limit email domain - vaidation yii - yii

Question

I have email field in signup form ,
I want to validate email domain with database e.g
Email adress is : example#work.com or etc#etc.com
Now I want validate that work.com or etc.com is listed in db or not , if not then it should not be vaidate.!
Can Anyone help me with this ?

Answer 1

Code:
public function validate($attributes = null, $clearErrors = true) {
parent::validate($attributes, $clearErrors);
if (!$this->hasErrors('email')) {
$a = explode('#', $this->email);
if (isset($a[1])) {
$record = AllowedDomains::model()->findByAttributes(array('domain'=>$a[1]));
if ($record === null) {
$this->addError('email', "This domain isn't allowed");
}
}
}
return !$this->hasErrors();
}
Notes:
put this code in the model
email - the field holding the email address
AllowedDomains - the CActiveRecord of the table that holds the allowed domains
domain - replace with the correct database field
don't forget to add the e-mail validator in the rules() function. This will filter out invalid email addresses and the above code will not run if something's wrong

Answer 2

You could accomplish this by adding a custom yii validator in the rules section of your Model. Here is some example code:
public $email; // This is the field where the email is stored
/**
* #return array validation rules for model attributes.
*/
public function rules()
{
return array(
array('email', 'checkDomain'),
);
}
Afterwards, you can add the custom validation function
public function checkDomain($attribute,$params)
{
$sEmailDomain = substr(strrchr($this->email, "#"), 1);
// Check if the domain exists
...
// If the domain exists, add the error
$this->addError('email', 'Domain already exists in the database');
}
More information can be found here: http://www.yiiframework.com/wiki/168/create-your-own-validation-rule/