Hi,

in germany it is usual to enter the comma as decimal separator.
When using db fields as type 'Float', the "NumericField" is used by scaffolded forms.
Here you get a validation error when typing "9,99" because "9.99" is expected.

I built a custom numeric field as 'AWNumericField':

class AWNumericField extends TextField{
	
	function Field() {
		$html = parent::Field();
		//Requirements::javascript(SAPPHIRE_DIR . 'javascript/NumericField.js');		
		return $html;
	}

	
	/** PHP Validation **/
	function validate($validator){
                $this->value = str_replace(',', '.', $this->value);
		if($this->value && !is_numeric(trim($this->value))){
 			$validator->validationError(
 				$this->name,
				sprintf(
					_t('AWNumericField.VALIDATION', "'%s' is not a number, only numbers can be accepted for this field"),
					$this->value
				),
				"validation"
			);
			return false;
		} else{
			return true;
		}
	}
	
       
        function Value() {
            return number_format($this->value, 2, ',', '.');
        }
        
}

And it works when i build forms using this field.
But i want sapphire to take this field by default (by scaffolding)

I thougt that

Object::useCustomClass('NumericField', 'AWNumericField');
//or
Object::useCustomClass('NumericField', 'AWNumericField', true);

Now i tried to build an extension an override some methods:

class NumericFieldExtension extends Extension {
	function Field() {
		$html = parent::Field();
		//Requirements::javascript(SAPPHIRE_DIR . 'javascript/NumericField.js');		
		return $html;
	}
        
        function jsValidation() {
            return;
        }

	
	/** PHP Validation **/
	function validate($validator){
                $this->value = str_replace(',', '.', $this->value);
		if($this->value && !is_numeric(trim($this->value))){
 			$validator->validationError(
 				$this->name,
				sprintf(
					_t('AWNumericField.VALIDATION', "'%s' is not a number, only numbers can be accepted for this field"),
					$this->value
				),
				"validation"
			);
			return false;
		} else{
			return true;
		}
	}
	
       
        function Value() {
            return number_format($this->value, 2, ',', '.');
        }    
}

and in _config.php

Object::add_extension('NumericField', 'NumericFieldExtension');

Still doesn't work .....

Any ideas or suggestions ?
Rob

I don't think in an extension or decorator overriding existing owner functions is possible, you can extend owner functions that have an extension hook defined, or create new funtionality...