econditionalvalidator Follow @yiiframework

EConditionalValidator - Execute a rule if others have been previously passed.

Introduction ¶

I had a validation challenge long time a go. The challenge was that I had to validate an attribute only if other attributes where of certain values or fulfilled some rules. For example, in order to validate for an attribute to be an email I needed to check if a dropdown parameter was sent with value 'email'.

One solution was to use beforeValidate and setup selection statements, but I thought that would be better to have a validator that could just plug set some rules and if they are passed without errors, then the important one was executed.

I have created a GitHub repository for those willing to contribute on any of the extensions I created. Please, check the link at the bottom of this wiki.

Usage ¶

Download and extract on protected/components/validators (for the sake of the following example). For the sake of the example I am going to use one of the issues a fellow Yii'er had and requested this extension to help him out.

From its post and only the first and easiest requirement, for more advance example, please look at the post:

province is required only if country has value = 86

public function rules(){
   return array(
         array(
             'province', 'application.components.validators.EConditionalValidator',
             'conditionalRules' => array('country', 'compare', 'compareValue' => 86),
             'rule' => array('required')
         ),
   );
}

For enhancements, bug reports, etc. Please use the Forum Post

Change Log ¶

version 1.0.1 Initial public release
version 1.0.2 Fixed bug for multiple rules (thanks ToolMayNARD)

Resources ¶

web development has never been so fun
www.2amigos.us

Total 3 comments

#10279

Thearlie at 2012/10/17 06:54am

Slice instead of Splice?

Just tried out your extension and it looks like it will solve my problem quite nicely. Thanks for you efforts!

I did notice one thing when I was trying to get it going and that was pass additional parameters to the "rule". My example is

array( 'start_date_absoluteDate', 'ext.EConditionalValidator',
    'conditionalRules' => array('start_date_selected', 'compare', 'compareValue' => "absolute" ),
    'rule' => array('date', "format" => "yyyy-MM-dd" ),
),
array( 'start_date_relativeVal', 'ext.EConditionalValidator',
    'conditionalRules' => array('start_date_selected', 'compare', 'compareValue' => "relative" ),
    'rule' => array( 'numerical', "allowEmpty" => false ),
),

I noticed that the format and allowEmpty parameters weren't being passed on to the validator.

in Function validateAttribute on line 80 there is an array_splice, which I think should be an array_slice? Otherwise we are removing the additional parameters and passing the name of the validator instead?

78  return false;
79
80 $validator = CValidator::createValidator($this->rule[0], $object, $attribute, array_slice($this->rule, 1));
81 $validator->validate($object);
82 $obj = null;

It seemed to solve my problem anyway.

#9432

Wiseon3 at 2012/08/10 03:48am

Fix for manually set attributes

For the validator to read correctly all the set attributes replace line 75

$obj->setAttributes($object->getAttributes());

with

$arrAttributes = $object->getAttributes();
        foreach ($arrAttributes as $strKey => $mixVal)
            $obj->setAttribute($strKey, $mixVal);

#9410

Newb at 2012/08/09 03:35am

Things to improve

Useful extension, but it doesn't work if conditional rules are defined in the model and not in the database. Because you use getAttributes().

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