Subversion-Projekte lars-tiefland.zeldi.de_alt

/*

 * Lets you say "either at least X inputs that match selector Y must be filled,

 * OR they must all be skipped (left blank)."

 *

 * The end result, is that none of these inputs:

 *

 *	<input class="productinfo" name="partnumber">

 *	<input class="productinfo" name="description">

 *	<input class="productinfo" name="color">

 *

 *	...will validate unless either at least two of them are filled,

 *	OR none of them are.

 *

 * partnumber:	{skip_or_fill_minimum: [2,".productinfo"]},

 * description: {skip_or_fill_minimum: [2,".productinfo"]},

 * color:		{skip_or_fill_minimum: [2,".productinfo"]}

 *

 * options[0]: number of fields that must be filled in the group

 * options[1]: CSS selector that defines the group of conditionally required fields

 *

 */

$.validator.addMethod( "skip_or_fill_minimum", function( value, element, options ) {

	var $fields = $( options[ 1 ], element.form ),

		$fieldsFirst = $fields.eq( 0 ),

		validator = $fieldsFirst.data( "valid_skip" ) ? $fieldsFirst.data( "valid_skip" ) : $.extend( {}, this ),

		numberFilled = $fields.filter( function() {

			return validator.elementValue( this );

		} ).length,

		isValid = numberFilled === 0 || numberFilled >= options[ 0 ];

	// Store the cloned validator for future validation

	$fieldsFirst.data( "valid_skip", validator );

	// If element isn't being validated, run each skip_or_fill_minimum field's validation rules

	if ( !$( element ).data( "being_validated" ) ) {

		$fields.data( "being_validated", true );

		$fields.each( function() {

			validator.element( this );

		} );

		$fields.data( "being_validated", false );

	}

	return isValid;

}, $.validator.format( "Please either skip these fields or fill at least {0} of them." ) );