62 lines
1.1 KiB
PHP
62 lines
1.1 KiB
PHP
<?php namespace System\Validation\Rules;
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use System\DB;
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use System\Validation\Nullable_Rule;
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class Uniqueness_Of extends Nullable_Rule {
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/**
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* The database table that should be checked.
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*
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* @var string
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*/
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public $table;
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/**
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* The database column that should be checked.
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*
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* @var string
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*/
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public $column;
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/**
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* Evaluate the validity of an attribute.
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*
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* @param string $attribute
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* @param array $attributes
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* @return bool
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*/
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public function check($attribute, $attributes)
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{
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if ( ! is_null($nullable = parent::check($attribute, $attributes)))
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{
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return $nullable;
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}
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if (is_null($this->column))
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{
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$this->column = $attribute;
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}
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return DB::table($this->table)->where($this->column, '=', $attributes[$attribute])->count() == 0;
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}
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/**
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* Set the database table and column.
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*
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* The attribute name will be used as the column name if no other
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* column name is specified.
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*
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* @param string $table
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* @param string $column
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* @return Uniqueness_Of
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*/
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public function on($table, $column = null)
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{
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$this->table = $table;
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$this->column = $column;
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return $this;
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}
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} |