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Model range validation along with yii2-field-range extension
The yii2-field-range extension enables you to easily setup ActiveField range fields with Bootstrap styling. You basically can setup two attributes joined together like a single field with combined validation error block.
Here are a few tips on configuring model validation rules for your two attributes using this extension:
Validation Scenario 1: Field 1 should not equal Field 2
Let’s consider the first example on the extension demo site. You have two attributes configured with a dropDownList named start_place and end_place. Your start_place and end_place should not be same when selected either way. In order to do this, setup the following validation rules in your model:
public function rules() return [ [ ['start_place'], 'compare', 'compareAttribute'=>'end_place', 'operator'=>'!=', 'skipOnEmpty'=>true ], [ ['end_place'], 'compare', 'compareAttribute'=>'start_place', 'operator'=>'!=' ], ];
As seen, the skipOnEmpty for start_place allows the validation to be deferred until end_place is entered.
Validation Scenario 2: Attribute 2 cannot be less than Attribute 1
Similarly, let’s look at the second example in the extension demo site. You have two attributes configured: from_amount and to_amount. For this scenario, let’s say following rules are needed:
Both amounts are required
Both amounts must be numeric/decimals.
Both amounts cannot exceed zero.
The to_amount cannot be less than from_amount.
To achieve all of the above, setup the following validation rules in your model:
public function rules() return [ [['from_amount', 'to_amount'], 'required'], [['from_amount', 'to_amount'], 'double', 'min'=>0], [ ['from_amount'], 'compare', 'compareAttribute'=>'to_amount', 'operator'=>'<=', 'skipOnEmpty'=>true ], [ ['to_amount'], 'compare', 'compareAttribute'=>'from_amount', 'operator'=>'>=' ], ];
Hope that helps. Enjoy using the extension. If you found other interesting ways of using the yii2-field-range extension OR used other validation rules, it would be nice to share your experience.