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该系统已经基于cakePHP构建,所以我想知道的是,有什么类似于isunique功能(在一个字段中是唯一的)可以直接执行此操作吗？或者我注定要自己编码？提前致谢.
编辑：建立在理查德的例子,这对我有用：
function checkUnique($data,$fields) {
if (!is_array($fields)) {
$fields = array($fields);
}
foreach($data as $key) {
$checks = $key;
}
if (empty($checks)) {
return true; //allow null
}
foreach($fields as $key) {
$tmp[$key] = $checks;
}
if (isset($this->data[$this->name][$this->PrimaryKey])) {
$tmp[$this->PRimaryKey] = "<>".$this->data[$this->name][$this->primaryKey];
}
return $this->isUnique($tmp);
}
/**
* checks is the field value is unqiue in the table
* note: we are overriding the default cakePHP isUnique test as the
original apPEars to be broken
*
* @param string $data Unused ($this->data is used instead)
* @param mnixed $fields field name (or array of field names) to
validate
* @return boolean true if combination of fields is unique
*/
function checkUnique($data,$fields) {
if (!is_array($fields)) {
$fields = array($fields);
}
foreach($fields as $key) {
$tmp[$key] = $this->data[$this->name][$key];
}
if (isset($this->data[$this->name][$this->primaryKey])) {
$tmp[$this->primaryKey] = "<>".$this->data[$this->name][$this-
>primaryKey];
}
return $this->isUnique($tmp,false);
}
}
并在您的模型验证中使用：
VAR $validate = array( "name"=>array( "unique"=>array( "rule"=>array("checkUnique",array("name","instITution_id")),"message"=>"A contact with that name already exists for that institution" ) ) );
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