Subversion-Projekte lars-tiefland.webanos.zeldi.de

/*
 * 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." ) );