.

Member Function Documentation

UniqueValidator()

UniqueValidator::UniqueValidator	(		$field,
			$title,
			$item,
			$message,
			$extraConstraint = ""
	)

Definition at line 746 of file validation.inc.

     {
          $this->class = $item->table;
          
          if(!$message)
          {
               $className = $item->prettifyClassName();
               $message = (preg_match("/^[aeiou]/i", $className)) ? "An " : "A ";
               $fieldName = strtolower($title);
               $message .= "{$className} already exists with that {$fieldName}. Please choose a different {$fieldName}.";
          }
          $this->message = $message;
          $this->item =& $item;
          $this->extraConstraint = $extraConstraint;
               
          $this->AbstractValidator($field, $title);
     }

validate()

UniqueValidator::validate

(

)

Reimplemented from AbstractValidator.

Definition at line 771 of file validation.inc.

     {
          global $_POST;
          
          $value = $_POST[$this->field];
          
          $result = "";
          
          if ($value)
          {              
               trace("UniqueValidator::validate: ".get_class($this->item), 3);
               
               $value = ConnectionManager::quote($value);
               
               $pk = $this->item->primary_key;
               
               $constraint = "WHERE {$this->field}=$value";
               
               if ($this->extraConstraint) $constraint .= " AND {$this->extraConstraint}";
               
               if ($this->item->$pk)
               {
                    $constraint .= " AND {$pk}!='{$this->item->$pk}'";
               }
               
               $matches = $this->item->queryValue("COUNT(1)", $constraint);
               trace("***************count matches ". count($matches), 3);
               if ($matches > 0)
               {
                    trace("UniqueValidator::validate - found $matches match(es), raising error", 3);
                    
                    $result = $this->message;
               }
          }
          
          return $result;
     }

writeClient()

UniqueValidator::writeClient

(

)

Reimplemented from AbstractValidator.

Definition at line 764 of file validation.inc.

     {
          // No client-side component
          
          return "";
     }

Member Data Documentation

$item

UniqueValidator::$item

Definition at line 743 of file validation.inc.

$message

UniqueValidator::$message

Definition at line 744 of file validation.inc.

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The documentation for this class was generated from the following file:

• C:/code/cms.sonjara.com/framework/validation.inc